The project using android things to collect data from device and send the data to android pad via Bluetooth, and send data to server via Mqtt protocol.
//About MQTT configuration 添加依赖
repositories { google() jcenter() maven { url "https://repo.eclipse.org/content/repositories/paho-releases/" } }
注意下面的版本，版本号不对会失败。 implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.0' implementation 'org.eclipse.paho:org.eclipse.paho.android.service:1.1.1'
之后注册服务：