package Ġsample . study . happy twitter . presentation . user tweets . find user Ċ Ċ import Ġsample . study . happy twitter . base . m vi . I ViewState Ċ import Ġsample . study . happy twitter . base . network . Networking ViewState Ċ import Ġsample . study . happy twitter . data . twitter . Twitter User Ċ Ċ data Ġclass ĠFind User ViewState ( ĊĠĠĠ Ġval Ġtwitter User : ĠTwitter User ? Ġ= Ġnull , ĊĠĠĠ Ġval Ġis UserName Valid : ĠBoolean Ġ= Ġfalse , ĊĠĠĠ Ġval Ġsearch User Networking : ĠNetwork ing ViewState Ġ= ĠNetwork ing ViewState . Idle Ċ ) Ġ: ĠI ViewState Ġ{ ĊĠ Ġval Ġis Search Enabled : ĠBoolean ĊĠĠĠ Ġget () Ġ= Ġis UserName Valid Ġ&& Ġsearch User Networking Ġ!= ĠNetwork ing ViewState . Loading ĊĊĠ Ġcompanion Ġobject Ġ{ ĊĠĠĠ Ġconst Ġval ĠERROR _ USER _ NOT _ FOUND Ġ= Ġ" ERROR _ USER _ NOT _ FOUND " ĊĠĠĠ Ġconst Ġval ĠERROR _ USER _ DISABLED Ġ= Ġ" ERROR _ USER _ DISABLED " ĊĠ Ġ} Ċ }