How to perform long run operation with ActivityIndicator

Question

Hi,

How to perform long run operation with ActivityIndicator?

Thanks,

Answer 1

Hello,

If you have a Async/Await method to perform long run operation.

And you added the <ActivityIndicator x:Name="MyAi" /> in your layout.

If you have a button, then click the button to download file. Before you start download the file, set IsRunning = true;, If downloaded operation finished (I add Task.Delay(6000) to simulate downloaded operation), use ContinueWith and set IsRunning = false to make the <ActivityIndicator > disappear the in the MainThread.

private async void DownloadBtn_Clicked(object sender, EventArgs e)
{
     MyAi.IsRunning = true;
     await Task.Delay(6000).ContinueWith(t => {


        MainThread.InvokeOnMainThreadAsync(() => {
             MyAi.IsRunning = false;
         });


    });
}

Best Regards,

Leon Lu

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