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ImageVideoBanner
Commit aecd4fe7 authored by gaodapeng's avatar gaodapeng
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修改以适配androidx版本

parent cf29174d
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Showing with 262 additions and 2252 deletions
banner/.gitignore 0 → 100644
View file @ aecd4fe7
/build
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banner/build.gradle 0 → 100644
View file @ aecd4fe7
apply plugin: 'com.android.library'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
minSdkVersion 19
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
consumerProguardFiles "consumer-rules.pro"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
implementation 'com.github.bumptech.glide:glide:4.9.0'
//当需要FFmpegMediaMetadataRetriever时必选
implementation 'com.github.wseemann:FFmpegMediaMetadataRetriever-armeabi-v7a:1.0.14'
implementation 'com.wang.avi:library:2.1.3'
implementation "androidx.viewpager2:viewpager2:1.0.0"
}
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banner/proguard-rules.pro 0 → 100644
View file @ aecd4fe7
# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
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banner/src/androidTest/java/com/widget/imagebanner/ExampleInstrumentedTest.java 0 → 100644
View file @ aecd4fe7
package com.widget.imagebanner;
import android.content.Context;
import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;
/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
assertEquals("com.widget.imagebanner.test", appContext.getPackageName());
}
}
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banner/src/main/AndroidManifest.xml 0 → 100644
View file @ aecd4fe7
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.widget.imagebanner">
/
</manifest>
\ No newline at end of file
imageVideoBanner/src/main/java/com/widget/imagevideobanner/banner/ImageVideoBanner.java → banner/src/main/java/com/widget/imagebanner/ImageVideoBanner.java
View file @ aecd4fe7
package com.widget.imagevideobanner.banner; package com.widget.imagebanner;
import android.content.Context; import android.content.Context;
import android.content.res.TypedArray; import android.content.res.TypedArray;
...@@ -7,21 +7,26 @@ import android.media.MediaPlayer; ...@@ -7,21 +7,26 @@ import android.media.MediaPlayer;
import android.os.Bundle; import android.os.Bundle;
import android.os.Handler; import android.os.Handler;
import android.os.Message; import android.os.Message;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable; import androidx.annotation.NonNull;
import android.support.v4.app.Fragment; import androidx.annotation.Nullable;
import android.support.v4.app.FragmentActivity; import androidx.fragment.app.Fragment;
import android.support.v4.app.FragmentManager; import androidx.fragment.app.FragmentActivity;
import android.support.v4.app.FragmentStatePagerAdapter; import androidx.fragment.app.FragmentManager;
import androidx.lifecycle.Lifecycle;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import androidx.viewpager2.widget.ViewPager2;
import android.util.AttributeSet; import android.util.AttributeSet;
import android.util.LayoutDirection;
import android.view.LayoutInflater; import android.view.LayoutInflater;
import android.view.MotionEvent; import android.view.MotionEvent;
import android.view.View; import android.view.View;
import android.widget.FrameLayout; import android.widget.FrameLayout;
import com.widget.imagevideobanner.R; import com.widget.imagebanner.view.ImageVideoFragment;
import com.widget.imagevideobanner.bean.BannerBean; import com.widget.imagebanner.bean.BannerBean;
import com.widget.imagevideobanner.utils.BitmapUtils; import com.widget.imagebanner.utils.BitmapUtils;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
...@@ -36,9 +41,9 @@ import java.util.concurrent.ScheduledExecutorService; ...@@ -36,9 +41,9 @@ import java.util.concurrent.ScheduledExecutorService;
import wseemann.media.FFmpegMediaMetadataRetriever; import wseemann.media.FFmpegMediaMetadataRetriever;
public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageChangeListener, com.widget.imagevideobanner.banner.ImageVideoFragment.OnVideoCompletionListener { public class ImageVideoBanner extends FrameLayout implements ImageVideoFragment.OnVideoCompletionListener {
private static final int UPTATE_VIEWPAGER = 0; private static final int UPTATE_VIEWPAGER = 0;
private ViewPager mViewPager; private ViewPager2 mViewPager;
private List<BannerBean> mList = new ArrayList<>(); private List<BannerBean> mList = new ArrayList<>();
private ViewsPagerAdapter mAdapter; private ViewsPagerAdapter mAdapter;
private int autoCurrIndex = 0;//设置当前 第几个图片 被选中 private int autoCurrIndex = 0;//设置当前 第几个图片 被选中
...@@ -58,7 +63,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -58,7 +63,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
super(context, attrs); super(context, attrs);
mContext = context; mContext = context;
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.banner); TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.banner);
period = typedArray.getInt(R.styleable.banner_period,5000); period = typedArray.getInt(R.styleable.banner_period, 5000);
typedArray.recycle(); typedArray.recycle();
initView(context); initView(context);
...@@ -67,9 +72,9 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -67,9 +72,9 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
private void initView(Context context) { private void initView(Context context) {
View view = LayoutInflater.from(context).inflate(R.layout.banner_imge_video, this, true); View view = LayoutInflater.from(context).inflate(R.layout.banner_imge_video, this, true);
mViewPager = view.findViewById(R.id.view_pager); mViewPager = view.findViewById(R.id.view_pager);
mAdapter = new ViewsPagerAdapter(((FragmentActivity)context).getSupportFragmentManager()); mViewPager.setLayoutDirection(LAYOUT_DIRECTION_LOCALE);
mAdapter = new ViewsPagerAdapter(((FragmentActivity) context).getSupportFragmentManager(), ((FragmentActivity) context).getLifecycle());
mViewPager.setAdapter(mAdapter); mViewPager.setAdapter(mAdapter);
mViewPager.setOnPageChangeListener(this);
//ViewPager手势滑动禁用 //ViewPager手势滑动禁用
mViewPager.setOnTouchListener(new OnTouchListener() { mViewPager.setOnTouchListener(new OnTouchListener() {
@Override @Override
...@@ -77,16 +82,16 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -77,16 +82,16 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
return true; return true;
} }
}); });
mViewPager.registerOnPageChangeCallback(callback);
} }
public void replaceData(List<com.widget.imagevideobanner.bean.BannerBean> listBean){ public void replaceData(List<com.widget.imagebanner.bean.BannerBean> listBean) {
mAdapter.replaceData(listBean); mAdapter.replaceData(listBean);
} }
public void addData(List<com.widget.imagevideobanner.bean.BannerBean> listBean){ public void addData(List<com.widget.imagebanner.bean.BannerBean> listBean) {
mAdapter.addData(listBean); mAdapter.addData(listBean);
} }
...@@ -94,11 +99,11 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -94,11 +99,11 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
* 初始化视频的Bitmap * 初始化视频的Bitmap
*/ */
private void initBannerBitmap() { private void initBannerBitmap() {
if(mList.size() == 0){ if (mList.size() == 0) {
return; return;
} }
for(BannerBean bannerBean : mList){ for (BannerBean bannerBean : mList) {
if(bannerBean.getType() == 1 && null == bannerBean.getLoadingImage()){ if (bannerBean.getType() == 1 && null == bannerBean.getLoadingImage()) {
setLoadingImages(bannerBean); setLoadingImages(bannerBean);
} }
} }
...@@ -107,9 +112,10 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -107,9 +112,10 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
/** /**
* 获取视频的第一帧作为截图 * 获取视频的第一帧作为截图
*
* @param bannerBean * @param bannerBean
*/ */
private void setLoadingImages(final BannerBean bannerBean){ private void setLoadingImages(final BannerBean bannerBean) {
if (sExecutor == null) { if (sExecutor == null) {
sExecutor = Executors.newScheduledThreadPool(5); sExecutor = Executors.newScheduledThreadPool(5);
} }
...@@ -118,17 +124,17 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -118,17 +124,17 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
public Boolean call() { public Boolean call() {
try { try {
String url = bannerBean.getUrl(); String url = bannerBean.getUrl();
if(!url.contains("android.resource")){ if (!url.contains("android.resource")) {
FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever(); FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever();
mmr.setDataSource(url); mmr.setDataSource(url);
mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_ALBUM); mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_ALBUM);
mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_ARTIST); mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_ARTIST);
Bitmap b = mmr.getFrameAtTime(); // frame at 2 seconds Bitmap b = mmr.getFrameAtTime(); // frame at 2 seconds
bannerBean.setLoadingImage( BitmapUtils.getBytes(b)); bannerBean.setLoadingImage(BitmapUtils.getBytes(b));
mmr.release(); mmr.release();
} }
return true; return true;
}catch (Exception e){ } catch (Exception e) {
return false; return false;
} }
} }
...@@ -142,7 +148,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -142,7 +148,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
} }
} }
private ViewPager2.OnPageChangeCallback callback = new ViewPager2.OnPageChangeCallback() {
@Override @Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
...@@ -153,7 +159,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -153,7 +159,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
public void onPageSelected(int position) { public void onPageSelected(int position) {
autoCurrIndex = position; autoCurrIndex = position;
// Toast.makeText(context,"position="+position,Toast.LENGTH_SHORT).show(); // Toast.makeText(context,"position="+position,Toast.LENGTH_SHORT).show();
if(mList.get(position).getType() ==1){ if (mList.get(position).getType() == 1) {
//如果是视频 //如果是视频
stopBanner(); stopBanner();
} }
...@@ -163,6 +169,8 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -163,6 +169,8 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
public void onPageScrollStateChanged(int state) { public void onPageScrollStateChanged(int state) {
} }
};
//定时轮播图片，需要在主线程里面修改 UI //定时轮播图片，需要在主线程里面修改 UI
private Handler mHandler = new Handler() { private Handler mHandler = new Handler() {
...@@ -180,7 +188,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -180,7 +188,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
} }
}; };
public void stopBanner(){ public void stopBanner() {
if (timer != null) { if (timer != null) {
timer.cancel(); timer.cancel();
timer = null; timer = null;
...@@ -194,25 +202,25 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -194,25 +202,25 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
/** /**
* 设置轮播图 图片展示间隔 * 设置轮播图 图片展示间隔
*/ */
public void setPeriod(int period ){ public void setPeriod(int period) {
this.period = period; this.period = period;
} }
public void startBanner(){ public void startBanner() {
//如果第一页是视频 不用定时器 //如果第一页是视频 不用定时器
if(mList.get(0).getType() == 0){ if (mList.get(0).getType() == 0) {
startBanner(period); startBanner(period);
} }
} }
public void startBanner(long delay){ public void startBanner(long delay) {
stopBanner(); stopBanner();
timer = new Timer(); timer = new Timer();
createTimerTask();//创建定时器 createTimerTask();//创建定时器
timer.schedule(timerTask,delay,period); timer.schedule(timerTask, delay, period);
} }
public void createTimerTask(){ public void createTimerTask() {
timerTask = new TimerTask() { timerTask = new TimerTask() {
@Override @Override
public void run() { public void run() {
...@@ -229,7 +237,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -229,7 +237,7 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
@Override @Override
public void onVideoCompletion(MediaPlayer mp) { public void onVideoCompletion(MediaPlayer mp) {
if(mList.size() ==1){ if (mList.size() == 1) {
//当集合中只有一个视频时，循环播放 //当集合中只有一个视频时，循环播放
mAdapter.getFragment().circulationPlayer(); mAdapter.getFragment().circulationPlayer();
} }
...@@ -241,63 +249,59 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -241,63 +249,59 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
startBanner(0); startBanner(0);
} }
private final class ViewsPagerAdapter extends FragmentStatePagerAdapter{ private final class ViewsPagerAdapter extends FragmentStateAdapter {
