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我尝试在我的项目中实现一个小拖放系统，到目前为止我有：

@Override
    public boolean onDrag(View eventView, DragEvent event) {

    final int action = event.getAction();

    switch (action) {

    case DragEvent.ACTION_DRAG_STARTED:

        DragAndDropState.itWasDropped = false;

        draggedView = (View) event.getLocalState();

        if (draggedView.getParent() != null) {


            draggedTargetParent = (View) draggedView.getParent();
            DragAndDropState.dragStartPosition = (Integer) draggedTargetParent.getTag();

            Log.i("START draggedView ", draggedView.toString());
            Log.i("START parent: ", draggedTargetParent.toString());

        }



        ((ViewGroup) eventView).removeView((View) event.getLocalState());

        return true;


    case DragEvent.ACTION_DROP: //............... more code

在我长按视图后，我在 logcat 中看到： 

09-03 14:08:48.236: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.236: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:48.236: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.236: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:48.236: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.236: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:48.236: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.246: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:48.246: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.246: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:48.246: I/START draggedView(12796): hu.fun.views.slot.ItemInSlotView@42ae2ef0
    09-03 14:08:48.246: I/START parent:(12796): hu.fun.views.slot.Slot@42ab7e68
    09-03 14:08:49.137: I/ViewRootImpl(12796): Reporting drop result: true

没错。我得到了 6 个（六个！） onDragEvents由一个 longclick触发，一个 onLongClick 侦听器在一个 View 目标上。

任何人都可以解释我为什么会这样，或者为什么它很好？

我真的很想只处理其中的一个，用这样的消息淹没 logcat 真是太烦人了，我无法调试这样的方式。

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