didFinishLaunchingWithOptions未调用

Question

我无法启用推送通知。

使用此代码我尝试启用通知：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

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

    return YES;
}

它不起作用，所以我在行

中添加了一个断点

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

但似乎这部分代码永远不会执行。

为什么这不起作用？

Answer 1

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

这应该在您的UIApplicationDelegate中实施，而不是在UIViewController中实施。如果你在UIViewController中拥有它，它将永远不会被调用。从那里取出代码并将其放在UIApplicationDelegate中。