Counting Emoji number, Extract all Emoji, SubString with data content contain Emoji, Android counting Emoji, Check String is Emoji character, Android Emoji counter, Emoji Utils
To unit test, you can copy the String contain the following Emoji characters into Edittext & Enjoy:
"ジトトナム人2月ℹ️🏴
Ref to the ShiftJISStringUnitTest.java class to enjoy.