Android 觸摸手勢 OnGestureListener

OnGestureListener 可以處理一些簡單的觸摸手勢，比如滑動，長按等，

OnGestureListener不能直接設置偵聽的，可以設置OnTouchListener，讓其指向OnGestureListener

public class GestureView extends View implements OnTouchListener, OnGestureListener
{
GestureDetector mGestureDetector;

public GestureView(Context context)
{
super(context);

this.setOnTouchListener(this);
mGestureDetector = new GestureDetector(this);
}

@Override
public boolean onDown(MotionEvent e)
{
Log.i("@fred", "觸摸手勢：onDown");
return true;
}

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
{
if (e2.getX() - e1.getX() > 50)
{
Log.i("@fred", "觸摸手勢：onFling");
}
return true;
}

@Override
public void onLongPress(MotionEvent e)
{
Log.i("@fred", "觸摸手勢：onLongPress");

}

@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)
{
Log.i("@fred", "觸摸手勢：onScroll");
return true;
}

@Override
public void onShowPress(MotionEvent e)
{
Log.i("@fred", "觸摸手勢：onShowPress");
}

@Override
public boolean onSingleTapUp(MotionEvent e)
{
Log.i("@fred", "觸摸手勢：onSingleTapUp");
return true;
}

@Override
public boolean onTouch(View v, MotionEvent event)
{
// 將MotionEvent事件傳到GestureDetector
return mGestureDetector.onTouchEvent(event);
}

}

比如點擊一下屏幕：

更多Android相關信息見Android 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=11