Setting up the Android SDK for Xamarin.Android
Visual Studio includes an Android SDK Manager that replaces Google's standalone SDK Manager. This guide explains how to use the SDK Manager to download Android SDK tools, platforms, and other components that you need for developing Xamarin.Android apps.
This guide explains how to install and use the Xamarin Android SDK Manager for Visual Studio on Windows (or for Mac).
The Xamarin Android SDK Manager helps you download the latest Android components that you need for developing your Xamarin.Android app. It replaces Google's standalone SDK Manager, which has been deprecated.
Why would you want to use the Xamarin Android SDK Manager instead of SDK Manager that is included with the Android SDK? In version 25.2.3 of the Android SDK Tools package, Google introduced a new tool to maintain the Android SDK. This new tool, sdkmanager, is a command line utility that replaces the standalone UI manager for the Android SDK. Therefore, if you update to SDK Tools version 26.0.1 (required for Android 8.0) or later and you want to continue to manage the Android SDK via a UI interface, you must use the Xamarin Android SDK Manager.
To use the Xamarin Android SDK Manager, you will need the following:
Visual Studio 2017 (Community, Professional, or Enterprise edition). Visual Studio 2017 version 15.5 or later is required.
Visual Studio Tools for Xamarin version 4.5.0 or later.
The Xamarin Android SDK Manager is not compatible with Visual Studio 2015. Users of Visual Studio 2015 should use the SDK Manager tools provided by Google in the Android SDK.
The Xamarin Android SDK Manager also requires the Java Development Kit (which is automatically installed with Xamarin.Android). Xamarin.Android uses JDK 8, which is required if you are developing for API level 24 or greater (JDK 8 also supports API levels earlier than 24). You can continue to use JDK 7 if you are developing specifically for API level 23 or earlier.
Xamarin.Android does not support JDK 9.
The Xamarin SDK Manager can be added to Visual Studio 2017 at installation time. When you install Visual Studio, click Individual Components and scroll down to the Development activities section. Enable Xamarin SDK Manager if it is not already checked:
If you have already installed Visual Studio 2017, see Modify Visual Studio 2017 for instructions on how to modify Visual Studio, then follow the above procedure to enable the Xamarin SDK Manager. If you see a prompt to update the SDK Manager, you can use this same procedure to install the Xamarin SDK Manager.
When you click Tools > Android > Android SDK Manager (as explained next), the Xamarin Android SDK Manager will be launched instead of the Google Android SDK Manager. If you are using an earlier version of the Android SDK that supports Google's standalone Android SDK Manager, installing the Xamarin Android SDK Manager will not create a conflict – you can still launch the standalone Google SDK Manager from outside of Visual Studio to manage the Android SDK.
To start the SDK Manager in Visual Studio, click Tools > Android > Android SDK Manager:
The Xamarin Android SDK Manager opens in the Android SDKs and Tools screen. This screen has two tabs – Platforms and Tools:
The Android SDKs and Tools screen is described in more detail in the following sections.
Android SDK Location
The Android SDK location is configured at the top of the Android SDKs and Tools screen, as seen in the previous image. This location must be configured correctly before the Platforms and Tools tabs will function properly. You may need to set the location of the Android SDK for one or more of the following reasons:
The Xamarin SDK Manager was unable to locate the Android SDK.
You have installed the Android SDK in a alternate (non-default) location.
To set the location of the Android SDK, click the … button to the far right of Android SDK Location. This opens the Browse For Folder dialog to use for navigating to the location of the Android SDK. In the following screenshot, the Android SDK under Program Files (x86)\Android is being selected:
When you click OK, the Xamarin Android SDK Manager will manage the Android SDK that is installed at the selected location.
The Tools tab displays a list of tools and extras. Use this tab to install the Android SDK tools, platform tools, and build tools. Also, you can install the Android Emulator, the low-level debugger (LLDB), the NDK, HAXM acceleration, and Google Play libraries.
For example, to download the Google Android Emulator package, click the check mark next to Android Emulator and click the Apply Changes button:
A dialog may be shown with the message, Some components can be updated. Do you want to update them now? Click Yes. Next, a License acceptance dialog is shown:
Click Accept if you accept the Terms and Conditions. At the bottom of the window, a progress bar indicates download and installation progress. After the installation completes, the Tools tab will show that the selected tools and extras were installed.
The Platforms tab displays a list of platform SDK versions along with other resources (like system images) for each platform.
This screen lists the Android version (such as Android 7.0), the code name (Nougat), the API level (such as 24), and the status (Installed if the platform is installed). You use the Platforms tab to install components for the Android API level that you want to target (for more information about Android versions and API levels, see Understanding Android API Levels).
If all components of a platform are installed, a checkmark appears next to the platform name. If not all components of a platform are installed, the box for that platform is filled.
You can expand a platform to see its components (and which components are installed) by clicking the + box to the left of the platform. Click - to unexpand the component listing for a platform.
To add another platform to the SDK, click the box next to the platform until the checkmark appears to install all of its components, then click Apply Changes:
To install only the SDK click the box next to the platform once. You can then select any individual components that you need:
Notice that the number of components to install appears next to the Apply Changes button. In the above example, six components are ready to install. After you click the Apply Changes button, you will see the License Acceptance screen:
Click Accept if you accept the Terms and Conditions. You may see this dialog more than one time when there are multiple components to install. At the bottom of the window, a progress bar will indicate download and installation progress. When the download and installation process completes (this can take many minutes, depending on how many components need to be downloaded), the added components are marked with a checkmark and listed as Installed.
Now you're ready to develop your app for the latest, greatest Android API level!
This guide explained how to install and use the Xamarin Android SDK Manager tool in Visual Studio.