【iOS】OC-AFNetworking 2.0 跟蹤文件上傳進度

我是較新的 AFNetworking 2.0。使用下面的代碼片斷，我已經可以成功地將一張照片上傳到個人 url。我想要跟蹤的增量上載進度，但我找不到這樣作 2.0 版的示例。個人應用程序是 iOS 7，因此我已經選擇了爲 AFHTTPSessionManager。

任何人均可以提供如何修改這段上傳進度進行跟蹤的示例？

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"myimage.jpg"], 1.0);

[manager POST:@"http://myurl.com" parameters:dataToPost constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileData:imageData name:@"attachment" fileName:@"myimage.jpg" mimeType:@"image/jpeg"];
} success:^(NSURLSessionDataTask *task, id responseObject) {
    NSLog(@"Success %@", responseObject);
} failure:^(NSURLSessionDataTask *task, NSError *error) {
    NSLog(@"Failure %@, %@", error, [task.response description]);
}];

解決方法 1:

接口的 AFHTTPSession 不能提供一種方法來設置進度塊。相反，必須進行如下操做：

// 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];

此外，你不須要讀取圖像經過 UIImage ，而後壓縮它再次使用 JPEG 得到 NSData 。只是使用 +[NSData dataWithContentsOfFile:] ，從您捆綁直接讀取該文件。