iphone - 没有按钮的 UIAlertView 以及如何关闭它

Question

我在警报 View 中有事件指示器，直到我的应用程序获得服务器响应为止。应用程序将数据发送到服务器，警报 View 显示当服务器向我发送响应时如何关闭它。这是我的警报中的代码

        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];

Answer 1

[alert dismissWithClickedButtonIndex:0 animated:YES];