Practical guides

These guides are task-oriented. Each one shows the Python declaration, the generated Android behavior and the part that remains under application control.

01API-backed feed

Pagination, refresh, retry and optimistic rows.

02Real-time chat

WebSocket lifecycle, pending sends and reconnect.

03Firebase push

Token, topics, foreground events and Android setup.

04Spotify-style audio

Background service, playlists and lock-screen controls.

05SQLite and encryption

Parameterized data, transactions and protected values.

06Streaming uploads

Multipart progress, cancellation and result handling.

07Maps and tracking

Device location, preview simulation and calculated routes.

08Knowledge app

Markdown, inline spans, trees and local documents.

How to use a guide

1. Copy the smallest example into writehere.py.
2. Confirm callbacks and layout in the Hot Previewer.
3. Run apkpy build.
4. Open the generated project in Android Studio.
5. Test platform behavior on an emulator and a physical device.

The Previewer is a fast development surface. Permission dialogs, codecs, background restrictions, Firebase and GPS must still be validated on Android.