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This guide applies to Visual Studio 2019, Visual Studio 2017, and Visual Studio for Mac. The Xamarin Android SDK Manager (installed as part of the Mobile development with.NET workload) helps you download the latest Android components that you need for developing your Xamarin.Android app. This guide applies to Visual Studio 2019, Visual Studio 2017, and Visual Studio for Mac. The Xamarin Android SDK Manager (installed as part of the Mobile development with.NET workload) helps you download the latest Android components that you need for developing your Xamarin.Android app.

Just had the same problem. Reason was, in Project Options of main-project Build-General the Target Framework was changed, don't know why. For my project it should be Xamarin.Mac Full Net 4.7.2, but for whatever reason it now was Xamarin.Mac Modern. Visual Studio for Mac.NET. Azure DevOps. Azure DevOps Server (TFS) 1. Android SDK Manager complains with 'Loading SDK component information failed' in VS2017. Visual studio 2017 version 15.9 windows 10.0. Peterelpop.fcih reported Apr 07 at 11:07 AM. Dec 13, 2019 Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines. Microsoft MI-Based Debugger 1.0 Provides support for connecting Visual Studio to MI compatible debuggers. Mono Debugging for Visual Studio 16.5.23 (1b51e8c) Support for debugging Mono processes with Visual Studio. NuGet Package Manager 5.4.0.

Visual Studio includes an Android SDK Manager that you useto download Android SDK tools, platforms, and other components that youneed for developing Xamarin.Android apps.

Overview

This guide explains how to use the Xamarin Android SDK Manager inVisual Studio and Visual Studio for Mac.

Note

This guide applies to Visual Studio 2019, Visual Studio 2017, and Visual Studio for Mac.

The Xamarin Android SDK Manager (installed as part of the Mobiledevelopment with .NET workload) helps you download the latest Androidcomponents that you need for developing your Xamarin.Android app. Itreplaces Google's standalone SDK Manager, which has been deprecated.

Requirements

To use the Xamarin Android SDK Manager, you will need the following:

Visual Studio 2019 Community, Professional, or Enterprise.
OR Visual Studio 2017 (Community, Professional, or Enterprise edition). VisualStudio 2017 version 15.7 or later is required.
Visual Studio Tools for Xamarin version 4.10.0 or later(installed as part of the Mobile development with .NET workload).

The Xamarin Android SDK Manager also requires the Java Development Kit(which is automatically installed with Xamarin.Android). There areseveral JDK alternatives to choose from:

By default, Xamarin.Android usesJDK 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 7if you are developing specifically for API level 23 or earlier.
If you are using Visual Studio 15.8 Preview 5 or later, you can tryusing Microsoft's Mobile OpenJDK Distributionrather than JDK 8.

SDK Manager

To start the SDK Manager in Visual Studio, click Tools > Android >Android SDK Manager:

The Android SDK Manager opens in the Android SDKs andTools screen. This screen has two tabs – Platforms andTools:

The Android SDKs and Tools screen is described in more detail inthe following sections.

Android SDK location

The Android SDK location is configured at the top of the Android SDKsand Tools screen, as seen in the previous screenshot. This location mustbe configured correctly before the Platforms and Tools tabswill function properly. You may need to set the location of the AndroidSDK for one or more of the following reasons:

The Android 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 ellipsis (…)button to the far right of Android SDK Location. This opens theBrowse For Folder dialog to use for navigating to the location ofthe Android SDK. In the following screenshot, the Android SDK underProgram Files (x86)Android is being selected:

When you click OK, the SDK Manager will manage the Android SDK thatis installed at the selected location.

Tools tab

The Tools tab displays a list of tools and extras. Use this tabto 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 thecheck mark next to Android Emulator and click the Apply Changesbutton:

A dialog may be shown with the message, The following package requiresthat you accept its license terms before installing:

Click Accept if you accept the Terms and Conditions. At the bottomof the window, a progress bar indicates download and installationprogress. After the installation completes, the Tools tab will showthat the selected tools and extras were installed.

