javascript - NSString from webview with JSON string -


i have webview i'm calling method returns result of json.stringify(); stored in database , used later restore state of page in webview.

nsstring *data = [self.browser stringbyevaluatingjavascriptfromstring:@"course.serialize();"]; [self.course storerawserializeddata:data];

when retrieved database (core data) i'm injecting loaded html page source so:

-(void)connectiondidfinishloading:(nsurlconnection *)connection {     if(_data){         nsstring* content = [[nsstring alloc] initwithdata:_data                                                   encoding:nsutf8stringencoding];         _data = nil;         _jsready = yes;          nsstring *data = @"";         if(self.course.returnrawserializeddata){             data = [data stringbyappendingstring:@"<script type=\"text/javascript\">var restoredata=%@;</script>"];             data = [nsstring stringwithformat:data, self.course.returnrawserializeddata];         }         //inject content page         content = [data stringbyappendingstring:content];         //load modified html string         [self.browser loadhtmlstring:content baseurl:_url];     } }

the problem json being invalid after trip:

the json returned webview is:

{"status":"incomplete","data_json":"{\"colour\":\"#000000\"}"}

and after injecting looks this:

<script type=\"text/javascript\">var restoredata={"status":"incomplete","data_json":"{\"colour\":\"#000000\"}"};</script>

the page returns syntaxerror: json parse error: unexpected identifier "object"

when wrap single or double quotes in stringbyappendingstring method page returns syntaxerror: json parse error: expected '}'

it works when escape double quotes (manually) don;t know how programatically, expected string returned stringbyevaluatingjavascriptfromstring escaped used within double quotes.

you can consider following solution,

you base64 encode nsstring want inject in objective-c reverse in javascript.


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