private com.widget.imagevideobanner.banner.ImageVideoFragment fragment; private ImageVideoFragment fragment;
private FragmentManager fm; private FragmentManager fm;
public ViewsPagerAdapter(FragmentManager fm) {
super(fm); public ViewsPagerAdapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle) {
this.fm = fm; super(fragmentManager, lifecycle);
this.fm = fragmentManager;
} }
@NonNull
@Override @Override
public Fragment getItem(int position) { public Fragment createFragment(int position) {
fragment = new com.widget.imagevideobanner.banner.ImageVideoFragment(); fragment = new ImageVideoFragment();
fragment.setOnVideoCompletionListener(ImageVideoBanner.this); fragment.setOnVideoCompletionListener(ImageVideoBanner.this);
com.widget.imagevideobanner.bean.BannerBean bannerBean = mList.get(position); com.widget.imagebanner.bean.BannerBean bannerBean = mList.get(position);
Bundle bundle = new Bundle(); Bundle bundle = new Bundle();
bundle.putSerializable("bannerBean",bannerBean); bundle.putSerializable("bannerBean", bannerBean);
bundle.putBoolean("loop",getLoop()); bundle.putBoolean("loop", getLoop());
fragment.setArguments(bundle); fragment.setArguments(bundle);
return fragment; return fragment;
} }
@Override
public int getItemCount() {
return mList.size();
}
/** /**
* 只有1个视频的时候循环播放 * 只有1个视频的时候循环播放
*
* @return * @return
*/ */
private boolean getLoop() { private boolean getLoop() {
if(mList.size() == 1 && mList.get(0).getType() == 1){ if (mList.size() == 1 && mList.get(0).getType() == 1) {
return true; return true;
} }
return false; return false;
} }
@Override public void replaceData(List<BannerBean> listBean) {
public int getCount() {
return mList.size();
}
@Override
public int getItemPosition(Object object) {
if (mList.size() > 0) {
return POSITION_NONE;
}
return super.getItemPosition(object);
}
public void replaceData(List<BannerBean> listBean){
// 新数据和原来数据对比，不一致才去刷新 // 新数据和原来数据对比，不一致才去刷新
boolean change = compareData(listBean); boolean change = compareData(listBean);
if(!change){ if (!change) {
notifyDataSetChanged(); notifyDataSetChanged();
// startBanner(); // startBanner();
return; return;
} }
if(null != listBean){ if (null != listBean) {
mList.clear(); mList.clear();
addData(listBean); addData(listBean);
//如果第一张是图片 需要开启定时器 //如果第一张是图片 需要开启定时器
if(listBean.get(0).getType() == 0){ if (listBean.get(0).getType() == 0) {
startBanner(); startBanner();
} }
autoCurrIndex = 0; autoCurrIndex = 0;
...@@ -308,17 +312,18 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -308,17 +312,18 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
/** /**
* 对比数据 * 对比数据
*
* @param listBean * @param listBean
* @return * @return
*/ */
private boolean compareData(List<BannerBean> listBean){ private boolean compareData(List<BannerBean> listBean) {
if(listBean == null || listBean.size() == 0){ if (listBean == null || listBean.size() == 0) {
return false; return false;
} }
if(listBean.size() == mList.size()){ if (listBean.size() == mList.size()) {
for(int i = 0 ; i < mList.size() ; i++){ for (int i = 0; i < mList.size(); i++) {
if(mList.get(i).getType() != listBean.get(i).getType() if (mList.get(i).getType() != listBean.get(i).getType()
|| !mList.get(i).getUrl().equals(listBean.get(i).getUrl())){ || !mList.get(i).getUrl().equals(listBean.get(i).getUrl())) {
return true; return true;
} }
} }
...@@ -328,8 +333,8 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -328,8 +333,8 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
} }
public void addData(List<BannerBean> listBean){ public void addData(List<BannerBean> listBean) {
if(null != listBean){ if (null != listBean) {
mList.addAll(listBean); mList.addAll(listBean);
} }
initBannerBitmap(); initBannerBitmap();
...@@ -341,6 +346,5 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh ...@@ -341,6 +346,5 @@ public class ImageVideoBanner extends FrameLayout implements ViewPager.OnPageCh
} }
} }
} }
imageVideoBanner/src/main/java/com/widget/imagevideobanner/bean/BannerBean.java → banner/src/main/java/com/widget/imagebanner/bean/BannerBean.java
View file @ aecd4fe7
package com.widget.imagevideobanner.bean; package com.widget.imagebanner.bean;
import java.io.Serializable; import java.io.Serializable;
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/banner/KeyEventCompat.java → banner/src/main/java/com/widget/imagebanner/event/KeyEventCompat.java
View file @ aecd4fe7
...@@ -14,7 +14,7 @@ ...@@ -14,7 +14,7 @@
* limitations under the License. * limitations under the License.
*/ */
package com.widget.imagevideobanner.banner; package com.widget.imagebanner.event;
import android.view.KeyEvent; import android.view.KeyEvent;
...@@ -95,17 +95,17 @@ public class KeyEventCompat { ...@@ -95,17 +95,17 @@ public class KeyEventCompat {
static class HoneycombKeyEventVersionImpl implements KeyEventVersionImpl { static class HoneycombKeyEventVersionImpl implements KeyEventVersionImpl {
@Override @Override
public int normalizeMetaState(int metaState) { public int normalizeMetaState(int metaState) {
return com.widget.imagevideobanner.banner.KeyEventCompatHoneycomb.normalizeMetaState(metaState); return KeyEventCompatHoneycomb.normalizeMetaState(metaState);
} }
@Override @Override
public boolean metaStateHasModifiers(int metaState, int modifiers) { public boolean metaStateHasModifiers(int metaState, int modifiers) {
return com.widget.imagevideobanner.banner.KeyEventCompatHoneycomb.metaStateHasModifiers(metaState, modifiers); return KeyEventCompatHoneycomb.metaStateHasModifiers(metaState, modifiers);
} }
@Override @Override
public boolean metaStateHasNoModifiers(int metaState) { public boolean metaStateHasNoModifiers(int metaState) {
return com.widget.imagevideobanner.banner.KeyEventCompatHoneycomb.metaStateHasNoModifiers(metaState); return KeyEventCompatHoneycomb.metaStateHasNoModifiers(metaState);
} }
} }
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/banner/KeyEventCompatHoneycomb.java → banner/src/main/java/com/widget/imagebanner/event/KeyEventCompatHoneycomb.java
View file @ aecd4fe7
...@@ -14,7 +14,7 @@ ...@@ -14,7 +14,7 @@
* limitations under the License. * limitations under the License.
*/ */
package com.widget.imagevideobanner.banner; package com.widget.imagebanner.event;
import android.view.KeyEvent; import android.view.KeyEvent;
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/utils/BannerLogFileUtils.java → banner/src/main/java/com/widget/imagebanner/utils/BannerLogFileUtils.java
View file @ aecd4fe7
package com.widget.imagevideobanner.utils; package com.widget.imagebanner.utils;
import android.os.Environment; import android.os.Environment;
import android.text.TextUtils; import android.text.TextUtils;
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/utils/BitmapUtils.java → banner/src/main/java/com/widget/imagebanner/utils/BitmapUtils.java
View file @ aecd4fe7
package com.widget.imagevideobanner.utils; package com.widget.imagebanner.utils;
import android.graphics.Bitmap; import android.graphics.Bitmap;
import android.graphics.BitmapFactory; import android.graphics.BitmapFactory;
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/banner/ImageVideoFragment.java → banner/src/main/java/com/widget/imagebanner/view/ImageVideoFragment.java
View file @ aecd4fe7
package com.widget.imagevideobanner.banner; package com.widget.imagebanner.view;
import android.graphics.Color; import android.graphics.Color;
import android.media.MediaPlayer; import android.media.MediaPlayer;
...@@ -6,9 +6,11 @@ import android.net.Uri; ...@@ -6,9 +6,11 @@ import android.net.Uri;
import android.os.Bundle; import android.os.Bundle;
import android.os.Handler; import android.os.Handler;
import android.os.Message; import android.os.Message;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable; import androidx.annotation.NonNull;
import android.support.v4.app.Fragment; import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import android.util.Log; import android.util.Log;
import android.view.LayoutInflater; import android.view.LayoutInflater;
import android.view.View; import android.view.View;
...@@ -18,10 +20,10 @@ import android.widget.LinearLayout; ...@@ -18,10 +20,10 @@ import android.widget.LinearLayout;
import android.widget.VideoView; import android.widget.VideoView;
import com.bumptech.glide.Glide; import com.bumptech.glide.Glide;
import com.widget.imagevideobanner.R; import com.widget.imagebanner.R;
import com.widget.imagevideobanner.bean.BannerBean; import com.widget.imagebanner.bean.BannerBean;
import com.widget.imagevideobanner.utils.BannerLogFileUtils; import com.widget.imagebanner.utils.BannerLogFileUtils;
import com.widget.imagevideobanner.utils.BitmapUtils; import com.widget.imagebanner.utils.BitmapUtils;
import java.io.File; import java.io.File;
...@@ -88,10 +90,10 @@ public class ImageVideoFragment extends Fragment { ...@@ -88,10 +90,10 @@ public class ImageVideoFragment extends Fragment {
view = LayoutInflater.from(getActivity()).inflate(R.layout.item_image_view, container, false); view = LayoutInflater.from(getActivity()).inflate(R.layout.item_image_view, container, false);
ImageView imageView = view.findViewById(R.id.iv); ImageView imageView = view.findViewById(R.id.iv);
File file = new File(bannerBean.getUrl()); File file = new File(bannerBean.getUrl());
if(file.exists()){ if (file.exists()) {
Glide.with(container.getContext()).load(file) Glide.with(container.getContext()).load(file)
.into(imageView); .into(imageView);
}else { } else {
Glide.with(container.getContext()).load(bannerBean.getUrl()) Glide.with(container.getContext()).load(bannerBean.getUrl())
.into(imageView); .into(imageView);
} }
...@@ -116,16 +118,16 @@ public class ImageVideoFragment extends Fragment { ...@@ -116,16 +118,16 @@ public class ImageVideoFragment extends Fragment {
*/ */
public void setPicture() { public void setPicture() {
//视频未加载完成，使用菊花 //视频未加载完成，使用菊花
if(bannerBean.getLoadingImage() == null){ if (bannerBean.getLoadingImage() == null) {
if(bannerBean.getUrl().contains("android.resource")){ if (bannerBean.getUrl().contains("android.resource")) {
ivWaitLoading.setVisibility(View.VISIBLE); ivWaitLoading.setVisibility(View.VISIBLE);
ivWaitLoading.setImageResource(R.drawable.guide_defaut); ivWaitLoading.setImageResource(R.drawable.guide_defaut);
llWaitLoading.setVisibility(View.GONE); llWaitLoading.setVisibility(View.GONE);
}else{ } else {
ivWaitLoading.setVisibility(View.GONE); ivWaitLoading.setVisibility(View.GONE);
llWaitLoading.setVisibility(View.VISIBLE); llWaitLoading.setVisibility(View.VISIBLE);
} }
}else{//加载完成使用首帧图片 } else {//加载完成使用首帧图片
ivWaitLoading.setVisibility(View.VISIBLE); ivWaitLoading.setVisibility(View.VISIBLE);
ivWaitLoading.setImageBitmap(BitmapUtils.getBitmap(bannerBean.getLoadingImage())); ivWaitLoading.setImageBitmap(BitmapUtils.getBitmap(bannerBean.getLoadingImage()));
llWaitLoading.setVisibility(View.GONE); llWaitLoading.setVisibility(View.GONE);
...@@ -142,7 +144,7 @@ public class ImageVideoFragment extends Fragment { ...@@ -142,7 +144,7 @@ public class ImageVideoFragment extends Fragment {
mVideoView.requestFocus(); mVideoView.requestFocus();
try { try {
mVideoView.setVideoURI(Uri.parse(bannerBean.getUrl())); mVideoView.setVideoURI(Uri.parse(bannerBean.getUrl()));
}catch (Exception e){ } catch (Exception e) {
} }
mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
...@@ -221,7 +223,7 @@ public class ImageVideoFragment extends Fragment { ...@@ -221,7 +223,7 @@ public class ImageVideoFragment extends Fragment {
public void startPlayer() { public void startPlayer() {
if (null != mVideoView) { if (null != mVideoView) {
// setWaitLoading(); // setWaitLoading();
Log.e(TAG, "startPlayer "+currentPosition); Log.e(TAG, "startPlayer " + currentPosition);
mVideoView.setBackgroundColor(Color.TRANSPARENT); mVideoView.setBackgroundColor(Color.TRANSPARENT);
mVideoView.seekTo(currentPosition); mVideoView.seekTo(currentPosition);
mVideoView.start(); mVideoView.start();
...@@ -265,8 +267,8 @@ public class ImageVideoFragment extends Fragment { ...@@ -265,8 +267,8 @@ public class ImageVideoFragment extends Fragment {
private void pausePlayer() { private void pausePlayer() {
if (null != mVideoView) { if (null != mVideoView) {
Log.e(TAG, "pausePlayer 当前进度是"+mVideoView.getCurrentPosition()); Log.e(TAG, "pausePlayer 当前进度是" + mVideoView.getCurrentPosition());
mVideoView.setBackgroundColor(getResources().getColor(R.color.white)); mVideoView.setBackgroundColor(getResources().getColor(android.R.color.white));
playerPaused = true; playerPaused = true;
this.currentPosition = mVideoView.getCurrentPosition(); this.currentPosition = mVideoView.getCurrentPosition();
mVideoView.pause(); mVideoView.pause();
......
