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  1. PO
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    <p><a href="https://github.com/tweetdeck/TDOAuth" rel="noreferrer">TDOAuth</a> in my opinion was the best solution. it is clean and simple, only one .h and .m file to work with, and no complicated example projects..</p> <p>This is the OAuth 1.0 flow:</p> <p><strong>step 1 - get request token</strong> </p> <pre><code>//withings additional params NSMutableDictionary *dict = [NSMutableDictionary dictionary]; [dict setObject:CALL_BACK_URL forKey:@"oauth_callback"]; //init request NSURLRequest *rq = [TDOAuth URLRequestForPath:@"/request_token" GETParameters:dict scheme:@"https" host:@"oauth.withings.com/account" consumerKey:WITHINGS_OAUTH_KEY consumerSecret:WITHINGS_OAUTH_SECRET accessToken:nil tokenSecret:nil]; //fire request NSURLResponse* response; NSError* error = nil; NSData* result = [NSURLConnection sendSynchronousRequest:rq returningResponse:&amp;response error:&amp;error]; NSString *s = [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding]; //parse result NSMutableDictionary *params = [NSMutableDictionary dictionary]; NSArray *split = [s componentsSeparatedByString:@"&amp;"]; for (NSString *str in split){ NSArray *split2 = [str componentsSeparatedByString:@"="]; [params setObject:split2[1] forKey:split2[0]]; } token = params[@"oauth_token"]; tokenSecret = params[@"oauth_token_secret"]; </code></pre> <p><strong>step 2 - get authorize token</strong> (by loading the request in a UIWebView, the webViewDidFinishLoad delegate method will handle the call back..)</p> <pre><code>//withings additional params NSMutableDictionary *dict2 = [NSMutableDictionary dictionary]; [dict setObject:CALL_BACK_URL forKey:@"oauth_callback"]; //init request NSURLRequest *rq2 = [TDOAuth URLRequestForPath:@"/authorize" GETParameters:dict2 scheme:@"https" host:@"oauth.withings.com/account" consumerKey:WITHINGS_OAUTH_KEY consumerSecret:WITHINGS_OAUTH_SECRET accessToken:token tokenSecret:tokenSecret]; webView.delegate = self; [DBLoaderHUD showDBLoaderInView:webView]; [webView loadRequest:rq2]; </code></pre> <p><strong>handle the webView as follow to initiate step 3</strong> (I know the isAuthorizeCallBack smells a lot, but it does the job, should refactor it..)</p> <pre><code>- (void)webViewDidFinishLoad:(UIWebView *)aWebView { [DBLoaderHUD hideDBLoaderInView:webView]; NSString *userId = [self isAuthorizeCallBack]; if (userId) { //step 3 - get access token [DBLoaderHUD showDBLoaderInView:self.view]; [self getAccessTokenForUserId:userId]; } //ugly patchup to fix an invalid token bug if ([webView.request.URL.absoluteString isEqualToString:@"http://oauth.withings.com/account/authorize?"]) [self startOAuthFlow]; } - (NSString *)isAuthorizeCallBack { NSString *fullUrlString = webView.request.URL.absoluteString; if (!fullUrlString) return nil; NSArray *arr = [fullUrlString componentsSeparatedByString:@"?"]; if (!arr || arr.count!=2) return nil; if (![arr[0] isEqualToString:CALL_BACK_URL]) return nil; NSString *resultString = arr[1]; NSArray *arr2 = [resultString componentsSeparatedByString:@"&amp;"]; if (!arr2 || arr2.count!=3) return nil; NSString *userCred = arr2[0]; NSArray *arr3 = [userCred componentsSeparatedByString:@"="]; if (!arr3 || arr3.count!=2) return nil; if (![arr3[0] isEqualToString:@"userid"]) return nil; return arr3[1]; } - (void)startOAuthFlow { [self step1]; [self step2]; } </code></pre> <p><strong>and finally - step 3 - get access token</strong></p> <pre><code>- (void)getAccessTokenForUserId:(NSString *)userId { //step 3 - get access token //withings additional params NSMutableDictionary *dict = [NSMutableDictionary dictionary]; [dict setObject:CALL_BACK_URL forKey:@"oauth_callback"]; [dict setObject:userId forKey:@"userid"]; //init request NSURLRequest *rq = [TDOAuth URLRequestForPath:@"/access_token" GETParameters:dict scheme:@"https" host:@"oauth.withings.com/account" consumerKey:WITHINGS_OAUTH_KEY consumerSecret:WITHINGS_OAUTH_SECRET accessToken:token tokenSecret:tokenSecret]; //fire request NSURLResponse* response; NSError* error = nil; NSData* result = [NSURLConnection sendSynchronousRequest:rq returningResponse:&amp;response error:&amp;error]; NSString *s = [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding]; //parse result NSMutableDictionary *params = [NSMutableDictionary dictionary]; NSArray *split = [s componentsSeparatedByString:@"&amp;"]; for (NSString *str in split){ NSArray *split2 = [str componentsSeparatedByString:@"="]; [params setObject:split2[1] forKey:split2[0]]; } [self finishedAthourizationProcessWithUserId:userId AccessToken:params[@"oauth_token"] AccessTokenSecret:params[@"oauth_token_secret"]]; } </code></pre>
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    1. POImplementing OAuth 1.0 in an iOS app
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    1. USDavid Ben Ari
    1. USDavid Ben Ari
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    1. POImplementing OAuth 1.0 in an iOS app
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    1. COI have implemented your code but I am getting stuck at step 3. I display the Withings login page in the webview but it always returns with "Invalid oath token". Am I missing something? Thanks in advance.
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      1. USDmorneault
    2. CO@Dmorneault, I edited the answer with a small fix. look at the webViewDidFinishLoad method and add the code under the mark "ugly patchup to fix an invalid token bug". notice that it calls a method named "startOAuthFlow" which is simply step1 & step2 again. There seems to be a caching problem, and I tried resolving it with Withings support, but i ended up living this ugly but working patch..
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      1. USDavid Ben Ari
    3. COhow did you create requests for interacting with the API after authentication?
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      1. USEvan Davis
 

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