触摸监听器在屏幕上得到用户的运动，但有一个问题是，条件称为大量时间

Question

I want to get user finger location on screen so 

在于，当 用户向上移动她的手指，但执行像增加音量一些动作，我面临着 问题我想在用户运行的代码向上移动调用多次 偶数用户只需将她在屏幕上的手指的任何一个可以帮助我

layout.setOnTouchListener(new View.OnTouchListener() { 
    @Override 
    public boolean onTouch(View v, MotionEvent event) { 

     switch (event.getAction()) { 

      case MotionEvent.ACTION_DOWN: { 
       // store the X value when the user's finger was pressed down 
       downXValue = event.getX(); 
       downYValue = event.getY(); 
       Log.d("recording", "= " + downYValue); 
       break; 
      } 

      case MotionEvent.ACTION_MOVE: { 
       // Get the X value when the user released his/her finger 
       float currentX = event.getX(); 
       float currentY = event.getY(); 
       // check if horizontal or vertical movement was bigger 

       if (Math.abs(downXValue - currentX) > Math.abs(downYValue 
         - currentY)) { 
        Log.d("recording", "x"); 
        // going backwards: pushing stuff to the right 
        if (downXValue < currentX) { 
         Log.d("recording", "right"); 

        } 

        // going forwards: pushing stuff to the left 
        if (downXValue > currentX) { 
         Log.d("recording", "left"); 

        } 

       } else { 
        Log.d("recording", "y "); 

        if (downYValue < currentY) { 
         Log.d("recording", "down"); 




         } 
        } 
        if (downYValue > currentY) { 
         Log.d("recording", "up"); 




        } 
       } 
       break; 
      } 

     } 

     return true; 

    } 


}); 

任何人给我很好的建议，我该怎么办

Answer 1

CUSTOME GESTURE LISTENER

import android.util.Log; 
import android.view.GestureDetector; 
import android.view.MotionEvent; 


public class SimpleGestureListener extends GestureDetector.SimpleOnGestureListener { 
    private static final String TAG = "SimpleGestureListener"; 
    private Listener mListener; 

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

    @Override 
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { 
     Log.i(TAG,e1.toString()+"\n"+e2.toString()); 
     Log.d(TAG,"distanceX = "+distanceX+",distanceY = "+distanceY); 
     if (mListener == null) 
      return true; 

     if (distanceX == 0 && Math.abs(distanceY) > 1){ 
      mListener.onScrollVertical(distanceY); 
     } 

     if (distanceY == 0 && Math.abs(distanceX) > 1){ 
      mListener.onScrollHorizontal(distanceX); 
     } 
     return true; 
    } 


    public void setListener(Listener mListener) { 
     this.mListener = mListener; 
    } 

    interface Listener{ 
     /** 
     * left scroll dx >0 
     * right scroll dx <0 
     * @param dx 
     */ 
     void onScrollHorizontal(float dx); 

     /** 
     * upward scroll dy > 0 
     * downward scroll dy < 0 
     * @param dy 
     */ 
     void onScrollVertical(float dy); 
    } 
} 

用法

public class MainActivity extends AppCompatActivity { 
    private static final String TAG = "MainActivity"; 
    private GestureDetector mDetector; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     SimpleGestureListener simpleGestureListener = new SimpleGestureListener(); 
     simpleGestureListener.setListener(new SimpleGestureListener.Listener() { 
      @Override 
      public void onScrollHorizontal(float dx) { 
       Log.i(TAG,"horizontal = " +dx); 
      } 

      @Override 
      public void onScrollVertical(float dy) { 
       Log.i(TAG,"vertical = " +dy); 
      } 
     }); 
     mDetector = new GestureDetector(this, simpleGestureListener); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     mDetector.onTouchEvent(event); 
     return super.onTouchEvent(event); 
    } 
} 

您可以在应用程序中使用上面的代码追踪：

1. 左右轻扫
2. 顶向下轻扫