imageVideoBanner/src/main/res/layout/banner_imge_video.xml → banner/src/main/res/layout/banner_imge_video.xml
View file @ aecd4fe7
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent"> android:layout_height="match_parent">
<com.widget.imagevideobanner.banner.ViewPager <androidx.viewpager2.widget.ViewPager2
android:id="@+id/view_pager" android:id="@+id/view_pager"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="wrap_content" android:layout_height="wrap_content"
...@@ -14,4 +13,4 @@ ...@@ -14,4 +13,4 @@
app:layout_constraintStart_toStartOf="parent" app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" /> app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout> </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file \ No newline at end of file
imageVideoBanner/src/main/res/layout/item_image_view.xml → banner/src/main/res/layout/item_image_view.xml
View file @ aecd4fe7
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout <androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent"> android:layout_height="match_parent">
...@@ -10,4 +10,4 @@ ...@@ -10,4 +10,4 @@
android:layout_height="match_parent" android:layout_height="match_parent"
android:scaleType="fitXY"/> android:scaleType="fitXY"/>
</android.support.constraint.ConstraintLayout> </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file \ No newline at end of file
imageVideoBanner/src/main/res/layout/item_video_view.xml → banner/src/main/res/layout/item_video_view.xml
View file @ aecd4fe7
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent"> android:layout_height="match_parent">
...@@ -27,7 +27,7 @@ ...@@ -27,7 +27,7 @@
app:layout_constraintEnd_toEndOf="parent" app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" app:layout_constraintStart_toStartOf="parent"
android:gravity="center" android:gravity="center"
android:background="@color/white" android:background="#fff"
android:orientation="vertical"> android:orientation="vertical">
<LinearLayout <LinearLayout
...@@ -57,4 +57,4 @@ ...@@ -57,4 +57,4 @@
</LinearLayout> </LinearLayout>
</android.support.constraint.ConstraintLayout> </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file \ No newline at end of file
banner/src/test/java/com/widget/imagebanner/ExampleUnitTest.java 0 → 100644
View file @ aecd4fe7
package com.widget.imagebanner;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Example local unit test, which will execute on the development machine (host).
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
public class ExampleUnitTest {
@Test
public void addition_isCorrect() {
assertEquals(4, 2 + 2);
}
}
\ No newline at end of file
gradle.properties
View file @ aecd4fe7
...@@ -9,6 +9,8 @@ ...@@ -9,6 +9,8 @@
# Specifies the JVM arguments used for the daemon process. # Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings. # The setting is particularly useful for tweaking memory settings.
android.enableJetifier=true
android.useAndroidX=true
org.gradle.jvmargs=-Xmx1536m org.gradle.jvmargs=-Xmx1536m
# When configured, Gradle will run in incubating parallel mode. # When configured, Gradle will run in incubating parallel mode.
......
imageVideoBanner/build.gradle
View file @ aecd4fe7
...@@ -4,10 +4,10 @@ android { ...@@ -4,10 +4,10 @@ android {
compileSdkVersion 28 compileSdkVersion 28
defaultConfig { defaultConfig {
minSdkVersion 18 minSdkVersion 18
targetSdkVersion 22 targetSdkVersion 28
versionCode 1 versionCode 1
versionName "1.0" versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
} }
buildTypes { buildTypes {
release { release {
...@@ -19,13 +19,8 @@ android { ...@@ -19,13 +19,8 @@ android {
dependencies { dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar']) implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.0' implementation project(':banner')
implementation 'com.github.bumptech.glide:glide:3.7.0'
//当需要FFmpegMediaMetadataRetriever时必选
implementation 'com.github.wseemann:FFmpegMediaMetadataRetriever-armeabi-v7a:1.0.14'
implementation 'com.wang.avi:library:2.1.3'
// compile 'com.github.wseemann:FFmpegMediaMetadataRetriever:1.0.14' // compile 'com.github.wseemann:FFmpegMediaMetadataRetriever:1.0.14'
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/MainActivity.java
View file @ aecd4fe7
...@@ -3,11 +3,11 @@ package com.widget.imagevideobanner; ...@@ -3,11 +3,11 @@ package com.widget.imagevideobanner;
import android.content.Intent; import android.content.Intent;
import android.os.Bundle; import android.os.Bundle;
import android.os.Environment; import android.os.Environment;
import android.support.v7.app.AppCompatActivity; import androidx.appcompat.app.AppCompatActivity;
import android.util.Log; import android.util.Log;
import com.widget.imagevideobanner.banner.ImageVideoBanner; import com.widget.imagebanner.ImageVideoBanner;
import com.widget.imagevideobanner.bean.BannerBean; import com.widget.imagebanner.bean.BannerBean;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
......
imageVideoBanner/src/main/java/com/widget/imagevideobanner/banner/ViewPager.java deleted 100644 → 0
View file @ cf29174d
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.widget.imagevideobanner.banner;
import android.content.Context;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.support.v4.os.ParcelableCompat;
import android.support.v4.os.ParcelableCompatCreatorCallbacks;
import android.support.v4.view.MotionEventCompat;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.VelocityTrackerCompat;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewConfigurationCompat;
import android.support.v4.widget.EdgeEffectCompat;
import android.util.AttributeSet;
import android.util.Log;
import android.view.FocusFinder;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.SoundEffectConstants;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.Interpolator;
import android.widget.Scroller;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
/**
* Layout manager that allows the user to flip left and right
* through pages of data. You supply an implementation of a
* {@link PagerAdapter} to generate the pages that the view shows.
*
* <p>Note this class is currently under early design and
* development. The API will likely change in later updates of
* the compatibility library, requiring changes to the source code
* of apps when they are compiled against the newer version.</p>
*
* <p>ViewPager is most often used in conjunction with {@link android.app.Fragment},
* which is a convenient way to supply and manage the lifecycle of each page.
* There are standard adapters implemented for using fragments with the ViewPager,
* which cover the most common use cases. These are
* {@link android.support.v4.app.FragmentPagerAdapter},
* {@link android.support.v4.app.FragmentStatePagerAdapter},
* {@link android.support.v13.app.FragmentPagerAdapter}, and
* {@link android.support.v13.app.FragmentStatePagerAdapter}; each of these
* classes have simple code showing how to build a full user interface
* with them.
*
* <p>Here is a more complicated example of ViewPager, using it in conjuction
* with {@link android.app.ActionBar} tabs. You can find other examples of using
* ViewPager in the API 4+ Support Demos and API 13+ Support Demos sample code.
*
* {@sample development/samples/Support13Demos/src/com/example/android/supportv13/app/ActionBarTabsPager.java
* complete}
*/
public class ViewPager extends ViewGroup {
private static final String TAG = "ViewPager";
private static final boolean DEBUG = false;
private static final boolean USE_CACHE = false;
private static final int DEFAULT_OFFSCREEN_PAGES = 0;//默认是1，这里直接改为0
private static final int MAX_SETTLE_DURATION = 600; // ms
private static final int MIN_DISTANCE_FOR_FLING = 25; // dips
private static final int[] LAYOUT_ATTRS = new int[] {
android.R.attr.layout_gravity
};
static class ItemInfo {
Object object;
int position;
boolean scrolling;
}
private static final Comparator<ItemInfo> COMPARATOR = new Comparator<ItemInfo>(){
@Override
public int compare(ItemInfo lhs, ItemInfo rhs) {
return lhs.position - rhs.position;
}};
private static final Interpolator sInterpolator = new Interpolator() {
public float getInterpolation(float t) {
t -= 1.0f;
return t * t * t * t * t + 1.0f;
}
};
private final ArrayList<ItemInfo> mItems = new ArrayList<ItemInfo>();
private PagerAdapter mAdapter;
private int mCurItem; // Index of currently displayed page.
private int mRestoredCurItem = -1;
private Parcelable mRestoredAdapterState = null;
private ClassLoader mRestoredClassLoader = null;
private Scroller mScroller;
private PagerObserver mObserver;
private int mPageMargin;
private Drawable mMarginDrawable;
private int mTopPageBounds;
private int mBottomPageBounds;
private int mChildWidthMeasureSpec;
private int mChildHeightMeasureSpec;
private boolean mInLayout;
private boolean mScrollingCacheEnabled;
private boolean mPopulatePending;
private boolean mScrolling;
private int mOffscreenPageLimit = DEFAULT_OFFSCREEN_PAGES;
private boolean mIsBeingDragged;
private boolean mIsUnableToDrag;
private int mTouchSlop;
private float mInitialMotionX;
/**
* Position of the last motion event.
