Can not show progress bar while uploading image to server - ios

Question

I desperately need to show a progress bar or an activity indicator , because image uploading takes time. Below is my code, I cannot figure it out why progress bar is not showing. I have used ProgressHUD.
[ProgressHUD show:#"Please wait..."];
NSDictionary *params =#{ #"name":self->Name.text, #"contact_no":self->ContactNo.text,#"email_id":self->EmailId.text,#"s_date":Date,#"s_time":Time,#"streat":Street,#"city":City,#"state":State};
NSData *uploadData = Data;
NSString *urlString = [NSString stringWithFormat:#"http://fsttest.com/iosservice/supremo/add_supremo"];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSString *kNewLine = #"\r\n";
NSMutableData *body = [NSMutableData data];
for (NSString *name in params.allKeys) {
NSData *values = [[NSString stringWithFormat:#"%#", params[name]] dataUsingEncoding:NSUTF8StringEncoding];
[body appendData:[[NSString stringWithFormat:#"--%#%#", boundary, kNewLine] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"", name] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"%#%#", kNewLine, kNewLine] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:values];
[body appendData:[kNewLine dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"file_name\"; filename=\"test\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:uploadData]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
[request setHTTPBody:body];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

Answer 1

choice 1
as your way continution add the delegate and check like
- (void)connection:(NSURLConnection *)connection
didSendBodyData:(NSInteger)bytesWritten
totalBytesWritten:(NSInteger)totalBytesWritten
totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite {
float progress = [[NSNumber numberWithInteger:totalBytesWritten] floatValue];
float total = [[NSNumber numberWithInteger: totalBytesExpectedToWrite] floatValue];
NSLog(#"progress/total %f",progress/total);
}
choice 2
modify your request from sendSynchronousRequest to sendAsynchronousRequest for e,g
// NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
// NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
call the method like
// set URL
[request setURL:[NSURL URLWithString:baseUrl]];
// add your progress bar here
[ProgressHUD show:#"Please wait..."];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
[ProgressHUD dismiss];
if ([httpResponse statusCode] == 200) {
NSLog(#"success");
if ([data length] > 0 && error == nil)
[delegate receivedData:data];
// hide the progress bar here
}
}];

Answer 2

You can use AFNetworking for easily upload image. here click on AFNeworking Download. Same as your code upload images.
-(void)imageUpload
{
#try
{
[self progressViewDispaly];
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager.requestSerializer setTimeoutInterval:600.0];
[manager POST:YOUR_WEB_SERVICE_NAME parameters:YOUR_REQUEST_PARA constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData)
{
for(NSString *strImageName in ImageArray) //if multiple images use image upload
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:strImageName];
if (path != nil)
{
NSData *imageData = [NSData dataWithContentsOfFile:path];
[formData appendPartWithFileData:imageData name:[NSString stringWithFormat:#"job_files[]"] fileName:[NSString stringWithFormat:#"%#",[[strImageName componentsSeparatedByString:#"/"] lastObject]] mimeType:#"image/jpeg"];
}
else
{
}
}
} progress:^(NSProgress * _Nonnull uploadProgress)
{
[self performSelectorInBackground:#selector(makeAnimation:) withObject:[NSString stringWithFormat:#"%f",uploadProgress.fractionCompleted]];
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
[SVProgressHUD dismiss];
[_progressView removeFromSuperview];
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
} #catch (NSException *exception)
{
NSLog(#"%#",exception.description);
}
}
-(void)makeAnimation:(NSString *)str
{
float uploadProgress = [str floatValue];
[_progressView setProgress:uploadProgress];
}
-(void)progressViewDispaly
{
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:#"statusBarWindow"] valueForKey:#"statusBar"];
_progressView = [[UIProgressView alloc] init];//WithProgressViewStyle:UIProgressViewStyleBar];
_progressView.frame = CGRectMake(0, 0, CGRectGetWidth(statusBar.frame),20);
_progressView.backgroundColor = [UIColor blueColor];
_progressView.progressTintColor = [UIColor whiteColor];
[statusBar addSubview:_progressView];
}