Ċ package Ġcom . example . l eng ary _ l . wan android todo . util Ċ Ċ import Ġandroid . text . TextUtils Ċ Ċ /** Ċ Ġ* ĠCreated Ġby ĠCod er L eng ary Ċ Ġ*/ Ċ Ċ fun ĠString . isNot Valid (): ĠBoolean Ġ= Ġ( TextUtils . isEmpty ( this )|| this . contains (" Ġ")) ĊĊ