*/
private float mLastMotionX;
private float mLastMotionY;
/**
* ID of the active pointer. This is used to retain consistency during
* drags/flings if multiple pointers are used.
*/
private int mActivePointerId = INVALID_POINTER;
/**
* Sentinel value for no current active pointer.
* Used by {@link #mActivePointerId}.
*/
private static final int INVALID_POINTER = -1;
/**
* Determines speed during touch scrolling
*/
private VelocityTracker mVelocityTracker;
private int mMinimumVelocity;
private int mMaximumVelocity;
private int mFlingDistance;
private boolean mFakeDragging;
private long mFakeDragBeginTime;
private EdgeEffectCompat mLeftEdge;
private EdgeEffectCompat mRightEdge;
private boolean mFirstLayout = true;
private boolean mCalledSuper;
private int mDecorChildCount;
private OnPageChangeListener mOnPageChangeListener;
private OnPageChangeListener mInternalPageChangeListener;
private OnAdapterChangeListener mAdapterChangeListener;
/**
* Indicates that the pager is in an idle, settled state. The current page
* is fully in view and no animation is in progress.
*/
public static final int SCROLL_STATE_IDLE = 0;
/**
* Indicates that the pager is currently being dragged by the user.
*/
public static final int SCROLL_STATE_DRAGGING = 1;
/**
* Indicates that the pager is in the process of settling to a final position.
*/
public static final int SCROLL_STATE_SETTLING = 2;
private int mScrollState = SCROLL_STATE_IDLE;
/**
* Callback interface for responding to changing state of the selected page.
*/
public interface OnPageChangeListener {
/**
* This method will be invoked when the current page is scrolled, either as part
* of a programmatically initiated smooth scroll or a user initiated touch scroll.
*
* @param position Position index of the first page currently being displayed.
* Page position+1 will be visible if positionOffset is nonzero.
* @param positionOffset Value from [0, 1) indicating the offset from the page at position.
* @param positionOffsetPixels Value in pixels indicating the offset from position.
*/
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels);
/**
* This method will be invoked when a new page becomes selected. Animation is not
* necessarily complete.
*
* @param position Position index of the new selected page.
*/
public void onPageSelected(int position);
/**
* Called when the scroll state changes. Useful for discovering when the user
* begins dragging, when the pager is automatically settling to the current page,
* or when it is fully stopped/idle.
*
* @param state The new scroll state.
* @see ViewPager#SCROLL_STATE_IDLE
* @see ViewPager#SCROLL_STATE_DRAGGING
* @see ViewPager#SCROLL_STATE_SETTLING
*/
public void onPageScrollStateChanged(int state);
}
/**
* Simple implementation of the {@link OnPageChangeListener} interface with stub
* implementations of each method. Extend this if you do not intend to override
* every method of {@link OnPageChangeListener}.
*/
public static class SimpleOnPageChangeListener implements OnPageChangeListener {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
// This space for rent
}
@Override
public void onPageSelected(int position) {
// This space for rent
}
@Override
public void onPageScrollStateChanged(int state) {
// This space for rent
}
}
/**
* Used internally to monitor when adapters are switched.
*/
interface OnAdapterChangeListener {
public void onAdapterChanged(PagerAdapter oldAdapter, PagerAdapter newAdapter);
}
/**
* Used internally to tag special types of child views that should be added as
* pager decorations by default.
*/
interface Decor {}
public ViewPager(Context context) {
super(context);
initViewPager();
}
public ViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
initViewPager();
}
void initViewPager() {
setWillNotDraw(false);
setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
setFocusable(true);
final Context context = getContext();
mScroller = new Scroller(context, sInterpolator);
final ViewConfiguration configuration = ViewConfiguration.get(context);
mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
mLeftEdge = new EdgeEffectCompat(context);
mRightEdge = new EdgeEffectCompat(context);
final float density = context.getResources().getDisplayMetrics().density;
mFlingDistance = (int) (MIN_DISTANCE_FOR_FLING * density);
}
private void setScrollState(int newState) {
if (mScrollState == newState) {
return;
}
mScrollState = newState;
if (mOnPageChangeListener != null) {
mOnPageChangeListener.onPageScrollStateChanged(newState);
}
}
/**
* Set a PagerAdapter that will supply views for this pager as needed.
*
* @param adapter Adapter to use
*/
public void setAdapter(PagerAdapter adapter) {
if (mAdapter != null) {
mAdapter.unregisterDataSetObserver(mObserver);
mAdapter.startUpdate(this);
for (int i = 0; i < mItems.size(); i++) {
final ItemInfo ii = mItems.get(i);
mAdapter.destroyItem(this, ii.position, ii.object);
}
mAdapter.finishUpdate(this);
mItems.clear();
removeNonDecorViews();
mCurItem = 0;
scrollTo(0, 0);
}
final PagerAdapter oldAdapter = mAdapter;
mAdapter = adapter;
if (mAdapter != null) {
if (mObserver == null) {
mObserver = new PagerObserver();
}
mAdapter.registerDataSetObserver(mObserver);
mPopulatePending = false;
if (mRestoredCurItem >= 0) {
mAdapter.restoreState(mRestoredAdapterState, mRestoredClassLoader);
setCurrentItemInternal(mRestoredCurItem, false, true);
mRestoredCurItem = -1;
mRestoredAdapterState = null;
mRestoredClassLoader = null;
} else {
populate();
}
}
if (mAdapterChangeListener != null && oldAdapter != adapter) {
mAdapterChangeListener.onAdapterChanged(oldAdapter, adapter);
}
}
private void removeNonDecorViews() {
for (int i = 0; i < getChildCount(); i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (!lp.isDecor) {
removeViewAt(i);
i--;
}
}
}
/**
* Retrieve the current adapter supplying pages.
*
* @return The currently registered PagerAdapter
*/
public PagerAdapter getAdapter() {
return mAdapter;
}
void setOnAdapterChangeListener(OnAdapterChangeListener listener) {
mAdapterChangeListener = listener;
}
/**
* Set the currently selected page. If the ViewPager has already been through its first
* layout there will be a smooth animated transition between the current item and the
* specified item.
*
* @param item Item index to select
*/
public void setCurrentItem(int item) {
mPopulatePending = false;
setCurrentItemInternal(item, !mFirstLayout, false);
}
/**
* Set the currently selected page.
*
* @param item Item index to select
* @param smoothScroll True to smoothly scroll to the new item, false to transition immediately
*/
public void setCurrentItem(int item, boolean smoothScroll) {
mPopulatePending = false;
setCurrentItemInternal(item, smoothScroll, false);
}
public int getCurrentItem() {
return mCurItem;
}
void setCurrentItemInternal(int item, boolean smoothScroll, boolean always) {
setCurrentItemInternal(item, smoothScroll, always, 0);
}
void setCurrentItemInternal(int item, boolean smoothScroll, boolean always, int velocity) {
if (mAdapter == null || mAdapter.getCount() <= 0) {
setScrollingCacheEnabled(false);
return;
}
if (!always && mCurItem == item && mItems.size() != 0) {
setScrollingCacheEnabled(false);
return;
}
if (item < 0) {
item = 0;
} else if (item >= mAdapter.getCount()) {
item = mAdapter.getCount() - 1;
}
final int pageLimit = mOffscreenPageLimit;
if (item > (mCurItem + pageLimit) || item < (mCurItem - pageLimit)) {
// We are doing a jump by more than one page. To avoid
// glitches, we want to keep all current pages in the view
// until the scroll ends.
for (int i=0; i<mItems.size(); i++) {
mItems.get(i).scrolling = true;
}
}
final boolean dispatchSelected = mCurItem != item;
mCurItem = item;
populate();
final int destX = (getWidth() + mPageMargin) * item;
if (smoothScroll) {
smoothScrollTo(destX, 0, velocity);
if (dispatchSelected && mOnPageChangeListener != null) {
mOnPageChangeListener.onPageSelected(item);
}
if (dispatchSelected && mInternalPageChangeListener != null) {
mInternalPageChangeListener.onPageSelected(item);
}
} else {
if (dispatchSelected && mOnPageChangeListener != null) {
mOnPageChangeListener.onPageSelected(item);
}
if (dispatchSelected && mInternalPageChangeListener != null) {
mInternalPageChangeListener.onPageSelected(item);
}
completeScroll();
scrollTo(destX, 0);
}
}
/**
* Set a listener that will be invoked whenever the page changes or is incrementally
* scrolled. See {@link OnPageChangeListener}.
*
* @param listener Listener to set
*/
public void setOnPageChangeListener(OnPageChangeListener listener) {
mOnPageChangeListener = listener;
}
/**
* Set a separate OnPageChangeListener for internal use by the support library.
*
* @param listener Listener to set
* @return The old listener that was set, if any.
*/
OnPageChangeListener setInternalPageChangeListener(OnPageChangeListener listener) {
OnPageChangeListener oldListener = mInternalPageChangeListener;
mInternalPageChangeListener = listener;
return oldListener;
}
/**
* Returns the number of pages that will be retained to either side of the
* current page in the view hierarchy in an idle state. Defaults to 1.
*
* @return How many pages will be kept offscreen on either side
* @see #setOffscreenPageLimit(int)
*/
public int getOffscreenPageLimit() {
return mOffscreenPageLimit;
}
/**
* Set the number of pages that should be retained to either side of the
* current page in the view hierarchy in an idle state. Pages beyond this
* limit will be recreated from the adapter when needed.
*
* <p>This is offered as an optimization. If you know in advance the number
* of pages you will need to support or have lazy-loading mechanisms in place
* on your pages, tweaking this setting can have benefits in perceived smoothness
* of paging animations and interaction. If you have a small number of pages (3-4)
* that you can keep active all at once, less time will be spent in layout for
* newly created view subtrees as the user pages back and forth.</p>
*
* <p>You should keep this limit low, especially if your pages have complex layouts.
* This setting defaults to 1.</p>
*
* @param limit How many pages will be kept offscreen in an idle state.
*/
public void setOffscreenPageLimit(int limit) {
if (limit < DEFAULT_OFFSCREEN_PAGES) {
Log.w(TAG, "Requested offscreen page limit " + limit + " too small; defaulting to " +
DEFAULT_OFFSCREEN_PAGES);
limit = DEFAULT_OFFSCREEN_PAGES;
}
if (limit != mOffscreenPageLimit) {
mOffscreenPageLimit = limit;
populate();
}
}
/**
* Set the margin between pages.
*
* @param marginPixels Distance between adjacent pages in pixels
* @see #getPageMargin()
* @see #setPageMarginDrawable(Drawable)
* @see #setPageMarginDrawable(int)
*/
public void setPageMargin(int marginPixels) {
final int oldMargin = mPageMargin;
mPageMargin = marginPixels;
final int width = getWidth();
recomputeScrollPosition(width, width, marginPixels, oldMargin);
requestLayout();
}
/**
* Return the margin between pages.
