protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_mrec_programmatic);
adStatusTextView = FindViewById <TextView>(Resource.Id.status_label);
// Create MRec
adView = new AppLovinAdView(AppLovinAdSize.Mrec, this);
adView.Id = ViewCompat.GenerateViewId();
var mrecConstraintLayout = FindViewById <ConstraintLayout>(Resource.Id.mrec_programmatic_constraint_layout);
var layoutParams = new ConstraintLayout.LayoutParams(AppLovinSdkUtils.DpToPx(this, AppLovinAdSize.Mrec.Width), AppLovinSdkUtils.DpToPx(this, AppLovinAdSize.Mrec.Height));
mrecConstraintLayout.AddView(adView, layoutParams);
var set = new ConstraintSet();
set.Clone(mrecConstraintLayout);
set.Connect(adView.Id, ConstraintSet.Top, mrecConstraintLayout.Id, ConstraintSet.Top, AppLovinSdkUtils.DpToPx(this, 80));
set.CenterHorizontally(adView.Id, mrecConstraintLayout.Id);
set.ApplyTo(mrecConstraintLayout);
var loadButton = FindViewById <Button>(Resource.Id.load_button);
loadButton.Click += LoadButton_Click;
adView.SetAdLoadListener(this);
adView.SetAdDisplayListener(this);
adView.SetAdClickListener(this);
adView.SetAdViewEventListener(this);
}