jMQTT - Official Android MQTT client

The B4J jMQTT library is fully compatible with B4A: http://ift.tt/1OFDwzt

A tutorial about MQTT: [IoT] MQTT Protocol

Implementation of the same example is attached (you need to set the user name and password if you like to test it).
Note that this example depends on RandomAccessFile v2.1+:...

jMQTT - Official Android MQTT client

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