*
* @return The size of the margin in pixels
*/
public int getPageMargin() {
return mPageMargin;
}
/**
* Set a drawable that will be used to fill the margin between pages.
*
* @param d Drawable to display between pages
*/
public void setPageMarginDrawable(Drawable d) {
mMarginDrawable = d;
if (d != null) refreshDrawableState();
setWillNotDraw(d == null);
invalidate();
}
/**
* Set a drawable that will be used to fill the margin between pages.
*
* @param resId Resource ID of a drawable to display between pages
*/
public void setPageMarginDrawable(int resId) {
setPageMarginDrawable(getContext().getResources().getDrawable(resId));
}
@Override
protected boolean verifyDrawable(Drawable who) {
return super.verifyDrawable(who) || who == mMarginDrawable;
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
final Drawable d = mMarginDrawable;
if (d != null && d.isStateful()) {
d.setState(getDrawableState());
}
}
// We want the duration of the page snap animation to be influenced by the distance that
// the screen has to travel, however, we don't want this duration to be effected in a
// purely linear fashion. Instead, we use this method to moderate the effect that the distance
// of travel has on the overall snap duration.
float distanceInfluenceForSnapDuration(float f) {
f -= 0.5f; // center the values about 0.
f *= 0.3f * Math.PI / 2.0f;
return (float) Math.sin(f);
}
/**
* Like {@link View#scrollBy}, but scroll smoothly instead of immediately.
*
* @param x the number of pixels to scroll by on the X axis
* @param y the number of pixels to scroll by on the Y axis
*/
void smoothScrollTo(int x, int y) {
smoothScrollTo(x, y, 0);
}
/**
* Like {@link View#scrollBy}, but scroll smoothly instead of immediately.
*
* @param x the number of pixels to scroll by on the X axis
* @param y the number of pixels to scroll by on the Y axis
* @param velocity the velocity associated with a fling, if applicable. (0 otherwise)
*/
void smoothScrollTo(int x, int y, int velocity) {
if (getChildCount() == 0) {
// Nothing to do.
setScrollingCacheEnabled(false);
return;
}
int sx = getScrollX();
int sy = getScrollY();
int dx = x - sx;
int dy = y - sy;
if (dx == 0 && dy == 0) {
completeScroll();
setScrollState(SCROLL_STATE_IDLE);
return;
}
setScrollingCacheEnabled(true);
mScrolling = true;
setScrollState(SCROLL_STATE_SETTLING);
final int width = getWidth();
final int halfWidth = width / 2;
final float distanceRatio = Math.min(1f, 1.0f * Math.abs(dx) / width);
final float distance = halfWidth + halfWidth *
distanceInfluenceForSnapDuration(distanceRatio);
int duration = 0;
velocity = Math.abs(velocity);
if (velocity > 0) {
duration = 4 * Math.round(1000 * Math.abs(distance / velocity));
} else {
final float pageDelta = (float) Math.abs(dx) / (width + mPageMargin);
duration = (int) ((pageDelta + 1) * 100);
}
duration = Math.min(duration, MAX_SETTLE_DURATION);
mScroller.startScroll(sx, sy, dx, dy, duration);
invalidate();
}
void addNewItem(int position, int index) {
ItemInfo ii = new ItemInfo();
ii.position = position;
ii.object = mAdapter.instantiateItem(this, position);
if (index < 0) {
mItems.add(ii);
} else {
mItems.add(index, ii);
}
}
void dataSetChanged() {
// This method only gets called if our observer is attached, so mAdapter is non-null.
boolean needPopulate = mItems.size() < 3 && mItems.size() < mAdapter.getCount();
int newCurrItem = -1;
boolean isUpdating = false;
for (int i = 0; i < mItems.size(); i++) {
final ItemInfo ii = mItems.get(i);
final int newPos = mAdapter.getItemPosition(ii.object);
if (newPos == PagerAdapter.POSITION_UNCHANGED) {
continue;
}
if (newPos == PagerAdapter.POSITION_NONE) {
mItems.remove(i);
i--;
if (!isUpdating) {
mAdapter.startUpdate(this);
isUpdating = true;
}
mAdapter.destroyItem(this, ii.position, ii.object);
needPopulate = true;
if (mCurItem == ii.position) {
// Keep the current item in the valid range
newCurrItem = Math.max(0, Math.min(mCurItem, mAdapter.getCount() - 1));
}
continue;
}
if (ii.position != newPos) {
if (ii.position == mCurItem) {
// Our current item changed position. Follow it.
newCurrItem = newPos;
}
ii.position = newPos;
needPopulate = true;
}
}
if (isUpdating) {
mAdapter.finishUpdate(this);
}
Collections.sort(mItems, COMPARATOR);
if (newCurrItem >= 0) {
// TODO This currently causes a jump.
setCurrentItemInternal(newCurrItem, false, true);
needPopulate = true;
}
if (needPopulate) {
populate();
requestLayout();
}
}
void populate() {
if (mAdapter == null) {
return;
}
// Bail now if we are waiting to populate. This is to hold off
// on creating views from the time the user releases their finger to
// fling to a new position until we have finished the scroll to
// that position, avoiding glitches from happening at that point.
if (mPopulatePending) {
if (DEBUG) Log.i(TAG, "populate is pending, skipping for now...");
return;
}
// Also, don't populate until we are attached to a window. This is to
// avoid trying to populate before we have restored our view hierarchy
// state and conflicting with what is restored.
if (getWindowToken() == null) {
return;
}
mAdapter.startUpdate(this);
final int pageLimit = mOffscreenPageLimit;
final int startPos = Math.max(0, mCurItem - pageLimit);
final int N = mAdapter.getCount();
final int endPos = Math.min(N-1, mCurItem + pageLimit);
if (DEBUG) Log.v(TAG, "populating: startPos=" + startPos + " endPos=" + endPos);
// Add and remove pages in the existing list.
int lastPos = -1;
for (int i=0; i<mItems.size(); i++) {
ItemInfo ii = mItems.get(i);
if ((ii.position < startPos || ii.position > endPos) && !ii.scrolling) {
if (DEBUG) Log.i(TAG, "removing: " + ii.position + " @ " + i);
mItems.remove(i);
i--;
mAdapter.destroyItem(this, ii.position, ii.object);
} else if (lastPos < endPos && ii.position > startPos) {
// The next item is outside of our range, but we have a gap
// between it and the last item where we want to have a page
// shown. Fill in the gap.
lastPos++;
if (lastPos < startPos) {
lastPos = startPos;
}
while (lastPos <= endPos && lastPos < ii.position) {
if (DEBUG) Log.i(TAG, "inserting: " + lastPos + " @ " + i);
addNewItem(lastPos, i);
lastPos++;
i++;
}
}
lastPos = ii.position;
}
// Add any new pages we need at the end.
lastPos = mItems.size() > 0 ? mItems.get(mItems.size()-1).position : -1;
if (lastPos < endPos) {
lastPos++;
lastPos = lastPos > startPos ? lastPos : startPos;
while (lastPos <= endPos) {
if (DEBUG) Log.i(TAG, "appending: " + lastPos);
addNewItem(lastPos, -1);
lastPos++;
}
}
if (DEBUG) {
Log.i(TAG, "Current page list:");
for (int i=0; i<mItems.size(); i++) {
Log.i(TAG, "#" + i + ": page " + mItems.get(i).position);
}
}
ItemInfo curItem = null;
for (int i=0; i<mItems.size(); i++) {
if (mItems.get(i).position == mCurItem) {
curItem = mItems.get(i);
break;
}
}
mAdapter.setPrimaryItem(this, mCurItem, curItem != null ? curItem.object : null);
mAdapter.finishUpdate(this);
if (hasFocus()) {
View currentFocused = findFocus();
ItemInfo ii = currentFocused != null ? infoForAnyChild(currentFocused) : null;
if (ii == null || ii.position != mCurItem) {
for (int i=0; i<getChildCount(); i++) {
View child = getChildAt(i);
ii = infoForChild(child);
if (ii != null && ii.position == mCurItem) {
if (child.requestFocus(FOCUS_FORWARD)) {
break;
}
}
}
}
}
}
/**
* This is the persistent state that is saved by ViewPager. Only needed
* if you are creating a sublass of ViewPager that must save its own
* state, in which case it should implement a subclass of this which
* contains that state.
*/
public static class SavedState extends BaseSavedState {
int position;
Parcelable adapterState;
ClassLoader loader;
public SavedState(Parcelable superState) {
super(superState);
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(position);
out.writeParcelable(adapterState, flags);
}
@Override
public String toString() {
return "FragmentPager.SavedState{"
+ Integer.toHexString(System.identityHashCode(this))
+ " position=" + position + "}";
}
public static final Parcelable.Creator<SavedState> CREATOR
= ParcelableCompat.newCreator(new ParcelableCompatCreatorCallbacks<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in, ClassLoader loader) {
return new SavedState(in, loader);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
});
SavedState(Parcel in, ClassLoader loader) {
super(in);
if (loader == null) {
loader = getClass().getClassLoader();
}
position = in.readInt();
adapterState = in.readParcelable(loader);
this.loader = loader;
}
}
@Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.position = mCurItem;
if (mAdapter != null) {
ss.adapterState = mAdapter.saveState();
}
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
if (!(state instanceof SavedState)) {
super.onRestoreInstanceState(state);
return;
}
SavedState ss = (SavedState)state;
super.onRestoreInstanceState(ss.getSuperState());
if (mAdapter != null) {
mAdapter.restoreState(ss.adapterState, ss.loader);
setCurrentItemInternal(ss.position, false, true);
} else {
mRestoredCurItem = ss.position;
mRestoredAdapterState = ss.adapterState;
mRestoredClassLoader = ss.loader;
}
}
@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
if (!checkLayoutParams(params)) {
params = generateLayoutParams(params);
}
final LayoutParams lp = (LayoutParams) params;
lp.isDecor |= child instanceof Decor;
if (mInLayout) {
if (lp != null && lp.isDecor) {
throw new IllegalStateException("Cannot add pager decor view during layout");
}
addViewInLayout(child, index, params);
child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
} else {
super.addView(child, index, params);
}
if (USE_CACHE) {
if (child.getVisibility() != GONE) {
child.setDrawingCacheEnabled(mScrollingCacheEnabled);
} else {
child.setDrawingCacheEnabled(false);
}
}
}
ItemInfo infoForChild(View child) {
for (int i=0; i<mItems.size(); i++) {
ItemInfo ii = mItems.get(i);
if (mAdapter.isViewFromObject(child, ii.object)) {
return ii;
}
}
return null;
}
ItemInfo infoForAnyChild(View child) {
ViewParent parent;
while ((parent=child.getParent()) != this) {
if (parent == null || !(parent instanceof View)) {
return null;
}
child = (View)parent;
}
return infoForChild(child);
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
mFirstLayout = true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// For simple implementation, or internal size is always 0.
// We depend on the container to specify the layout size of
// our view. We can't really know what it is since we will be
// adding and removing different arbitrary views and do not
// want the layout to change as this happens.
setMeasuredDimension(getDefaultSize(0, widthMeasureSpec),
getDefaultSize(0, heightMeasureSpec));
// Children are just made to fill our space.
int childWidthSize = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
int childHeightSize = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
/*
* Make sure all children have been properly measured. Decor views first.
* Right now we cheat and make this less complicated by assuming decor
* views won't intersect. We will pin to edges based on gravity.
*/
int size = getChildCount();
for (int i = 0; i < size; ++i) {
final View child = getChildAt(i);
if (child.getVisibility() != GONE) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp != null && lp.isDecor) {
final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
Log.d(TAG, "gravity: " + lp.gravity + " hgrav: " + hgrav + " vgrav: " + vgrav);
int widthMode = MeasureSpec.AT_MOST;
int heightMode = MeasureSpec.AT_MOST;
boolean consumeVertical = vgrav == Gravity.TOP || vgrav == Gravity.BOTTOM;
boolean consumeHorizontal = hgrav == Gravity.LEFT || hgrav == Gravity.RIGHT;
if (consumeVertical) {
widthMode = MeasureSpec.EXACTLY;
} else if (consumeHorizontal) {
heightMode = MeasureSpec.EXACTLY;
}
final int widthSpec = MeasureSpec.makeMeasureSpec(childWidthSize, widthMode);
final int heightSpec = MeasureSpec.makeMeasureSpec(childHeightSize, heightMode);
child.measure(widthSpec, heightSpec);
if (consumeVertical) {
childHeightSize -= child.getMeasuredHeight();
} else if (consumeHorizontal) {
childWidthSize -= child.getMeasuredWidth();
}
}
}
}
mChildWidthMeasureSpec = MeasureSpec.makeMeasureSpec(childWidthSize, MeasureSpec.EXACTLY);
mChildHeightMeasureSpec = MeasureSpec.makeMeasureSpec(childHeightSize, MeasureSpec.EXACTLY);
// Make sure we have created all fragments that we need to have shown.
mInLayout = true;
populate();
mInLayout = false;
// Page views next.
size = getChildCount();
for (int i = 0; i < size; ++i) {
final View child = getChildAt(i);
if (child.getVisibility() != GONE) {
if (DEBUG) Log.v(TAG, "Measuring #" + i + " " + child
+ ": " + mChildWidthMeasureSpec);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp == null || !lp.isDecor) {
child.measure(mChildWidthMeasureSpec, mChildHeightMeasureSpec);
}
}
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// Make sure scroll position is set correctly.
if (w != oldw) {
recomputeScrollPosition(w, oldw, mPageMargin, mPageMargin);
}
}
private void recomputeScrollPosition(int width, int oldWidth, int margin, int oldMargin) {
final int widthWithMargin = width + margin;
if (oldWidth > 0) {
final int oldScrollPos = getScrollX();
final int oldwwm = oldWidth + oldMargin;
final int oldScrollItem = oldScrollPos / oldwwm;
final float scrollOffset = (float) (oldScrollPos % oldwwm) / oldwwm;
final int scrollPos = (int) ((oldScrollItem + scrollOffset) * widthWithMargin);
scrollTo(scrollPos, getScrollY());
if (!mScroller.isFinished()) {
// We now return to your regularly scheduled scroll, already in progress.
final int newDuration = mScroller.getDuration() - mScroller.timePassed();
mScroller.startScroll(scrollPos, 0, mCurItem * widthWithMargin, 0, newDuration);
}
} else {
int scrollPos = mCurItem * widthWithMargin;
if (scrollPos != getScrollX()) {
completeScroll();
scrollTo(scrollPos, getScrollY());
}
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
mInLayout = true;
populate();
mInLayout = false;
final int count = getChildCount();
int width = r - l;
int height = b - t;
int paddingLeft = getPaddingLeft();
int paddingTop = getPaddingTop();
int paddingRight = getPaddingRight();
int paddingBottom = getPaddingBottom();
final int scrollX = getScrollX();
int decorCount = 0;
for (int i = 0; i < count; i++) {
final View child = getChildAt(i);
if (child.getVisibility() != GONE) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
ItemInfo ii;
int childLeft = 0;
int childTop = 0;
if (lp.isDecor) {
final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
switch (hgrav) {
default:
childLeft = paddingLeft;
break;
case Gravity.LEFT:
childLeft = paddingLeft;
paddingLeft += child.getMeasuredWidth();
break;
case Gravity.CENTER_HORIZONTAL:
childLeft = Math.max((width - child.getMeasuredWidth()) / 2,
paddingLeft);
break;
case Gravity.RIGHT:
childLeft = width - paddingRight - child.getMeasuredWidth();
paddingRight += child.getMeasuredWidth();
break;
}
switch (vgrav) {
default:
childTop = paddingTop;
break;
case Gravity.TOP:
childTop = paddingTop;
paddingTop += child.getMeasuredHeight();
break;
case Gravity.CENTER_VERTICAL:
childTop = Math.max((height - child.getMeasuredHeight()) / 2,
paddingTop);
break;
case Gravity.BOTTOM:
childTop = height - paddingBottom - child.getMeasuredHeight();
paddingBottom += child.getMeasuredHeight();
break;
}
childLeft += scrollX;
decorCount++;
child.layout(childLeft, childTop,
childLeft + child.getMeasuredWidth(),
childTop + child.getMeasuredHeight());
} else if ((ii = infoForChild(child)) != null) {
int loff = (width + mPageMargin) * ii.position;
childLeft = paddingLeft + loff;
childTop = paddingTop;
if (DEBUG) Log.v(TAG, "Positioning #" + i + " " + child + " f=" + ii.object
+ ":" + childLeft + "," + childTop + " " + child.getMeasuredWidth()
+ "x" + child.getMeasuredHeight());
child.layout(childLeft, childTop,
childLeft + child.getMeasuredWidth(),
childTop + child.getMeasuredHeight());
}
}
}
mTopPageBounds = paddingTop;
mBottomPageBounds = height - paddingBottom;
mDecorChildCount = decorCount;
mFirstLayout = false;
}
@Override
public void computeScroll() {
if (DEBUG) Log.i(TAG, "computeScroll: finished=" + mScroller.isFinished());
if (!mScroller.isFinished()) {
if (mScroller.computeScrollOffset()) {
if (DEBUG) Log.i(TAG, "computeScroll: still scrolling");
int oldX = getScrollX();
int oldY = getScrollY();
int x = mScroller.getCurrX();
int y = mScroller.getCurrY();
if (oldX != x || oldY != y) {
scrollTo(x, y);
pageScrolled(x);
}
// Keep on drawing until the animation has finished.
invalidate();
return;
}
}
// Done with scroll, clean up state.
completeScroll();
}
private void pageScrolled(int xpos) {
final int widthWithMargin = getWidth() + mPageMargin;
final int position = xpos / widthWithMargin;
final int offsetPixels = xpos % widthWithMargin;
final float offset = (float) offsetPixels / widthWithMargin;
mCalledSuper = false;
onPageScrolled(position, offset, offsetPixels);
if (!mCalledSuper) {
throw new IllegalStateException(
"onPageScrolled did not call superclass implementation");
}
}
/**
* This method will be invoked when the current page is scrolled, either as part
* of a programmatically initiated smooth scroll or a user initiated touch scroll.
* If you override this method you must call through to the superclass implementation
* (e.g. super.onPageScrolled(position, offset, offsetPixels)) before onPageScrolled
* returns.
*
* @param position Position index of the first page currently being displayed.
* Page position+1 will be visible if positionOffset is nonzero.
* @param offset Value from [0, 1) indicating the offset from the page at position.
* @param offsetPixels Value in pixels indicating the offset from position.
*/
protected void onPageScrolled(int position, float offset, int offsetPixels) {
// Offset any decor views if needed - keep them on-screen at all times.
if (mDecorChildCount > 0) {
final int scrollX = getScrollX();
int paddingLeft = getPaddingLeft();
int paddingRight = getPaddingRight();
final int width = getWidth();
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (!lp.isDecor) continue;
final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
int childLeft = 0;
switch (hgrav) {
default:
childLeft = paddingLeft;
break;
case Gravity.LEFT:
childLeft = paddingLeft;
paddingLeft += child.getWidth();
break;
case Gravity.CENTER_HORIZONTAL:
childLeft = Math.max((width - child.getMeasuredWidth()) / 2,
paddingLeft);
break;
case Gravity.RIGHT:
childLeft = width - paddingRight - child.getMeasuredWidth();
paddingRight += child.getMeasuredWidth();
break;
}
childLeft += scrollX;
final int childOffset = childLeft - child.getLeft();
if (childOffset != 0) {
child.offsetLeftAndRight(childOffset);
}
}
}
if (mOnPageChangeListener != null) {
mOnPageChangeListener.onPageScrolled(position, offset, offsetPixels);
}
if (mInternalPageChangeListener != null) {
mInternalPageChangeListener.onPageScrolled(position, offset, offsetPixels);
}
mCalledSuper = true;
}
private void completeScroll() {
boolean needPopulate = mScrolling;
if (needPopulate) {
// Done with scroll, no longer want to cache view drawing.
setScrollingCacheEnabled(false);
mScroller.abortAnimation();
int oldX = getScrollX();
int oldY = getScrollY();
int x = mScroller.getCurrX();
int y = mScroller.getCurrY();
if (oldX != x || oldY != y) {
scrollTo(x, y);
}
setScrollState(SCROLL_STATE_IDLE);
}
mPopulatePending = false;
mScrolling = false;
for (int i=0; i<mItems.size(); i++) {
ItemInfo ii = mItems.get(i);
if (ii.scrolling) {
needPopulate = true;
ii.scrolling = false;
}
}
if (needPopulate) {
populate();
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
/*
* This method JUST determines whether we want to intercept the motion.
* If we return true, onMotionEvent will be called and we do the actual
* scrolling there.
*/
final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;
// Always take care of the touch gesture being complete.
if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
// Release the drag.
if (DEBUG) Log.v(TAG, "Intercept done!");
mIsBeingDragged = false;
mIsUnableToDrag = false;
mActivePointerId = INVALID_POINTER;
if (mVelocityTracker != null) {
mVelocityTracker.recycle();
mVelocityTracker = null;
}
return false;
}
// Nothing more to do here if we have decided whether or not we
// are dragging.
if (action != MotionEvent.ACTION_DOWN) {
if (mIsBeingDragged) {
if (DEBUG) Log.v(TAG, "Intercept returning true!");
return true;
}
if (mIsUnableToDrag) {
if (DEBUG) Log.v(TAG, "Intercept returning false!");
return false;
}
}
switch (action) {
case MotionEvent.ACTION_MOVE: {
/*
* mIsBeingDragged == false, otherwise the shortcut would have caught it. Check
* whether the user has moved far enough from his original down touch.
*/
/*
* Locally do absolute value. mLastMotionY is set to the y value
* of the down event.
