调用android虚拟机返回键

代码如下经供参考： @Override public boolean onKeyDown(int keyCode, KeyEvent event){ if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { // Do something需要执行的代码 Toast.makeText(this, “dff”, Toast.LENGTH_LONG).show(); RegisterPhoneActivity.this.finish(); return true; } return super.onKeyDown(keyCode, event); }