javascript - MonoTouch - Can I call ShouldStartLoad with AJAX? -

first of all, want thank miguel.de.icaza this answer! helped lot! - here's big but, here's our problem. in uiwebview start "little" javascript app, created senchatouch, displays charts. give little , feel, there's interaction graphs. , sometime, need more data backend (e.g. different chart types) using ajax request. since backend saved self signed certificate, doesn't work webview, know.

so, try accieve ajax request our js-app monotouch-app code, mono-app gets data webview , passes javascript function, updates charts new data.

but of right now, we're not able work, because call location.href = "app://get/chartdata" we're logging "about:blank" request, right before "app://get/chartdata" request, - of course - blanks webview , current chart gone. using simple ajax request doesn't work reason. meaning, ajax request doesn't call shouldloadstart callback. maybe, knows why?

here's our monotouch code far. testing general workflow!! ;-)

nsurl fileurl = nsurl.fromfilename("index.html");  nsurlrequest req = new nsurlrequest(fileurl); this.kpiwebview.loadrequest(req); this.kpiwebview.shouldstartload = myhandler;   this.kpiwebview.loadfinished += delegate {     indicator.stopanimating ();     this.kpiwebview.hidden = false; };   bool myhandler(uiwebview webview, nsurlrequest request, uiwebviewnavigationtype navtype) {     console.writeline(request.url.tostring());     if(request.url.tostring() == "about:blank")     {return false;} // doesn't avoid loading "about:blank"      if(request.url.tostring() == "ttl://data/salesgrowth/global")     {         string strdata = connection.login("http://[yourip/path]/salesgrowth/global");         return false;                         try{             this.kpiwebview.evaluatejavascript("util.loadstoredata("+strdata+")");                 return false;             }         catch(exception ex)             { console.writeline(ex.tostring()); }                        return true;     } } 

any comments, ideas , appreciated.

thanks!

edit: after more googleling found out, thing about:blank request known issue senach touch http://www.sencha.com/forum/showthread.php?123284-what-s-up-with-the-about-blank-page. finally, able getting run using our own url schema:

location.href = "app://action?jscallback=monocallback&jserrorcallback=errorcallback&paramname1=name1&paramval1=value1&..." 

in webview.shouldstartload callback, we're using system.uri namespace check app protocol , parameters , javascript callback function names. can our request within mono-app. after action, can call jscallback function

webview.evaluatejavascript(jscallback+"("+strvalues+")");

so, works fine now, asynchronous!

hope of you, struggeling same workflow issue self signed certificate within webview, find description helpful. if have more questions our "workaround" feel free contact me.

thanks!