open local pdf file in webview in alloy project

Hi,

I want to open a local pdf file in alloy project

I have a folder named files in app folder. app -> files -> folder -> file.pdf

here the code i write to open file :

var filepath = Ti.Filesystem.resourcesDirectory + '/files/folder/file.pdf';
$.mywebview.url = filepath

var filepath = Ti.Filesystem.resourcesDirectory + 'files/folder/file.pdf';
or
var filepath = Ti.Filesystem.applicationDataDirectory + 'files/folder/file.pdf';
or
var filepath = Ti.Filesystem.applicationDataDirectory + '/files/folder/file.pdf';

any help ?

thank you.