ios - 如何从谷歌，雅虎获取访问令牌？

Question

我是iPhone新手，我试图获得访问令牌，我必须及时完成这项任务。我得到这个链接http://www.stevesaxon.me/posts/2011/window-external-notify-in-ios-uiwebview/这样做，但我无法清楚地理解。任何人都可以帮助我？

如何在下面的代码中正确调用给定的javascript？

<script type='text/javascript'>\ 
window.external =\ 
{\ 
    'Notify': function(s) { document.location = 'acs://settoken?token=' + s; },\ 
    'notify': function(s) { document.location = 'acs://settoken?token=' + s; }\ 
}\ 
</script> 

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 
{ 

    if(_data) 
    { 
     NSString* content = [[NSString alloc] initWithData:_data 
               encoding:NSUTF8StringEncoding]; 

    [_data release]; 
    _data = nil; 

    NSString* jsString = @"<script type='text/javascript'>\ 
    window.external =\ 
    {\ 
    'Notify': function(s) { document.location = 'acs://settoken?token=' + s; },\ 
    'notify': function(s) { document.location = 'acs://settoken?token=' + s; }\ 
    }\ 
    </script>"; 

    NSString *result = [webView stringByEvaluatingJavaScriptFromString: jsString]; 

    content = [content stringByAppendingString:result]; 

    [webView loadHTMLString:content baseURL:_url]; 
    } 

} 

    - (BOOL)webView:(UIWebView *)webView 
    shouldStartLoadWithRequest:(NSURLRequest *)request 
    navigationType:(UIWebViewNavigationType)navigationType 

{ 

if(_url) 
{   
if([_url isEqual:[request URL]]) 
{ 
    return YES; 
}  
[_url release]; 
} 
//Here am getting http://LoginSuccess.aspx 
_url = [[request URL] retain]; 
NSString* scheme = [_url scheme];//Here am getting http 

//So here condition fails 

if([scheme isEqualToString:@"acs"]) 
{ 
// parse the JSON URL parameter into a dictionary 
_url = [NSURL URLWithString:@"https://converse.accesscontrol.windows"]; 
NSDictionary* pairs = [self parsePairs:[_url absoluteString]]; 
if(pairs) 
{ 
    WACloudAccessToken* accessToken; 
    accessToken = [[WACloudAccessToken alloc] initWithDictionary:pairs]; 
    //[WACloudAccessControlClient settoken:accessToken]; 

    [self dismissModalViewControllerAnimated:YES]; 
}  
return NO; 
} 

[NSURLConnection connectionWithRequest:request delegate:self]; 

return NO; 

} 

任何想法？提前致谢。

Answer 1

试试这个： -

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 
{ 

    if(_data) 

    { 
     NSString* content = [[NSString alloc] initWithData:_data 
                encoding:NSUTF8StringEncoding]; 
     [_data release]; 
     _data = nil; 

     NSString* Html = @" <script type='text/javascript'>\ 
     window.external =\ 
     {\ 
     'Notify': function(s) { document.location = 'acs://settoken?token=' + s; },\ 
     'notify': function(s) { document.location = 'acs://settoken?token=' + s; }\ 
     }\ 
     </script>"; 

     //Here to call that javascript 

     NSString *result = [_webView stringByEvaluatingJavaScriptFromString:Html]; 

     content = [ScriptNotify stringByAppendingString:result]; 
     [webView loadHTMLString:content baseURL:_url]; 
    } 

}