添加觸摸偵聽器，用於填充按鈕的線條佈局

Question

我向線性佈局添加了觸摸事件以響應滑動手勢，並且效果很好。但是，當我將按鈕添加到佈局時，父級班輪佈局被忽略。我應該如何防止這種情況發生？

LinearLayout ln2 = (LinearLayout) findViewById(R.id.fr2); 
ln2.setOnTouchListener(swipe); 

如何使用onInterceptTouch？

Answer 1

您應該創建自己的佈局並覆蓋佈局的onInterceptTouchEvent（MotionEvent ev）方法。

例如，我創建了自己的佈局延伸的RelativeLayout

 @Override 
     public boolean onInterceptTouchEvent(MotionEvent ev) { 
     return true; // With this i tell my layout to consume all the touch events from its childs 
     } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     switch (event.getAction()) { 
     case MotionEvent.ACTION_DOWN: 
     // Log.d(TAG, String.format("ACTION_DOWN | x:%s y:%s", 
      break; 
     case MotionEvent.ACTION_MOVE: 
     //Log.d(TAG, String.format("ACTION_MOVE | x:%s y:%s", 
      break; 
     case MotionEvent.ACTION_UP: 
      break; 
     } 
     return true; 
    } 

當我把一個按鈕，我的佈局，即使我點擊該按鈕，我的佈局佔用了所有的TouchEvent因爲onInterceptTouchEvent總是返回true 。

希望這可以幫助你

Answer 2

添加機器人：的onClick =「tapEvent」在您的佈局要採取的點擊。 通過更改MAX_TAP_COUNT值，您可以使用任意數量的水龍頭。

private long thisTime = 0; 
private long prevTime = 0; 
private int tapCount = 0; 
private static final int MAX_TAP_COUNT = 5; 
protected static final long DOUBLE_CLICK_MAX_DELAY = 500; 


public void tapEvent(View v){ 

     if (SystemClock.uptimeMillis() > thisTime) { 
      if ((SystemClock.uptimeMillis() - thisTime) > DOUBLE_CLICK_MAX_DELAY * MAX_TAP_COUNT) { 
       Log.d(TAG, "touch event " + "resetting tapCount = 0"); 
       tapCount = 0; 
      } 
      if (tapCount()) { 
       //DO YOUR LOGIC HERE 
      } 
     } 

} 

private Boolean tapCount(){ 

     if (tapCount == 0) { 
      thisTime = SystemClock.uptimeMillis(); 
      tapCount++; 
     } else if (tapCount < (MAX_TAP_COUNT-1)) { 
      tapCount++; 
     } else { 
      prevTime = thisTime; 
      thisTime = SystemClock.uptimeMillis(); 

      //just incase system clock reset to zero 
      if (thisTime > prevTime) { 

       //Check if times are within our max delay 
       if ((thisTime - prevTime) <= DOUBLE_CLICK_MAX_DELAY * MAX_TAP_COUNT) { 
        //We have detected a multiple continuous tap! 
        //Once receive multiple tap, reset tap count to zero for consider next tap as new start 
        tapCount = 0; 
        return true; 
       } else { 
        //Otherwise Reset tapCount 
        tapCount = 0; 
       } 
      } else { 
       tapCount = 0; 
      } 
     } 
     return false; 

}