I am trying to download file from server using afnetworking from iPad.
I can successfully download file. But, strangely, my totalBytesExpectedToRead is always -1 although totalBytesRead is correct. Where did I make mistake?
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead)
{
}
Whole code is here.
-(void)fileDownload : (NSString *)pathToDownload : (NSString *)fileExt
{
hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.mode = MBProgressHUDModeAnnularDeterminate;
hud.labelText=@"Downloading...";
NSLog(@"fileDownload and pathToDownload is %@",pathToDownload);
NSArray *parts = [pathToDownload componentsSeparatedByString:@"\\"];
NSString *fileName = [NSString stringWithFormat:@"%@",[parts objectAtIndex:[parts count]-1]];
if([fileExt isEqualToString:@"pdf"])
{
fileNameForAllThreeFile=[fileName stringByDeletingPathExtension];
}
NSLog(@"fileName is %@",fileName);
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@",IP_ADDRESS,download_recording]];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
[httpClient setAuthorizationHeaderWithUsername:usernameForAuth password:passwordForAuth];
NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:
pathToDownload,@"file",
nil];
NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:download_recording parameters:parameters];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:fileName];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSString *responseStr = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(@"Request Successful in fileDownload, response '%@'", responseStr);
NSLog(@"Successfully downloaded file to %@", path);
[self messageDisplay:@"File download complete" :[NSString stringWithFormat:@"%@ download is now complete.",fileName]];
} failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
NSLog(@"Error in retrieveFromCustomServer: %@", error.localizedDescription);
[self performSelectorInBackground:@selector(hideHUDInBackground) withObject:nil];
}];
[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead)
{
//do something in this line with the calculation to cell
// float progress = (float)totalBytesRead / totalBytesExpectedToRead;
NSLog(@"Downloaded %lld of %lld bytes", totalBytesRead, totalBytesExpectedToRead);
float perCent = totalBytesRead / (float)totalBytesExpectedToRead;
hud.progress = perCent ;
NSLog(@"Percent is %d and in float is %f",(int)(perCent *100),perCent);
}];
[operation start];
}
totalBytesExpectedToRead
is -1 if the Content-Length
HTTP header isn't provided by the server. See RFC 2616, section 14.13.
You should either add this header to your server, or handle -1 by showing a UIActivityIndicator instead of a UIProgressView.
Or, in your case, using MBProgressHUD:
hud.mode = MBProgressHUDModeIndeterminate;