package Ġcom . example . android _ study . samples . gallery . gallery 2 Ċ Ċ import Ġandroid . os . Bundle Ċ import Ġcom . example . android _ study . R Ċ import Ġcom . example . android _ study ._ base . Base Activity Ċ import Ġcom . example . android _ study ._ base . util . Toolbar Helper Ċ Ċ class ĠGallery 2 Activity Ġ: ĠBase Activity () Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġget Layout Id () Ġ= ĠR . layout . activity _ gallery 2 ĊĠĠĠ Ġinit Ġ{ ĊĠĠĠĠĠĠĠ Ġshow Lifecycle = true ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġoverride Ġfun Ġinit View And Data ( savedInstanceState : ĠBundle ?) Ġ{ ĊĠĠĠĠĠĠĠ ĠToolbar Helper . set Bar ( this ," ç®Ģ æĺĵ çĶ» å» Ĭ 2 ") ĊĠĠĠ Ġ} Ċ }