我使用的过滤一个EditText我的名单。我想过滤列表中的用户后的 0.5，第二个有完成打字的EditText 。我使用了 TextWatcher 的 afterTextChanged 事件作此用途。但是，这一事件上升为EditText上每个字符的变化。

我应该怎么办？

  editText.addTextChangedListener（
    新TextWatcher（）{
        @覆盖公共无效onTextChanged（CharSequence中，诠释开始，诠释之前，诠释计数）{}
        @覆盖公共无效beforeTextChanged（CharSequence中，诠释开始，诠释计数，诠释之后）{}

        私人定时器定时=新的Timer（）;
        私人最终长延时= 500; //毫秒

        @覆盖
        公共无效afterTextChanged（最终可编辑S）{
            timer.cancel（）;
            定时器=新的Timer（）;
            timer.schedule（
                新的TimerTask（）{
                    @覆盖
                    公共无效的run（）{
                        // TODO：做什么，你需要在这里（刷新列表）
                        //你可能需要使用runOnUiThread（Runnable的行动）的一些具体行动
                    }
                }，
                延迟
            ）;
        }
    }
）;
 

诀窍是取消并重新安排定时器每一次，当的EditText 文本得到改变。祝你好运！

I am filtering my list using an EditText. I want to filter the list 0.5 second after user has finished typing in EditText. I used the afterTextChanged event of TextWatcher for this purpose. But this event rises for each character changes in EditText.

What should I do?

editText.addTextChangedListener(
    new TextWatcher() {
        @Override public void onTextChanged(CharSequence s, int start, int before, int count) { }
        @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { }

        private Timer timer=new Timer();
        private final long DELAY = 500; // milliseconds

        @Override
        public void afterTextChanged(final Editable s) {
            timer.cancel();
            timer = new Timer();
            timer.schedule(
                new TimerTask() {
                    @Override
                    public void run() {
                        // TODO: do what you need here (refresh list)
                        // you will probably need to use runOnUiThread(Runnable action) for some specific actions
                    }
                }, 
                DELAY
            );
        }
    }
);

The trick is in canceling and re-scheduling Timer each time, when text in EditText gets changed. Good luck!