兼容摄像头扫描

utils/scan.js

@@ -7,10 +7,20 @@ export default class scan {
       page[f] = (...args) => {
         if (f === 'onShow') {
           if (!page._keyEventListener) {
+
+            //摄像头
+            my.ix.onCodeScan((r) => {
+              if (r.success){
+                  let cur = getCurrentPages().slice(-1)[0];
+                  cur.onKeyPress.call(cur, code);
+              }
+                console.log('code: ' + r.code);
+            });
+
+            //物理扫码枪
             my.ix.onKeyEventChange(page._keyEventListener = (r) => {
               let cur = getCurrentPages().slice(-1)[0];
               if (cur && cur.onKeyPress) {
-
                 if (isScaning == false) {
                   isScaning = true
                   code = (r.keyCode - 7) + ''
@@ -34,6 +44,8 @@ export default class scan {
           if (page._keyEventListener) {
             my.ix.offKeyEventChange(page._keyEventListener);
             page._keyEventListener = null;
+            //摄像头资源释放
+            my.ix.offCodeScan();
           }
         }
         if (raw instanceof Function) {