objective c - Facebook json data error, cocoa error 3840 -


i'm trying data facebook, i'm getting error when try parse data dictionary:

mistake: error domain=nscocoaerrordomain code=3840 "the operation couldn’t completed. (cocoa error 3840.)" (no value.) userinfo=0x144ad420

this code:

nsstring *query =  @"select page_id, type page_fan uid = me() ";  // set query parameter  nsdictionary *queryparam = @{ @"q": query };  // make api request uses fql  [fbrequestconnection startwithgraphpath:@"/fql"  parameters:queryparam  httpmethod:@"get"  completionhandler:^(fbrequestconnection *connection,  id results,  nserror *error) {  if (error) {  nslog(@"error: %@", [error localizeddescription]);  } else {    bool can = [nsjsonserialization isvalidjsonobject:results];  nslog(@"can %d", can);   nserror *mistake;  nsdictionary *first = [nsjsonserialization jsonobjectwithdata:results options:0 error:&mistake];    if (mistake) {  nslog(@"mistake: %@", mistake);  } else {  nslog(@"no mistake");  }

the can identifier returns '1' i'm assuming error not data facebook providing.

the data facebook returning fine, sample of results:

data =     (                 {             "page_id" = 253370381511811;             type = "public figure";         },                 {             "page_id" = 148389618201;             type = "local business";         },                 {             "page_id" = 213631462169238;             type = community;         }

i don't know library, code wrote cannot possibly work.

isvalidjsonobject method checks whether have object can serialised json, nsarray or nsdictionary containing keys , values can serialised json.

jsonobjectwithdata method takes nsdata object , deserialises nsarray or nsdictionary.

since nsdata object fail in isvalidjsonobject, , nsdictionary or nsarray never valid input jsonobjectwithdata, 1 of these calls must fail.


Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more