如何在MotionEvent的參數中添加

Question

我寫了一些代碼來從ImageView中獲取位置。下面是我的代碼：

private void touchLocation(MotionEvent e){ 
float x = e.getX(); 
float y = e.getY(); 

String message = "Location is x = " + x + ", y = " + y "."; 

Context context = getApplicationContext(); 
int duration = Toast.LENGTH_LONG: 

Toast toast = Toast.makeText(context, message, duration); 
toast.show(); 

}

在onCreate（）方法，如何將我調用這個函數？任何建議，非常感謝。我應該如何用類MotionEvent實例化一個對象？

Answer 1

imageView.setOnTouchListener(new OnTouchListener(){ 

    @Override 
    public boolean onTouch(View v, MotionEvent e) { 

    float x = e.getX(); 
    float y = e.getY(); 

    String message = "Location is x = " + x + ", y = " + y "."; 

    // more code 

    return true; 
    } 
});