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Terms and Conditions

1. Introduction

2. Accepting this License Agreement

3. SDK License from Google

4. Use of the SDK by You

5. Your Developer Credentials

6. Privacy and Information

7. Third Party Applications

8. Using Android APIs

9. Terminating this License Agreement

10. DISCLAIMER OF WARRANTIES

11. LIMITATION OF LIABILITY

12. Indemnification

13. Changes to the License Agreement

14. General Legal Terms

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Android Studio

The official Android IDE

• Android Studio IDE
• Android SDK tools
• Android 5.0 (Lollipop) Platform
• Android 5.0 emulator system image with Google APIs

Download Android Studio

To get Android Studio or stand-alone SDK tools, visit developer.android.com/sdk/

Intelligent code editor

At the core of Android Studio is an intelligent code editor capable of advanced code completion, refactoring, and code analysis.

The powerful code editor helps you be a more productive Android app developer.

Code templates and GitHub integration

New project wizards make it easier than ever to start a new project.

Start projects using template code for patterns such as navigation drawer and view pagers, and even import Google code samples from GitHub.

Multi-screen app development

Build apps for Android phones, tablets, Android Wear, Android TV, Android Auto and Google Glass.

With the new Android Project View and module support in Android Studio, it’s easier to manage app projects and resources.

Virtual devices for all shapes and sizes

Android Studio comes pre-configured with an optimized emulator image.

The updated and streamlined Virtual Device Manager provides pre-defined device profiles for common Android devices.

Android builds evolved, with Gradle

Create multiple APKs for your Android app with different features using the same project.

Manage app dependencies with Maven.

Build APKs from Android Studio or the command line.

More about Android Studio

For more details about features available in Android Studio, read the overview at Android Studio.

If you have been using Eclipse with ADT, be aware that Android Studio is now the official IDE for Android, so you should migrate to Android Studio to receive all the latest IDE updates. For help moving projects, see Migrating to Android Studio.

System Requirements

Windows

• Microsoft® Windows® 8/7/Vista/2003 (32 or 64-bit)
• 2 GB RAM minimum, 4 GB RAM recommended
• 400 MB hard disk space
• At least 1 GB for Android SDK, emulator system images, and caches
• 1280 x 800 minimum screen resolution
• Java Development Kit (JDK) 7
• Optional for accelerated emulator: Intel® processor with support for Intel® VT-x, Intel® EM64T (Intel® 64), and Execute Disable (XD) Bit functionality

Mac OS X

• Mac® OS X® 10.8.5 or higher, up to 10.9 (Mavericks)
• 2 GB RAM minimum, 4 GB RAM recommended
• 400 MB hard disk space
• At least 1 GB for Android SDK, emulator system images, and caches
• 1280 x 800 minimum screen resolution
• Java Runtime Environment (JRE) 6
• Java Development Kit (JDK) 7
• Optional for accelerated emulator: Intel® processor with support for Intel® VT-x, Intel® EM64T (Intel® 64), and Execute Disable (XD) Bit functionality

On Mac OS, run Android Studio with Java Runtime Environment (JRE) 6 for optimized font rendering. You can then configure your project to use Java Development Kit (JDK) 6 or JDK 7.

Linux

• GNOME or KDE desktop
• GNU C Library (glibc) 2.15 or later
• 2 GB RAM minimum, 4 GB RAM recommended
• 400 MB hard disk space
• At least 1 GB for Android SDK, emulator system images, and caches
• 1280 x 800 minimum screen resolution
• Oracle® Java Development Kit (JDK) 7

Tested on Ubuntu® 14.04, Trusty Tahr (64-bit distribution capable of running 32-bit applications).

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Android SDK 31.0.0

The Android SDK provides all the necessary developer tools to build, test, and debug apps for Android in Windows, Mac or Linux.

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What’s New

Certified

The Android SDK is composed of modular packages that you can download separately using the Android SDK Manager. For example, when the SDK Tools are updated or a new version of the Android platform is released, you can use the SDK Manager to quickly download them to your environment. Simply follow the procedures described in Adding Platforms and Packages.

