xamarin apps added..

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/App.xaml.cs

@@ -10,7 +10,7 @@ public App()
         {
             InitializeComponent();
 
-            MainPage = new LoginPage();
+            MainPage =new NavigationPage(new LoginPage());
         }
 
         protected override void OnStart()

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/HomePage.xaml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="SimpleLoginApp.HomePage"
+             Title="Home Page"
+             NavigationPage.HasBackButton="False">
+    <ContentPage.Content>
+        <StackLayout>
+            <Label Text="Welcome to Home Page"
+                   x:Name="lblInfo"
+                VerticalOptions="CenterAndExpand" 
+                HorizontalOptions="CenterAndExpand" 
+                   FontSize="Large"/>
+        </StackLayout>
+    </ContentPage.Content>
+</ContentPage>

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/HomePage.xaml.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xamarin.Forms;
+using Xamarin.Forms.Xaml;
+
+namespace SimpleLoginApp
+{
+    [XamlCompilation(XamlCompilationOptions.Compile)]
+    public partial class HomePage : ContentPage
+    {
+        public HomePage(string userName)
+        {
+            InitializeComponent();
+            lblInfo.Text = "Welcome to Home Page " + userName;
+        }
+    }
+}

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/LoginPage.xaml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="SimpleLoginApp.LoginPage">
+             x:Class="SimpleLoginApp.LoginPage"
+             >
     <ContentPage.Content>
         <StackLayout Padding="10"
             VerticalOptions="Center">

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/LoginPage.xaml.cs

@@ -19,7 +19,7 @@ public LoginPage()
             InitializeComponent();
         }
 
-        private void btnLogin_Clicked(object sender, EventArgs e)
+        private async void btnLogin_Clicked(object sender, EventArgs e)
         {
             if (txtUserName.Text == String.Empty||txtUserName.Text==null)
             {
@@ -35,7 +35,8 @@ private void btnLogin_Clicked(object sender, EventArgs e)
             string password = txtPassword.Text;
             if(userName=="faisal"&&password=="1234")
             {
-                CrossToastPopUp.Current.ShowToastSuccess("Login successfull");
+                await Navigation.PushAsync(new HomePage(userName));
+                //CrossToastPopUp.Current.ShowToastSuccess("Login successfull");
                 //DisplayAlert("Success", "Login successfull", "ok");
             }
             else

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/MainPage.xaml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="SimpleLoginApp.MainPage">
+             x:Class="SimpleLoginApp.MainPage"
+             >
 
     <StackLayout>
         <Frame BackgroundColor="#2196F3" Padding="24" CornerRadius="0">

Xamarin/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp/SimpleLoginApp.csproj

@@ -17,6 +17,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <EmbeddedResource Update="HomePage.xaml">
+      <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
+    </EmbeddedResource>
     <EmbeddedResource Update="LoginPage.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
     </EmbeddedResource>

Xamarin/WorkingWithImages/WorkingWithImages.sln

@@ -0,0 +1,83 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31410.357
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkingWithImages.Android", "WorkingWithImages\WorkingWithImages.Android\WorkingWithImages.Android.csproj", "{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkingWithImages.iOS", "WorkingWithImages\WorkingWithImages.iOS\WorkingWithImages.iOS.csproj", "{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkingWithImages", "WorkingWithImages\WorkingWithImages\WorkingWithImages.csproj", "{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|iPhone = Debug|iPhone
+		Debug|iPhoneSimulator = Debug|iPhoneSimulator
+		Release|Any CPU = Release|Any CPU
+		Release|iPhone = Release|iPhone
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhone.Deploy.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Debug|iPhoneSimulator.Deploy.0 = Debug|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|Any CPU.Deploy.0 = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhone.Build.0 = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhone.Deploy.0 = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{6950C0DF-4216-4DE4-AF4C-D9EB90493B9B}.Release|iPhoneSimulator.Deploy.0 = Release|Any CPU
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|Any CPU.ActiveCfg = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|Any CPU.Build.0 = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|Any CPU.Deploy.0 = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhone.ActiveCfg = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhone.Build.0 = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhone.Deploy.0 = Debug|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhoneSimulator.ActiveCfg = Debug|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhoneSimulator.Build.0 = Debug|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Debug|iPhoneSimulator.Deploy.0 = Debug|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|Any CPU.ActiveCfg = Release|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|Any CPU.Build.0 = Release|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|Any CPU.Deploy.0 = Release|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhone.ActiveCfg = Release|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhone.Build.0 = Release|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhone.Deploy.0 = Release|iPhone
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhoneSimulator.ActiveCfg = Release|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
+		{8CC31892-C9BF-43A3-A9FB-CC8B553EF38D}.Release|iPhoneSimulator.Deploy.0 = Release|iPhoneSimulator
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhone.Deploy.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Debug|iPhoneSimulator.Deploy.0 = Debug|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|Any CPU.Deploy.0 = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhone.Build.0 = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhone.Deploy.0 = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{3319C932-01A1-4FD5-B0A8-E160AC56CFD2}.Release|iPhoneSimulator.Deploy.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BCC05597-A0AB-4AFA-B34B-FE5A8CF5F202}
+	EndGlobalSection
+EndGlobal

