树莓派Android Things物联网开发：已知Bug发行说明
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《树莓派Android Things物联网开发》系列文章专栏 http://blog.csdn.net/column/details/17741.html
树莓派Android Things物联网开发：入门及资料汇总
树莓派Android Things物联网开发：创建一个Things项目
树莓派Android Things物联网开发：树莓派GPIO引脚图
树莓派Android Things物联网开发：按键中断及消抖
树莓派Android Things物联网开发：已知Bug发行说明
树莓派Android Things物联网开发：GitHub案例程序汇总
Android Things刚出来不久还不完善，当前存在一些问题，在技术选型的时候一定要注意以下问题：
Android THings Preview 5.1版发行说明
Known Issues 已知问题
- System power management is currently disabled. Devices will not suspend and wake locks are not necessary.
- 系统电源管理当前不可用.设备不会挂起，所以唤醒锁也不是必需的。
- Google Play Services requires 2-3 minutes on first boot to pre-optimize dex. App installs are blocked until this process is complete.
- 谷歌Play服务需要在开机2-3分钟预先优化DEX。在此过程中，应用安装将被阻塞。
- Input events from user drivers will not wake the display from sleep.
- 用户驱动程序的输入事件将不会唤醒休眠中的显示器。
- Devices cannot currently act as an A2DP audio source over Bluetooth.
- 设备目前无法充当蓝牙A2DP的音频源。
Peripheral I/O 外围I/O
- Peripherals do not clear or reset after calling close(). Outputs will retain their state and serial ports may continue to transmit previously buffered data.
- 调用close()函数后，外围设备将不会清除或重置.输出状态将会保留，串口将继续传输之前缓存的数据。
- GPIO pins cannot be used as an output if they were previously enabled as an input with an edge trigger enabled since the last reboot.
- 不重启的话，之前用于边缘触发输入的GPIO引脚将不能用于输出。
User Drivers 用户驱动
- User sensors cannot currently be unregistered manually. They are unregistered automatically when the app process terminates.
- 用户传感器当前不能被手动注销，应用程序终止时他们会自动注销。
- User sensors only support continuous and on-change sensors. One-shot and special reporting modes may not function as expected.
- 用户传感器只支持连续变化的传感器，单次和特殊报告模式可能无法正常运行。
Raspberry Pi 树莓派(不亦用的是树莓派测试，其他开发板就不译了)
- Audio: Audio quality issues may present when both WiFi and Bluetooth are enabled.
- 音频：当蓝牙和WIFI同时开启时，音频质量可能会出问题。
- Network: Wi-Fi cannot connect to the internet if Ethernet is also connected to a network without internet access.
- 网络：如果使用网线接上无法访问网络，WIFI无法联网。
- Camera: Preview is currently slow to render when using a DSI display.
- 摄像头：使用DSI显示摄像头预览时，渲染特别慢。
- Camera: A new CameraCaptureSession cannot be created with more than one target output surface.
- 摄像头：一个CameraCaptureSession不能同时输出到两个surface上。
- Camera: The first request in any CameraCaptureSession always queues two images. This can cause each subsequent CaptureRequest in the same session to return a buffered frame from a previous capture.
- 摄像头：第一次请求CameraCaptureSession会生成两张图片，这可能导致后续的CaptureRequest从同一会话中获取到之前缓存的图片帧。
- I/O: GPIO pins BCM4, BCM5, and BCM6 are internally pulled up to 3.3V when used as inputs.
- I/O:GPIO引脚BCM4、BCM5和BCM6作为输入时内部上拉到3.3V
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