edittext

1.点击回车会响应两次

editTextSearch.setOnKeyListener(new View.OnKeyListener() {       @Override       public boolean onKey(View v, int keyCode, KeyEvent event) {          if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_DOWN) {                   //TODO                                   }                return false;            }        });

2.得到和失去焦点的监听

editTextSearch.setOnFocusChangeListener(new View.OnFocusChangeListener() {    @Override    public void onFocusChange(View v, boolean hasFocus) {        if (hasFocus){            //获得焦点事件        }else {        }    }});

3.对内容变化的监听