Android重写系统返回键

1、方法一

@Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { //TODO something return true; } return super.onKeyDown(keyCode, event); }

2、方法二

@Override public void onBackPressed() { //TODO something super.onBackPressed(); }