Introduction - If you have any usage issues, please Google them yourself
Author: HuaQing vision 3 G institute. "The Android multimedia programming from beginners to master" the first chapter, Android overview. Android as an open, the open-source mobile terminal platform for industry, speaking, this means that the source code based on I can with Apache 2.0 permission for open. And the most used open source code of the GPL license, I can with Apache 2.0 2.0 different permission does not require developers will write the code to give feedback to the community, it will help enterprise business practices.