I have seen some examples of yours, you set Opacity of SfLisview as below. is there any specific reason or not neccessary.
public MainPage()
{
InitializeComponent();
this.PropertyChanged += Swiping_PropertyChanged;
}
private void Swiping_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == "Width")
{
sfListView.Opacity = 1.0;
}
}