android webview capturePicture

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http://stackoverflow.com – I'm developing an Android app (API version 15) with sencha-touch 1.1.1. I need to capture all the webview content (event the portion currently not visible on the screen). So I used capturePicture and it works fine but if I have a Ext.List, the content of the list isn't displayed (after some scrolling). I have investigated and I have noticed that Ext.List uses translate3d transformation. I have also developed a litte test project with a simple html page and css translate3d and capturePicture doesn't work. Looking here http://developer.android.com/reference/android/webkit/WebView.html#capt (HowTos)