@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// 按下鍵盤上返回按鈕
if (keyCode == KeyEvent.KEYCODE_BACK) {
new AlertDialog.Builder(this)
.setTitle("Message Box")
.setMessage("Sure to exit?")
.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
})
 
 
 
.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
finish();
}
}).show();
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}
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