Question

我想使用AFNetworking的AFHTTPSessionManager仅在Wifi可用时对网络服务器实施上传数据操作（例如，后期操作），即使蜂窝网络可用，操作也应排队。我想我需要使用AFNetworkReachabilityManager。但在AFNetworking的github中，它只显示了如何使用AFHTTPRequestOperationManager和manager.operationQueue。

因此，我想询问我是否可以使用AFHTTPSessionManager及其operationQueue

来执行类似的操作

以下是我对一些代码片段的想法，这样做是否有意义？

AppDelegate.m

@interface AppDelegate ()
@property (strong, nonatomic) NSURLSession *session;
@property (strong, nonatomic) NSMutableURLRequest *request;
@property (strong, nonatomic) AFHTTPSessionManager *manager;
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [self config_sessionManager];
    [self config_request];

    return YES;
}

- (void)config_sessionManager {

    NSURL *baseURL = [NSURL URLWithString:TargetURL];
    NSURLSessionConfiguration *config = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:kSCIdenitifer];
    self.manager = [[AFHTTPSessionManager alloc] initWithBaseURL:baseURL sessionConfiguration:config];

    //actually, what is this operationQueue? I don't quit understand it
    //sometimes, I see `mainQueue` was used,
    //e.g `[[NSOperationQueue mainQueue] addOperation:op]` in GET example in the Github
    NSOperationQueue *operationQueue = self.manager.operationQueue;

    [self.manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        switch (status) {
            case AFNetworkReachabilityStatusReachableViaWiFi:
                [operationQueue setSuspended:NO];
                break;

            default:
                [operationQueue setSuspended:YES];
                break;
        }
    }];

    [self.manager.reachabilityManager startMonitoring];
}

- (void)config_request {
    self.request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:kTargetURL]];
    self.request.HTTPMethod = @"POST";
    self.request.HTTPBody = [self.m_str dataUsingEncoding:NSUTF8StringEncoding];
}

- (void)run_task {

    NSURLSessionUploadTask * task = [self.manager uploadTaskWithStreamedRequest:self.request progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
        if (!error) {
            //ok, no error
            NSLog(@"upload data successfully!!!!");
        }
        else {
            //there is error
            NSLog(@"error with uploading data!!!!");
        }
    }];
    [task resume];

}


- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
    [self run_task];
    completionHandler(UIBackgroundFetchResultNewData);
}

@end

所以，如果我这样做，如果Wifi不可用，我会在会话管理器中排队任务config_task吗？如果以后的Wifi再次可用，那么任务是否会恢复并且数据是我想要的？

AFNetworking仅在WiFi可用时执行后台任务

0 个答案: