完美解决商米称重问题

app/src/main/java/com/miya/hardware/WeighingActivity.java

@@ -52,6 +52,7 @@ public class WeighingActivity extends Activity implements View.OnClickListener {
         findViewById(R.id.btnGravity).setOnClickListener(this);
         findViewById(R.id.btnRelease).setOnClickListener(this);
         findViewById(R.id.btnReadNow).setOnClickListener(this);
+        findViewById(R.id.ivBack).setOnClickListener(this);
     }
 
     @Override
@@ -107,14 +108,19 @@ public class WeighingActivity extends Activity implements View.OnClickListener {
                 break;
             case R.id.btnRelease:
                 if (WeighingManager.getInstance().isConnected()) {
-                    WeighingManager.getInstance().getWeighing().release();
+                    if (WeighingManager.getInstance().getWeighing().release() == true) {
+                        tvResultNow.setText("断开连接成功!");
+                    }
                 }
                 break;
             case R.id.btnReadNow:
                 if (WeighingManager.getInstance().isConnected()) {
-                    tvResultNow.setText(WeighingManager.getInstance().getWeighing().getWeight()+"");
+                    tvResultNow.setText(WeighingManager.getInstance().getWeighing().getWeight() + "");
                 }
                 break;
+            case R.id.ivBack:
+                finish();
+                break;
         }
         if (WeighingManager.getInstance().isConnected() == false) {
             tvResult.setText("当前没有称重设备，试试初始化!");

app/src/main/res/layout/activity_weighing.xml

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
@@ -9,11 +10,18 @@
         android:layout_height="88dp"
         android:background="@color/colorPrimary">
 
+        <ImageView
+            android:id="@+id/ivBack"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@android:drawable/ic_media_previous" />
+
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_margin="16dp"
-            android:text="称重开放平台"
+            android:gravity="right"
+            android:text="称重开放组件"
             android:textColor="#ffffff"
             android:textSize="36sp" />
     </android.support.v7.widget.ActionMenuView>

weighing/src/main/java/com/miya/weighing/HisenseWeighing.java

@@ -94,12 +94,16 @@ public class HisenseWeighing extends BaseWeighing {
 
     @Override
     public boolean release() {
+        if (context != null && serviceConnection != null) {
             this.context.unbindService(serviceConnection);
+        }
         try {
             uartScale.close();
         } catch (Exception e) {
             e.printStackTrace();
         }
+        context = null;
+        serviceConnection = null;
         curWeight = 0;
         tare = 0;
         weighingCallback = null;

weighing/src/main/java/com/miya/weighing/SunmiWeighing.java

@@ -8,6 +8,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Log;
 
+import com.miya.weighing.utils.D;
 import com.sunmi.electronicscaleservice.ScaleCallback;
 import com.sunmi.electronicscaleservice.ScaleService;
 
@@ -30,6 +31,33 @@ public class SunmiWeighing extends BaseWeighing {
      */
     ScaleService scaleService;
 
