iOS推送通知权限提示-用户select做了什么？

Question

这是一种了解用户是否拒绝推送通知权限的方法吗？

我知道 didRegisterForRemoteNotificationsWithDeviceToken 将在用户允许推送通知的情况下被调用 - 但如果他不允许，将调用什么？

Answer 1

您可以通过以下方式实现。假设如果用户允许通知，那么您可以将设备令牌存储到用户默认值中。现在，下次您可以检查是否允许使用同一用户的默认天气用户。

- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
{

    NSString *aStrToken = [[deviceToken description] stringByTrimmingCharactersInSet: [NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    aStrToken = [aStrToken stringByReplacingOccurrencesOfString:@" " withString:@""];
    NSString *aStrStoredToken = [_appDelegate validateString:[[NSUserDefaults standardUserDefaults]objectForKey:@"deviceID"] :@""];

    if([aStrStoredToken length]==0) {
        [[NSNotificationCenter defaultCenter] postNotificationName:@"getDeviceToken" object:nil];

        [self setApplicationBadgeNumber:0];
        [[NSUserDefaults standardUserDefaults]setObject:aStrToken forKey:@"deviceID"];
        [[NSUserDefaults standardUserDefaults]synchronize];

        if(![[NSUserDefaults standardUserDefaults]objectForKey:@"setDeviceID"]) {
            [[NSUserDefaults standardUserDefaults]setObject:@"0" forKey:@"setDeviceID"];
            [[NSUserDefaults standardUserDefaults]synchronize];
        } else {
            [[NSUserDefaults standardUserDefaults]setObject:@"1" forKey:@"setDeviceID"];
            [[NSUserDefaults standardUserDefaults]synchronize];
        }
    }
}

Answer 2

根据UIApplicationDelegate Protocol Reference，如果在注册过程中发生错误，将调用application(_:didFailToRegisterForRemoteNotificationsWithError:)。

After you call the registerForRemoteNotifications method of the UIApplication object, the app calls this method when there is an error in the registration process.

有关如何在您的应用中实现远程通知的详细信息，请参阅本地和远程通知编程指南。

Answer 3

一个简单的方法来检查是否在应用程序中启用了通知。

-(BOOL)checkNotificationEnabled
    {

        if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0) {

        UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
            if (types == UIRemoteNotificationTypeNone)
            {
                return FALSE; //Notification not enabled
            }
            else
            {
                return TRUE;//Notification is  enabled

            }

        }
        else // for iOS 8 devices checking will be different
        {
            return [[UIApplication sharedApplication] isRegisteredForRemoteNotifications];
            // if return TRUE then Notification is  enabled
            // if return False then Notification is  not enabled

        }

    }

iOS推送通知权限提示-用户select做了什么？

iOS push notifications permission prompt - what did the user select?

push-notification

apple-push-notifications

ios