The Tool Desk
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The package set for building Android apps is officially called the Android SDK, not the “Android Developer Kit” or ADK. You need SDK packages to compile, install, debug, and test an Android app; Android Studio is the common graphical way to install and manage them, but it is not the SDK itself and is not the only way to use it.
What is the Android SDK?
The Android Software Development Kit (SDK) is a collection of separately installed packages used in Android app development. The official Android documentation calls this package set the SDK; “Android Developer Kit (ADK)” is not its documented name. When looking for setup instructions or downloads, search for Android SDK tools.
Android Studio is an integrated development environment (IDE) that can install and manage SDK components through its SDK Manager. The SDK can also be managed from the command line, which is useful for automated or headless environments. The IDE and SDK serve related but different purposes: Android Studio provides the development environment, while SDK packages provide the tools and platform files used to build and work with Android apps. Android Developers: Command-line tools
What is included in the Android SDK?
The SDK is not one all-in-one application. You select and update packages in an Android SDK directory. The main package groups and their jobs are:
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| Package group | What it is used for | Examples |
|---|---|---|
| Command-line tools | Install and manage SDK packages, and manage virtual devices. | sdkmanager lists, installs, updates, and uninstalls packages; avdmanager creates and manages Android Virtual Devices. |
| Build tools | Build and package Android apps and handle APK signatures. | AAPT2 compiles and packages app resources; apksigner signs APKs and checks their signatures. |
| Platform tools | Connect to devices or emulators, deploy apps, and inspect device activity. | adb manages a device or emulator and can install APKs; fastboot is used for flashing devices; logcat displays app and system logs. |
| Android Emulator | Run a software Android environment for app testing and debugging. | Configure virtual Android devices with different device configurations and API levels. |
These components support different parts of the development workflow: building, packaging, deployment, debugging, and testing. Some SDK packages are optional for a particular project, and different build-tools versions can coexist so projects can use the versions they require. Android Developers: Command-line tools
Do you need Android Studio to develop Android apps?
No. Android Studio is the usual graphical route, but the SDK can be installed and managed without the IDE using Google’s command-line tools. Choose based on how you want to work:
- Use Android Studio if you want an IDE and a graphical SDK Manager. Its setup wizard downloads SDK components, and the SDK Manager lets you add or update tools and platforms later.
- Use the command line if you are setting up a build server, working in a headless environment, or prefer to manage packages with commands. Google directs developers to
sdkmanagerfor this workflow.
For general development, use the stable package channel. Beta and canary channels provide preview releases and are best reserved for cases where you specifically need to test an upcoming tool version. After installing packages from the command line, you may need to accept SDK licenses before using them. Android Developers: Update the IDE and SDK tools · Android Developers: Command-line tools
How do you install Android SDK packages?
Graphical setup with Android Studio
- Install Android Studio and follow its setup wizard. The wizard downloads the SDK components needed for development. See Android Developers: Install Android Studio.
- Open Android Studio’s SDK Manager to view and install SDK tools and platforms. The exact menu location can vary between Studio versions; use the SDK Manager entry in the IDE rather than relying on an outdated menu path.
- Install at least one Android platform package. Google says a platform version is required to compile an app. Its guidance recommends using the latest platform as the build target for the best experience on current devices; apps can still run on older Android versions.
- Add other packages the project needs, such as platform tools or the emulator, and update them through SDK Manager when appropriate. These packages are managed separately.
On Windows, Google-device ADB debugging requires the Google USB Driver. That requirement is specific to debugging Google devices over USB on Windows; it is not a general prerequisite for every SDK installation. Android Developers: Update the IDE and SDK tools
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Command-line setup
For a headless machine or a workflow that does not use Android Studio, install the Android SDK command-line tools and use sdkmanager to list, install, update, or remove SDK packages. Follow Google’s current command-line tools documentation for the command syntax and package names; these can change as tools are updated. Accept any SDK licenses requested after package installation before building with those components. Use the stable channel unless you have a specific reason to test beta or canary releases. Android Developers: Update the IDE and SDK tools
Do you need an Android phone to test an app?
No physical phone is required to install the SDK or test with the Android Emulator. Google describes the emulator as its preferred way to test across device configurations and Android API levels without needing physical devices. A modern Android device is another option for deployment and testing, and Google also documents Android Device Streaming Service as an option. The emulator and a real device address different testing needs rather than one making the other universally unnecessary. Android Developers: Install Android Studio
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| Testing route | Best fit | Trade-off |
|---|---|---|
| Android Emulator | Checking an app across multiple device configurations and API levels without owning each device. | Runs on your computer; the Android Studio installation requirements distinguish between Studio alone and Studio with the Emulator. |
| Physical Android device | Checking behavior on real hardware and deploying to a device you can use directly. | Requires access to compatible hardware; buying a phone is not necessary just to install the SDK. |
For Google-device ADB debugging over USB on Windows, install the Google USB Driver. Other device and operating-system setups may have different connection requirements. Android Developers: Update the IDE and SDK tools
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Install at least one Android platform package so you can compile an app. Google recommends targeting the latest platform version for the best experience on current devices, while noting that apps can still run on older Android versions. The target platform choice is distinct from the SDK tools themselves: tools, platforms, and emulator packages are independently managed.
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Tool releases change. For example, Android Developers’ platform-tools release notes identify version 37.0.1 in July 2026; the page reported an update on October 1, 2026. Treat that as a dated release snapshot, not a permanent version requirement, and check the live Platform Tools release notes for current information. Android Studio’s system requirements also change; consult the current installation page for the applicable requirements, including the distinction between running Studio alone and running Studio with the Emulator.
Quick Recap
What should you install first?
- For a first Android app: install Android Studio, let its setup wizard install the SDK, then use SDK Manager to ensure at least one platform is installed.
- For a build server or headless setup: use the command-line tools and
sdkmanager, install the packages your build needs, and accept the requested licenses. - For testing without a phone: add the Android Emulator and configure a virtual device.
- For real-device debugging: connect a compatible Android device; on Windows, install the Google USB Driver when debugging a Google device over USB.
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