Question

如何更改适合上述iOS 9的对象代码？我将X Code更新为8.2.1时出现此错误。代码如下

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex];

    if([title isEqualToString:@"Continue"]){
        NSLog(@"Continue...");
        [self performSegueWithIdentifier:@"createlogin" sender:self];
    }
}

错误：

不推荐使用UIAlertView：首先在iOS 9.0中弃用 - UIAlertView 已弃用。使用UIAlertController的preferredStyle 而是UIAlertControllerStyleAlert

感谢。

Answer 1

 UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"Add Title" message:@"Add Message" preferredStyle:UIAlertControllerStyleAlert];
     UIAlertAction * actionOK = [UIAlertAction actionWithTitle:@"Button Title" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                        //Here Add Your Action
                    }];
     UIAlertAction * actionCANCEL = [UIAlertAction actionWithTitle:@"Second Button Title" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                        //Add Another Action
                    }];


               [alert addAction:actionOK];
             [alert addAction:actionCANCEL];

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

如果有任何需要，请使用此方法，有关更多信息，请使用此链接http://useyourloaf.com/blog/uialertcontroller-changes-in-ios-8/

Answer 2

使用此代码

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Title" message:@"Message" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction * continueButton = [UIAlertAction actionWithTitle:@"Continue" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action){
      [self performSegueWithIdentifier:@"createlogin" sender:self];
  }];
 UIAlertAction * cancelButton = [UIAlertAction actionWithTitle:@"cancel" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action){

  }];
[alert addAction:continueButton];
[alert addAction:cancelButton];
[self presentViewController:alert animated:YES completion:nil];

Answer 3

试试这个：

UIAlertController *controller = [UIAlertController alertControllerWithTitle:@"Your message title"
                                                                                message:@"Enter your message here."
                                                                         preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action)
 {
     NSLog(@"Ok Action");
 }];
UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"Skip" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action)
 {
     NSLog(@"Cancel Action");
}];

[controller addAction:okAction];
[controller addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];

不推荐使用UIAlertView：在iOS 9.0中首先弃用 - 不推荐使用UIAlertView。将UIAlertController与preferredStyle一起使用

3 个答案: