public boolean onKeyDown(int keyCode, KeyEvent event) {
?// TODO Auto-generated method stub
?switch (keyCode) {
?case KeyEvent.KEYCODE_BACK:
??AlertDialog.Builder build=new AlertDialog.Builder(this);
??build.setTitle("注意")
????.setMessage("確定要退出嗎？")
????.setPositiveButton("確定", new DialogInterface.OnClickListener() {
?????
?????@Override
?????public void onClick(DialogInterface dialog, int which) {
??????onDestroy();
??????System.exit(0);
??????finish();??????
?????}
????})
????.setNegativeButton("取消", new DialogInterface.OnClickListener() {??????
?????@Override
?????public void onClick(DialogInterface dialog, int which) {
??????// TODO Auto-generated method stub???????
?????}
????})
????.show();
??break;
?default:
??break;
?}
?return false;?
}

轉載于:https://www.cnblogs.com/hao222/p/3542693.html

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