Open A Web Link With Default Browser In Xamarin Forms Application Using Xamarin Essentials For Android And UWP

The Browser class is available at Xamarin.Essentials API. It is used to enable an application to open the web link in the default browser. Android, iOS, and UWP offer unique operating system and platform APIs that developers have access to all in C# leveraging Xamarin. Xamarin.Essentials provides a single cross-platform API that works with any Xamarin.Forms, Android, iOS, or UWP application that can be accessed from shared code no matter how the user interface is created.

Reading this article, you can learn how to open a web link with default Browser in Xamarin Forms application using Xamarin Essentials for Android and Universal Windows Platform with XAML and Visual C# in cross-platform application development.

The following important tools are required for developing Xamarin Forms App,

Windows 10 (Recommended)
Visual Studio 2017
Android API 19 or higher and UWP 10.0.16299.0 or higher

Now, we can discuss step-by-step app development.

Step 1

Open Visual Studio 2017 -> Start -> New Project-> Select Cross-Platform (under Visual C#-> Mobile App (Xamarin.Forms)-> Give the Suitable Name for your App (XamFormBrowser) ->OK.

Open A Web Link With Default Browser In Xamarin Forms Application Using Xamarin Essentials For Android And UWP

Step 2

Select the Cross-Platform template as a Blank APP ->Set Platform as Android and UWP and code sharing strategy as .NET standard, Afterwards, Visual Studio creates 3 projects (Portable, Android, UWP).

Step 3

For adding a reference,

Right-Click Your solution (XamFormBrowser) and Select Manage NuGet Packages.

For adding Xamarin.Essentials Reference, Choose Browse and Search Xamarin.Essentials, select the package and select all the projects (portable, Android, UWP) and install it.

Step 4

Add the Label, Entry and Button controls in Mainpage.Xaml for displaying Title and weblink and browse button.

<Label FontAttributes="Bold" Text=" Open a web link using default Browser in Xamarin Forms application using Xamarin Essentials for Android and UWP" VerticalOptions="Center" HorizontalOptions="Center"/>
<Entry x:Name="entURL" Placeholder="Enter the URL to open here"></Entry>
<Button x:Name="btnBrowse" Text="Click to Browse" Clicked="btnBrowse_Click"/>

Step 5

Add the following code in the MainActivity.cs in XamFormBrowser.Android project,

In onCreate() method,

Xamarin.Essentials.Platform.Init(this, savedInstanceState);

Also add the below method,

publicoverridevoid OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults) {
Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}

Step 6

Add the following namespace and code in Mainpage.Xaml.cs

using Xamarin.Essentials;
protectedoverridevoid OnAppearing() {
base.OnAppearing();
}
async Task btnBrowse_Click(object sender, System.EventArgs e) {
uri = new Uri(entURL.Text);
await Browser.OpenAsync(uri, BrowserLaunchMode.SystemPreferred);
}

Note
Automatically the following code will be generated in XAML code view, while we are done in the design view.

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:local="clr-namespace:XamFormBrowser" x:Class="XamFormBrowser.MainPage">
<StackLayout>
<Label FontAttributes="Bold" Text=" Open a web link using default Browser in Xamarin Forms application using Xamarin Essentials for Android and UWP" VerticalOptions="Center" HorizontalOptions="Center" />
<Entry x:Name="entURL" Placeholder="Enter the URL to open here"></Entry>
<Button x:Name="btnBrowse" Text="Click to Browse" Clicked="btnBrowse_Click" />
</StackLayout>
</ContentPage>

Step 7

Deploy of your App in UWP and Android , The output of the XamFormBrowser App is,

Summary

Now, you have successfully opened a web link using default Browser in Xamarin Forms application using Xamarin Essentials for Android and Universal Windows Platform using Visual C# and Xamarin.