maunashjani/AndroidDemos ? reverse-engineered prompt

Build me an Android demo app that acts like a little playground for learning common Android UI and app features.

I want a simple home screen that shows a list of different demos, and when I tap one it opens that example, like buttons, text input, toasts, lists, recycler views, menus, dialogs, intents, camera capture, notifications, shared preferences, services, broadcast receivers, and basic layouts. Each demo should be easy to understand and feel like a small working sample, not a polished product.

Keep the design clean and simple, with clear labels so I can quickly try each feature. If it helps, make it easy to switch between the examples and reuse the same general app structure for all of them. Use current Android best practices if anything in the old samples is outdated, and look up current docs online if you need to.