How to show ProgressBar With AFNetworking AFHTTPRequestOperationManager - ios

Question

I am trying to show the Progress Bar as I download a JSON from a url. The JSON is downloading correctly but I am not sure how to show the Progress Bar. I have tried using UIProgressView but it does not display on the screen. Any suggestions would be appreciated.
CGFloat width = [UIScreen mainScreen].bounds.size.width;
CGFloat height = [UIScreen mainScreen].bounds.size.height;
CGRect rect = CGRectMake(width/2, height/2, width/5, height/5);
UIProgressView *myProgressView = [[UIProgressView alloc]initWithFrame:rect];
myProgressView.progressViewStyle = UIProgressViewStyleBar;
[self.view addSubview:myProgressView];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:#"https:urlWithJson" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead)
{
myProgressView.progress = (float)totalBytesRead / totalBytesExpectedToRead;
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"operation Completed");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"ERROR");
}];
[operation start];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"timeout Error: %#", error);
}];

Answer 1

You set the download-progress-block inside the success block, which is a bit too late ;)
Try this:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestOperation *operation = [manager GET:#"https:urlWithJson" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Complete");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
myProgressView.progress = (float)totalBytesRead / totalBytesExpectedToRead;
}];

Answer 2

Simple solution for Swift:
let progress: UIProgressView? //for example, reference to IBOutlet
let manager = AFHTTPRequestOperationManager()
let operation = manager.POST(query, parameters: parameters, constructingBodyWithBlock: { multipartData in
//do sth with your multipartData
}, success: { operation, response in
//success
}) { operation, error in
//failure
}
progress?.setProgressWithUploadProgressOfOperation(operation!, animated: true)
You do nothing more. This is enough to show progress on your view.