伙计我做错了什么

Question

似乎不能使用UIAlertview，我该怎么办？ 我尝试过使用UIAlertviewcontroller，但都无济于事。任何帮助将不胜感激。

Answer 1

UIAlertView是一种弃用的方法。请参阅此SO post。

UIAlertController * alert = [UIAlertController
                             alertControllerWithTitle:@"Title"
                             message:@"Finished! \nYour results"
                             preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction* restartButton = [UIAlertAction
                            actionWithTitle:@"Restart"
                            style:UIAlertActionStyleDefault
                            handler:^(UIAlertAction * action) {
                                //Your restart button action goes here
                            }];



[alert addAction:restartButton];
[self presentViewController:alert animated:YES completion:nil];

Answer 2

//使用此更新的警报视图代码...

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Title"

                                                                                      message:@"Message"

                                                                               preferredStyle:UIAlertControllerStyleAlert];

//我们通过创建UIAlertActions向警报控制器添加按钮：

UIAlertAction *actionOk = [UIAlertAction actionWithTitle:@"Ok"

                                                                style:UIAlertActionStyleDefault

                                                              handler:nil]; //You can use a block here to handle a press on this button

             [alertController addAction:actionOk];

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