ios 推送权限判断逻辑处理

//    检查手机是否开启推送权限功能

-(void) checkCurrentNotificationStatus

{

    if (@available(iOS 10 , *))    //    手机系统是ios10.0及以上系统版本

    {

        [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {

            if (settings.authorizationStatus == UNAuthorizationStatusDenied)

            {

                // 没权限            }

        }];

    }

    else if (@available(iOS 8 , *))    //    手机系统是ios8.0及以上系统版本

    {

        UIUserNotificationSettings * setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

        if (setting.types == UIUserNotificationTypeNone) {

            // 没权限        }

    }

    else    {

        UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

        if (type == UIUserNotificationTypeNone)

        {

            // 没权限        }

    }

}

#pragma mark 没权限的弹窗

-(void) showAlrtToSetting

{

    UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"您还没有允许****权限" message:@"去设置一下吧" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction * cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

    }];

    UIAlertAction * setAction = [UIAlertAction actionWithTitle:@"去设置" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

        NSURL * url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];

        dispatch_async(dispatch_get_main_queue(), ^{

            if ([[UIApplication sharedApplication] canOpenURL:url]) {

                [[UIApplication sharedApplication] openURL:url];

            }

        });

    }];

    [alert addAction:cancelAction];

    [alert addAction:setAction];

    [self presentViewController:alert animated:YES completion:nil];

}