Posting image to server using multipart file...

Posting image to server using multipart file...

we can use this method to post any type of file using multipart/*  ....


Add delegates in  .h  <UIImagePickerControllerDelegate, UINavigationControllerDelegate>

- (IBAction)profilePicChangeBtnAction:(id)sender {

    

    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    imagePickerController.delegate = self;

    [self presentViewController:imagePickerController animated:YES completion:nil];

}

// This method is called when an image has been chosen from the library or taken from the camera.

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

    //You can retrieve the actual UIImage

    profileImage = [info valueForKey:UIImagePickerControllerOriginalImage];

    dispatch_async(dispatch_get_main_queue(), ^{

        self.profilePicImageView.image = profileImage;

    });

    

    //Or you can get the image url from AssetsLibrary

    //    NSURL *path1 = [info valueForKey:UIImagePickerControllerReferenceURL];

    

//    NSData *compressedImageData=[self testData:profileImage];

//    DLog(@"compressedImageData ====>> %lu KB",compressedImageData.length/1024);

    

    [picker dismissViewControllerAnimated:YES completion:nil];

    

    NSString *path = [NSTemporaryDirectory() stringByAppendingPathComponent:@"upload-image.png"];

    NSData *imageData1 = UIImagePNGRepresentation(profileImage);

    //you can also use UIImageJPEGRepresentation(img 1); for jpegs

    [imageData1 writeToFile:path atomically:YES];

    

    NSString *boundary = [self generateBoundaryString];

    

    // configure the request

    NSMutableURLRequest *request;

    if (previously uploaded image id == nil ) {

    request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@""]];

    }else {

        NSString * urlString =  [NSString stringWithFormat:@"",previously uploaded image id];

        request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:urlString]];

    }

    [request setHTTPMethod:@"POST"];

    

    NSUserDefaults *authToken= [NSUserDefaults standardUserDefaults];

    NSString *authStr=[authToken valueForKey:@"authToken"];

    [request addValue:authStr forHTTPHeaderField:@"X-Authorization"];

    

    // set content type

    

    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];

    [request setValue:contentType forHTTPHeaderField: @"Content-Type"];

    

    // create body

    

    NSData *httpBody = [self createBodyWithBoundary:boundary parameters:@{} paths:@[path] fieldName:@"file"]; // provide path & field name as required.

    

    request.HTTPBody = httpBody;

    

    NSURLSession *session = [NSURLSession sharedSession];

   

    NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

        if (error) {

            NSLog(@"error = %@", error);

            return;

        }

        

        id result = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];

        

        NSLog(@"result =====> %@", result);

    }];

    [task resume];  

}

- (NSData *)createBodyWithBoundary:(NSString *)boundary

                        parameters:(NSDictionary *)parameters

                             paths:(NSArray *)paths

                         fieldName:(NSString *)fieldName {

    NSMutableData *httpBody = [NSMutableData data];

    

    // add params (all params are strings)

    

    [parameters enumerateKeysAndObjectsUsingBlock:^(NSString *parameterKey, NSString *parameterValue, BOOL *stop) {

        [httpBody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

        [httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", parameterKey] dataUsingEncoding:NSUTF8StringEncoding]];

        [httpBody appendData:[[NSString stringWithFormat:@"%@\r\n", parameterValue] dataUsingEncoding:NSUTF8StringEncoding]];

    }];

    

    // add image data

    

    for (NSString *path in paths) {

        NSString *filename  = [path lastPathComponent];

        NSData   *data      = [NSData dataWithContentsOfFile:path];

        NSString *mimetype  = [self mimeTypeForPath:path];

        

        [httpBody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

        [httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n", fieldName, filename] dataUsingEncoding:NSUTF8StringEncoding]];

        [httpBody appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n", mimetype] dataUsingEncoding:NSUTF8StringEncoding]];

        [httpBody appendData:data];

        [httpBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

    }

    

    [httpBody appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    

    return httpBody;

}

- (NSString *)mimeTypeForPath:(NSString *)path {

    // get a mime type for an extension using MobileCoreServices.framework

    

    CFStringRef extension = (__bridge CFStringRef)[path pathExtension];

    CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extension, NULL);

    assert(UTI != NULL);

    

    NSString *mimetype = CFBridgingRelease(UTTypeCopyPreferredTagWithClass(UTI, kUTTagClassMIMEType));

    assert(mimetype != NULL);

    

    CFRelease(UTI);

    

    DLog(@"mimetype +++++++>>>> %@",mimetype);

    return mimetype;

}

- (NSString *)generateBoundaryString {

    return [NSString stringWithFormat:@"Boundary-%@", [[NSUUID UUID] UUIDString]];

}