Platforms tab

The Platforms tab displays a list of platform SDK versions alongwith other resources (like system images) for each platform:

This screen lists the Android version (such as Android 8.0), thecode name (Oreo), the API level (such as 26), and the sizes ofthe components for that platform (such as 1 GB). You use thePlatforms tab to install components for the Android API level thatyou want to target. For more information about Android versions and APIlevels, seeUnderstanding Android API Levels.

When all components of a platform are installed, a checkmark appears nextto the platform name. If not all components of a platform areinstalled, the box for that platform is filled.You can expand a platform to see its components (and which componentsare 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 platformuntil the checkmark appears to install all of its components, thenclick Apply Changes:

To install only specific components, click the box next to the platformonce. You can then select any individual components that you need:

Notice that the number of components to install appears next to theApply Changes button. After you click the Apply Changes button,you will see the License Acceptance screen as shown earlier.Click Accept if you accept the Terms and Conditions. You may seethis dialog more than one time when there are multiple components toinstall. At the bottom of the window, a progress bar will indicatedownload and installation progress. When the download and installationprocess completes (this can take many minutes, depending on how manycomponents need to be downloaded), the added components are marked witha checkmark and listed as Installed.

Repository selection

By default, the Android SDK Manager downloads platform components andtools from a Microsoft-managed repository. If you need access toexperimental alpha/beta platforms and tools that are not yet availablein the Microsoft repository, you can switch the SDK Manager to useGoogle's repository. To make this switch, click the gear icon in thelower right-hand corner and select Repository > Google(Unsupported):

When the Google repository is selected, additional packages may appearin the Platforms tab that were not available previously. (In theabove screenshot, Android SDK Platform 28 was added by switching tothe Google repository.) Keep in mind that use of the Google repositoryis unsupported and is therefore not recommended for everydaydevelopment.

To switch back to the supported repository of platforms and tools,click Microsoft (Recommended). This restores the list of packagesand tools to the default selection.

Requirements

To use the Xamarin Android SDK Manager, you will need the following:

Visual Studio for Mac 7.5 (or later).

The Xamarin Android SDK Manager also requires the Java Development Kit(which is automatically installed with Xamarin.Android). There areseveral JDK alternatives to choose from:

By default, Xamarin.Android usesJDK 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 7if you are developing specifically for API level 23 or earlier.
If you are using Visual Studio for Mac 7.7 or later, you can tryusing Microsoft's Mobile OpenJDK Distributionrather than JDK 8.

Important

Xamarin.Android does not support JDK 9.

SDK Manager

To start the SDK Manager in Visual Studio for Mac, click Tools > SDK Manager:

The Android SDK Manager opens in the Preferences window, whichcontains three tabs, Platforms, Tools, and Locations:

The tabs of the Android SDK Manager are described in thefollowing sections.

Locations tab

The Locations tab has three settings for configuring the locationsof the Android SDK, Android NDK, and the Java SDK (JDK). Theselocations must be configured correctly before the Platforms andTools tabs will function properly.

When the SDK Manager starts, it automatically determines the path foreach installed package and indicates that it was Found by placing agreen checkmark icon next to the path:

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Click the Reset to Defaults button to cause the SDK Manager to lookfor the SDK, NDK, and JDK at their default locations.

Typically, you use the Locations tab to modify the location of theAndroid SDK and/or the Java JDK. You do not need to install the NDK todevelop Xamarin.Android apps – the NDK is used only when you needto develop parts of your app using native-code languages such as C andC++.

Tools tab

For example, to download the Google Android Emulator package, click thecheck mark next to Android Emulator and click the Apply Changesbutton:

A dialog may be shown with the message, The following package requiresthat you accept its license terms before installing:

Platforms tab

The Platforms tab displays a list of platform SDK versions alongwith other resources (like system images) for each platform:

This screen lists the Android version (such as Android 8.1), thecode name (Oreo), the API level (such as 27), and the sizes ofthe components for that platform (such as 1 GB). You use thePlatforms tab to install components for the Android API level thatyou want to target. For more information about Android versions and APIlevels, see Understanding Android API Levels.

