iOS 10: UIAlertController 只显示一个动作

Question

我有一个 UIAlertController:

UIAlertController *actionSheet = [UIAlertController
                                          alertControllerWithTitle:@"Options"
                                          message:@""
                                          preferredStyle:UIAlertControllerStyleAlert];

        UIAlertAction *start = [UIAlertAction
                             actionWithTitle:@"Start"
                             style:UIAlertActionStyleDefault
                             handler:^(UIAlertAction * action)
                             {

                                 [self DisplayAlert:@"" textval:@"You are about to start. Would you like to continue?"];
                                 [actionSheet dismissViewControllerAnimated:YES completion:nil];
                             }];
        UIAlertAction *idle = [UIAlertAction
                             actionWithTitle:@"Idle"
                             style:UIAlertActionStyleDefault
                             handler:^(UIAlertAction * action)
                             {

                                 [self DisplayAlert:@"" textval:@"You are about to idle. Would you like to continue?"];
                                 [actionSheet dismissViewControllerAnimated:YES completion:nil];
                             }];
        UIAlertAction *stop = [UIAlertAction
                             actionWithTitle:@"Stop"
                             style:UIAlertActionStyleDefault
                             handler:^(UIAlertAction * action)
                             {

                                 [self DisplayAlert:@"" textval:@"You are about to stop. Would you like to continue?"];
                                 [actionSheet dismissViewControllerAnimated:YES completion:nil];
                             }];
        UIAlertAction *enable = [UIAlertAction
                               actionWithTitle:@"Enable"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action)
                               {

                                   [self DisplayAlert:@"" textval:@"You are about to enable. Would you like to continue?"];
                                   [actionSheet dismissViewControllerAnimated:YES completion:nil];
                               }];

        UIAlertAction *disable = [UIAlertAction
                               actionWithTitle:@"Disable"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action)
                               {

                                   [self DisplayAlert:@"" textval:@"You are about to disable. Would you like to continue?"];
                                   [actionSheet dismissViewControllerAnimated:YES completion:nil];
                               }];

        UIAlertAction *clear = [UIAlertAction
                               actionWithTitle:@"Clear"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action)
                               {

                                   [self DisplayAlert:@"" textval:@"You are about to clear. Would you like to continue?"];
                                   [actionSheet dismissViewControllerAnimated:YES completion:nil];
                               }];
        UIAlertAction *cancel = [UIAlertAction
                             actionWithTitle:@"Cancel"
                             style:UIAlertActionStyleDestructive
                             handler:^(UIAlertAction * action)
                             {
                                 [actionSheet dismissViewControllerAnimated:YES completion:nil];
                             }];


        [actionSheet addAction:start];
        [actionSheet addAction:idle];
        [actionSheet addAction:stop];
        [actionSheet addAction:enable];
        [actionSheet addAction:disable];
        [actionSheet addAction:clear];
        [actionSheet addAction:cancel];
        [actionSheet setModalPresentationStyle:UIModalPresentationPopover];
        [actionSheet.view setTintColor:[UIColor blackColor]];
        UIPopoverPresentationController *popPresenter = [actionSheet popoverPresentationController];
        popPresenter.barButtonItem = wellControlItem;
        [appDelegate.splitViewController presentViewController:actionSheet animated:YES completion:nil];

为什么在 iPad 上显示菜单时只显示其中一个操作？我在 10.1 iPad SIM 卡和设备（两者都不工作）以及 10.1 iPhone 7 SIM 卡和设备（在所有 iPhones 上工作）上进行了测试。

自从我在 iOS 8 发布（添加了 setTintColor）后修复它以来，它一直有效。调试它显示添加了“7 个动作”，所以我不确定从这里到哪里去获取 UIAlertControllerStyleActionSheet，这是所需的显示选项。 UIAlertControllerStyleAlert 显示所有 7 个，但我喜欢旧的 UIAlertControllerStyleActionSheet 外观。

Answer 1

在 iOS 10 下，如果您尝试设置警报控制器视图的 tintColor，则显示样式为 "ActionSheet" 的 UIAlertController 无法正常工作。我运行在为 iOS 10 更新我的应用程序时遇到了这个问题。我向 Apple 提交了错误报告。

所以您的主要问题将通过不调用来解决：

[actionSheet.view setTintColor:[UIColor blackColor]];

下 iOS 10.

与此问题无关，您的代码错误地试图从各种警报操作中关闭警报控制器。不要这样做。警报将自动解除。您需要删除对以下内容的所有调用：

[actionSheet dismissViewControllerAnimated:YES completion:nil];

iOS 10: UIAlertController 只显示一个动作

iOS 10: UIAlertController only showing one action

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