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AndroidPhoneWindowManager監(jiān)聽(tīng)屏幕右側(cè)向左滑動(dòng)實(shí)現(xiàn)返回功能的實(shí)現(xiàn)

這篇文章主要講解了Android PhoneWindowManager監(jiān)聽(tīng)屏幕右側(cè)向左滑動(dòng)實(shí)現(xiàn)返回功能的實(shí)現(xiàn),內(nèi)容清晰明了,對(duì)此有興趣的小伙伴可以學(xué)習(xí)一下,相信大家閱讀完之后會(huì)有幫助。

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由于項(xiàng)目沒(méi)有設(shè)計(jì)返回鍵,一旦進(jìn)入別的應(yīng)用,就無(wú)法回到桌面。只能通過(guò)串口輸入input keyevent 4(返回鍵)來(lái)返回桌面,為了方便調(diào)試,在Framework 中監(jiān)聽(tīng)手勢(shì),實(shí)現(xiàn)返回功能。

       在frameworks\base\services\core\java\com\android\server\policy\PhoneWindowManager中有這么一段代碼

mSystemGestures = new SystemGesturesPointerEventListener(context,
        new SystemGesturesPointerEventListener.Callbacks() {
          @Override
          public void onSwipeFromTop() {
   Log.i("gyx","onSwipeFromTop");
            if (mStatusBar != null) {
              requestTransientBars(mStatusBar);
            }
          }
          @Override
          public void onSwipeFromBottom() {
   Log.i("gyx","onSwipeFromBottom");
            if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_BOTTOM) {
              requestTransientBars(mNavigationBar);
            }
          }
          @Override
          public void onSwipeFromRight() {
   Log.i("gyx","onSwipeFromRight");
   sendKeyCode(4);
   Log.i("gyx","sendKeyCode 4");
 
            if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_RIGHT) {
              requestTransientBars(mNavigationBar);
            }
          }
          @Override
          public void onSwipeFromLeft() {
   Log.i("gyx","onSwipeFromLeft");
            if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_LEFT) {
              requestTransientBars(mNavigationBar);
            }
          }
          @Override
          public void onFling(int duration) {
            if (mPowerManagerInternal != null) {
              mPowerManagerInternal.powerHint(
                  PowerHint.INTERACTION, duration);
            }
          }
          @Override
          public void onDebug() {
            // no-op
          }
          @Override
          public void onDown() {
            mOrientationListener.onTouchStart();
          }
          @Override
          public void onUpOrCancel() {
            mOrientationListener.onTouchEnd();
          }
          @Override
          public void onMouseHoverAtTop() {
            mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
            Message msg = mHandler.obtainMessage(MSG_REQUEST_TRANSIENT_BARS);
            msg.arg1 = MSG_REQUEST_TRANSIENT_BARS_ARG_STATUS;
            mHandler.sendMessageDelayed(msg, 500);
          }
          @Override
          public void onMouseHoverAtBottom() {
            mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
            Message msg = mHandler.obtainMessage(MSG_REQUEST_TRANSIENT_BARS);
            msg.arg1 = MSG_REQUEST_TRANSIENT_BARS_ARG_NAVIGATION;
            mHandler.sendMessageDelayed(msg, 500);
          }
          @Override
          public void onMouseLeaveFromEdge() {
            mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
          }
        });

代碼中監(jiān)聽(tīng)了手勢(shì)操作,其中onSwipeFromRight()就是當(dāng)從屏幕的右側(cè)向左滑動(dòng)時(shí)會(huì)觸發(fā),只要在這里加入返回的功能即可;

實(shí)現(xiàn)返回按鍵的功能代碼如下

private void sendKeyCode(final int keyCode) {
    new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          // 創(chuàng)建一個(gè)Instrumentation對(duì)象
          Instrumentation inst = new Instrumentation();
          // 調(diào)用inst對(duì)象的按鍵模擬方法
          inst.sendKeyDownUpSync(keyCode);
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    }).start();
  }

看完上述內(nèi)容,是不是對(duì)Android PhoneWindowManager監(jiān)聽(tīng)屏幕右側(cè)向左滑動(dòng)實(shí)現(xiàn)返回功能的實(shí)現(xiàn)有進(jìn)一步的了解,如果還想學(xué)習(xí)更多內(nèi)容,歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。

當(dāng)前名稱(chēng):AndroidPhoneWindowManager監(jiān)聽(tīng)屏幕右側(cè)向左滑動(dòng)實(shí)現(xiàn)返回功能的實(shí)現(xiàn)
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