iOS应用内跳转系统推送设置页

#pragma mark - 是否开启APP推送
/**是否开启推送*/
- (BOOL)isSwitchAppNotification {
    if ([UIDevice currentDevice].systemVersion.doubleValue >= 10.0) {
        __block BOOL result = NO;
        //异步线程中操作是否完成
        __block BOOL inThreadOperationComplete = NO;
        [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
            if (settings.authorizationStatus == UNAuthorizationStatusDenied) {
                result = NO;
            }else if (settings.authorizationStatus == UNAuthorizationStatusNotDetermined) {
                result = NO;
            }else if (settings.authorizationStatus == UNAuthorizationStatusAuthorized) {
                result = YES;
            }else {
                result = NO;
            }
            inThreadOperationComplete = YES;
        }];
        
        while (!inThreadOperationComplete) {
            [NSThread sleepForTimeInterval:0];
        }
        return result;
    }
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
    else if ([UIDevice currentDevice].systemVersion.doubleValue >= 8.0)
    {
        UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];
        if (UIUserNotificationTypeNone != setting.types) {
            return YES;
        }else {
            return NO;
        }
        
    }else
    {
        UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
        if(UIRemoteNotificationTypeNone != type) {
            return YES;
        }else {
            return NO;
        }
    }
}

/// 进入前台监听

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.navigationItem.title = @"通知管理";
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(appBecomeActive:) name:UIApplicationDidBecomeActiveNotification object:nil];
    [self setupMainUI];
    self.swt.on = [self isSwitchAppNotification];
}


#pragma mark - NSNotification
- (void)appBecomeActive:(NSNotification *)note {
    self.swt.on = [self isSwitchAppNotification];
}

参考

https://www.jianshu.com/p/16d2cdefb9cd