Add more Android developments best practices to help the world.

[niharika2810]

Lets help the tech community by your knowledge and learnings. Just add any DOs and DONTs you encountered during development. Try to give a ral world scenario or add few explanations for better understanding.

[Subhadiptech]

Can I add some ? @niharika2810

[Joaquin144]

I want to add some of my best found practices. May I contribute? @niharika2810