How to Post data in iOS?

Question

I am doing an instagram appliaction. In that I need to post like on Images. I am not able to post . I am following instgram API. We need to use following url

https://api.instagram.com/v1/media/{media-id}/likes

We need to set media id like

https://api.instagram.com/v1/media/649114513807113248_1032025382/likes

media id = 649114513807113248_1032025382

My code to post:

NSString *urlString = [NSString            stringWithFormat:@"https://api.instagram.com/v1/media/649114513807113248_1032025382/likes"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]
                                                    cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];


[request setHTTPMethod:@"POST"];
NSURLConnection *connection= [[NSURLConnection alloc] initWithRequest:request
                                                             delegate:self];
[connection start];

But like is not posting. Can anyone help me ?

Did you implement the NSURLConnection delegates? Are you getting a response? What does it say? — Anil, Feb 10 '14 at 06:58
Ya I have implemented didReceiveData() delegate but its showing some numbers , no valid data — deepti, Feb 10 '14 at 07:00
Can u please convert the data into string and log it then show here NSString *dataString = [[NSString alloc] initWithData:yourData encoding:NSUTF8StringEncoding]; NSLog(@"%@",); — LML, Feb 10 '14 at 07:08
That is a NSData output. Convert that to a NSString or NSDictionary. Here are a few links: http://stackoverflow.com/questions/12603047/how-to-convert-nsdata-to-nsdictionary http://stackoverflow.com/questions/2467844/convert-utf-8-encoded-nsdata-to-nsstring — Anil, Feb 10 '14 at 07:10
@Anil It is giving null when I am converting NSData to NSDictionary. — deepti, Feb 10 '14 at 07:17
@deepti convert it into string as I mentioned above.or your response is something other than string data? — LML, Feb 10 '14 at 07:24
@Anil Thanks for your reply. Now I got the response . Actually AccessToken was missing on that. Now it is working fine. — deepti, Feb 10 '14 at 08:47

score 1 · Answer 1 · answered Feb 10 '14 at 07:09

1

You can post your data in better way using AFNetworking framework. Samples are also provided on github.

http://afnetworking.com/

answered Feb 10 '14 at 07:09

Vinay Bagale

2,361
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codercat · Answer 2 · 2014-02-10T07:22:55.033

MGInstagram and DMActivityInstagram is a iOS Utility for posting Images to Instagram from your app.

// Uses our instagram instance to do a request
- (void) postMessage:(NSString *)message mediaId:(NSString *)mediaId {
    NSString* methodName = [NSString stringWithFormat:@"media/%@/comments", mediaId];
    NSMutableDictionary* params = @{"text" : message};
    [m_instagram requestWithMethodName:methodName params:params httpMethod:@"POST" delegate:self];
}

// IGRequestDelegate method that is called once we get a response
- (void)request:(IGRequest *)request didLoad:(id)result {
  // post message was ok
}
- (void)request:(IGRequest *)request didFailWithError:(NSError *)error {
  // post message fails
}

Reference from https://github.com/crino/instagram-ios-sdk/issues/27

if you are share the images to social network use below link it have sample app with tutorial

share-an-image-on-instagram-in-ios/

score 1 · Answer 3 · answered Feb 10 '14 at 08:33

better to use AFNetworking for post, bellow is a sample , please have a look

-(void)commandWithParams:(NSMutableDictionary*)params onCompletion:(JSONResponseBlock)completionBlock
{
    NSMutableURLRequest *apiRequest = 
        [self multipartFormRequestWithMethod:@"POST" 
                                        path:kAPIPath 
                                  parameters:params 
                   constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
                       //TODO: attach file if needed
    }];

    AFJSONRequestOperation* operation = [[AFJSONRequestOperation alloc] initWithRequest: apiRequest];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
        //success!
        completionBlock(responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        //failure :(
        completionBlock([NSDictionary dictionaryWithObject:[error localizedDescription] forKey:@"error"]);
    }];

    [operation start];
}

How to Post data in iOS?

3 Answers3