cordova - access file system iOS device using phonegap -

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i developing ios app using phonegap. application should able download files internet, storing them directory created in device. have done same thing android target, , code works properly. creates directory in phone, download , save files. in ios code doesn't work. i've tried search solutions in web, without results.

here code:

document.addeventlistener("deviceready", ondeviceready, false);  function ondeviceready() {     alert("device ready");     window.requestfilesystem(localfilesystem.persistent, 0, onfilesystemsuccess, fail); }  function onfilesystemsuccess(filesystem) {     console.log(filesystem.name);     console.log(filesystem.root.name);                   var directoryentry = filesystem.root;     directoryentry.getdirectory("mydir", {create: true, exclusive: false}, ondirectorysuccess, ondirectoryfail); }  function ondirectorysuccess(parent) {     console.log(parent);     window.localstorage.setitem("directory_path",parent.tourl()+'/'); }  function ondirectoryfail(error) {     alert("unable create new directory: " + error.code); }  function fail(evt) {     console.log(evt.target.error.code); }

in console can see output:

2014-04-14 17:30:11.338 xxxxxx[1511:60b] multi-tasking -> device: yes, app: yes 2014-04-14 17:30:11.350 xxxxxx[1511:60b] unlimited access network resources 2014-04-14 17:30:11.470 xxxxxx[1511:60b] [cdvtimer][file] 4.680991ms 2014-04-14 17:30:11.613 xxxxxx[1511:60b] [cdvtimer][splashscreen] 140.942991ms 2014-04-14 17:30:11.615 xxxxxx[1511:60b] [cdvtimer][totalpluginstartup] 149.509966ms 2014-04-14 17:30:11.640 xxxxxx[1511:60b] active 2014-04-14 17:30:13.902 xxxxxx[1511:60b] resetting plugins due page load. 2014-04-14 17:30:14.334 xxxxxx[1511:60b] failed load webpage error: operation couldn’t completed. (nsurlerrordomain error -999.) 2014-04-14 17:30:14.335 xxxxxx[1511:60b] resetting plugins due page load. 2014-04-14 17:30:14.718 xxxxxx[1511:60b] finished load of: file:///var/mobile/applications/3a5b82c4-3787-442f-858f-e0850f4a6338/xxxxxx.app/www/home.html


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