在LongPress之后移动事件

Question

在我的GestureDetector中使用LongPress后,如何收听移动事件？

当用户LongClick他启动选择模式时,可以将一个方块拖入屏幕.但我注意到在使用LongPress后没有调用onScroll.

Answer 1

试图做一段时间的斗争,现在的解决方案是:

1. 在gestureDetector上使用setIsLongpressEnabled(isLongpressEnabled)禁用longpress

这是我的View的OnTouch方法:

public boolean onTouchEvent(MotionEvent event) {
        if (mGestureDetector.onTouchEvent(event)== true)
        {
            //Fling or other gesture detected (not logpress because it is disabled)
        }
        else
        {
            //Manually handle the event.
            if (event.getAction() == MotionEvent.ACTION_DOWN)
            {
                //Remember the time and press position
                Log.e("test","Action down");
            }
            if (event.getAction() == MotionEvent.ACTION_MOVE)
            {
                //Check if user is actually longpressing, not slow-moving 
                // if current position differs much then press positon then discard whole thing
                // If position change is minimal then after 0.5s that is a longpress. You can now process your other gestures 
                Log.e("test","Action move");
            }
            if (event.getAction() == MotionEvent.ACTION_UP)
            {
                //Get the time and position and check what that was :)
                Log.e("test","Action down");
            }

        }
        return true;
    }

每当我在屏幕上按住手指时,我的设备都会返回ACTION_MOVE.如果你没有,只需使用定时器或线程检查0.5秒后的某些按下标志的状态.

希望有所帮助!