Android中的多個偵聽器

Question

如何設置按鈕以偵聽長按事件，其中按鈕位於已使用手勢檢測器偵聽onFling事件的視圖上？

我已經添加了參考代碼。請解釋我如何在一個活動中實現多個監聽器。另外，多個監聽器可以爲單個視圖實現嗎？其中之一是一個長按聽衆，而另一個是onfling聽衆

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.knowledge); 

    summary =(TextView)findViewById(R.id.textSummary); 
    buckview = (View) findViewById(R.id.bucketView); 
    ball = (View)findViewById(R.id.meatBall); 
    gestureDetector = new GestureDetector(new MyGestureDetector()); 
    View mainview = (View) findViewById(R.id.mainView); 

    /* 
    //Set touch release listener for bucket view 
    mainview.setOnTouchListener(new View.OnTouchListener() { 

     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      // TODO Auto-generated method stub 
      if (event.getAction() == MotionEvent.ACTION_UP) 
      { 
       buckview.setVisibility(RelativeLayout.GONE); 
      } 
      return false; 
     } 
    }); 
    */ 


    // Set the touch listener for the main view to be our custom gesture listener 
    mainview.setOnTouchListener(new View.OnTouchListener() { 
     public boolean onTouch(View v, MotionEvent event) { 
      if (gestureDetector.onTouchEvent(event)) { 
       return true; 
      } 
      return false; 
     } 

    }); 
    ball.setOnLongClickListener(new View.OnLongClickListener() { 

     @Override 
     public boolean onLongClick(View v) { 
      // TODO Auto-generated method stub 
      buckview.setVisibility(ImageView.VISIBLE); 
      return false; 
     } 
    }); 
    ball.setOnTouchListener(new View.OnTouchListener() { 

     @Override 
     public boolean onTouch(View v, MotionEvent event) { 
      // TODO Auto-generated method stub 
      if(event.getAction()==MotionEvent.ACTION_UP) 
      { 
       buckview.setVisibility(ImageView.GONE); 
       return false; 
      } 
      else 
      return true; 
     } 
    }); 
} 

class MyGestureDetector extends SimpleOnGestureListener { 

    public void onShowPress(MotionEvent event){ 

    } 
    @Override 
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 
    Intent intent = new Intent(Knowledge.this.getBaseContext(), Knowledge.class); 

     /* If only horizontal allowed 
     if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) { 
      return false; 
     } 
     */ 
     // right to left swipe 
     if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { 
     startActivity(intent); 
     Knowledge.this.overridePendingTransition(
     R.anim.slide_in_right, 
     R.anim.slide_out_left 
     ); 
     return false;// left to right swipe 
     } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { 
     startActivity(intent); 
     Knowledge.this.overridePendingTransition(
     R.anim.slide_in_left, 
     R.anim.slide_out_right 
     ); 
     return false;// top to bottom swipe 
     } else if(e1.getY() - e2.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) { 
     startActivity(intent); 
     Knowledge.this.overridePendingTransition(
     R.anim.slide_in_top, 
     R.anim.slide_out_bottom 
     ); 
     return false;// bottom to top swipe 
     } else if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) { 
     startActivity(intent); 
     Knowledge.this.overridePendingTransition(
     R.anim.slide_in_bottom, 
     R.anim.slide_out_top 
     ); 
     return false; 
     }else 
     return true; 
    } 

    // It is necessary to return true from onDown for the onFling event to register 
    @Override 
    public boolean onDown(MotionEvent event) { 
      return true; 
    } 


} 


} 

Answer 1

只是一味

button.setOnLongClickListener(new OnLongClickListener() { 

    public boolean onLongClick(View arg0) { 
     // TODO Auto-generated method stub 
     return false; 
    } 
}) 

這將很好地工作，直到你從onLongClick返回true。如果您從這裏返回ture，則只會調用setOnLongClickListener。如果您返回false所有Listener s屬於此button將被調用。在你的情況下，無論你製作setOnLongClickListener還是setOnTouchListener，都會調用Listenser。

我希望這會幫助你。