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sendAsynchronousRequest:queue:completionHandler: を使用しています: ファイルをアップロードします (このネイティブ メソッドを使用した直接呼び出しを優先して、古いサード パーティ ライブラリを一部削除しました。NSURLRequest と辞書はそのまま残しています)。ファイルのプッシュがどのように終了したかを伝える方法がわかりません。私は、定期的に呼び出され、渡されたパラメータを調べることができるcompletionHandlerで考えますが、必要なものが含まれていないようです。 

- (void)sendToServer:(NSString*)url asset:(MYAsset *)asset path:(NSString *)file completion:(MYUploaderBoolBlock)completion{
    NSDictionary *uploadParameters = asset.s3Info;
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:uploadParameters[@"my_url"]]];
    request.HTTPMethod = @"PUT";
    request.timeoutInterval = 300;
    [request addValue:uploadParameters[@"date"] forHTTPHeaderField:@"Date"];
    [request addValue:uploadParameters[@"authorization"] forHTTPHeaderField:@"Authorization"];
    [request addValue:uploadParameters[@"content_type"] forHTTPHeaderField:@"Content-Type"];
    [request addValue:asset.md5 forHTTPHeaderField:@"Content-MD5"];
    [request addValue:@"public-read" forHTTPHeaderField:@"x-amz-acl"];
    [request addValue:[@(asset.sizeInKB) stringValue] forHTTPHeaderField:@"Content-Length"];
    request.HTTPBodyStream = [NSInputStream inputStreamWithFileAtPath:file];

    DDLogInfo(@"Uploading %@ to server", uploadParameters[@"my_url"]);
    DDLogInfo(@"HTTP Headers: %@", [request allHTTPHeaderFields]);

    [NSURLConnection sendAsynchronousRequest:request
                                       queue:self.queue
                           completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){
                               if ([data length] > 0 && error == nil){
                                   // I am expecting that this can be used to detect progress of the file upload
                                   // as well as completion?
                                   NSLog(@"received data %d/%d =%f%", data.length, response.expectedContentLength, data.length/(float)response.expectedContentLength);
                                   if(data.length == response.expectedContentLength){
// This never fires because expectedContentLength is always -1
                                       completion(YES);
                                   }
                               }
                               else if ([data length] == 0 && error == nil){
                                   NSLog(@"reply empty");
                               }
                               else if (error != nil && error.code == -1001){
                                   NSLog(@"timed out");
                               }
                               else if (error != nil){
                                   NSLog(@"Error %@", error.localizedDescription);
                                   completion(NO);
                               }
                           }];

}
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2 に答える 2

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According to the documentation, the completion handler block is called once at the end of the asynchronous send.
if error is nil, the operation succeeded (not sure why you test the data length).

于 2013-04-26T21:39:41.040 に答える