*/
final int activePointerId = mActivePointerId;
if (activePointerId == INVALID_POINTER) {
// If we don't have a valid id, the touch down wasn't on content.
break;
}
final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
final float x = MotionEventCompat.getX(ev, pointerIndex);
final float dx = x - mLastMotionX;
final float xDiff = Math.abs(dx);
final float y = MotionEventCompat.getY(ev, pointerIndex);
final float yDiff = Math.abs(y - mLastMotionY);
if (DEBUG) Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);
if (canScroll(this, false, (int) dx, (int) x, (int) y)) {
// Nested view has scrollable area under this point. Let it be handled there.
mInitialMotionX = mLastMotionX = x;
mLastMotionY = y;
return false;
}
if (xDiff > mTouchSlop && xDiff > yDiff) {
if (DEBUG) Log.v(TAG, "Starting drag!");
mIsBeingDragged = true;
setScrollState(SCROLL_STATE_DRAGGING);
mLastMotionX = x;
setScrollingCacheEnabled(true);
} else {
if (yDiff > mTouchSlop) {
// The finger has moved enough in the vertical
// direction to be counted as a drag... abort
// any attempt to drag horizontally, to work correctly
// with children that have scrolling containers.
if (DEBUG) Log.v(TAG, "Starting unable to drag!");
mIsUnableToDrag = true;
}
}
break;
}
case MotionEvent.ACTION_DOWN: {
/*
* Remember location of down touch.
* ACTION_DOWN always refers to pointer index 0.
*/
mLastMotionX = mInitialMotionX = ev.getX();
mLastMotionY = ev.getY();
mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
if (mScrollState == SCROLL_STATE_SETTLING) {
// Let the user 'catch' the pager as it animates.
mIsBeingDragged = true;
mIsUnableToDrag = false;
setScrollState(SCROLL_STATE_DRAGGING);
} else {
completeScroll();
mIsBeingDragged = false;
mIsUnableToDrag = false;
}
if (DEBUG) Log.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY
+ " mIsBeingDragged=" + mIsBeingDragged
+ "mIsUnableToDrag=" + mIsUnableToDrag);
break;
}
case MotionEventCompat.ACTION_POINTER_UP:
onSecondaryPointerUp(ev);
break;
}
if (!mIsBeingDragged) {
// Track the velocity as long as we aren't dragging.
// Once we start a real drag we will track in onTouchEvent.
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
}
/*
* The only time we want to intercept motion events is if we are in the
* drag mode.
*/
return mIsBeingDragged;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (mFakeDragging) {
// A fake drag is in progress already, ignore this real one
// but still eat the touch events.
// (It is likely that the user is multi-touching the screen.)
return true;
}
if (ev.getAction() == MotionEvent.ACTION_DOWN && ev.getEdgeFlags() != 0) {
// Don't handle edge touches immediately -- they may actually belong to one of our
// descendants.
return false;
}
if (mAdapter == null || mAdapter.getCount() == 0) {
// Nothing to present or scroll; nothing to touch.
return false;
}
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(ev);
final int action = ev.getAction();
boolean needsInvalidate = false;
switch (action & MotionEventCompat.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: {
/*
* If being flinged and user touches, stop the fling. isFinished
* will be false if being flinged.
*/
completeScroll();
// Remember where the motion event started
mLastMotionX = mInitialMotionX = ev.getX();
mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
break;
}
case MotionEvent.ACTION_MOVE:
if (!mIsBeingDragged) {
final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
final float x = MotionEventCompat.getX(ev, pointerIndex);
final float xDiff = Math.abs(x - mLastMotionX);
final float y = MotionEventCompat.getY(ev, pointerIndex);
final float yDiff = Math.abs(y - mLastMotionY);
if (DEBUG) Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);
if (xDiff > mTouchSlop && xDiff > yDiff) {
if (DEBUG) Log.v(TAG, "Starting drag!");
mIsBeingDragged = true;
mLastMotionX = x;
setScrollState(SCROLL_STATE_DRAGGING);
setScrollingCacheEnabled(true);
}
}
if (mIsBeingDragged) {
// Scroll to follow the motion event
final int activePointerIndex = MotionEventCompat.findPointerIndex(
ev, mActivePointerId);
final float x = MotionEventCompat.getX(ev, activePointerIndex);
final float deltaX = mLastMotionX - x;
mLastMotionX = x;
float oldScrollX = getScrollX();
float scrollX = oldScrollX + deltaX;
final int width = getWidth();
final int widthWithMargin = width + mPageMargin;
final int lastItemIndex = mAdapter.getCount() - 1;
final float leftBound = Math.max(0, (mCurItem - 1) * widthWithMargin);
final float rightBound =
Math.min(mCurItem + 1, lastItemIndex) * widthWithMargin;
if (scrollX < leftBound) {
if (leftBound == 0) {
float over = -scrollX;
needsInvalidate = mLeftEdge.onPull(over / width);
}
scrollX = leftBound;
} else if (scrollX > rightBound) {
if (rightBound == lastItemIndex * widthWithMargin) {
float over = scrollX - rightBound;
needsInvalidate = mRightEdge.onPull(over / width);
}
scrollX = rightBound;
}
// Don't lose the rounded component
mLastMotionX += scrollX - (int) scrollX;
scrollTo((int) scrollX, getScrollY());
pageScrolled((int) scrollX);
}
break;
case MotionEvent.ACTION_UP:
if (mIsBeingDragged) {
final VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(
velocityTracker, mActivePointerId);
mPopulatePending = true;
final int widthWithMargin = getWidth() + mPageMargin;
final int scrollX = getScrollX();
final int currentPage = scrollX / widthWithMargin;
final float pageOffset = (float) (scrollX % widthWithMargin) / widthWithMargin;
final int activePointerIndex =
MotionEventCompat.findPointerIndex(ev, mActivePointerId);
final float x = MotionEventCompat.getX(ev, activePointerIndex);
final int totalDelta = (int) (x - mInitialMotionX);
int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity,
totalDelta);
setCurrentItemInternal(nextPage, true, true, initialVelocity);
mActivePointerId = INVALID_POINTER;
endDrag();
needsInvalidate = mLeftEdge.onRelease() | mRightEdge.onRelease();
}
break;
case MotionEvent.ACTION_CANCEL:
if (mIsBeingDragged) {
setCurrentItemInternal(mCurItem, true, true);
mActivePointerId = INVALID_POINTER;
endDrag();
needsInvalidate = mLeftEdge.onRelease() | mRightEdge.onRelease();
}
break;
case MotionEventCompat.ACTION_POINTER_DOWN: {
final int index = MotionEventCompat.getActionIndex(ev);
final float x = MotionEventCompat.getX(ev, index);
mLastMotionX = x;
mActivePointerId = MotionEventCompat.getPointerId(ev, index);
break;
}
case MotionEventCompat.ACTION_POINTER_UP:
onSecondaryPointerUp(ev);
mLastMotionX = MotionEventCompat.getX(ev,
MotionEventCompat.findPointerIndex(ev, mActivePointerId));
break;
}
if (needsInvalidate) {
invalidate();
}
return true;
}
private int determineTargetPage(int currentPage, float pageOffset, int velocity, int deltaX) {
int targetPage;
if (Math.abs(deltaX) > mFlingDistance && Math.abs(velocity) > mMinimumVelocity) {
targetPage = velocity > 0 ? currentPage : currentPage + 1;
} else {
targetPage = (int) (currentPage + pageOffset + 0.5f);
}
return targetPage;
}
@Override
public void draw(Canvas canvas) {
super.draw(canvas);
boolean needsInvalidate = false;
final int overScrollMode = ViewCompat.getOverScrollMode(this);
if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS ||
(overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS &&
mAdapter != null && mAdapter.getCount() > 1)) {
if (!mLeftEdge.isFinished()) {
final int restoreCount = canvas.save();
final int height = getHeight() - getPaddingTop() - getPaddingBottom();
canvas.rotate(270);
canvas.translate(-height + getPaddingTop(), 0);
mLeftEdge.setSize(height, getWidth());
needsInvalidate |= mLeftEdge.draw(canvas);
canvas.restoreToCount(restoreCount);
}
if (!mRightEdge.isFinished()) {
final int restoreCount = canvas.save();
final int width = getWidth();
final int height = getHeight() - getPaddingTop() - getPaddingBottom();
final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;
canvas.rotate(90);
canvas.translate(-getPaddingTop(),
-itemCount * (width + mPageMargin) + mPageMargin);
mRightEdge.setSize(height, width);
needsInvalidate |= mRightEdge.draw(canvas);
canvas.restoreToCount(restoreCount);
}
} else {
mLeftEdge.finish();
mRightEdge.finish();
}
if (needsInvalidate) {
// Keep animating
invalidate();
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Draw the margin drawable if needed.
if (mPageMargin > 0 && mMarginDrawable != null) {
final int scrollX = getScrollX();
final int width = getWidth();
final int offset = scrollX % (width + mPageMargin);
if (offset != 0) {
// Pages fit completely when settled; we only need to draw when in between
final int left = scrollX - offset + width;
mMarginDrawable.setBounds(left, mTopPageBounds, left + mPageMargin,
mBottomPageBounds);
mMarginDrawable.draw(canvas);
}
}
}
/**
* Start a fake drag of the pager.
*
* <p>A fake drag can be useful if you want to synchronize the motion of the ViewPager
* with the touch scrolling of another view, while still letting the ViewPager
* control the snapping motion and fling behavior. (e.g. parallax-scrolling tabs.)
* Call {@link #fakeDragBy(float)} to simulate the actual drag motion. Call
* {@link #endFakeDrag()} to complete the fake drag and fling as necessary.
*
* <p>During a fake drag the ViewPager will ignore all touch events. If a real drag
* is already in progress, this method will return false.
*
* @return true if the fake drag began successfully, false if it could not be started.
*
* @see #fakeDragBy(float)
* @see #endFakeDrag()
*/
public boolean beginFakeDrag() {
if (mIsBeingDragged) {
return false;
}
mFakeDragging = true;
setScrollState(SCROLL_STATE_DRAGGING);
mInitialMotionX = mLastMotionX = 0;
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
} else {
mVelocityTracker.clear();
}
final long time = SystemClock.uptimeMillis();
final MotionEvent ev = MotionEvent.obtain(time, time, MotionEvent.ACTION_DOWN, 0, 0, 0);
mVelocityTracker.addMovement(ev);
ev.recycle();
mFakeDragBeginTime = time;
return true;
}
/**
* End a fake drag of the pager.
*
* @see #beginFakeDrag()
* @see #fakeDragBy(float)
*/
public void endFakeDrag() {
if (!mFakeDragging) {
throw new IllegalStateException("No fake drag in progress. Call beginFakeDrag first.");
}
final VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
int initialVelocity = (int)VelocityTrackerCompat.getYVelocity(
velocityTracker, mActivePointerId);
mPopulatePending = true;
final int totalDelta = (int) (mLastMotionX - mInitialMotionX);
final int scrollX = getScrollX();
final int widthWithMargin = getWidth() + mPageMargin;
final int currentPage = scrollX / widthWithMargin;
final float pageOffset = (float) (scrollX % widthWithMargin) / widthWithMargin;
int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity, totalDelta);
setCurrentItemInternal(nextPage, true, true, initialVelocity);
endDrag();
mFakeDragging = false;
}
/**
* Fake drag by an offset in pixels. You must have called {@link #beginFakeDrag()} first.
