change-the-voice

代码说明：

  在Eclipse开发环境下，可以直接导入，导入之后可以依据自己的情况，改变音量调节的大小，同时还可以自行设计音量进度条的显示方式(In the Eclipse development environment, you can directly import, after import can be based on their own circumstances, to change the size of the volume control, but also can design their own volume progress bar is displayed)