How to send number of images to server using JSON Array in iOS

Question

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

NSString *imagePostUrl = [NSString stringWithFormat:@"www.abc.com?"];
NSDictionary *parameters = @{@"device_id":string,@"device_phone":[[NSUserDefaults standardUserDefaults] objectForKey:@"SerialNumber"]};

NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:imagePostUrl parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileData:data name:@"uploaded_file" fileName:ext mimeType:@"image/jpeg"];
}];

AFHTTPRequestOperation *op = [manager HTTPRequestOperationWithRequest:request success: ^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"response: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];
op.responseSerializer = [AFHTTPResponseSerializer serializer];
[[NSOperationQueue mainQueue] addOperation:op];

I am getting images from image in images path in mobile , I am sending all the images with parameters to the server. Here sending images are one by one with parameters to the server hoe can i send this . How can I achieve this? Please help me. Thanks in advance.

We cannot help unless you show the code you wrote. And we need to know what error you received when it doesn't work. Also, when is the server-side written in? Are you using FTP or HTTP as transport? You need a lot more details in your question for anyone to help you. — Black Frog, Apr 18 '15 at 12:23

score 0 · Answer 1 · edited May 23 '17 at 11:59

A normal way to upload images is to use a multi-part form encoding. Read this answer about uploading images using multi-part form data. If you use AFNetworking, it could be done with Multi-Part Request.

With JSON you could use a simple base64 encoded strings:

UIImage *image  = [[UIImage alloc] init]; //your image here
NSData *data = UIImagePNGRepresentation(image);
NSString *base64string = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

Do this for every image and send an array of strings in JSON format. On the server side you need to decode this strings to images. But it is not a good solution.

score 0 · Accepted Answer · edited Apr 18 '15 at 13:50

Yes,

I would suggest the same.

AFNetworking will do that for you like this:

-(void)uploadPhoto{
    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://server.url"]];

    NSData *imageData = UIImageJPEGRepresentation(self.avatarView.image, 0.5);

    NSDictionary *parameters = @{@"username": self.username, @"password" : self.password};

    AFHTTPRequestOperation *op = [manager POST:@"rest.of.url" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        //do not put image inside parameters dictionary as I did, but append it!
        [formData appendPartWithFileData:imageData name:paramNameForImage fileName:@"photo.jpg" mimeType:@"image/jpeg"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Success: %@ ***** %@", operation.responseString, responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@ ***** %@", operation.responseString, error);
    }];
    [op start];
}

Your welcome Guru. :) – Muhammad Ahsan Apr 26 '15 at 10:44 — Muhammad Ahsan, Apr 26 '15 at 10:44

How to send number of images to server using JSON Array in iOS

2 Answers2