@Override
public void onBackPressed() {
if (isBackPressedFirst) {
super.onBackPressed();
} else {
isBackPressedFirst = true;
Util.toast("再按一次退出程序", 1400);
handler.postDelayed(
new Runnable() {
@Override
public void run() {
isBackPressedFirst = false;
}
},
1400);
}
}
