Question

如果可能的话，我正在寻找应用代理重定向回主要故事，但我仍然偶然发现应用委托方法无效的错误。

AppDelegate.h

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate,UIAlertViewDelegate>

@property (strong, nonatomic) UIWindow *window;


@end

AppDelegate.m

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    UIApplicationState state = [application applicationState];
    if (state == UIApplicationStateActive) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Daily Vibes"
                                                        message:notification.alertBody
                                                       delegate:self cancelButtonTitle:@"Okay"
                                                        otherButtonTitles:nil];
        [alert show];
    }
}

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

        if([title isEqualToString:@"Okay"])
        {
            UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
            UIViewController *mainViewController = [storyboard instantiateInitialViewController];
            self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
            self.window.rootViewController = mainViewController;
            [self.window makeKeyAndVisible];


        }
    }

我想知道点击UIAlertView时可以将它们重定向回主板

Answer 1

只需在现有窗口上设置根视图控制器即可。您不需要创建新窗口，也不需要将其设置为关键且可见。

如果您想获得幻想，可以使用UIView转换或CATransition为转换设置动画。

这似乎是一种不寻常的尝试，但是 - 您将丢失任何状态或未保存的数据，这可能对您的用户来说很奇怪。

Answer 2

如果要呈现视图控制器，请尝试以下操作：

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

    if([title isEqualToString:@"Okay"])
    {
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
        UIViewController *vc = [storyboard instantiateInitialViewController];
        [self.window.rootViewController presentViewController:vc animated:YES completion:nil]

    }
}

AppDelegate可以重定向??我得到的错误委托不是方法

2 个答案: