学习-安卓智能手表

0. AndroidWearCall: Use only system calls to implement call function.
1. AndroidWearMessage: Use only system calls to implement sending message function.
2. AndroidWearStep: Use body sensor to record steps.
3. AndroidWearHeart: Use body sensor to measure heart rate.
4. AndroidWearVideo: Apply video frame vitamio to implement the function of playing local video.
5. AndroidWearCompass: Use body sensor to get direction to implement compass.
6. AndroidWearFace: Use android wear watch face service to create a simple homemade watch face.