Fingerprint authentication added.

QRBee/QRBee.Android/MainActivity.cs

@@ -6,6 +6,7 @@ using Android.Runtime;
 using Android.OS;
 using Android.Support.V4.Content;
 using AndroidX.Core.App;
+using Plugin.Fingerprint;
 
 namespace QRBee.Droid
 {
@@ -18,9 +19,13 @@ namespace QRBee.Droid
             base.OnCreate(savedInstanceState);
 
             Xamarin.Essentials.Platform.Init(this, savedInstanceState);
+
+            CrossFingerprint.SetCurrentActivityResolver(()=>Xamarin.Essentials.Platform.CurrentActivity);
+
             global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
             LoadApplication(new App());
             ZXing.Mobile.MobileBarcodeScanner.Initialize(Application);
+
             if (ContextCompat.CheckSelfPermission(this, Manifest.Permission.Camera) == (int) Permission.Granted)
             {
                 
@@ -28,6 +33,7 @@ namespace QRBee.Droid
             else
             {
                 ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.Camera }, 0);
+                // ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.UseFingerprint }, 0);
             }
 
         }

QRBee/QRBee.Android/Properties/AndroidManifest.xml

@@ -4,4 +4,5 @@
 	<application android:label="QRBee.Android" android:theme="@style/MainTheme"></application>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 	<uses-permission android:name="android.permission.CAMERA" />
+	<uses-permission android:name="android.permission.USE_FINGERPRINT" />
 </manifest>

QRBee/QRBee.Android/QRBee.Android.csproj

@@ -59,6 +59,9 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Plugin.Fingerprint">
+      <Version>2.1.4</Version>
+    </PackageReference>
     <PackageReference Include="Xamarin.Android.Support.Compat">
       <Version>28.0.0.3</Version>
     </PackageReference>

QRBee/QRBee.iOS/QRBee.iOS.csproj

@@ -132,6 +132,9 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Plugin.Fingerprint">
+      <Version>2.1.4</Version>
+    </PackageReference>
     <PackageReference Include="Xamarin.Forms" Version="5.0.0.2244" />
     <PackageReference Include="Xamarin.Essentials" Version="1.7.0" />
     <PackageReference Include="ZXing.Net.Mobile">

QRBee/QRBee/QRBee.csproj

@@ -6,6 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Plugin.Fingerprint" Version="2.1.4" />
     <PackageReference Include="Xamarin.Forms" Version="5.0.0.2244" />  
     <PackageReference Include="Xamarin.Essentials" Version="1.7.0" />  
     <PackageReference Include="ZXing.Net.Mobile" Version="2.4.1" />  

QRBee/QRBee/ViewModels/LoginViewModel.cs

@@ -2,6 +2,8 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using Plugin.Fingerprint;
+using Plugin.Fingerprint.Abstractions;
 using Xamarin.Forms;
 
 namespace QRBee.ViewModels
@@ -28,8 +30,27 @@ namespace QRBee.ViewModels
         /// <param name="obj"></param>
         private async void OnLoginClicked(object obj)
         {
-            // Prefixing with `//` switches to a different navigation stack instead of pushing to the active one
+            bool isFingerprintAvailable = await CrossFingerprint.Current.IsAvailableAsync(false);
-            await Shell.Current.GoToAsync($"//{nameof(MainPage)}");
+            if (!isFingerprintAvailable)
+            {
+                //Insert PIN
+                return;
+            }
+
+            var conf = new AuthenticationRequestConfiguration("Authentication", "Authenticate access to your personal data");
+
+            var authResult = await CrossFingerprint.Current.AuthenticateAsync(conf);
+            if (authResult.Authenticated)
+            {
+                //Success  
+                // Prefixing with `//` switches to a different navigation stack instead of pushing to the active one
+                await Shell.Current.GoToAsync($"//{nameof(MainPage)}");
+            }
+            else
+            {
+                //Failure
+                return;
+            }
         }
 
         /// <summary>

QRBee/QRBee/Views/LoginPage.xaml

@@ -10,13 +10,13 @@
     <ContentPage.Content>
 
         <StackLayout Padding="10,0,10,0" VerticalOptions="Center">
-            <StackLayout Orientation="Vertical">
+            <!-- <StackLayout Orientation="Vertical"> -->
-                <Label Text="Login: " Padding="5,10,0,0"/>
+            <!--     <Label Text="Login: " Padding="5,10,0,0"/> -->
-                <Entry HorizontalOptions="FillAndExpand" Keyboard="Text"/>
+            <!--     <Entry HorizontalOptions="FillAndExpand" Keyboard="Text"/> -->
-
+            <!-- -->
-                <Label Text="Password: "  Padding="5,0,0,0" />
+            <!--     <Label Text="Password: "  Padding="5,0,0,0" /> -->
-                <Entry HorizontalOptions="FillAndExpand" IsPassword="True"/>
+            <!--     <Entry HorizontalOptions="FillAndExpand" IsPassword="True"/> -->
-            </StackLayout>
+            <!-- </StackLayout> -->
 
             <Button VerticalOptions="Center" Text="Login" Command="{Binding LoginCommand}"/>
             <Button VerticalOptions="Center" Text="Register new user" Command="{Binding RegisterCommand}"/>