The Android SDK Manager separates the SDK tools, platforms, and other components into packages for easy access and management. You can also customize which sites the SDK Manager checks for new or updated SDK packages and add-on tools. For example, you can configure the SDK Manager to automatically check for updates and notify you when updates are available. When you receive such a notification, you can then quickly decide whether to download the changes.
Enabling Automatic Update Checking
To enable automatic update checking:
- Choose File > Settings > Appearance & Behavior > System Settings > Updates.
- Select the Automatically check updates for checkbox and select an
- Click OK or Apply to enable the update checking.
Running the SDK Manager
You can launch the SDK Manager in one of the following ways:
- From the Android Studio File menu: File > Settings > Appearance & Behavior > System Settings > Android SDK.
- From the Android Studio Tools menu: Tools > Android > SDK Manager.
- From the SDK Manager icon () in the menu bar.
The SDK Manager appears.
Tip: The standalone SDK Manager is still available from the command line, but we recommend it for use with standalone SDK installations only.
Click the checkbox next to each additional SDK platform and tool that you want to install. Clear the checkbox to uninstall an SDK platform or tool. Click Apply or OK to update the packages and tools.
Tip: When an update is available for an installed package, a hyphen (-) appears in the checkbox next to the package. A download icon () also appears next to the checkbox to indicate the pending update. An update icon () appears next to the checkbox to indicate pending removals.
Click the SDK Update Sites tab to manage which SDK sites Android Studio checks for tool and add-on updates.
There are several different packages available for the Android SDK. The following section describes most of the available packages and where they're located in your SDK directory after you download them.
Here's an outline of the packages required and those we recommend you use:
- SDK Tools
- Required. Your new SDK installation installs the latest version. Be sure to respond to the Android Studio update prompts to keep your SDK Tools up-to-date.
- SDK Platform-tools
- Required. Your new SDK installation installs the latest stable version. Be sure to respond to the Android Studio update prompts to keep your SDK Platform-tools up-to-date.
- SDK Platform
- Required. At least one platform is required in your environment to be able to compile your application. To provide the best user experience on the latest devices, we recommend that you use the latest platform version as your build target. You'll still be able to run your app on older versions, but you must build against the latest version in order to use new features when running on devices with the latest version of Android.
- System Image
- Recommended. Although you might have one or more Android-powered devices on which to test your app, it's unlikely you have a device for every version of Android your app supports. It's a good practice to download system images for all versions of Android that your app supports and then test your app against these Android versions by using the Android Emulator. Click Show Package Details to display the available system images for each available platform. You can also download system images when creating Android Virtual Devices (AVDs) in the AVD Manager.
- Android Support Repository
- Recommended. Includes a local Maven repository for the Android Data Binding Library, Android Testing Support Library, and Android Support Libraries. The Android Support Libraries provide an extended set of APIs that are compatible with most versions of Android. They're required for products such as Android Wear, Android TV, and Google Cast. For more information about each of the libraries in the Android Support Repository, see Data Binding Guide, Testing Support Library, and Support Library.
- Google Play services
- Recommended. Includes the Google Play services client library, which provides a variety of features and services for your apps, such as Google sign-in, Google Maps, Games achievements and leaderboards, and much more.
- Google Repository
- Recommended. Includes local Maven repository for Google libraries.
- Click the SDK Update Sites tab.
- Click Add .
- Type the name and URL of the add-on site, and then cick OK.
- Make sure the checkbox is selected in the Enabled column.
Tip: For easy access to the SDK tools from a command line, add the
location of the SDK
platform-tools to your
PATH environment variable.
The previous list is not comprehensive and you can add new sites to download additional packages from third parties.
In some cases, an SDK package may require a specific minimum revision of another package or SDK tool. The SDK Manager automatically notifies you of any dependencies and downloads the required packages or tools. In addition, development tools notify you if there are dependencies that you need to address.
Adding New Sites
The SDK Update Sites tab displays the sites that Android Studio checks for Android SDK and third-party updates. You can add other sites that host their own Android SDK add-ons, and then download the SDK add-ons from those sites.
For example, a mobile carrier or device manufacturer might offer additional API libraries that are supported by their own Android-powered devices. To develop using their libraries, you must install their Android SDK add-on, if it's not already available as a third-party add-on.
If a carrier or device manufacturer has hosted an SDK add-on repository file on their website, follow these steps to add their site to the Android SDK Manager:
Any SDK packages available from the site appear in the SDK Platforms or SDK Tools tabs.