Android onKeyListener问题

Question

我有一个editText，当用户按下键盘上的空格键时，我希望它被清空。(这里是android的新手)

 UserInput.setOnKeyListener(new EditText.OnKeyListener(){
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if((event.getAction() == KeyEvent.ACTION_DOWN) && (event.getKeyCode() == event.KEYCODE_SPACE)) {
                UserInput.setText("");
            }
            return false;
        }
    });

任何帮助都将不胜感激！

Answer 1

当用户单击“空间”按钮定义您自己的操作时，请尝试这一点对您非常有用.

youredittext.setOnKeyListener(new View.OnKeyListener() {
      public boolean onKey(View v,  int keyCode, KeyEvent event) {

        // If the event is a key-down event on the "enter" button
        if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
            (keyCode == KeyEvent.KEYCODE_SPACE)) {
          // Perform action on key press
           youredittext.setText("");
          Toast.makeText(getApplicationContext(), youredittext.getText(), Toast.LENGTH_SHORT).show();
          return true;
        }
        return false;
    }
});