问：

Can you help me to understand, how to use UIActivityIndicatorView+AFNetworking or
UIProgressView+AFNetworking. Do I need to create one more UIViewController and if yes, where do I need to implement it? have found out that I need to use
setProgressWithUploadProgressOfOperation or setAnimatingWithStateOfOperation, but I still need an example.

my code is:

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.responseSerializer = [AFJSONResponseSerializer serializer];

[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];

[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

[manager.requestSerializer setValue:@"" forHTTPHeaderField:@""];

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

[manager GET:@"blablabla" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

    // 3

    //[self.view setAnimatingWithStateOfOperation:operation];

    NSLog(@"JSON: %@", responseObject);

    NSArray *carsList = responseObject[@"data"];

    [self showStream:carsList];

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

    // 4

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error"

                                                        message:[error localizedDescription]

                                                       delegate:nil

                                              cancelButtonTitle:@"Ok"

                                              otherButtonTitles:nil];

    [alertView show];

}];

答：

I guess, you want to show UIActivityIndicator while operation is loading. So you have to do something like this:

// your code

AFHTTPRequestOperation *operation = [manager GET:@"blablabla" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

    // even more code

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

    // and here

}];

UIActivityIndicatorView *indicatorView = [[UIActivityIndicatorView alloc] init];

indicatorView.frame = /*calculate frame here*/;

[self.view addSubView:indicatorView];

[indicatorView setAnimatingWithStateOfOperation:operation];