iphone - IOS中的didFinishLaunchingWithOptions错误-objective-c应用程序开发

Question

在我的“didFinishLaunchingWithOptions”函数中，我在最后给出以下行：-

[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
    return [super application:application didFinishLaunchingWithOptions:launchOptions]; 

但它给出了以下警告：-

'NSObject' may not respond to 'application:didFinishLaunchingWithOptions' function 

当我构建它时，应用程序以“未捕获的异常错误”终止

任何人都可以提出为什么会这样。谢谢

Answer 1

尝试

[self application:application didFinishLaunchingWithOptions:launchOptions];

像 NSObject 这样的基本对象不实现didFinishLaunchingWithOptions:launchOptions

Answer 2

你应该在 didFinishLaunchingWithOptions:launchOptions 结束时返回 YES

[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
return YES;