onTouchListener不工作 [英] onTouchListener not working

问题描述

我有以下的code。在我的活动。在我的XML，视频的看法是线性布局中。然而，该视图被点击时，在 onTouchListener 永远不会触发。我试图改变 onTouchListener 到 vvLive 但这并没有做任何事情。我也试图改变 onTouchListener 到 onClickListener ，但没有。任何人都知道为什么监听器在不触发？谢谢你。

I have the following code in my activity. In my xml, the video view is inside the linear layout. However, when the view is clicked, the onTouchListener never fires. I tried changing the onTouchListener to vvLive but that didn't do anything. I also tried changing the onTouchListener to an onClickListener, but nothing. Anyone know why the listener isn't firing? Thanks.

        private VideoView vvLive;
        LinearLayout linearLayoutLiveVideo;

        linearLayoutLiveVideo.setOnTouchListener(new OnTouchListener(){
            public boolean onTouch(View v, MotionEvent event){
                Log.d(TAG, "onTouch entered");
                if(event.getAction() == MotionEvent.ACTION_UP) {
                    Log.d(TAG, "ACTION_UP");

                }
                return false;
            }
        });

修改： 我实现了code以上的实际工作。东西在月食被搞乱LogCat中。当我重新启动日食，LogCat中打印的第一个日志onTouch进入。然而，ACTION_UP没有被打印。我改变了MotionEvent为 MotionEvent.ACTION_DOWN 现在LogCat中打印。为什么 ACTION_DOWN 的工作，但 ACTION_UP 不？

EDIT: I realized the code above actually works. Something in eclipse was messing up LogCat. After I restarted eclipse, LogCat prints the first log "onTouch entered". However, "ACTION_UP" was not being printed. I changed the MotionEvent to MotionEvent.ACTION_DOWN and the LogCat prints now. Why does ACTION_DOWN work but ACTION_UP does not?

推荐答案

ACTION_UP永远不会被发送到你的听众，因为你返回false，并为此不消费的事件。返回true，你会得到的启动事件（ACTION_DOWN）以及所有后续的（ACTION_MOVE然后ACTION_UP）。

ACTION_UP is never being sent to your listener because you return false and therefor don't "consume" the event. Return true and you'll get the start event (ACTION_DOWN) as well as all the subsequent ones (ACTION_MOVE and then ACTION_UP).

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