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Android environment setup
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Getting started with Android development

The Android environment setup topic of the Unity Manual contains a basic outline of the tasks that you must complete before you are able to run code on your Android device, or in the Android emulator. For more in-depth information on setting your Android development environment, see the step-by-step instructions on the Android developer portal.

If you miss installing some necessary item during set-up, Unity verifies your development environment when building for Android and prompts you to upgrade or download missing components.

Unity provides scripting APIs that allow you to access various input data and settings from Android devices.

Refer to the Android scripting page of the Manual for more information.

Exposing native C, C++ or Java code to scripts

Use plug-insA set of code created outside of Unity that creates functionality in Unity. There are two kinds of plug-ins you can use in Unity: Managed plug-ins (managed .NET assemblies created with tools like Visual Studio) and Native plug-ins (platform-specific native code libraries). More info
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to call Android functions written in C/C++ directly from C# scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info
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(Java functions can be called indirectly).

To find out how to make these functions accessible from within Unity, visit the Android plug-ins page.

Occlusion culling

Unity includes support for occlusion culling, which is a valuable optimization method for mobile platforms.

Refer to the Occlusion CullingA Unity feature that disables rendering of objects when they are not currently seen by the camera because they are obscured (occluded) by other objects. More info
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Manual page for more information.

Splash screen customization

You can customize the splash screen that displays while the game launches on Android.

Refer to the Customizing an Android Splash Screen Manual page for more information.

Troubleshooting and bug reports

The Android troubleshooting guide helps you discover the cause of bugs as quickly as possible. If, after consulting the guide, you suspect the problem is being caused by Unity, file a bug report following the Unity bug reporting guidelines.

See the Android bug reporting page for details about filing bug reports.

Texture compression

Ericsson Texture CompressionA method of storing data that reduces the amount of storage space it requires. See Texture Compression, Animation CompressionThe method of compressing animation data to significantly reduce file sizes without causing a noticable reduction in motion quality. Animation compression is a trade off between saving on memory and image quality. More info
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, Audio Compression, Build Compression.
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(ETC) is the standard texture compression3D Graphics hardware requires Textures to be compressed in specialised formats which are optimised for fast Texture sampling. More info
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format on Android.

ETC1 is supported on all current Android devices, but it does not support textures that have an alpha channel. ETC2 is supported on all Android devices that support OpenGL ES 3.0. It provides improved quality for RGB textures, and also supports textures with an alpha channel.

By default, Unity uses ETC1 for compressed RGB textures and ETC2 for compressed RGBA textures. If ETC2 is not supported by an Android device, the texture is decompressed at run time. This has an impact on memory usage, and also affects renderingThe process of drawing graphics to the screen (or to a render texture). By default, the main camera in Unity renders its view to the screen. More info
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DXT, PVRTCPowerVR Texture Compression (PVRTC) is a fixed-rate texture format that compresses textures to significantly reduce file sizes without causing a noticable reduction in image quality. More info
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, ATCAMD’s texture compression format for handheld devices to save on power, memory and bandwidth
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, and ASTCAdaptive Scalable Texture Compression (ASTC) A block-based texture format that compresses textures to significantly reduce file sizes without cau sing a noticable reduction in image quality. More info
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are all support textures with an alpha channel. These formats also support higher compression rates and/or better image quality, but they are only supported on a subset of Android devices.

It is possible to create separate Android distribution archives (.apk) for each of these formats and let the Android Market’s filtering system select the correct archives for different devices.

Movie/Video playback

We recommend you use the Video Player to play video files. This supersedes the earlier Movie Texture feature.

  • Video Player component added in Unity 5.6

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Android environment setup