An Android library supports badge notification like iOS in Samsung, LG, Sony and HTC launchers.
'me.leolin:ShortcutBadger:1.0.7'
<dependency>
<groupId>me.leolin</groupId>
<artifactId>ShortcutBadger</artifactId>
<version>1.0.7</version>
</dependency>
<dependency org="me.leolin" name="ShortcutBadger" rev="1.0.7"/>
"me.leolin", "ShortcutBadger", "1.0.7"