implicit conversion of 'unsigned long 'UIU

问题:

Push notification in iOS 8 Doesn't work.

Error display:

implicit conversion of 'unsigned long 'UIUserNotificationSettings *' is disallowed with arc

Code:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [application registerUserNotificationSettings:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge)];
    return YES;
}

I'm using ios 8.0 and xcode 6 beta.

回答1:

I am getting from below from official documentation of iOS 8.

• Apps that use local or push notifications must explicitly register the types of alerts that they display to users by using a UIUserNotificationSettings object. This registration process is separate from the process for registering remote notifications, and users must grant permission to deliver notifications through the requested options.
• Local and push notifications can include custom actions as part of an alert. Custom actions appear as buttons in the alert. When tapped, your app is notified and asked to perform the corresponding action. Local notifications can also be triggered by interactions with Core Location regions.

And also read

https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIUserNotificationSettings_class/index.html#//apple_ref/occ/cl/UIUserNotificationSettings

AND

https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIApplication_Class/index.html#//apple_ref/occ/instm/UIApplication/registerUserNotificationSettings:

So Answer should be..

/// First register notification setting with settings type like 
[[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
[[UIApplication sharedApplication] registerForRemoteNotifications]; // you can also set here for local notification.

回答2:

- (void)registerForRemoteNotificationTypes:(NSUInteger)notificationTypes categories:(NSSet *)categories
{
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
    {
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:notificationTypes categories:categories]];
    }
    else if ([UIApplication instancesRespondToSelector:@selector(registerForRemoteNotificationTypes:)])
    {
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes:notificationTypes];
    }
}

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
    if ([UIApplication instancesRespondToSelector:@selector(registerForRemoteNotifications)])
    {
        [[UIApplication sharedApplication] registerForRemoteNotifications];
    }
}

Try UIUserNotificationSettings-Extension, provides helper methods that will make you much easier to handle the new #iOS8 #Interactive #Notifications.

回答3:

Here it is:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:    (NSDictionary *)launchOptions
{
// are you running on iOS8?

if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) 
  {
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeBadge|UIUserNotificationTypeAlert|UIUserNotificationTypeSound) categories:nil];
    [application registerUserNotificationSettings:settings];
  } 
else // iOS 7 or earlier
  {
    UIRemoteNotificationType myTypes = UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound;
    [application registerForRemoteNotificationTypes:myTypes];
  }
}

回答4:

Please take a look at the log provided during run-time. At first, without user registration of local events, the log does suggest

UILocalNotificationInfiniteRepeatCount, next fire date = Wednesday, 4 June 2014 9:27:24 pm India Standard Time, user info = (null)} with an alert but haven't received permission from the user to display alerts.

This is iOS 8.

And so, in this case, you also need to use

[[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert) categories:nil]];

in didFinishLaunchingWithOptions.

回答5:

This is what you need to handle both iOS 8 and anything less than iOS 8

if (SYSTEM_VERSION_LESS_THAN(@"8.0")) {
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert];
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeNone];
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge];
} else {
    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
    [[UIApplication sharedApplication] registerForRemoteNotifications];
}