如何檢查是否有人觸摸屏幕並拖動到特定方向？

Question

我想檢查是否有人將他們的手指放在屏幕的中心並向右拖，這怎麼能完成？

SOLUTION： http://www.codeshogun.com/blog/2009/04/16/how-to-implement-swipe-action-in-android/

Answer 1

查找到GestureDetector類

Answer 2

您可以實現的onTouchListener，做這樣的事情：

public boolean onTouch(View view, MotionEvent event) { 
    int currentX = event.getX();  

    if(event.getAction() == MotionEvent.ACTION_MOVE) { 
    // oldX would be defined as a private property of the class (most likely an Activity) 
    if(currentX > oldX) { 
     // moving right 

     oldX = currentX; 
    } else { 
     // moving left or not moving at all 

     oldX = currentX; 
    } 
    } 

    return true; 
} 

你或許可以玩弄這一點，使它發揮作用你想要的方式。