iphone - 如果操作从 UIAlertView 委托(delegate)启动，则 UIViewController 在从导航 Controller 弹出后不会被释放

Question

请您看一下这段代码:

/* This app is a game, the user can click an "abort" button anytime,
 * and he/she is therefore asked for confirmation ("really abort game?")
 */
- (IBAction)btnAbortClicked:(id)sender {
    UIAlertView *alert = [[UIAlertView alloc] init];
    [alert setMessage:@"Really abort game?"];
    [alert setDelegate:self];
    [alert addButtonWithTitle:@"Yes"];
    [alert addButtonWithTitle:@"No"];
    [alert show];
    [alert release];
}

/* Delegate method (I don't like it, I wish I had modal blocking windows) */
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0)
    [self quitGame];
}

/* pop the view controller */
- (void)quitGame {
    [self.navigationController popToRootViewControllerAnimated:YES];
}

问题很简单 - 但显然不足以让我解决。 UIViewController 被弹出，但没有被释放。这个问题与 UIAlertView 严格相关，因为如果我只是从 btnAbortClicked: 调用 quitGame， View Controller 就会弹出并立即释放。

相反，似乎有一些神秘的实体保留了它。

你能帮我吗？提前致谢。

Answer 1

嗯，我认为当调用 clickedButtonAtIndex 时你仍然在alertView中。我建议改为使用alertView:disDismissWithButtonIndex，以便在alertview 消失后调用您。