CODEWITHSUNDEEP
c#xamlxamarin.formscross-platform
Lucas F.
Lucas F.

Reputation: 13

Create Activity Indicator with C #

Is it possible to create an activity indicator without using XAML? I have a view already ready in .cs and I did not want to have to recreate it.

Upvotes: 0

Views: 531

Answers (1)

Paul Kertscher
Paul Kertscher

Reputation: 9723

You can create every control that you can create via XAML from code, too. Please see the following example

class MyView : ContentView
{
    AbsoluteLayout _layout;
    ActivityIndicator _activityIndicator;

    void InitializeControls()
    {
        _layout = new AbsoluteLayout();
        this.Content = _layout;

        // ...

        _activityIndicator = new ActivityIndicator();
        AbsoluteLayout.SetLayoutFlags(_activityIndicator, AbsoluteLayoutFlags.PositionProportional);
        AbsoluteLayout.SetLayoutBounds(_activityIndicator, new Rectangle(.5,.5,-1,-1));
        _layout.Children.Add(_activityIndicator);
    }

    async void UpdateData()
    {
        _activityIndicator.IsRunning = true;
        this.Data = GetData();
        _activityIndicator.IsRunning = false;
    }
}

In InitializeControls we are first initializing a layout (an AbsoluteLayout in this case) and later create a new ActivityIndicator. We are setting AbsoluteLayout.LayoutFlags and AbsoluteLayout.LayoutBounds with the AbsoluteLayout.Set... methods (these are setters for attached properties, see here). Last we add the ActivityIndicator to the AbsoluteLayout.

The UpdateData method is a made-up method to show how to use the ActivityIndicator when updating the data of the view. We first set IsRunning on the ActivityIndicator to show it, then fetch the data and last unset IsRunning to hide the `Activity

Upvotes: 1

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