I am the only Android developer in my startup team. I wish I had someone to learn from. Should I continue here?

Hello! Being the only Android developer in your startup gives you an excellent environment for learning. You have the opportunity to learn and experiment with new tools, and learn how to figure out things on your own. You probably already know but Stackoverflow (https://stackoverflow.com/questions) has a ton of answers about technical issues for android developers.

When a critical issue arises and you're really not sure how to fix it, you can still ask the founders of your company to put you in touch with a mentor.