如何从iOS使用api 1.1获取twitter个人资料？

Question

我正在使用MGTwitterEngine lib来验证Twitter帐户,但是在成功登录后我想获得用户配置文件pic但无法获取它并且以下方法停止工作:

https://api.twitter.com/1.1/users/profile_image?screen_name=username&size=bigger

我只是尝试了上面的方法,但没有成功.然后我做了很多关于它的研究,我终于得到了api来获取用户个人资料信息,其中包括个人资料照片:

https://api.twitter.com/1.1/users/show.json?screen_name=username

但是这个api需要通过在Request头中传递Authorization来进行身份验证,这是我无法生成的.

这是我试过的代码:

这里authdata是我成功登录后从MGTwitterEngine lib返回的字符串.

NSString *authData = [[NSUserDefaults standardUserDefaults] valueForKey:@"authData"];
NSString *subAuthdata = [authData substringFromIndex:[authData rangeOfString:@"oauth_token_secret="].location];
subAuthdata = [subAuthdata substringToIndex:[subAuthdata rangeOfString:@"&user_id="].location];
NSLog(@"%@", subAuthdata);

NSLog(@"encoded: %@", [self base64Encode:subAuthdata]);

NSString *accessTokenHeaderToPost = [NSString stringWithFormat:@"Basic %@", [self base64Encode:subAuthdata]];

NSString  *twitURL = @"https://api.twitter.com/1.1/users/show.json?screen_name=username";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString: twitURL]];
[request setHTTPMethod:@"GET"];
[request setValue:accessTokenHeaderToPost forHTTPHeaderField:@"Authorization"];
NSError *err;
NSURLResponse *response;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

NSLog (@"RESP: %@", responseString);

但它总是说不好的身份验证数据.

请帮帮我...

Answer 1

以下是使用STTwitter的解决方案:

STTwitterAPI *twitter = [STTwitterAPI twitterAPIAppOnlyWithConsumerKey:@"" consumerSecret:@""];

[twitter verifyCredentialsWithSuccessBlock:^(NSString *bearerToken) {

    [twitter getUsersShowForUserID:nil orScreenName:@"barackobama" includeEntities:nil successBlock:^(NSDictionary *user) {

        NSString *profileImageURLString = [user valueForKey:@"profile_image_url"];
        NSURL *url = [NSURL URLWithString:profileImageURLString];
        UIImage *profileImage = [UIImage imageWithContentsOfURL:url];

    } errorBlock:^(NSError *error) {
        //
    }];

} errorBlock:^(NSError *error) {
    //
}];