How to get twitter profile picture in ios?

Question

I wrote the following code:

NSURL *url = [NSURL URLWithString:@"http://api.twitter.com/1.1/users/show.json"];

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:username, @"screen_name" ,[[controller.engine accessToken] secret]];

TWRequest *request = [[TWRequest alloc] initWithURL:url parameters:params requestMethod:TWRequestMethodGET];

[request performRequestWithHandler:
 ^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
     if (responseData) {
         NSDictionary *user = [NSJSONSerialization JSONObjectWithData:responseData
                                         options:NSJSONReadingAllowFragments
                                           error:NULL];

         NSString *profileImageUrl = [user objectForKey:@"profile_image_url"];

         NSLog(@"%@",profileImageUrl);
     }
 }];

But I always end up getting a Bad authentication error. I feel I'm missing something. Would anyone please check my code? Or provide any suggestions to retrieve twitter user profile pictures?

Thanks

Answer 1

Have you considered using a 3rd party Twitter engine for this? I've used FHSTwitterEngine with a fair amount of success, and it seems to be under active development.

To pull a profile picture you would do something like this:

[[FHSTwitterEngine sharedEngine]permanentlySetConsumerKey:@"<consumer_key>" andSecret:@"<consumer_secret>"];
[[FHSTwitterEngine sharedEngine]showOAuthLoginControllerFromViewController:self
withCompletion:^(BOOL success) {
    if (success) {
        UIImage *profileImg = [[FHSTwitterEngine sharedEngine] getProfileImageForUsername:@"<username>" andSize:size];
    }
}];

Answer 2

this is what i have tried in past

[PFTwitterUtils logInWithBlock:^(PFUser *user, NSError *error) {
    if (!user) {
        NSLog(@"Uh oh. The user cancelled the Twitter login.");
        [[NSNotificationCenter defaultCenter] postNotificationName:notificationUserLoginFailed
                                                            object:error];
        return;
    } else {

        // TODO find a way to fetch details with Twitter..

        NSString * requestString = [NSString stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@", user.username];


        NSURL *verify = [NSURL URLWithString:requestString];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:verify];
        [[PFTwitterUtils twitter] signRequest:request];
        NSURLResponse *response = nil;
        NSData *data = [NSURLConnection sendSynchronousRequest:request
                                             returningResponse:&response
                                                         error:&error];


        if ( error == nil){
            NSDictionary* result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
            _NSLog(@"%@",result);

            [user setObject:[result objectForKey:@"profile_image_url_https"]
                     forKey:@"picture"];
            // does this thign help?
            [user setUsername:[result objectForKey:@"screen_name"]];

            NSString * names = [result objectForKey:@"name"];
            NSMutableArray * array = [NSMutableArray arrayWithArray:[names componentsSeparatedByString:@" "]];
            if ( array.count > 1){
                [user setObject:[array lastObject]
                         forKey:@"last_name"];

                [array removeLastObject];
                [user setObject:[array componentsJoinedByString:@" " ]
                         forKey:@"first_name"];
            }

            [user saveInBackground];
        }

        [[NSNotificationCenter defaultCenter] postNotificationName:notificationUserDidLogin
                                                            object:nil];

        return;
    }



}];