thing.java

var myBinding: MainActivityBinding? = null;

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        myBinding = DataBindingUtil.setContentView<MainActivityBinding>(this, R.layout.ac_main) as MainActivityBinding


        ///.setContentView(R.layout.ac_main)
        val toolbar = myBinding.toolbar;
        setSupportActionBar(toolbar)


        DrawerBuilder().withActivity(this).build();

        val fab = myBinding.fab;
        fab.setOnClickListener(object : View.OnClickListener {
            override fun onClick(view: View) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG).setAction("Action", null).show()
            }
        })
    }