我们向 Android 12 添加了更多自定义设置，以改善电视设备的体验和兼容性。TV 的一些亮点包括改进媒体播放、更完善的界面功能，以及隐私和安全性增强。此外，我们还将推出更好的标准来支持和改进 HDMI 和调谐器。
下面简要介绍了适用于 TV 的 Android 12 的新变化：
媒体
- 使用刷新率切换功能避免播放期间出现动作抖动
- 用于报告显示模式、HDR 格式和环绕声格式且经过认证的 API 准确性
界面
- 使用
RenderEffect和WindowManager进行背景模糊处理 - 4K 界面支持
- 字体大小的无障碍设置
隐私保护和安全措施
HDMI 和调谐器
- 支持 HDMI-CEC 2.0
- 支持 DTMB 并提升性能的调谐器 HAL 1.1
- 使用调谐器服务提供更好的保护模型
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 TV。
下载 ADT-3 开发者套件的系统映像即可开始使用。或者，您也可以使用适用于 TV 的 Android 模拟器，试用一些新的界面功能，例如背景模糊处理和 4K 界面支持。
如何迈出第一步
如果您已有 ADT-3 开发者设备，该设备会自动收到 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，并将其手动刷写到测试设备。通过手动刷写设备，您可以精确控制测试环境，并且可以使用命令行工具执行该操作。
在备份设备数据后，请下载以下某个 ADT-3 build，然后将映像刷入您的设备。
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 |
Download ADT-3 factory system image
Before downloading, you must agree to the following terms and conditions.
Terms and Conditions
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.
Download ADT-3 factory system image
Before downloading, you must agree to the following terms and conditions.
Terms and Conditions
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.