AFNetworking 2.0 track file upload progress

Question

I am relatively new to AFNetworking 2.0. Using the code snippet below, I\'ve been able to successfully upload a photo to my url. I would like to track the incremental uploa

Answer 1

The interface of AFHTTPSession doesn't provide a method to set a progress block. Instead, you'll have to do the following:

// 1. Create `AFHTTPRequestSerializer` which will create your request.
AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];

// 2. Create an `NSMutableURLRequest`.
NSMutableURLRequest *request =
    [serializer multipartFormRequestWithMethod:@"POST" URLString:@"http://www.myurl.com"
                                    parameters:dataToPost
                     constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
                       [formData appendPartWithFileData:imageData
                                                   name:@"attachment"
                                               fileName:@"myimage.jpg"
                                               mimeType:@"image/jpeg"];
                     }];

// 3. Create and use `AFHTTPRequestOperationManager` to create an `AFHTTPRequestOperation` from the `NSMutableURLRequest` that we just created.
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestOperation *operation =
    [manager HTTPRequestOperationWithRequest:request
                                     success:^(AFHTTPRequestOperation *operation, id responseObject) {
                                       NSLog(@"Success %@", responseObject);
                                     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                       NSLog(@"Failure %@", error.description);
                                     }];

// 4. Set the progress block of the operation.
[operation setUploadProgressBlock:^(NSUInteger __unused bytesWritten,
                                    long long totalBytesWritten,
                                    long long totalBytesExpectedToWrite) {
  NSLog(@"Wrote %lld/%lld", totalBytesWritten, totalBytesExpectedToWrite);
}];

// 5. Begin!
[operation start];

In addition, you don't have to read the image via UIImage and then compress it again using JPEG to get an NSData. Just use +[NSData dataWithContentsOfFile:] to read the file directly from your bundle.

Answer 2

It's true the interface of AFHTTPSessionManager doesn't provide a method to track the upload progress. But the AFURLSessionManager does.

As a inherited class of AFURLSessionManager AFHTTPSessionManager can track upload progress like this:

NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer]  multipartFormRequestWithMethod:@"POST" URLString:kUploadImageURL parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileData:UIImageJPEGRepresentation(image, 0.5) name:@"uploadFile" fileName:@"image" mimeType:@"image/jpeg"];
} error:nil];

NSProgress *progress;
NSURLSessionDataTask *uploadTask = [[AFHTTPSessionManager sharedManager] uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
    if (!error) {
        //handle upload success
    } else {
        //handle upload failure
    }
}];
[uploadTask resume];
[progress addObserver:self forKeyPath:@"fractionCompleted" options:NSKeyValueObservingOptionNew context:NULL];

outside

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if ([keyPath isEqualToString:@"fractionCompleted"] && [object isKindOfClass:[NSProgress class]]) {
        NSProgress *progress = (NSProgress *)object;
        //progress.fractionCompleted tells you the percent in CGFloat
    }
}

Here is method 2(updated)

use KVO to track progress means self need to be alive during observation. The more elegant way is AFURLSessionManager's method setTaskDidSendBodyDataBlock, like this:

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager setTaskDidSendBodyDataBlock:^(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {
    //during the progress
}];

NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer]  multipartFormRequestWithMethod:@"POST" URLString:kUploadImageURL parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileData:UIImageJPEGRepresentation(image, 0.5) name:@"uploadFile" fileName:@"image" mimeType:@"image/jpeg"];
} error:nil];

NSURLSessionDataTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
    if (!error) {
        //handle upload success
    } else {
        //handle upload failure
    }
}];
[uploadTask resume];