This mqtt demo
MQTT 3.1 ✔️ MQTT 3.1.1 ✔️
基于 org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.1
适配 android31
dependencies { implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.1' implementation 'io.github.muxiaolin.component:org.eclipse.paho.android.service:1.1.4' }