android 键盘 退格键功能

自定义一个“删除”键，模拟键盘 退格键功能

int  keyCode =KeyEvent.KEYCODE_DEL;  //这里是退格键

KeyEvent keyEventDown = new KeyEvent(KeyEvent.ACTION_DOWN, keyCode);

 

KeyEvent keyEventUp = new KeyEvent(KeyEvent.ACTION_UP, keyCode);

editNumber.onKeyDown(keyCode, keyEventDown);  

editNumber.onKeyUp(keyCode, keyEventUp);