1.这个demo里面包含了很多指令，你可以运行这个demo，连接上我们的手环，然后测试手环的功能。
2.如果你想要做自己的APP，你也可以参照我们这个demo，只需要根据蓝牙协议，添加你们自己想要的指令到CommandManager这个类。
1.This demo contains a lot of instructions, you can run this demo, connect to our bracelet, and then test the function of the bracelet. 2.If you want to make your own APP, you can also refer to our demo, which only needs to add the instructions you want according to the bluetooth protocol. (The bluetooth instructions are all in the CommandManager class)