Xamarin/WorkingWithImages/WorkingWithImages/WorkingWithImages.Android/Assets/AboutAssets.txt

@@ -0,0 +1,19 @@
+Any raw assets you want to be deployed with your application can be placed in
+this directory (and child directories) and given a Build Action of "AndroidAsset".
+
+These files will be deployed with your package and will be accessible using Android's
+AssetManager, like this:
+
+public class ReadAsset : Activity
+{
+    protected override void OnCreate (Bundle bundle)
+    {
+        base.OnCreate (bundle);
+
+        InputStream input = Assets.Open ("my_asset.txt");
+    }
+}
+
+Additionally, some Android functions will automatically load asset files:
+
+Typeface tf = Typeface.CreateFromAsset (Context.Assets, "fonts/samplefont.ttf");

Xamarin/WorkingWithImages/WorkingWithImages/WorkingWithImages.Android/MainActivity.cs

@@ -0,0 +1,28 @@
+using System;
+
+using Android.App;
+using Android.Content.PM;
+using Android.Runtime;
+using Android.OS;
+
+namespace WorkingWithImages.Droid
+{
+    [Activity(Label = "WorkingWithImages", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize )]
+    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
+    {
+        protected override void OnCreate(Bundle savedInstanceState)
+        {
+            base.OnCreate(savedInstanceState);
+
+            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
+            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
+            LoadApplication(new App());
+        }
+        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)
+        {
+            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
+
+            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
+        }
+    }
+}

Xamarin/WorkingWithImages/WorkingWithImages/WorkingWithImages.Android/Properties/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.workingwithimages">
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />
+    <application android:label="WorkingWithImages.Android" android:theme="@style/MainTheme"></application>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

Xamarin/WorkingWithImages/WorkingWithImages/WorkingWithImages.Android/Properties/AssemblyInfo.cs

@@ -0,0 +1,30 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Android.App;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("WorkingWithImages.Android")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("WorkingWithImages.Android")]
+[assembly: AssemblyCopyright("Copyright ©  2014")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+
+// Add some common permissions, these can be removed if not needed
+[assembly: UsesPermission(Android.Manifest.Permission.Internet)]
+[assembly: UsesPermission(Android.Manifest.Permission.WriteExternalStorage)]

Xamarin/WorkingWithImages/WorkingWithImages/WorkingWithImages.Android/Resources/AboutResources.txt

@@ -0,0 +1,50 @@
+Images, layout descriptions, binary blobs and string dictionaries can be included 
+in your application as resource files.  Various Android APIs are designed to 
+operate on the resource IDs instead of dealing with images, strings or binary blobs 
+directly.
+
+For example, a sample Android app that contains a user interface layout (main.xml),
+an internationalization string table (strings.xml) and some icons (drawable-XXX/icon.png) 
+would keep its resources in the "Resources" directory of the application:
+
+Resources/
+    drawable-hdpi/
+        icon.png
+
+    drawable-ldpi/
+        icon.png
+
+    drawable-mdpi/
+        icon.png
+
+    layout/
+        main.xml
+
+    values/
+        strings.xml
+
+In order to get the build system to recognize Android resources, set the build action to
+"AndroidResource".  The native Android APIs do not operate directly with filenames, but 
+instead operate on resource IDs.  When you compile an Android application that uses resources, 
+the build system will package the resources for distribution and generate a class called
+"Resource" that contains the tokens for each one of the resources included. For example, 
+for the above Resources layout, this is what the Resource class would expose:
+
+public class Resource {
+    public class drawable {
+        public const int icon = 0x123;
+    }
+
+    public class layout {
+        public const int main = 0x456;
+    }
+
+    public class strings {
+        public const int first_string = 0xabc;
+        public const int second_string = 0xbcd;
+    }
+}
+
+You would then use R.drawable.icon to reference the drawable/icon.png file, or Resource.layout.main 
+to reference the layout/main.xml file, or Resource.strings.first_string to reference the first 
+string in the dictionary file values/strings.xml.