Install openfire or any chat server in your system or on server. For more details click here.
Create android project and add these libraries in gradle:
compile 'org.igniterealtime.smack:smack-android:4.2.0'
compile 'org.igniterealtime.smack:smack-tcp:4.2.0'
compile 'org.igniterealtime.smack:smac...