When all components of a platform are installed, a checkmark appears nextto the platform name. If not all components of a platform areinstalled, the box for that platform is filled.You can expand a platform to see its components (and which componentsare installed) by clicking the arrow to the left of the platform.Click down arrow to unexpand the component listing for a platform.

To add another platform to the SDK, click the box next to the platformuntil the checkmark appears to install all of its components, thenclick Apply Changes:

To install only some components, click the box next to the platformonce. You can then select any individual components that you need:

Visual Studio For Mac Loading Sdk Component Information Failed Sierra Version

Repository selection

When the Google repository is selected, additional packages may appearin the Platforms tab that were not available previously. (In theabove screenshot, Android SDK Platform 28 was added by switching tothe Google repository.) Keep in mind that use of the Google repository isunsupported and is therefore not recommended for everyday development.

To switch back to the supported repository of platforms and tools,click Microsoft (Recommended). This restores the list of packagesand tools to the default selection.

Summary

This guide explained how to install and use the Xamarin Android SDKManager tool in Visual Studio and Visual Studio for Mac.

Requirements

A Mac with macOS High Sierra 10.12 or above.

To build Xamarin apps for iOS or macOS, you'll also need:

Free notepad for mac os x. Notepad for Mac is a note-taking app for Mac OS X. A trial version is available from several download sites, while the full licensed version of Notepad for Mac will cost you $20.

Xcode 10.0 or above. The latest stable version is usually recommended.
An Apple ID. If you don't have an Apple ID already you can create a new one at https://appleid.apple.com. It's necessary to have an Apple ID for installing and signing into Xcode.

Installation instructions

Download the installer from the Visual Studio for Mac download page.
Once the download is complete, click the VisualStudioforMacInstaller.dmg to mount the installer, then run it by double-clicking the arrow logo:
You may be presented with a warning about the application being downloaded from the Internet. Click Open.
Wait while the installer checks your system:
An alert will appear asking you to acknowledge the privacy and license terms. Follow the links to read them, then press Continue if you agree:
The list of available workloads is displayed. Select the components you wish to use:
If you do not wish to install all platforms, use the guide below to help you decide which platforms to install:

Type of App	Target	Selection	Notes
Apps Using Xamarin	Xamarin.Forms	Select Android and iOS platforms	You will need to install Xcode
iOS only	Select iOS platform	You will need to install Xcode
Android only	Select Android platform	Note that you should also select the relevant dependencies
Mac only	Select macOS (Cocoa) platform	You will need to install Xcode
.NET Core applications	Select .NET Core platform.
ASP.NET Core Web Applications	Select .NET Core platform.
Azure Functions	Select .NET Core platform.
Cross-platform Unity Game Development	No additional platforms need to be installed beyond Visual Studio for Mac.	Refer to the Unity setup guide for more information on installing the Unity extension.

After you have made your selections, press the Install button.
The installer will display progress as it downloads and installs Visual Studio for Mac and the selected workloads. You will be prompted to enter your password to grant the privileges necessary for installation.:
Once installed, Visual Studio for Mac will prompt you to personalize your installation by signing in and selecting the key bindings that you'd like to use:

If you have network trouble while installing in a corporate environment, review the installing behind a firewall or proxy instructions.

Learn more about the changes in the release notes.

Note

If you chose not to install a platform or tool during the original installation (by unselecting it in step #6), you must run the installer again if you wish to add the components later.

Install Visual Studio for Mac behind a firewall or proxy server

To install Visual Studio for Mac behind a firewall, certain endpoints must be made accessible in order to allow downloads of the required tools and updates for your software.

Configure your network to allow access to the following locations:

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Next steps

Installing Visual Studio for Mac allows you to start writing code for your apps. The following guides are provided to guide you through the next steps of writing and deploying your projects.