+    /**
+     * 称重回调监听
+     */
+    ScaleCallback.Stub stub = new ScaleCallback.Stub() {
+        @Override
+        public void getData(int net, int tare, int status) throws RemoteException {
+            D.i(TAG, "商米称重硬件==>原始重量：" + net + ";皮重：" + tare + ";状态：" + status);
+            if (weighingCallback != null) {
+                String stateStr = Integer.toBinaryString(status);
+                boolean isStable;
+                if (stateStr.substring(stateStr.length() - 1).equals("1")) {
+                    // 稳定
+                    isStable = true;
+                    if (net < 0) {
+                        //程序置零一次,可能会失败
+                        resetZero();
+                    }
+                } else {
+                    // 动态值
+                    isStable = false;
+                }
+                curWeight = net;
+                weighingCallback.returnWeight(net, isStable);
+            }
+        }
+    };
+
     @Override
     public boolean init(Context context) {
         this.context = context;
@@ -65,41 +93,43 @@ public class SunmiWeighing extends BaseWeighing {
             if (scaleService != null) {
                 //设置重量回调
                 try {
-                    scaleService.getData(new ScaleCallback.Stub() {
-                        @Override
-                        public void getData(int net, int tare, int status) throws RemoteException {
-                            Log.i(TAG, "商米称重硬件==>原始重量：" + net + ";皮重：" + tare + ";状态：" + status);
-                            if (weighingCallback != null) {
-                                String stateStr = Integer.toBinaryString(status);
-                                boolean isStable;
-                                if (stateStr.substring(stateStr.length() - 1).equals("1")) {
-                                    // 稳定
-                                    isStable = true;
-                                    if (net < 0) {
-                                        //程序置零一次,可能会失败
-                                        resetZero();
-                                    }
-                                } else {
-                                    // 动态值
-                                    isStable = false;
-                                }
-                                curWeight = net;
-                                weighingCallback.returnWeight(net, isStable);
-                            }
-                        }
-                    });
+                    scaleService.getData(stub);
                 } catch (Exception e) {
                     e.printStackTrace();
-                    Log.i(TAG, "称重服务初始化失败!");
+                    D.i(TAG, "称重服务初始化失败!");
                 }
             } else {
-                Log.i(TAG, "防损称连接失败!");
+                D.i(TAG, "防损称连接失败!");
             }
         }
 
+        @Override
+        public void onBindingDied(ComponentName name) {
+            D.i(TAG, "解绑成功 ComponentName==>" + name);
+        }
+
         @Override
         public void onServiceDisconnected(ComponentName name) {
             scaleService = null;
         }
     };
+
+    @Override
+    public boolean release() {
+        if (context != null && serviceConnection != null) {
+            this.context.unbindService(serviceConnection);
+        }
+        context = null;
+        serviceConnection = null;
+        if (scaleService != null) {
+            try {
+                scaleService.cancelGetData();
+            } catch (RemoteException e) {
+                e.printStackTrace();
+            }
+        }
+        scaleService = null;
+        this.weighingCallback = null;
+        return true;
+    }
 }

weighing/src/main/java/com/miya/weighing/WeighingManager.java

@@ -76,10 +76,6 @@ public class WeighingManager {
      * @return
      */
     public boolean init(@NonNull Context context) {
-        //如果之前初始化过，则避免重复初始化
-        if (weighing != null) {
-            return true;
-        }
         boolean result = false;
         //轮询所有的称重服务,注意是同步方法
         for (Type type : Type.values()) {
@@ -165,16 +161,4 @@ public class WeighingManager {
         }
         return false;
     }
-
-    /**
-     * 断开与称重台的连接
-     *
-     * @return 断开操作的结果
-     */
-    public boolean disConnect() {
-        if (isConnected()) {
-            return weighing.release();
-        }
-        return true;
-    }
 }

weighing/src/main/java/com/miya/weighing/YingtaiWeighing.java

@@ -112,13 +112,17 @@ public class YingtaiWeighing extends BaseWeighing {
 
     @Override
     public void setWeighingCallback(WeighingCallback callback) {
+        if (scl == null) {
+            return;
+        }
         this.weighingCallback = callback;
         if (timer == null) {
             timer = new Timer();
             timer.schedule(new TimerTask() {
                 @Override
                 public void run() {
-                    //不断读取重量数据,每100ms一次
+                    //不断读取重量数据,每10ms一次
+                    try {
                         int ret = scl.read_standard(buf);
                         if (ret == 0) {
                             //读取正常
@@ -147,6 +151,9 @@ public class YingtaiWeighing extends BaseWeighing {
                             //读取异常
                             curWeight = -2;
                         }
+                    } catch (Exception ex) {
+                        ex.printStackTrace();
+                    }
                 }
             }, 0, 10);
         }
@@ -154,9 +161,10 @@ public class YingtaiWeighing extends BaseWeighing {
 
     @Override
     public boolean release() {
-        if (scl != null) {
-            scl.SCL_close();
-        }
+        //调用该方法时会抛native异常，不建议调用
+//        if (scl != null) {
+//            scl.SCL_close();
+//        }
         scl = null;
         buf = null;
         if (timer != null) {