Open Google Wallet Offline using a Button Click

Question

I am trying to use .Net MAUI Project template to build an Android App to Emulate in Pixel 4 - API33 using Android Device Manager. I tried many things in MainPage.xaml.cs to use the button given in the example code for an additional function. I need the button to Open the Google Wallet App if it is installed. I used many different codes and ended up with following error at the end.

System.UriFormatException: 'Invalid URI: The format of the URI could not be determined.'

I used following code block:

using Android.Content;
using Android.Net;
namespace <MyProjectName>;

public partial class MainPage : ContentPage
{
	int count = 0;

	public MainPage()
	{
		InitializeComponent();
	}

	private async void OnCounterClicked(object sender, EventArgs e)
	{
		count++;

		if (count == 1)
			CounterBtn.Text = $"Clicked {count} time";
		else
			CounterBtn.Text = $"Clicked {count} times";

		SemanticScreenReader.Announce(CounterBtn.Text);

		string packageName = "com.google.android.apps.walletnfcrel";
		if (await Launcher.CanOpenAsync(packageName))
		{
            try
            {
                
                Intent intent = new Intent(Intent.ActionView);
                intent.SetData(Android.Net.Uri.Parse("market://details?id=" + packageName));
                intent.SetClassName("com.android.vending", "com.android.vending.AssetBrowserActivity");
                intent.AddFlags(ActivityFlags.NewTask);
                Android.App.Application.Context.StartActivity(intent);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Unable to Open Google Wallet: {ex.Message} ");
            }

        }
        else
        {
            // Google Wallet app is not installed, display an error message or take alternative action
            Console.WriteLine("Google Wallet app is not installed.");
        }

    }
}

Answer 1

Hello,

You can do it by Android.Content.Intent to open Google wallet application.

Here is a simple code that you can add it in your Button Click event.

#if ANDROID
        Intent intent = new Intent();
        intent.SetPackage("com.google.android.apps.walletnfcrel");
        intent.AddFlags(ActivityFlags.NewTask);
       
        Android.App.Application.Context.StartActivity(intent);

#endif

Best Regards,

Leon Lu

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.