How to post multiple images using multipart / formdata in objective c - ios

Question

I am trying to post two images to an url using multipart post request in Objective C , From my code I can able to send only one image, How to send two images to the url, using multipart / form data I have tried so many example for this bur I did not get the result I want
-(void)processPostMultipartRequestNew{
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
NSString *urlStr = [self.dataModel.apiUrl
stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
urlStr = [urlStr
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
urlStr= [urlStr stringByReplacingOccurrencesOfString:#"+" withString:#"%2B"];
NSURL *reqUrl = [NSURL URLWithString:urlStr];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:reqUrl];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSDictionary *requestBody = self.dataModel.requestParams2;
UIImage *imageToUpload = [requestBody objectForKey:keyUploadImage];
NSDictionary *requestBody2 = self.dataModel.requestParams;
UIImage *imageToUpload2 = [requestBody2 objectForKey:keyUploadImage];
if(requestBody){
NSData *imageData = UIImageJPEGRepresentation(imageToUpload, 0);//no compression by default
NSData *imageData2 = UIImageJPEGRepresentation(imageToUpload2, 0);
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: attachment; name=\"uploadedfile1\"; filename=\".jpeg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: attachment; name=\"uploadedfile2\"; filename=\".jpeg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[NSData dataWithData:imageData2]];
[body appendData:[#"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// Text parameter1
NSString *param1 = #"111";
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"SyncId\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:param1] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
}
[request setHTTPShouldHandleCookies:NO];
[request setHTTPMethod:REQUEST_TYPE_POST];
[request setTimeoutInterval:60*4];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
NSLog(#"completionHandler with response:%#",[NSHTTPURLResponse localizedStringForStatusCode:[(NSHTTPURLResponse*)response statusCode]]);
NSLog(#"reponse: %ld",(long)[(NSHTTPURLResponse*)response statusCode]);
NSInteger status = [(NSHTTPURLResponse*)response statusCode];
if(error){
NSLog(#"http request error: %#", error.localizedDescription);
// handle the error
}
else{
if (status == 201){
// handle the success
}
else{
NSLog(#"error");
} // handle the error
}
if(!data || data == nil)
return ;
NSLog(#"%#",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);
NSDictionary *resultDict =(NSDictionary *) [NSJSONSerialization
JSONObjectWithData:data options:NSJSONReadingAllowFragments
error:&error];
//NSDictionary *resultDict =(NSDictionary *) [NSJSONSerialization JSONObjectWithStream:data options:kNilOptions error:&error];
self.dataModel.responseData =resultDict;
NSLog(#"error is %#",error);
NSLog(#"data is %#",data);
{
if(!data || data == nil)
return ;
NSLog(#"%#",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);
//for failed case
if(error || error != nil){
self.dataModel.responseFailed = YES;
self.dataModel.error = error;
NSLog(#"Result in error case %#",[[error userInfo] objectForKey:#"NSDebugDescription"]);
[self.reciever performSelectorOnMainThread:self.callBack withObject:self.dataModel waitUntilDone:YES];
}
else{
self.dataModel.responseFailed = NO;
self.dataModel.error = nil;
NSString *response = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if(!([response rangeOfString:#".jpg"].location==NSNotFound))
{
NSString *res=[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
self.dataModel.responseData =res;
[self.reciever performSelectorOnMainThread:self.callBack withObject:self.dataModel waitUntilDone:YES];
}
}
}
self.executing = NO;
[self setFinishedState:YES];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
[self.reciever performSelectorOnMainThread:self.callBack withObject:self.dataModel waitUntilDone:YES];
}];
}
Is this a right way to do? if not how can I get success in this. Thanks in advance.

Answer 1

Yes you can like this
Edit
///////////////////////////////
// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:#"ios" forKey:#"device_type"];
[_params setObject:#"user" forKey:#"type"];
[_params setObject:"iddddd" forKey:#"user_id"];
// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = #"----------V2ymHFg03ehbqgZCaKO6jy";
// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:#"http........"];
// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod:#"POST"];
// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: #"Content-Type"];
// post body
NSMutableData *body = [NSMutableData data];
// add params (all params are strings)
for (NSString *param in [_params allKeys]) {
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"%#\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}
// add txt data
/////////////////////////////
NSArray *allImagesData= #[UIImagePNGRepresentation(imageToUpload) ,UIImagePNGRepresentation(imageToUpload2)];
NSLog(#"files array before %#", allImagesData);
for (int i=0; i<[allImagesData count]; i++)
{
NSString*filename=[NSString stringWithFormat:#"image%d.jpeg",i+1];
NSString* FileParamConstant = [NSString stringWithFormat:#"image%d",i+1];
NSData *imageData = allImagesData[i];
if (imageData)
{
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"%#\"\r\n", FileParamConstant,filename] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:imageData];
[body appendData:[[NSString stringWithFormat:#"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
}

Answer 2

U can do like this:
-(void)PostUrlCall_Multipart_Image:(NSString *)IN_URL Param:(NSDictionary*)IN_Param Image:(UIImage *)image
{
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"application/json"];
[manager POST:IN_URL parameters:IN_Param constructingBodyWithBlock:^(id<AFMultipartFormData> formData){
[formData appendPartWithFileData:UIImageJPEGRepresentation(image, 1.0) name:#"image" fileName:#"image" mimeType:#"image/jpeg"];
}
progress:nil
success:^(NSURLSessionDataTask *task, id responseObject) {
m_Status=1;
self.dic_Response = (NSDictionary *)responseObject;
[[NSNotificationCenter defaultCenter] postNotificationName:m_strPostMsg object:self];
}
failure:^(NSURLSessionTask *operation, NSError *error){
m_Status=0;
self.dic_Response=[[NSMutableDictionary alloc]init];
// [self.dic_Response setValue:#[Time_Out_Msg] forKey:#"#[Time_Out_Msg]"];
NSLog(#"Error %#",error);
[[NSNotificationCenter defaultCenter] postNotificationName:m_strPostMsg object:self];
}];
}