搭建你的Android开发环境

You will need to have your Android developer environment set up before you can test your Unity games on the device. This involves downloading and installing the Android SDK with the different Android plaforms and adding your physical device to your system(this is done a bit differently depending on whether you are developing on Windows or Mac). 

访问Android功能

Unity Android provides scripting APIs to access various input data and settings. You can find out more about the available classes on the Androidscripting page.

包含原生的C C++ 或者java代码到脚本中？雾

Unity Android allows you to call custom functions written in C/C++ directly from C# scripts (Java functions can be called indirectly). To find out how to make functions from native code accessible from Unity, visit the Androidplugins page.

unity Android允许你通过C#脚本调用，C/C++的函数（java的函数可以直接调用？）在下如下页面查看如何写函数使得原生代码在unity中可以被访问。

Unity includes support for occlusion culling which is a particularly valuable optimization on mobile platforms. More information can be found on the occlusioncullingpage.

开机画面定制

The splash screen displayed while the game launches can be customized - see this page for further details.

在游戏开始时候的播放的画面可以被定制了，您可以再这个页面中查看相关类容。

故障排除和报告问题

There are many reasons why your application may crash or fail to work as you expected. Our Android troubleshooting guide willhelp you get to the bottom of bugs as quickly as possible. If, after consulting the guide, you suspect the problem is internal to Unity then you should file a bug report - see thispage for details on how to do this.

Android版unity和桌面版的不同

强制类型转换的javaScript

For performance reasons, dynamic typing in JavaScript is always turned off in Unity Android, as if #pragma strict were applied automatically to all scripts. This is important to know if you start with a project originally developed for the desktop platformssince you may find you get unexpected compile errors when switching to Android; dynamic typing is the first thing to investigate. These errors are usually easy to fix if you make sure all variables are explicitly typed or use type inference on initialization.

出于性能考虑，javaScript的动态类型始终是关闭的，在Android 版unity中，好像严格的#pragma被自动应用到所有的脚本应用。这是非常重要的知道，如果你开始与最初开发用于桌面平台的项目，因为你可能会发现你切换到Android时意外编译错误;动态类型是你首先要研究的事情。这些错误通常是容易解决，如果你确保所有的变量都隐式类型或使用类型推断进行初始化操作。

Although Unity Android does support DXT/PVRTC/ATC textures, Unity will decompress the textures into RGB(A) format at runtime if those compression methods are not supported by the particular device in use. This could have an impact on the GPU renderingspeed and it is recommended to use the ETC format instead. ETC is the de facto standard compression format on Android, and should be supported on all post 2.0 devices. However, ETC does not support an alpha channel and RGBA 16-bit will sometimes be the besttrade-off between size, quality and rendering speed where alpha is required.

ECT是被推荐的材质压缩方法

虽然unity Android版支持DXT/PVRTC/ATC材质，但是unity会解压纹理为RGB格式在运行时，i如果这些压缩方式不能被实际运行的设备支持的话。

It is also possible to create separate android distribution archives (.apk) for each of the DXT/PVRTC/ATC formats, and let the Android Market’s filtering system select the correct archives for different devices (see thispage for further details).

Movie textures are not supported on Android, but a full-screen streaming playback is provided via scripting functions. To learn about supported file formats and scripting API, consult the moviepage or the Android supported media formats page.