Introduction
This article demonstrates the Run and Stop activity indicator in Xamarin.Forms application.
Let's start.
Step 1
Open Visual Studio and go to New Project >> Installed >> Visual C# >> Cross-Platform.
Select Cross-Platform app, then give your project a name and location.
Step 2
Update the following NuGet Packages to your project.
  • Xamarin.Forms

Now, select the following NuGet Packages and select your project to update the packages.
Step 3
Open Solution Explorer >> Project Name (Portable) >> MainPage.xaml. Open the design view of this page.
The code is given below.
Xaml Code
We are creating an activity indicator in AbsoluteLayout and a button inside the StackLayout. Two buttons are created -- one button in "Run" and the second button in "Stop".
  1. <?xml version="1.0" encoding="utf-8" ?>
  2. <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
  3. xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
  4. xmlns:local="clr-namespace:Activity_Indicator"
  5. x:Class="Activity_Indicator.MainPage">
  6. <ContentPage.Content>
  7. <StackLayout HorizontalOptions="Center" VerticalOptions="Center">
  8. <AbsoluteLayout>
  9. <ActivityIndicator x:Name="activity"
  10. IsRunning="False"
  11. IsEnabled="False"
  12. IsVisible="False"
  13. Color="Blue"
  14. BackgroundColor="Transparent"/>
  15. </AbsoluteLayout>
  16. <Button Text="Run" Clicked="Button_Clicked"/>
  17. <Button Text="Stop" Clicked="Button_Clicked_1"/>
  18. </StackLayout>
  19. </ContentPage.Content>
  20. </ContentPage>
Step 4
Open Solution Explorer >> Project Name (Portable) >> MainPage.xaml.cs. Open the design view of this page.
The code is given below.
C# Code
  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.Threading.Tasks;
  6. using Xamarin.Forms;
  8. namespace Activity_Indicator
  9. {
  10. public partial class MainPage : ContentPage
  11. {
  12. public MainPage()
  13. {
  14. InitializeComponent();
  15. }
  17. private void Button_Clicked(object sender, EventArgs e)
  18. {
  19. activity.IsEnabled = true;
  20. activity.IsRunning = true;
  21. activity.IsVisible = true;
  22. }
  24. private void Button_Clicked_1(object sender, EventArgs e)
  25. {
  26. activity.IsEnabled = false;
  27. activity.IsRunning = false;
  28. activity.IsVisible = false;
  29. }
  30. }
  31. }
Step 5
Next, select the build & deploy option, followed by selecting from the list of Android Emulator or Simulator. You can choose any API (Android Program Interface) Level Emulator or Simulator to run it.
Output
After a few seconds, you will see your app working.
Output 1
Click the "Run" Button and run the activity indicator.
Output 2
Click the "Stop" Button to stop the activity indicator.
Output 3
The result is displayed.
Finally, we have successfully created a Xamarin.Forms Run and Stop Activity Indicator.