repository·master·Indexed 18 days ago
https://github.com/jhuster/androidA collection of Android development patterns, utility classes, and demonstration code. Covers UI components, JNI (callbacks, buffer passing, and signature generation), networking (WiFi scanning, Socket/UDP broadcasting), custom threading with LoopThread, and image processing utilities including BitmapHelper and ImageConvertor.
The CustomView module provides guidance and implementation examples for creating custom UI components. Key areas covered include:
onMeasure() for precise dimension calculation.onLayout() for custom ViewGroup positioning logic.JniBuffer module provides demonstrations of various methods for passing data buffers between the Java layer and the Native (JNI) layer, which is critical for high-performance data processing.LoopThread module demonstrates how to implement a custom worker thread that includes a message loop (Looper). This allows the thread to process a queue of messages or tasks sequentially, similar to how the Android Main Thread operates.JniCallback module demonstrates how to trigger Java function calls from within a Native (C/C++) thread using JNI. This is useful when your native processing logic needs to notify the Android application layer of events or results.Socket module contains networking utilities, specifically Broadcaster.java, which encapsulates the sending and receiving of UDP broadcast packets.WIFI module provides encapsulated APIs for performing WiFi scans and managing WiFi connections on Android devices.SignatureGen.java utility class is designed to generate Java function signature strings, which are required when working with JNI to map native methods to Java methods.The Utils directory contains several specialized image processing tools:
BitmapHelper.java: Encapsulates common Bitmap operations including opening, saving, cropping, and rotating images.ImageConvertor.java: Handles conversions between various image formats and color spaces, including NV21, YUY2, RGB565, ARGB8888, PNG, JPEG, and Bitmap.