Color Filters in Android SDK

Demonstration and Design Application for Color Filters in the Android Framework

This application serves as both a demonstration and a design tool for exploring the various color filters available within the Android framework. It is primarily aimed at Android software engineers, but its intuitive interface makes it enjoyable for anyone interested in visual experimentation.

Features

• Live Preview: See the effects of your color adjustments in real-time.
• Image Selection: Pick any image from your device, including transparent animated GIFs.
• Smooth Color Picker: Effortlessly select colors with a user-friendly interface.
• Color Swatches: Experiment with different color combinations using pre-defined swatches.
• Custom Keyboards: Utilize built-in custom keyboards for easier input.
• Code Generation: Automatically generate code snippets based on your selected filters.
• Share Functionality: Share your preview along with the generated code.
• Auto-Save: Save your entire project state automatically to ensure no work is lost.

Purpose

The documentation for classes that extend android.graphics.ColorFilter is rather sparse, making it challenging to create filters that achieve desired effects. This application provides a hands-on approach by allowing users to experiment with all possible parameter combinations while providing a live preview of their chosen image. This can greatly aid developers in understanding and implementing color filters effectively.

Supported Classes

Currently, the application supports all built-in color filters in the android.graphics package and the support library's palette classes, specifically for API Level 22 / M 5.1:

• Palette/Swatch: For managing color palettes.
• ColorMatrixColorFilter: For applying complex color transformations.
• LightingColorFilter: For simple tinting operations.
• PorterDuffColorFilter: For advanced compositing operations.

For further details, refer to the official Android documentation:

• Android ColorFilter Reference
• Android Palette Class Reference

Permissions

To use this application, the following permissions are required:

• Read External Storage: To load images for preview.
• Write External Storage: To capture images from the camera and share previews.

Feedback

Your feedback is highly appreciated! It will help us improve the application and make it even more useful for developers.

Note: This is not an official Google product. Android is a trademark of Google Inc.