How to Save downloaded state of progress bar using AFNetworkig? - ios

Question

I use Table View and Embed In to Navigation make a custom cell and set a Progress bar and a downloading button on it. And i set multiple URLs and save all URLs in array and set those array on table view. I use AFNetworking to Downloading via URL. I set all methods on NSObject class and call that method on table view cell.
- (void)startDownload{
if(!self.isDownloading){
self.isDownloading = YES;
NSURL *url = [NSURL URLWithString:self.DownloadString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSString *fullPath = [NSTemporaryDirectory() stringByAppendingPathComponent:[url lastPathComponent]];
[operation setOutputStream:[NSOutputStream outputStreamToFileAtPath:fullPath append:NO]];
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
self.Progress = (float)((float)totalBytesRead/(float)totalBytesExpectedToRead);
NSLog(#"progress: %f",self.Progress);
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"RES: %#", [[[operation response] allHeaderFields] description]);
NSError *error;
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:&error];
if (error) {
NSLog(#"ERR: %#", [error description]);
} else {
// NSNumber *fileSizeNumber = [fileAttributes objectForKey:NSFileSize];
// long long fileSize = [fileSizeNumber longLongValue];
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"ERR: %#", [error description]);
}];
[operation start];
}
}
now I have a issue if downloading was start and I Press back button and again come to table view the progress Bar is again "0" Downloading Button is again available.
I want to save the state of my progress bar when ever cell dequeue and I go back to the navigation or came back. I want Preserve my Downloading state and my progress bar state.
Is any One knows how to Save state of my Progress bar when I download a big file the progress bar is running on tableview cell when I came back Progress states preserved.