我有它的作用就像一个按钮，自定义视图。我想改变，当用户preSS它，恢复的背景，原来的背景，当用户外移动手指或松开，我也想处理的onClick / onLongClick事件。问题是，onTouch要求我返回true ACTION_DOWN ，否则将不给我 ACTION_UP 事件。但是，如果我回到真正的的onClick 监听器将无法正常工作。

I've got a custom view which acts like a button. I want to change the background when user press it, revert the background to original when user moves the finger outside or release it and I also want to handle onClick/onLongClick events. The problem is that onTouch requires me to return true for ACTION_DOWN or it won't send me the ACTION_UP event. But if I return true the onClick listener won't work.

我想我在onTouch返回false，并注册的onClick解决了这个问题 - 它在某种程度上工作，但有点儿反对文档。我刚刚收到的消息，从一个用户告诉我，他不能够在按钮上长按一下，所以我不知道什么是错在这里。

I thought I solved it by returning false in onTouch and registering onClick - it somehow worked, but was kinda against the docs. I've just received a message from an user telling me that he's not able to long-click on the button, so I'm wondering what's wrong here.

目前的code部分：

public boolean onTouch(View v, MotionEvent evt)
{
  switch (evt.getAction())
  {
    case MotionEvent.ACTION_DOWN:
    {
      setSelection(true); // it just change the background
      break;
    }

    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_OUTSIDE:
    {
      setSelection(false); // it just change the background
      break;
    }
  }

  return false;
}

public void onClick(View v)
{
  // some other code here
}

public boolean onLongClick(View view)
  {
    // just showing a Toast here
    return false;
  }


// somewhere else in code
setOnTouchListener(this);
setOnClickListener(this);
setOnLongClickListener(this);

我如何让他们一起正常工作？

How do I make them work together correctly?

在此先感谢

推荐答案

的onClick ＆放大器; onLongClick 实际上是从调度 View.onTouchEvent 。

onClick & onLongClick is actually dispatched from View.onTouchEvent.

如果您重写 View.onTouchEvent 或设置一些特定的 View.OnTouchListener 通过 setOnTouchListener ， 你必须关心的。

if you override View.onTouchEvent or set some specific View.OnTouchListener via setOnTouchListener, you must care for that.

让你的code应该是这样的：

so your code should be something like:

public boolean onTouch(View v, MotionEvent evt)
{
  // to dispatch click / long click event,
  // you must pass the event to it's default callback View.onTouchEvent
  boolean defaultResult = v.onTouchEvent(evt);

  switch (evt.getAction())
  {
    case MotionEvent.ACTION_DOWN:
    {
      setSelection(true); // just changing the background
      break;
    }
    case MotionEvent.ACTION_CANCEL:
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_OUTSIDE:
    {
      setSelection(false); // just changing the background
      break;
    }
    default:
      return defaultResult;
  }

  // if you reach here, you have consumed the event
  return true;
}