如何爲整個屏幕設置OnTouchListener？

Question

請看下面的代碼。我只發佈代碼的重要部分。

activity_game.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/fullView" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".Game" > 

    <TextView 
     android:id="@+id/numberOfQuestionsLeft" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginLeft="20dp" 
     android:text="TextView" /> 
</RelativeLayout> 

Game.java

public class Game extends Activity { 



    private View fullView; 

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_game); 

     fullView = (View)findViewById(R.id.fullView); 
     fullView.setOnTouchListener(imageViewSwiped); 



    } 


OnTouchListener imageViewSwiped = new OnSwipeTouchListener() 
    { 
     public boolean onSwipeRight() 
     { 
      //code removed 
     } 

      public boolean onSwipeLeft() 
      { 
      //code removed 
       return true; 
      } 

      public boolean onSwipeBottom() 
      { 
       //code removed 
       return true; 
      } 


    }; 
} 

OnSwipTouchListener.java

注 - 我並不擁有這個類的代碼。它由另一位SO成員撰寫。

package game.Game; 
    import android.view.GestureDetector; 
    import android.view.GestureDetector.SimpleOnGestureListener; 
    import android.view.MotionEvent; 
    import android.view.View; 
    import android.view.View.OnTouchListener; 

    public class OnSwipeTouchListener implements OnTouchListener { 

     private final GestureDetector gestureDetector = new GestureDetector(new GestureListener()); 

     public boolean onTouch(final View v, final MotionEvent event) { 
      return gestureDetector.onTouchEvent(event); 
     } 

     private final class GestureListener extends SimpleOnGestureListener { 

      private static final int SWIPE_THRESHOLD = 100; 
      private static final int SWIPE_VELOCITY_THRESHOLD = 100; 

      @Override 
      public boolean onDown(MotionEvent e) { 
       return super.onDown(e); 
      } 

      @Override 
      public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 
       boolean result = false; 
       try { 
        float diffY = e2.getY() - e1.getY(); 
        float diffX = e2.getX() - e1.getX(); 
        if (Math.abs(diffX) > Math.abs(diffY)) { 
         if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) { 
          if (diffX > 0) { 
           result = onSwipeRight(); 
          } else { 
           result = onSwipeLeft(); 
          } 
         } 
        } else { 
         if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) { 
          if (diffY > 0) { 
           result = onSwipeBottom(); 
          } else { 
           result = onSwipeTop(); 
          } 
         } 
        } 
       } catch (Exception exception) { 
        exception.printStackTrace(); 
       } 
       return result; 
      } 
     } 

     public boolean onSwipeRight() { 
      return false; 
     } 

     public boolean onSwipeLeft() { 
      return false; 
     } 

     public boolean onSwipeTop() { 
      return false; 
     } 

     public boolean onSwipeBottom() { 
      return false; 
     } 
    } 

現在，我正在嘗試使整個活動接觸啓用。請查看Game.java以查看我是如何做到的。但問題是，它不會對任何觸摸事件做出反應！代碼OnSwipTouchListener.java沒有什麼不對，因爲我通過將偵聽器設置爲image view來使用了觸摸事件。在嘗試使整個活動觸摸啓用時必定存在問題。通過說「整個活動觸摸啓用」我的意思是，我需要滑過整個屏幕，而不是將聽衆添加到imageview。

我在這裏做了什麼錯？請幫忙！

Answer 1

按照要求由提問，該解決方案是在回答這個問題ontouchlistener-doesnt-work-with-relative-layout

Answer 2

將TouchListener添加到活動的最高級別佈局。這將會發現任何在其他地方沒有處理的情況。

Answer 3

您的RelativeLayout是否可以對焦？

android:focusable="true" 

和/或

android:focusableInTouchMode="true" 

Answer 4

這是我的例子：

@Override 
    public boolean onTouchEvent(MotionEvent event) { 
     super.onTouchEvent(event); 
     float x = event.getX(); 
     float y = event.getY(); 
     Toast.makeText(Example.this, "x=" + x + " y="+ y, 
       Toast.LENGTH_SHORT).show(); 
     return false; 
    } 

希望這對某人有幫助！歡呼！