How to upload multiple images in ios? - ios

Question

I have tried this code to implement multiple images in iOS. Didn't work as I wanted:
NSString *BoundaryConstant = #"----------V2ymHFg03ehbqgZCaKO6jy";
// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = #"fileToUpload[]";
NSArray *arrayfile=[NSArray arrayWithObjects:FileParamConstant,FileParamConstant ,nil];
// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:#"http://jackson.amtpl.in/tranzop/api/customertest/postorder"];
// 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) {
[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]];
}
for (int i=0; i<upload_img_array.count; i++) {
NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:[upload_img_array objectAtIndex:0]],1); // add image data
// NSData *imageData = UIImageJPEGRepresentation([upload_img_array objectAtIndex:i], 1.0);
if (imageData) {
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"image%d.png\"\r\n", FileParamConstant,i] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: image/png\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]];
}
}
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// set

Answer 1

Use this:
-(void)uploadImages{
// image.finalImage - is image itself
// totalCount - Total number of images need to upload on server
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
NSDictionary *parameters = #{#"Key":#"Value",#"Key":#"Value"};
[manager POST:serverURL parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:UIImagePNGRepresentation(image.finalImage) name:#"ImageName" fileName:[[Helper getRandomString:8] stringByAppendingString:#".png"] mimeType:#"image/png"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:(NSData *)responseObject options:kNilOptions error:nil];
_uploadCounter+=1;
if(_uploadCounter<totalCount){
[self uploadImages];
}else {
NSLog(#"Uploading all images done");
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error");
}];
}
This tutorial will help you:
https://charangiri.wordpress.com/2014/09/22/how-to-upload-multiple-image-to-server/

Answer 2

try
//img_send is a UIImage with u want to send
NSData *imageData = UIImagePNGRepresentation(img_send);
str_img= [imageData base64EncodedStringWithOptions:0];
NSDictionary *post_dir = [[NSMutableDictionary alloc] init];
[post_dir setValue:str_img forKey:#"image_string"];
NSData *jsData = [NSJSONSerialization dataWithJSONObject:post_dir options:NSJSONWritingPrettyPrinted error:nil];
NSMutableData *data = [[NSMutableData alloc] init];
self.receivedData = data;
NSURL *url = [NSURL URLWithString:#"YOUR URL STRING"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[url standardizedURL]];
//set http method
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setValue:[NSString stringWithFormat:#"%d", [jsData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:jsData];
//initialize a connection from request
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
self.connection=connection;
//start the connection
[connection start];
NSHTTPURLResponse *response = nil;
NSError *error = nil;
NSData *respData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"~~~~~ Status code: %d", [response statusCode]);
});