package Ġcom . dev master team . constraint layout Ċ Ċ import Ġandroidx . appcompat . app . AppCompatActivity Ċ import Ġandroid . os . Bundle Ċ Ċ class ĠChain Activity Ġ: ĠAppCompatActivity () Ġ{ ĊĠĠĠ Ġoverride Ġfun ĠonCreate ( savedInstanceState : ĠBundle ?) Ġ{ ĊĠĠĠĠĠĠĠ Ġsuper . onCreate ( savedInstanceState ) ĊĠĠĠĠĠĠĠ ĠsetContentView ( R . layout . activity _ chain ) ĊĠĠĠ Ġ} Ċ }