Automatic Translation tool for Android

Update 11.08.2018: Google not support this any more

I've not tried it but I've heard about Google Translate Toolkit. Appears to support a wide range of formats, including Android resources.

• AdWords Editor Archive (.aea)
• Android Resource (.xml)
• Apple iOS
• Application (.strings)
• Application Resource Bundle (.arb)
• Chrome Extension (.json)
• GNU gettext (.po)
• HTML (.html)
• Java Application (.properties)
• Microsoft Word (.doc)
• OpenDocument Text (.odt)
• Plain
• Text (.txt)
• Rich Text (.rtf)
• SubRip (.srt)
• SubViewer (.sub)

@Pedro Rainho tool doesn't work anymore because it uses old api key method which bing has recently changed. I have creater a GUI App using new bing secret api key apporach. You can check it. App is available at SourceForge