xcode - 我怎样才能通过我的社交网站集成到 iPhone 应用程序中

Question

嗨，我想将Via Me社交网站集成到我的 iphone 应用程序中，我用谷歌搜索但没有找到任何示例。

Answer 1

基本流程如下：

1. 为您的应用创建自定义 URL 方案。在用户通过身份验证后，Via Me 将使用它返回到您的应用程序。在我的示例中，我创建了一个名为“ robviame://”

2. 在http://via.me/developers注册您的应用程序。这将为您提供一个客户端 ID 和一个客户端密码：

   

3. 当您要验证用户身份时，请调用：

   NSString *redirectUri = [[self redirectURI] stringByAddingPercentEscapesForURLParameterUsingEncoding:NSUTF8StringEncoding];
   NSString *urlString = [NSString stringWithFormat:@"https://api.via.me/oauth/authorize/?client_id=%@&redirect_uri=%@&response_type=code", kClientID, redirectUri];
   NSURL *url = [NSURL URLWithString:urlString];
   [[UIApplication sharedApplication] openURL:url];
   

4. 这将启动您的网络浏览器，并让用户有机会登录并授予您的应用程序的权限。当用户完成该过程时，因为您已经定义了自定义 URL 方案，它将在您的应用程序委托中调用以下方法：

   - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
   {
       // do whatever you want here to parse the code provided back to the app
   }
   

   例如，我将为我的 Via Me 响应调用一个处理程序：

   - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
   {
       ViaMeManager *viaMeManager = [ViaMeManager sharedManager];
   
       if ([[url host] isEqualToString:viaMeManager.host])
       {
           [viaMeManager handleViaMeResponse:[self parseQueryString:[url query]]];
   
           return YES;
       }
   
       return NO;
   }
   
   // convert the query string into a dictionary
   
   - (NSDictionary *)parseQueryString:(NSString *)query
   {
       NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];
       NSArray *queryParameters = [query componentsSeparatedByString:@"&"];
   
       for (NSString *queryParameter in queryParameters) {
           NSArray *elements = [queryParameter componentsSeparatedByString:@"="];
           NSString *key     = [elements[0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
           NSString *value   = [elements[1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
           value             = [[value componentsSeparatedByString:@"+"] componentsJoinedByString:@" "];
   
           [dictionary setObject:value forKey:key];
       }
       return dictionary;
   }
   

   例如，该处理程序可能会保存代码，然后请求访问令牌：

   - (void)handleViaMeResponse:(NSDictionary *)parameters
   {
       self.code = parameters[@"code"];
   
       if (self.code)
       {
           // save the code
   
           [[NSUserDefaults standardUserDefaults] setValue:self.code forKey:kViaMeUserDefaultKeyCode];
           [[NSUserDefaults standardUserDefaults] synchronize];
   
           // now let's authenticate the user and get an access key
   
           [self requestToken];
       }
       else
       {
           NSLog(@"%s: parameters = %@", __FUNCTION__, parameters);
   
           NSString *errorCode = parameters[@"error"];
           if ([errorCode isEqualToString:@"access_denied"])
           {
               [[[UIAlertView alloc] initWithTitle:nil
                                           message:@"Via Me functions will not be enabled because you did not authorize this app"
                                          delegate:nil
                                 cancelButtonTitle:@"OK"
                                 otherButtonTitles:nil] show];
           }
           else
           {
               [[[UIAlertView alloc] initWithTitle:nil
                                           message:@"Unknown Via Me authorization error"
                                          delegate:nil
                                 cancelButtonTitle:@"OK"
                                 otherButtonTitles:nil] show];
           }
       }
   }
   

   检索令牌的代码可能如下所示：

   - (void)requestToken
   {
       NSURL *url = [NSURL URLWithString:@"https://api.via.me/oauth/access_token"];
       NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
       [request setHTTPMethod:@"POST"];
   
       NSDictionary *paramsDictionary = @{@"client_id"     : kClientID,
                                          @"client_secret" : kClientSecret,
                                          @"grant_type"    : @"authorization_code",
                                          @"redirect_uri"  : [self redirectURI],
                                          @"code"          : self.code,
                                          @"response_type" : @"token"
                                          };
   
       NSMutableArray *paramsArray = [NSMutableArray array];
       [paramsDictionary enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *obj, BOOL *stop) {
           [paramsArray addObject:[NSString stringWithFormat:@"%@=%@", key, [obj stringByAddingPercentEscapesForURLParameterUsingEncoding:NSUTF8StringEncoding]]];
       }];
   
       NSData *paramsData = [[paramsArray componentsJoinedByString:@"&"] dataUsingEncoding:NSUTF8StringEncoding];
       [request setHTTPBody:paramsData];
   
       NSOperationQueue *queue = [[NSOperationQueue alloc] init];
       [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
           if (error)
           {
               NSLog(@"%s: NSURLConnection error = %@", __FUNCTION__, error);
               return;
           }
   
           NSError *parseError;
           id results = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
   
           if (parseError)
           {
               NSLog(@"%s: NSJSONSerialization error = %@", __FUNCTION__, parseError);
               return;
           }
   
           self.accessToken = results[@"access_token"];
   
           if (self.accessToken)
           {
               [[NSUserDefaults standardUserDefaults] setValue:self.accessToken forKey:kViaMeUserDefaultKeyAccessToken];
               [[NSUserDefaults standardUserDefaults] synchronize];
           }
       }];
   }
   

希望这足以让你继续前进。这在http://via.me/developers页面上有更详细的描述。