New sample. (#674)

Author: davidbritch

Navigation/TabbedPageSVGIcons/README.md

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+---
+name: Xamarin.Forms - TabbedPage with vector graphic tab icons
+description: "This sample demonstrates how to display SVG files as tab icons in a Xamarin.Forms TabbedPage (navigation)"
+page_type: sample
+languages:
+- csharp
+products:
+- xamarin
+urlFragment: navigation-tabbedpagewithsvgtabicons
+---
+# Xamarin.Forms TabbedPage with SVG tab icons
+
+This sample demonstrates how to display Scalable Vector Graphic (SVG) files as tab icons in a Xamarin.Forms [`TabbedPage`](xref:Xamarin.Forms.TabbedPage).
+
+For more information about this sample, see [Xamarin.Forms TabbedPage](https://docs.microsoft.com/xamarin/xamarin-forms/app-fundamentals/navigation/tabbed-page).
+
+![TabbedPage application screenshot](Screenshots/01All.png "TabbedPage application screenshot")

Navigation/TabbedPageSVGIcons/Screenshots/01All.png

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+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");

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Assets/AboutAssets.txt

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+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace TabbedPageSVGIcons.Droid
+{
+    [Activity(Label = "TabbedPageSVGIcons", 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)
+        {
+            TabLayoutResource = Resource.Layout.Tabbar;
+            ToolbarResource = Resource.Layout.Toolbar;
+
+            base.OnCreate(savedInstanceState);
+            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
+            LoadApplication(new App());
+        }
+    }
+}

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/MainActivity.cs

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+<?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.tabbedpagesvgicons">
+	<uses-sdk android:minSdkVersion="21" />
+	<application android:label="TabbedPageSVGIcons.Android" android:theme="@style/MainTheme"></application>
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Properties/AndroidManifest.xml

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+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("TabbedPageSVGIcons.Android")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("TabbedPageSVGIcons.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)]

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Properties/AssemblyInfo.cs

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+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.

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Resources/AboutResources.txt

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+<vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt"
+    android:viewportWidth="512.034"
+    android:viewportHeight="512.034"
+    android:width="512.034dp"
+    android:height="512.034dp">
+    <path
+        android:pathData="M362.684 192.034H149.35c-5.888 0 -10.667 4.779 -10.667 10.667v170.667c0 25.771 18.347 47.296 42.667 52.267v54.4c0 17.643 14.357 32 32 32 17.643 0 32 -14.357 32 -32v-53.333h21.333v53.333c0 17.643 14.357 32 32 32s32 -14.357 32 -32v-54.4c24.32 -4.949 42.667 -26.496 42.667 -52.267V202.701C373.35 196.792 368.572 192.034 362.684 192.034zM311.846 56.845l17.984 -41.963c2.325 -5.419 -0.192 -11.669 -5.611 -13.995 -5.355 -2.347 -11.691 0.171 -13.995 5.611l-17.984 41.984c-11.413 -3.712 -23.573 -5.781 -36.203 -5.781 -12.629 0 -24.789 2.069 -36.203 5.781L201.809 6.498c-2.304 -5.44 -8.64 -7.979 -13.995 -5.611 -5.419 2.325 -7.915 8.597 -5.589 13.995l17.984 41.963c-36.629 19.883 -61.525 58.688 -61.525 103.189 0 5.888 4.779 10.667 10.667 10.667h213.333c5.888 0 10.667 -4.779 10.667 -10.667C373.35 115.533 348.454 76.728 311.846 56.845zM213.35 128.034c-5.888 0 -10.667 -4.779 -10.667 -10.667s4.779 -10.667 10.667 -10.667 10.667 4.779 10.667 10.667S219.238 128.034 213.35 128.034zM298.684 128.034c-5.888 0 -10.667 -4.779 -10.667 -10.667s4.779 -10.667 10.667 -10.667 10.667 4.779 10.667 10.667S304.572 128.034 298.684 128.034zM426.684 192.034c-17.643 0 -32 14.357 -32 32v106.667c0 17.643 14.357 32 32 32 17.643 0 32 -14.357 32 -32V224.034C458.684 206.392 444.327 192.034 426.684 192.034zM85.35 192.034c-17.643 0 -32 14.357 -32 32v106.667c0 17.643 14.357 32 32 32 17.643 0 32 -14.357 32 -32V224.034C117.35 206.392 102.993 192.034 85.35 192.034z"
+        android:fillColor="#000000" />
+</vector>

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Resources/drawable/ic_android.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt"
+    android:viewportWidth="512"
+    android:viewportHeight="512"
+    android:width="512dp"
+    android:height="512dp">
+    <path
+        android:pathData="M185.255 512c-76.201 -0.439 -139.233 -155.991 -139.233 -235.21 0 -129.404 97.075 -157.734 134.487 -157.734 16.86 0 34.863 6.621 50.742 12.48 11.104 4.087 22.588 8.306 28.975 8.306 3.823 0 12.832 -3.589 20.786 -6.738 16.963 -6.753 38.071 -15.146 62.651 -15.146 0.044 0 0.103 0 0.146 0 18.354 0 74.004 4.028 107.461 54.272l7.837 11.777 -11.279 8.511c-16.113 12.158 -45.513 34.336 -45.513 78.267 0 52.031 33.296 72.041 49.292 81.665 7.061 4.248 14.37 8.628 14.37 18.208 0 6.255 -49.922 140.566 -122.417 140.566 -17.739 0 -30.278 -5.332 -41.338 -10.034 -11.191 -4.761 -20.845 -8.862 -36.797 -8.862 -8.086 0 -18.311 3.823 -29.136 7.881C221.496 505.73 204.752 512 185.753 512H185.255zM351.343 0c1.888 68.076 -46.797 115.304 -95.425 112.342C247.905 58.015 304.54 0 351.343 0z"
+        android:fillColor="#000000" />
+</vector>

Navigation/TabbedPageSVGIcons/TabbedPageSVGIcons.Android/Resources/drawable/ic_apple.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#000000"
+        android:pathData="M0 80L0 240 224 240 224 52zM256 48L256 240 512 240 512 16zM256 272L256 464 512 496 512 272zM0 272L0 432 224 460 224 272z" />
+</vector>