Question

男人，难倒在这一个。尝试使用AFNetworking下载文件并且我能做的最好的事情是捕获downloadProgressBlock中的进度字节。我已经尝试了许多不同的AFNetworking分叉，现在我又回到了最新版本。看起来曾经AFHTTPRequestOperation被修改为也包括NSURLResponse但在最新版本中已经消失了。并且，根据下面的代码，永远不会调用“成功”块。我得到下载字节的日志，然后调用^ complete。成功和错误从未被称为。

对此的任何指导都很棒。我无法弄清楚返回数据的位置以及如何让它在其上使用NSFileManager？我需要下载文件，而不是写图像流等等。

编辑：我还尝试通过覆盖 - （void）连接捕获数据：didReceiveData，如文档中所建议的那样，但没有做任何事情。

//网址为http://mydomain.com/somezip.zip

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@", url]]];

AFHTTPRequestOperation *operation = [AFHTTPRequestOperation HTTPRequestOperationWithRequest:request success:^(id object) {

    NSLog(@"hey, some success!");

} failure:^(NSHTTPURLResponse *response, NSError *error) {

    NSLog(@"%@", error);

}];


[operation setDownloadProgressBlock:^(NSInteger bytesRead, NSInteger totalBytesRead, NSInteger totalBytesExpectedToRead) {

    // callback is sent in and works great.  Just outputting to the console at the moment
    SEL callme = NSSelectorFromString(callback);
    [sender performSelectorOnMainThread:callme withObject:[NSNumber numberWithInt:bytesRead] waitUntilDone:NO];

}];

[operation setCompletionBlock:^{
    NSLog(@"operation complete");
}];

NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease];
[queue addOperation:operation];

Answer 1

您可以简单地使用AFNetworking中包含的此功能，甚至将其保存到磁盘 - 请注意operation.outputStream：

NSMutableURLRequest* rq = [api requestWithMethod:@"GET" path:@"YOUR/URL/TO/FILE" parameters:nil];
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:rq] autorelease];

NSString* path=[@"/PATH/TO/APP" stringByAppendingPathComponent: imageNameToDisk];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

    NSLog(@"SUCCCESSFULL IMG RETRIEVE to %@!",path)

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

    // Deal with failure
}];

编辑：missed

[operation start];

编辑：...or if you use an AFHTTPClient * apiClient :

// [apiClient enqueueHTTPRequestOperation:operation];

AFNetworking - 使用AFHTTPRequestOperation下载文件？

1 个答案: