charany1/mqtt-subscriber

An Android app to demonstrate MQTT subscribe using Paho Android MQTT Library .

MQTT-Subscriber-

An app to demonstrate MQTT subscribe using Paho Android MQTT Library .

##Usage

1.Clone project in Android Studio .

2.Open MainActivity.java and substitute your MQTT Username and password you got from CloudMQTT Dashboard .(See below)

3.Download [MQTTLens] (https://chrome.google.com/webstore/detail/mqttlens/hemojaaeigabkbcookmlgmdigohjobjm?hl=en)

4.In MainActivity.java ,put a topic you want app to subscribe to . (For e.g. door/status)

5.In MQTTLens ,create a new connection , name it anything you want (say CloudMQTT Broker) and substitute username,password ,URL and Port number as you get from CloudMQTT Control Pannel

6.Now in MQTT Lens , put the same topic in Publish Topic field to which you subscribed to in app in step 4 .

7.Put "open" and click publish and then "close" and click publish .

##CloudMQTT

CloudMQTT is hosted MQTT broker , for testing and learning purpose it's free tier is enough and I find it better compared to using HiveMQ or Eclipse.

Just sign up and opt for free tier plan and get required credentials from CloudMQTT Control Pannel

mqtt-subscriber's Issues

cannot subscribe !

nullpointerexception accures when tryung to sub.
have you maneged to solve this problam?

onFailure

I use user name, password, mqtt server path and port from Instance info.
But it could not connect.
Could you please tell me details which (username, password, server path, port) should I modify?

Thank you very much.