我们在 Android 12 中添加了更多自定义功能，以提升电视设备上的体验和兼容性。TV 版本的亮点包括改进了媒体播放功能、优化了界面功能，以及增强了隐私和安全性。此外，我们还将推出更好的标准，以支持和改进 HDMI 和调谐器。
下面简要介绍了 Android 12 for TV 中的新变化：
媒体
- 使用刷新率切换功能避免播放期间出现画面卡顿
- 用于报告显示模式、HDR 格式和环绕声格式的经过认证的 API 准确性
界面
- 使用
RenderEffect和WindowManager进行背景模糊处理 - 4K 界面支持
- 字体大小的无障碍功能设置
隐私权和安全
HDMI 和调谐器
- 支持 HDMI-CEC 2.0
- 支持 DTMB 和性能改进的调谐器 HAL 1.1
- 借助 Tuner Service 改进保护模型
如需查看 Android 12 中包含的变更的完整列表，请参阅 Android 12 文档。请注意，并非所有功能都适用于电视。
下载 ADT-3 开发者套件的系统映像即可开始使用。或者，您也可以使用 Android TV 模拟器，通过该模拟器，您可以试用一些新的界面功能，例如背景模糊处理和 4K 界面支持。
如何开始使用
如果您已有 ADT-3 开发者设备，该设备将自动收到 Android 12 的 OTA 更新。或者，您也可以按照以下步骤安装 Android 12：
- 使用适用于 Android TV 的 ADT-3 开发者套件。提供的系统映像仅适用于 ADT-3 开发者设备。
- 下载系统映像。
- 在 ADT-3 设备上安装系统映像。
手动安装系统映像
您可以下载最新的 Android 12 系统映像，并将其手动刷入测试设备。手动刷写设备可让您精确控制测试环境，并且可以使用命令行工具执行。
备份设备数据后，下载以下 ADT-3 build 之一，然后将映像刷写到设备上。
ADT-3 出厂映像
| 设备 | 下载链接 | SHA-256 校验和 |
|---|---|---|
| ADT-3（Android TV） | 9310b47c79570cb5a9916ac4f7fe383c62242afea64a2d389aa27ea4f9555a35 |
|
| ADT-3（Google TV） | 91f7efe7cccfc507a80366c0edb32991df931620ecfc7d2aa765e7b233dc01f1 |
下载 ADT-3 factory system image
您必须先接受以下条款及条件才能下载。
条款及条件
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.
下载 ADT-3 factory system image
您必须先接受以下条款及条件才能下载。
条款及条件
By clicking to accept, you hereby agree to the following:All use of this development version SDK will be governed by the Android Software Development Kit License Agreement (available at https://developer.android.com/studio/terms and such URL may be updated or changed by Google from time to time), which will terminate when Google issues a final release version.
Your testing and feedback are important part of the development process and by using the SDK, you acknowledge that (i) implementation of some features are still under development, (ii) you should not rely on the SDK having the full functionality of a stable release; (iii) you agree not to publicly distribute or ship any application using this SDK as this SDK will no longer be supported after the official Android SDK is released; and (iv) you agree that Google may deliver elements of the SDK to your devices via auto-update (OTA or otherwise, in each case as determined by Google).
WITHOUT LIMITING SECTION 10 OF THE ANDROID SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT, YOU UNDERSTAND THAT A DEVELOPMENT VERSION OF A SDK IS NOT A STABLE RELEASE AND MAY CONTAIN ERRORS, DEFECTS AND SECURITY VULNERABILITIES THAT CAN RESULT IN SIGNIFICANT DAMAGE, INCLUDING THE COMPLETE, IRRECOVERABLE LOSS OF USE OF YOUR COMPUTER SYSTEM OR OTHER DEVICE.