Why Weibo SSO sdk don't jump back to my iOS app

This question is for those didn't watch the documentation of the SSO-sdk(me as an example).

The callback url is not set in the web. It should be placed when you initiate the SinaWeibo instance. It is provided 2 init method and they are:

-(id) initWithAppKey:(NSString*)_appKey 
           appSecret:(NSString *)_appSecrect 
      appRedirectURI:(NSString *) _appRedirectURI
         andDelegate:(id)_delegate 

and

- (id)initWithAppKey:(NSString *)_appKey 
           appSecret:(NSString *)_appSecrect 
      appRedirectURI:(NSString *) _appRedirectURI
   ssoCallbackScheme:(NSString *)_ssoCallbackScheme
         andDelegate:(id)_delegate

We should use the latter one and put the callback Uri as ssoCallbackScheme, then everything will be work fine.