Check out an example Android App showing Polymer components working on Android, everything loaded offline in a webview.

Check out an example Android App showing Polymer components working on Android, everything loaded offline in a webview.
A simple app for FirefoxOS realized with AngularJS, Polymer and BuildingBlocks. Check it out @ GitHub.
Check my project on GitHub, under MIT license, a simple Boilerplate App for FirefoxOS, using AngularJS.