android - 如何检测用户是否停止在 EditText android 中输入

Question

我的布局中有一个 EditText 字段。当用户停止在该 edittext 字段中输入时，我想执行一个操作。我已经实现了 TextWatcher 并使用了它的功能

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) { }


@Override
public void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) { } 

@Override
    public void afterTextChanged(Editable editable) {

    }

函数 onTextChanged 和 afterTextChanged 在输入任何字符后立即被调用，但我想在用户完成在该 edittext 字段中输入后执行操作，就像 facebook在它的“签到”页面上执行。

我该如何实现？

Answer 1

这就是我的工作方式!

long delay = 1000; // 1 seconds after user stops typing
long last_text_edit = 0;
Handler handler = new Handler();

private Runnable input_finish_checker = new Runnable() {
    public void run() {
        if (System.currentTimeMillis() > (last_text_edit + delay - 500)) {
            // TODO: do what you need here
            // ............
            // ............
            DoStuff();
        }
    }
};

EditText editText = (EditText) findViewById(R.id.editTextStopId);
editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged (CharSequence s,int start, int count,
    int after){
    }
    @Override
    public void onTextChanged ( final CharSequence s, int start, int before,
    int count){
        //You need to remove this to run only once
        handler.removeCallbacks(input_finish_checker);

    }
    @Override
    public void afterTextChanged ( final Editable s){
        //avoid triggering event when text is empty
        if (s.length() > 0) {
            last_text_edit = System.currentTimeMillis();
            handler.postDelayed(input_finish_checker, delay);
        } else {

        }
    }
}

);