Xamarin.Forms - How to overlay an ActivityIndicator in the middle of a StackLayout programmatically

Question

I want to overlay my ActivityIndicator in the middle of my form but I\'m not entirely sure how I can go about this, I assume I need to wrap my stack layout in a relative lay

Answer 1

If you have problems with RelativeLayout, you can also use AbsoluteLayout which works in a similar context. Sample code below:

var overlay = new AbsoluteLayout();
var content = new StackLayout();
var loadingIndicator = new ActivityIndicator();
AbsoluteLayout.SetLayoutFlags(content, AbsoluteLayoutFlags.PositionProportional);
AbsoluteLayout.SetLayoutBounds(content, new Rectangle(0f, 0f, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize));
AbsoluteLayout.SetLayoutFlags(loadingIndicator, AbsoluteLayoutFlags.PositionProportional);
AbsoluteLayout.SetLayoutBounds(loadingIndicator, new Rectangle(0.5, 0.5, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize));
overlay.Children.Add(content);
overlay.Children.Add(loadingIndicator);

If you would like a full working example, I have made one available @ https://github.com/teamtam/xamarin-forms-timesheet