/** 监听回车操作，如果用户输入回车后，则直接收起软键盘 */
mEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
        @Override
        public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
            if (actionId == EditorInfo.IME_ACTION_UNSPECIFIED) {
                //收起键盘
                InputMethodManager imm =  (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
                if(imm != null) {
                    imm.hideSoftInputFromWindow(getWindow().getDecorView().getWindowToken(), 0);
                }
                //如果是回车操作，则返回true，消费掉此次事件
                return true;
            }
            return false;
        }
    });