Android Game Development Wiki

From Android Game Development Wiki

Welcome

Welcome to the Android game development Wiki! This is a Wiki designed to document and archive all tips, tricks, glitches and bugs that you'll battle against while developing games for Android.

The Wiki is split up into multiple sections you can see below. Each section discusses peculiarities of specific areas of Android like Dalvik, OpenGL ES, device glitches and bugs and so on.

In the spirit of a Wiki you are welcome to contribute to this Wiki and share your knowledge with others. You can contribute anonymously by passing a captcha text on edits or register an account and not get bothered with typing in words on each edit. If you chose to contribute make sure that you:

• Create a new page for each little tidbit you contribute
• Describe in detail the bug, glitch or tip you have
• Preferably add sample code, images and so on to illustrate your contribution
• If you include code attach the complete source of a runnable example if possible to the page. It will get included in the Android Game Development Wiki Samples project over at [1]
• Add a link to the page as a list item in one of the sections below

Following this four simple rules should ensure a minimal amount of quality and ease navigation and search on the Wiki. For formatting help you can consult the Editing Help Page. We also installed a syntax highlighting module. Information on how to apply syntax highlighting to code in your page can be found on Syntax Highlighting Help Page. You can also embed videos from sites like YouTube as explained on the Video Emebeding Help Page.

As mentioned earlier, some of the code examples found in this Wiki might be included in the Android Game Development Wiki Samples, an Android project hosted on Google Code. If you send me a nice e-mail to contact@badlogicgames.com i will include your running sample in the project. Contributions welcome! You can download the last release of the samples from this link or via the QR code below:

Note: this is still a work in progress. While many topics are already laid out in form of descriptive page titles it will take a couple of days/weeks to actually write the articles and corresponding sample code. Contributions welcome!

Dalvik, Runtime Libraries & JNI Dalvik Optimization Guidelines Avoiding Garbage Collector Invocations Querying the Installed Android Version Direct Bulk FloatBuffer.put is slow GetDirectBufferAddress & GetPrimitiveArrayCritical Order Fixed Point Versus Floating Point Performance	2D Graphics API to be extended
Audio to be extended	OpenGL ES Querying for OpenGL ES 2.0 Support Incomplete OpenGL ES 2.0 Java Bindings in API level 8 Direct & Non-Direct ByteBuffers With OpenGL ES Qualcomm MSM720x Chip Woes Texture Matrix Stack Not Working Correctly Non-Screen-Aligned Textured Quad Rendering is Slow Vertex Lighting is Slow Severe Bug Updating Already Bound Buffer Object glSubBufferData is Slow on Qualcomm Chips Fixed Point Versus Floating Point Performance On the GPU Alpha Blending Versus Alpha Testing
Input Transferring Input Events From the UI Thread to the Game Thread Touch Event Flooding Garbage Collector Invocation Due to Touch Events High CPU Usage on Touch Events High CPU Usage on Key Events Querying for Multitouch Support Incorrect Tracking of Multiple Fingers	Devices and Chipsets MSM7200 Cortex A8 Snapdragon
Miscellaneous Smooth Animations with Fluctuating Frame Delta Times First Generation Device Performance Other Pitfalls Version Control	External Resources PowerVR SGX OpenGL ES 2.0 Application Development Recommendations