Xamarin iOS Device OpenUri dont oppening Whatsapp uri scheme

Question

I'm running my Xamarin Cross platform in Iphone and the Device.OpenUri isn't working, this func works as expected in Android platform but in iOS when i click in a whatsapp URI it only reload the page and don't open the Whatsapp APP

i've tried to add "whatsapp" references in LSApplicationQueriesSchemes inside info.plist but unsucessfuly

            Hipnosoftpage.IsVisible = false;
            ErroRede = true;

            DisplayAlert("Sem Conexão", "Verifique sua conexão com a internet.", "Tentar Novamente").ContinueWith(t =>
            {
                Hipnosoftpage.Reload();

            }, TaskScheduler.FromCurrentSynchronizationContext());

        }
        var url = e.Url;
        if (url.StartsWith("whatsapp://", StringComparison.InvariantCultureIgnoreCase))
        {
            try
            {
                Device.OpenUri(new Uri(url));
                Hipnosoftpage.GoBack();
            }
            // Can not catch Android exception type in NetStd/PCL library, so hack it...
            catch (Exception ex) when (ex.Message.StartsWith("No Activity found to handle Intent", StringComparison.InvariantCulture))
            {
                // WhatsApp not installed : Android.Content.ActivityNotFoundException: No Activity found to handle Intent
                Console.WriteLine(ex);
            }
        }



    }

I expect the whatsapp openning, but the Device.OpenUri don't open properly and don't give me any error in debug console.

Could you give us a sample of what url might contain? Clearly it starts with whatsapp:// but what parameters follow — Mouse On Mars, Aug 09 '19 at 20:59
Yes, it's something like http://api.whatsapp.com/send?1=pt_BR&phone=TELNUMBER&text=MESSAGE — Guilherme Nimer, Aug 09 '19 at 21:15
Your url should start with whatsapp://; so do you mean "whatsapp://send?1=pt_BR&phone=TELNUMBER&text=MESSAGE"? — Mouse On Mars, Aug 09 '19 at 21:18
Is your phone installed Whatsapp? Also you have to check the url format. See these threads may help: [whatsapp](https://faq.whatsapp.com/en/iphone/23559013/) and [open-whatsapp](https://stackoverflow.com/questions/40535309/open-whatsapp-on-a-particular-number-in-swift/45351187#45351187) — nevermore, Aug 12 '19 at 03:17

score 0 · Answer 1 · answered Aug 10 '19 at 07:11

0

In order to open whatsapp you would only need the following:

public static void OpenWhatsapp(string phoneNumber, string message = null)
        {
            try
            {
                var uriString = "whatsapp://send?phone=" + phoneNumber;

                if (!string.IsNullOrWhiteSpace(message))
                    uriString += "&text=" + message;

                Device.OpenUri(new Uri(uriString));

            }

Check if your Uri is correctly formed.

answered Aug 10 '19 at 07:11

Bruno Caceiro

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i'll check on monday – Guilherme Nimer Aug 11 '19 at 05:39
i've tried this , the app keeps don't opening the whatsapp – Guilherme Nimer Aug 13 '19 at 19:12

score 0 · Accepted Answer · answered Aug 19 '19 at 17:10

Solved using this plugin:Xamarin.Forms.OpenWhatsApp thanks to Juliano Custodio, and parsing the params in that way.

           `var uri = new Uri(url);
            var query = HttpUtility.ParseQueryString(uri.Query);
            var tel = query.Get("phone");
            var msg = query.Get("text");
            Chat.Open(tel,msg);`

Thanks guys.

Xamarin iOS Device OpenUri dont oppening Whatsapp uri scheme

2 Answers2