MQTT Eclipse Paho Android App basic

Question

I am a beginner on android and MQTT . I have been trying to figure out how to make an app which send simple messages to the MQTT server(broker). I cant find any simple explanation. Even the sample apps are too complicated to grasp. I know I need the server address, host, client id, user id and password to connect but the question is HOW? Any help will be great, please just try to keep it simple as possible. Thanks!

Answer 1

Here is some tips to make your own mqtt service if you still have a question for this.

1. Server Application - mosquitto

Visit the site to get a binary or source code. then build or install the mosquitto server for your operating system.

2. Running and testing the mosquitto broker.

• Run the mosquitto broker server using command for example,

mosquitto -c $MOSQUITTO_HOME/conf/mosquitto.conf -d > $MOSQUITTO_HOME/log/mosquitto.log

• Test it with the mosquitto_sub and mosquitto_pub executable in the bin directory where you installed the mosquitto broker. my case is here,

mosquitto_sub -h 127.0.0.1 -t /test/1
mosquitto_pub -h 127.0.0.1 -t /test/1 -m "Hello Mosquitt"

3. Paho java client - mqtt client

You can use mqtt clients for the site list using any programming language you are familiar with.

I think you can use java client and android service is the best choice.

The java client might be needed for debugging and the core library.

you can choose either a jframe implementation for the standare jdk or swt-plugin implementation for eclipse ide from the github .

You can also check my customized jframe version of mine . it might be helpful how mqtt message can be published and subscribed by the broker.

4. Paho client for android

Get a source code from github . Be sure to have the core library from the java client library at the step 3. You can use pre-compiled version of this core library from my github . Then, compile and build app with whatever ide tools like eclipse+ADT or android studio(recommended)

You can check the images since successfully installed the paho app and can also refer my customized android app version from github .