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[samples/HelloWorld] Add Hello World sample.
Update README.md to describe how to build, install, and run the sample.
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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". | ||
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| These files will be deployed with your package and will be accessible using Android's | ||
| AssetManager, like this: | ||
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| public class ReadAsset : Activity | ||
| { | ||
| protected override void OnCreate (Bundle bundle) | ||
| { | ||
| base.OnCreate (bundle); | ||
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| InputStream input = Assets.Open ("my_asset.txt"); | ||
| } | ||
| } | ||
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| Additionally, some Android functions will automatically load asset files: | ||
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| Typeface tf = Typeface.CreateFromAsset (Context.Assets, "fonts/samplefont.ttf"); |
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| <?xml version="1.0" encoding="utf-8"?> | ||
| <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
| <PropertyGroup> | ||
| <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
| <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> | ||
| <ProjectGuid>{2305B00D-DE81-4744-B0DA-357835CAFE5A}</ProjectGuid> | ||
| <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> | ||
| <OutputType>Library</OutputType> | ||
| <RootNamespace>HelloWorld</RootNamespace> | ||
| <AssemblyName>HelloWorld</AssemblyName> | ||
| <TargetFrameworkVersion>v5.0</TargetFrameworkVersion> | ||
| <AndroidApplication>True</AndroidApplication> | ||
| <AndroidResgenFile>Resources\Resource.designer.cs</AndroidResgenFile> | ||
| <AndroidResgenClass>Resource</AndroidResgenClass> | ||
| <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest> | ||
| <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix> | ||
| <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix> | ||
| <AndroidUseLatestPlatformSdk>true</AndroidUseLatestPlatformSdk> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> | ||
| <DebugSymbols>true</DebugSymbols> | ||
| <DebugType>full</DebugType> | ||
| <Optimize>false</Optimize> | ||
| <OutputPath>bin\Debug</OutputPath> | ||
| <DefineConstants>DEBUG;</DefineConstants> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| <ConsolePause>false</ConsolePause> | ||
| <AndroidLinkMode>None</AndroidLinkMode> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> | ||
| <Optimize>true</Optimize> | ||
| <OutputPath>bin\Release</OutputPath> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| <ConsolePause>false</ConsolePause> | ||
| <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Reference Include="System" /> | ||
| <Reference Include="System.Xml" /> | ||
| <Reference Include="System.Core" /> | ||
| <Reference Include="Mono.Android" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <Compile Include="MainActivity.cs" /> | ||
| <Compile Include="Resources\Resource.designer.cs" /> | ||
| <Compile Include="Properties\AssemblyInfo.cs" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <None Include="Resources\AboutResources.txt" /> | ||
| <None Include="Properties\AndroidManifest.xml" /> | ||
| <None Include="Assets\AboutAssets.txt" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <AndroidResource Include="Resources\layout\Main.axml" /> | ||
| <AndroidResource Include="Resources\values\Strings.xml" /> | ||
| <AndroidResource Include="Resources\mipmap-hdpi\Icon.png" /> | ||
| <AndroidResource Include="Resources\mipmap-mdpi\Icon.png" /> | ||
| <AndroidResource Include="Resources\mipmap-xhdpi\Icon.png" /> | ||
| <AndroidResource Include="Resources\mipmap-xxhdpi\Icon.png" /> | ||
| <AndroidResource Include="Resources\mipmap-xxxhdpi\Icon.png" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <Folder Include="Resources\drawable\" /> | ||
| </ItemGroup> | ||
| <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" /> | ||
| </Project> |
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| using Android.App; | ||
| using Android.Widget; | ||
| using Android.OS; | ||
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| namespace HelloWorld | ||
| { | ||
| [Activity ( | ||
| Icon = "@mipmap/icon", | ||
| Label = "HelloWorld", | ||
| MainLauncher = true, | ||
| Name = "example.MainActivity")] | ||
| public class MainActivity : Activity | ||
| { | ||
| int count = 1; | ||
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| protected override void OnCreate (Bundle savedInstanceState) | ||
| { | ||
| base.OnCreate (savedInstanceState); | ||
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| // Set our view from the "main" layout resource | ||
| SetContentView (Resource.Layout.Main); | ||
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| // Get our button from the layout resource, | ||
| // and attach an event to it | ||
| Button button = FindViewById<Button> (Resource.Id.myButton); | ||
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| button.Click += delegate { button.Text = string.Format ("{0} clicks!", count++); }; | ||
| } | ||
| } | ||
| } | ||
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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.xamarin.android.helloworld"> | ||
| <uses-sdk android:minSdkVersion="21" /> | ||
| <application android:allowBackup="true" android:icon="@mipmap/icon" android:label="@string/app_name"> | ||
| </application> | ||
| </manifest> |
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| using System.Reflection; | ||
| using System.Runtime.CompilerServices; | ||
| using Android.App; | ||
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| // Information about this assembly is defined by the following attributes. | ||
| // Change them to the values specific to your project. | ||
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| [assembly: AssemblyTitle ("HelloWorld")] | ||
| [assembly: AssemblyDescription ("")] | ||
| [assembly: AssemblyConfiguration ("")] | ||
| [assembly: AssemblyCompany ("Xamarin Inc.")] | ||
| [assembly: AssemblyProduct ("")] | ||
| [assembly: AssemblyCopyright ("Xamarin Inc.")] | ||
| [assembly: AssemblyTrademark ("Xamarin")] | ||
| [assembly: AssemblyCulture ("")] | ||
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| // The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}". | ||
| // The form "{Major}.{Minor}.*" will automatically update the build and revision, | ||
| // and "{Major}.{Minor}.{Build}.*" will update just the revision. | ||
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| [assembly: AssemblyVersion ("1.0.0")] | ||
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| // The following attributes are used to specify the signing key for the assembly, | ||
| // if desired. See the Mono documentation for more information about signing. | ||
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| //[assembly: AssemblyDelaySign(false)] | ||
| //[assembly: AssemblyKeyFile("")] | ||
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| Original file line number | Diff line number | Diff line change |
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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. | ||
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| For example, a sample Android app that contains a user interface layout (main.axml), | ||
| an internationalization string table (strings.xml) and some icons (drawable-XXX/icon.png) | ||
| would keep its resources in the "Resources" directory of the application: | ||
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| Resources/ | ||
| drawable/ | ||
| icon.png | ||
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| layout/ | ||
| main.axml | ||
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| values/ | ||
| strings.xml | ||
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| 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 "R" | ||
| (this is an Android convention) that contains the tokens for each one of the resources | ||
| included. For example, for the above Resources layout, this is what the R class would expose: | ||
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| public class R { | ||
| public class drawable { | ||
| public const int icon = 0x123; | ||
| } | ||
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| public class layout { | ||
| public const int main = 0x456; | ||
| } | ||
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| public class strings { | ||
| public const int first_string = 0xabc; | ||
| public const int second_string = 0xbcd; | ||
| } | ||
| } | ||
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| You would then use R.drawable.icon to reference the drawable/icon.png file, or R.layout.main | ||
| to reference the layout/main.axml file, or R.strings.first_string to reference the first | ||
| string in the dictionary file values/strings.xml. |
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