小编Aym*_*ari的帖子

你好我有点问题.

我有一个项目的应用程序,但它是一个有点旧的应用程序(IOS 7).

我在互联网上看到如何使用好的旧UIAlertView的INSTEAD更新UIAlertController.

if (error.code) {
cancelBlock = block;


UIAlertController *alert = [UIAlertController alertControllerWithTitle: @"Message"
                                                                    message: @"Peripheral Disconnected with Error"
                                                             preferredStyle: UIAlertControllerStyleAlert];

UIAlertAction *alertAction = [UIAlertAction actionWithTitle: @"OK"
                                                      style: UIAlertActionStyleDestructive
                                                    handler: ^(UIAlertAction *action) {
                                                        NSLog(@"OK");
                                                    }];

[alert addAction: alertAction];

[self presentViewController: controller animated: YES completion: nil];







/*  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Peripheral Disconnected with Error"
                                                    message:error.description
                                                   delegate:self
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];*/

我收到一个我不明白的错误:

'RFduino'没有可见的@interface声明选择器'presentViewController:animated:completion'