在Android中雙擊事件

Question

如何在android中不使用gesturedetector實現雙擊事件？

Answer 1

如果你的意思是雙擊，你必須使用GestureDetector.OnDoubleTapListener位。

Answer 2

看看在GestureDetector的源代碼，並複製你需要（具體看isConsideredDoubleTap法）

https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/view/GestureDetector.java

Answer 3

我確定那裏的所有代碼都是確定第二次點擊是否在第一次點擊的特定時間內，否則將其視爲第二次點擊。無論如何，我都會這麼做。

Answer 4

只是使用setOnTouchListener記錄第一次和第二次點擊時間。如果他們非常接近，請將其確定爲雙擊。與此類似，

public class MyActivity extends Activity { 

    private final String DEBUG_TAG= "MyActivity"; 
    private long firstClick; 
    private long lastClick; 
    private int count; // to count click times 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     Button mButton= (Button)findViewById(R.id.my_button); 
     mButton.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       switch (motionEvent.getAction()) { 
        case MotionEvent.ACTION_DOWN: 
         // if the second happens too late, regard it as first click 
         if (firstClick != 0 && System.currentTimeMillis() - firstClick > 300) { 
          count = 0; 
         } 
         count++; 
         if (count == 1) { 
          firstClick = System.currentTimeMillis(); 
         } else if (count == 2) { 
          lastClick = System.currentTimeMillis(); 
          // if these two clicks is closer than 300 millis second 
          if (lastClick - firstClick < 300) { 
           Log.d(DEBUG_TAG,"a double click happened"); 
          } 
         } 
         break; 
        case MotionEvent.ACTION_MOVE: 
         break; 
        case MotionEvent.ACTION_UP: 
         break; 
       } 
       return true; 
      } 
     }); 
    } 
} 

Answer 5

看這裏，這是圖書館在罐子裏聽觸摸手勢，實施和工作） https://github.com/NikolayKolomiytsev/zTouch