AFNetworking 进度方法

Posted 2023-02-24

【中文标题】AFNetworking 进度方法

【英文标题】：AFNetworking Progress method

【发布时间】：2016-10-14 13:58:10

【问题描述】：

我正在使用AFNetworking 发出HTTP 请求：

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager GET:url parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) 
    int t=0;
    t++;
 success:^(NSURLSessionTask *task, id responseObject) 
    NSMutableArray * items = [self parseSearchCategoryWithData:responseObject];
    finishBlock(items);
 failure:^(NSURLSessionTask *operation, NSError *error) 
    finishBlock(nil);
];

我想获取 url GET 的进度，但没有调用 Progress 块。知道可能是什么问题吗？

【问题讨论】：

How to get download progress in AFNetworking 2.0?的可能重复

【参考方案1】：

我建议使用以下模板来加载带有进度的图像：

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFImageResponseSerializer serializer];

manager.requestSerializer.cachePolicy = NSURLRequestReloadIgnoringLocalAndRemoteCacheData;

[manager GET:url.absoluteString parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) 

     float progress = downloadProgress.fractionCompleted;

 success:^(NSURLSessionTask *task, id responseObject) 
    UIImage *responseImage = responseObject;

 failure:^(NSURLSessionTask *operation, NSError *error) 
    NSLog(Failed with error: %@", error);
];

还有这个下载进度视频的模板：

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) 
        float progress = downloadProgress.fractionCompleted;

     destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) 

        NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
        return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];

     completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) 

        if(error) 
            NSLog(Error %@", error);
        
        else 
             NSString *path = filePath.relativeString;
           
    
];

[downloadTask resume];

我希望这会有所帮助！