xcode-UIAlertView帶有no按鈕，怎麼關閉

UIAlertView帶有no按鈕，怎麼關閉

應用中有一個alertView，在服務器返回響應時使用。在應用向服務器發送數據之後，alertView會顯示，但是應該怎麼關閉呢？

摘抄的部分代碼：

   UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Canceling reservation" message:@"please wait" delegate:self cancelButtonTitle:nil otherButtonTitles: nil];
        [alert show];

        UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

        // Adjust the indicator to place at the bottom of the dialog window.
        indicator.center = CGPointMake(alert.bounds.size.width / 2, alert.bounds.size.height-50);
        [indicator startAnimating];
        [alert addSubview:indicator];

最佳回答：

• (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated;