ios - 从UIUserNotificationTypeNone传递给UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound

您知道从UIUserNotificationTypeNone传递到UIUserNotificationTypeAlert的方法吗？ UIUserNotificationTypeBadge | UIUserNotificationTypeSound(iOS8)？

传递给UIUserNotificationTypeNone效果很好，但是当用户尝试再次切换以启用时效果不佳...

这是我的代码:

 // Register for Push Notifications, if running iOS 8
                    if ([application respondsToSelector:@selector(registerUserNotificationSettings:)])
                    {
                        UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound);
                        UIUserNotificationSettings * settingsAvailable = [UIUserNotificationSettings settingsForTypes:userNotificationTypes categories:nil];
                        [application registerUserNotificationSettings:settingsAvailable];
                        [application registerForRemoteNotifications];
                    }

                    else
                    {
                        // Register for Push Notifications before iOS 8
                        [application registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)];
                    }

切换后启用委托的方法“didRegisterUserNotificationSettings”

// Register to receive notifications
[application registerForRemoteNotifications];

NSLog(@"The app is registered for the types: %@", notificationSettings);

返回:

The app is registered for the types: <UIUserNotificationSettings: 0x15e9e790; types: (none);>

提前致谢

最佳答案

这是因为通知设置已在系统设置中关闭。

关于ios - 从UIUserNotificationTypeNone传递给UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/26261503/