Android Development

Learn how to rewrite NFC tags on Android by deleting existing NDEF data and writing new text records using NdefFormatable and Ndef for safe, reliable updates.

Fix touch coordinate offset in CameraX by applying accurate scaling between PreviewView and camera resolution. Learn the complete DrawingView correction method.

Learn how to draw markers on CameraX preview images and save combined edited photos easily.

Encrypt Android data using stored AES key, salt, and IV files with CBC mode for secure storage.

Explore how encrypted image and video playback on Android achieves smooth performance, secure controls, and reliable behavior across devices.

Learn how an offline encrypted Android app was built to protect family media, avoid cloud risks, and deliver smooth secure playback.

A deep dive into encrypted video streaming on Android, covering performance tuning, secure UI behavior, and real device pitfalls.

Explore key design trade-offs behind an offline Android encrypted media app, from UI choices to secure storage.

A fully offline Android vault using AES encryption to protect photos and videos with smooth playback and zero cloud exposure.

Why Android Adoptable Storage does not automatically use the SD card for app data, and how to enable SD usage with system settings and manifest options.

Learn how to connect to a specific Wi‑Fi network on Android 10+ using WifiNetworkSpecifier, required permissions, and bindProcessToNetwork.