java – 如何将键事件发送到编辑文本

例如,将退格键发送到编辑文本控件以删除字符或发送字符代码(如112)以编程方式在edittext控件中附加字符.

实际上,我需要一个类似的方法

void onKeyReceived(int keyCode)
{
  // here I would like to append the keyCode to EditText, I kNow how to add a visible character, but what about some special keys, like arrow key, backspace key.
}

解决方法:

要将模拟退格键发送到EditText,您必须发送按键和释放事件.像这样：

mEditText.dispatchKeyEvent(new KeyEvent(0, 0, KeyEvent.ACTION_DOWN,
    KeyEvent.KEYCODE_DEL, 0));
mEditText.dispatchKeyEvent(new KeyEvent(0, 0, KeyEvent.ACTION_UP,
    KeyEvent.KEYCODE_DEL, 0));

这可用于发送任何其他密钥代码,而不仅仅是删除.