*
* @param xOffset Offset in pixels to drag by.
* @see #beginFakeDrag()
* @see #endFakeDrag()
*/
public void fakeDragBy(float xOffset) {
if (!mFakeDragging) {
throw new IllegalStateException("No fake drag in progress. Call beginFakeDrag first.");
}
mLastMotionX += xOffset;
float scrollX = getScrollX() - xOffset;
final int width = getWidth();
final int widthWithMargin = width + mPageMargin;
final float leftBound = Math.max(0, (mCurItem - 1) * widthWithMargin);
final float rightBound =
Math.min(mCurItem + 1, mAdapter.getCount() - 1) * widthWithMargin;
if (scrollX < leftBound) {
scrollX = leftBound;
} else if (scrollX > rightBound) {
scrollX = rightBound;
}
// Don't lose the rounded component
mLastMotionX += scrollX - (int) scrollX;
scrollTo((int) scrollX, getScrollY());
pageScrolled((int) scrollX);
// Synthesize an event for the VelocityTracker.
final long time = SystemClock.uptimeMillis();
final MotionEvent ev = MotionEvent.obtain(mFakeDragBeginTime, time, MotionEvent.ACTION_MOVE,
mLastMotionX, 0, 0);
mVelocityTracker.addMovement(ev);
ev.recycle();
}
/**
* Returns true if a fake drag is in progress.
*
* @return true if currently in a fake drag, false otherwise.
*
* @see #beginFakeDrag()
* @see #fakeDragBy(float)
* @see #endFakeDrag()
*/
public boolean isFakeDragging() {
return mFakeDragging;
}
private void onSecondaryPointerUp(MotionEvent ev) {
final int pointerIndex = MotionEventCompat.getActionIndex(ev);
final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex);
if (pointerId == mActivePointerId) {
// This was our active pointer going up. Choose a new
// active pointer and adjust accordingly.
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
mLastMotionX = MotionEventCompat.getX(ev, newPointerIndex);
mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex);
if (mVelocityTracker != null) {
mVelocityTracker.clear();
}
}
}
private void endDrag() {
mIsBeingDragged = false;
mIsUnableToDrag = false;
if (mVelocityTracker != null) {
mVelocityTracker.recycle();
mVelocityTracker = null;
}
}
private void setScrollingCacheEnabled(boolean enabled) {
if (mScrollingCacheEnabled != enabled) {
mScrollingCacheEnabled = enabled;
if (USE_CACHE) {
final int size = getChildCount();
for (int i = 0; i < size; ++i) {
final View child = getChildAt(i);
if (child.getVisibility() != GONE) {
child.setDrawingCacheEnabled(enabled);
}
}
}
}
}
/**
* Tests scrollability within child views of v given a delta of dx.
*
* @param v View to test for horizontal scrollability
* @param checkV Whether the view v passed should itself be checked for scrollability (true),
* or just its children (false).
* @param dx Delta scrolled in pixels
* @param x X coordinate of the active touch point
* @param y Y coordinate of the active touch point
* @return true if child views of v can be scrolled by delta of dx.
*/
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
if (v instanceof ViewGroup) {
final ViewGroup group = (ViewGroup) v;
final int scrollX = v.getScrollX();
final int scrollY = v.getScrollY();
final int count = group.getChildCount();
// Count backwards - let topmost views consume scroll distance first.
for (int i = count - 1; i >= 0; i--) {
// TODO: Add versioned support here for transformed views.
// This will not work for transformed views in Honeycomb+
final View child = group.getChildAt(i);
if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight() &&
y + scrollY >= child.getTop() && y + scrollY < child.getBottom() &&
canScroll(child, true, dx, x + scrollX - child.getLeft(),
y + scrollY - child.getTop())) {
return true;
}
}
}
return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
// Let the focused view and/or our descendants get the key first
return super.dispatchKeyEvent(event) || executeKeyEvent(event);
}
/**
* You can call this function yourself to have the scroll view perform
* scrolling from a key event, just as if the event had been dispatched to
* it by the view hierarchy.
*
* @param event The key event to execute.
* @return Return true if the event was handled, else false.
*/
public boolean executeKeyEvent(KeyEvent event) {
boolean handled = false;
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (event.getKeyCode()) {
case KeyEvent.KEYCODE_DPAD_LEFT:
handled = arrowScroll(FOCUS_LEFT);
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
handled = arrowScroll(FOCUS_RIGHT);
break;
case KeyEvent.KEYCODE_TAB:
if (Build.VERSION.SDK_INT >= 11) {
// The focus finder had a bug handling FOCUS_FORWARD and FOCUS_BACKWARD
// before Android 3.0. Ignore the tab key on those devices.
if (KeyEventCompat.hasNoModifiers(event)) {
handled = arrowScroll(FOCUS_FORWARD);
} else if (KeyEventCompat.hasModifiers(event, KeyEvent.META_SHIFT_ON)) {
handled = arrowScroll(FOCUS_BACKWARD);
}
}
break;
}
}
return handled;
}
public boolean arrowScroll(int direction) {
View currentFocused = findFocus();
if (currentFocused == this) currentFocused = null;
boolean handled = false;
View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused,
direction);
if (nextFocused != null && nextFocused != currentFocused) {
if (direction == View.FOCUS_LEFT) {
// If there is nothing to the left, or this is causing us to
// jump to the right, then what we really want to do is page left.
if (currentFocused != null && nextFocused.getLeft() >= currentFocused.getLeft()) {
handled = pageLeft();
} else {
handled = nextFocused.requestFocus();
}
} else if (direction == View.FOCUS_RIGHT) {
// If there is nothing to the right, or this is causing us to
// jump to the left, then what we really want to do is page right.
if (currentFocused != null && nextFocused.getLeft() <= currentFocused.getLeft()) {
handled = pageRight();
} else {
handled = nextFocused.requestFocus();
}
}
} else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
// Trying to move left and nothing there; try to page.
handled = pageLeft();
} else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
// Trying to move right and nothing there; try to page.
handled = pageRight();
}
if (handled) {
playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
}
return handled;
}
boolean pageLeft() {
if (mCurItem > 0) {
setCurrentItem(mCurItem-1, true);
return true;
}
return false;
}
boolean pageRight() {
if (mAdapter != null && mCurItem < (mAdapter.getCount()-1)) {
setCurrentItem(mCurItem+1, true);
return true;
}
return false;
}
/**
* We only want the current page that is being shown to be focusable.
*/
@Override
public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
final int focusableCount = views.size();
final int descendantFocusability = getDescendantFocusability();
if (descendantFocusability != FOCUS_BLOCK_DESCENDANTS) {
for (int i = 0; i < getChildCount(); i++) {
final View child = getChildAt(i);
if (child.getVisibility() == VISIBLE) {
ItemInfo ii = infoForChild(child);
if (ii != null && ii.position == mCurItem) {
child.addFocusables(views, direction, focusableMode);
}
}
}
}
// we add ourselves (if focusable) in all cases except for when we are
// FOCUS_AFTER_DESCENDANTS and there are some descendants focusable. this is
// to avoid the focus search finding layouts when a more precise search
// among the focusable children would be more interesting.
if (
descendantFocusability != FOCUS_AFTER_DESCENDANTS ||
// No focusable descendants
(focusableCount == views.size())) {
// Note that we can't call the superclass here, because it will
// add all views in. So we need to do the same thing View does.
if (!isFocusable()) {
return;
}
if ((focusableMode & FOCUSABLES_TOUCH_MODE) == FOCUSABLES_TOUCH_MODE &&
isInTouchMode() && !isFocusableInTouchMode()) {
return;
}
if (views != null) {
views.add(this);
}
}
}
/**
* We only want the current page that is being shown to be touchable.
*/
@Override
public void addTouchables(ArrayList<View> views) {
// Note that we don't call super.addTouchables(), which means that
// we don't call View.addTouchables(). This is okay because a ViewPager
// is itself not touchable.
for (int i = 0; i < getChildCount(); i++) {
final View child = getChildAt(i);
if (child.getVisibility() == VISIBLE) {
ItemInfo ii = infoForChild(child);
if (ii != null && ii.position == mCurItem) {
child.addTouchables(views);
}
}
}
}
/**
* We only want the current page that is being shown to be focusable.
*/
@Override
protected boolean onRequestFocusInDescendants(int direction,
Rect previouslyFocusedRect) {
int index;
int increment;
int end;
int count = getChildCount();
if ((direction & FOCUS_FORWARD) != 0) {
index = 0;
increment = 1;
end = count;
} else {
index = count - 1;
increment = -1;
end = -1;
}
for (int i = index; i != end; i += increment) {
View child = getChildAt(i);
if (child.getVisibility() == VISIBLE) {
ItemInfo ii = infoForChild(child);
if (ii != null && ii.position == mCurItem) {
if (child.requestFocus(direction, previouslyFocusedRect)) {
return true;
}
}
}
}
return false;
}
@Override
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
// ViewPagers should only report accessibility info for the current page,
// otherwise things get very confusing.
// TODO: Should this note something about the paging container?
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
if (child.getVisibility() == VISIBLE) {
final ItemInfo ii = infoForChild(child);
if (ii != null && ii.position == mCurItem &&
child.dispatchPopulateAccessibilityEvent(event)) {
return true;
}
}
}
return false;
}
@Override
protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
return new LayoutParams();
}
@Override
protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
return generateDefaultLayoutParams();
}
@Override
protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
return p instanceof LayoutParams && super.checkLayoutParams(p);
}
@Override
public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
return new LayoutParams(getContext(), attrs);
}
private class PagerObserver extends DataSetObserver {
@Override
public void onChanged() {
dataSetChanged();
}
@Override
public void onInvalidated() {
dataSetChanged();
}
}
/**
* Layout parameters that should be supplied for views added to a
* ViewPager.
*/
public static class LayoutParams extends ViewGroup.LayoutParams {
/**
* true if this view is a decoration on the pager itself and not
* a view supplied by the adapter.
*/
public boolean isDecor;
/**
* Where to position the view page within the overall ViewPager
* container; constants are defined in {@link android.view.Gravity}.
*/
public int gravity;
public LayoutParams() {
super(FILL_PARENT, FILL_PARENT);
}
public LayoutParams(Context context, AttributeSet attrs) {
super(context, attrs);
final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
gravity = a.getInteger(0, Gravity.NO_GRAVITY);
a.recycle();
}
}
}
imageVideoBanner/src/main/res/layout/activity_main.xml
View file @ aecd4fe7
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout <androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_height="match_parent"> android:layout_height="match_parent">
<com.widget.imagevideobanner.banner.ImageVideoBanner <com.widget.imagebanner.ImageVideoBanner
android:id="@+id/banner" android:id="@+id/banner"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="0dp" android:layout_height="0dp"
...@@ -15,4 +15,4 @@ ...@@ -15,4 +15,4 @@
app:period="5000" /> app:period="5000" />
</android.support.constraint.ConstraintLayout> </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file \ No newline at end of file
settings.gradle
View file @ aecd4fe7
include ':banner'
include ':imageVideoBanner' include ':imageVideoBanner'
\ No newline at end of file
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