Android手势无法正常工作图片

Question

我试图让滑动手势只能在简单的图像上工作。有没有人没有为什么它不工作。我得到“ontouchnow”，但没有左或右显示在textview上。

我列出了下面的代码：

public class MainActivity extends AppCompatActivity { 

    private GestureDetectorCompat gesyObject; 
    private TextView textView2; 
    private ImageView imageView; 

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

     gesyObject = new GestureDetectorCompat(this, new GesyOne()); 

     textView2 = (TextView) findViewById(R.id.textView2); 
     imageView = (ImageView) findViewById(R.id.imageView); 

     imageView.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
       textView2.setText("ontouchnow"); 
       return gesyObject.onTouchEvent(event); 
      } 
     }); 


    } 

    /*@Override 
    public boolean onTouchEvent(MotionEvent event) { 
     this.gesyObject.onTouchEvent(event); 
     return super.onTouchEvent(event); 
    } */ 

    class GesyOne extends GestureDetector.SimpleOnGestureListener{ 

     @Override 
     public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) { 
      if (event2.getX() > event1.getX()) { 
       textView2.setText("LEFT"); 

      } else if (event2.getX() < event1.getX()) { 
       textView2.setText("RIGHT"); 
      } 
      return true; 
     } 

    } 

} 

Answer 1

试试这个Subsampling Scale Image View

Answer 2

我现在这个工作。需要添加onDown运动事件返回true。排序。