package Ġcom . ren yu . architecture demo . navigation Ċ Ċ import Ġandroid . os . Bundle Ċ import Ġandroid . support . v 7 . app . AppCompatActivity Ċ import Ġcom . ren yu . architecture demo . R Ċ Ċ class ĠNavigation Activity Ġ: ĠAppCompatActivity () Ġ{ ĊĊĠĠĠ Ġoverride Ġfun ĠonCreate ( savedInstanceState : ĠBundle ?) Ġ{ ĊĠĠĠĠĠĠĠ Ġsuper . onCreate ( savedInstanceState ) ĊĠĠĠĠĠĠĠ ĠsetContentView ( R . layout . activity _ navigation ) ĊĠĠĠ Ġ} Ċ Ċ }