The Android SDK Platform-Tools is a component for the Android SDK. It includes tools that interface with the Android platform, such as adb, fastboot, and systrace. These tools are required for Android app development. They’re also needed if you want to unlock your device bootloader and flash it with a new system image.

Although some new features in these tools are available only for recent versions of Android, the tools are backward compatible, so you need only one version of the SDK Platform-Tools.

If you do not need Android Studio, you can download the basic Android command line tools. You can use the included sdkmanager to download other SDK packages.

• Disable compression on pull by default.
• Improve performance of adb push when pushing many files over a high-latency connection.
• Improve adb push/pull performance on Windows.
• Fix adb push —sync with multiple inputs.
• Improve performance of incremental apk installation.
• Improve error handling for incremental apk installation.

• Fix fallback to non-incremental apk installation on pre-Android 11 devices.
• Fix adb install-multi-package.
• Fix some more crashes related to adb wireless pairing.
• Improve some error messages.

• Improve console output on fastboot oem commands.
• Fix fastboot flashall on Nexus 7.

30.0.4 Command-line tools:

• Fix installation of APKs signed with v4 signature scheme on pre-Android 11 devices.
• Fix crash when authenticating without ADB_VENDOR_KEYS.
• Fix crash when using adb -H.

Previous release notes:

• A command-line version of the Apk Analyzer has been added in tools/bin/apkanalyzer. It offers the same features as the Apk Analyzer in Android Studio and can be integrated into build/CI servers and scripts for tracking size regressions, generating reports, and so on.
• ProGuard rules files under tools/proguard are no longer used by the Android Plugin for Gradle. Added a comment to explain that.
• When creating an AVD with avdmanager, it is no longer necessary to specify —tag if the package specified by —package only contains a single image (as is the case for all images currently distributed by Google).

There are several different packages available for the Android SDK. The table below describes most of the available packages and where they’re located once you download them.

29.0.5 (October 2019) Command-line tools:

• Slight performance improvement on Linux when using many simultaneous connections.
• Add —fastdeploy option to adb install, for incremental updates to APKs while developing.

Available Packages:

• SDK Tools
  • Contains tools for debugging and testing, plus other utilities that are required to develop an app. If you’ve just installed the SDK starter package, then you already have the latest version of this package. Make sure you keep this up to date.
• SDK Platform-tools
  • Contains platform-dependent tools for developing and debugging your application. These tools support the latest features of the Android platform and are typically updated only when a new platform becomes available. These tools are always backward compatible with older platforms, but you must be sure that you have the latest version of these tools when you install a new SDK platform.
• Documentation
  • An offline copy of the latest documentation for the Android platform APIs.
• SDK Platform
  • There’s one SDK Platform available for each version of Android. It includes an android.jar file with a fully compliant Android library. In order to build an Android app, you must specify an SDK platform as your build target.
• System Images
  • Each platform version offers one or more different system images (such as for ARM and x86). The Android emulator requires a system image to operate. You should always test your app on the latest version of Android and using the emulator with the latest system image is a good way to do so.
• Sources for Android SDK
  • A copy of the Android platform source code that’s useful for stepping through the code while debugging your app.
• Samples for SDK
  • A collection of sample apps that demonstrate a variety of the platform APIs. These are a great resource to browse Android app code. The API Demos app in particular provides a huge number of small demos you should explore.
• Google APIs
  • An SDK add-on that provides both a platform you can use to develop an app using special Google APIs and a system image for the emulator so you can test your app using the Google APIs.
• Android Support
  • A static library you can include in your app sources in order to use powerful APIs that aren’t available in the standard platform. For example, the support library contains versions of the Fragment class that’s compatible with Android 1.6 and higher (the class was originally introduced in Android 3.0) and the ViewPager APIs that allow you to easily build a side-swipeable UI.
• Google Play Billing
  • Provides the static libraries and samples that allow you to integrate billing services in your app with Google Play.
• Google Play Licensing
  • Provides the static libraries and samples that allow you to perform license verification for your app when distributing with Google Play.

Download links for previous version Android SDK 25.2.3:

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Prepare for SDK v20

There are many breaking changes coming in version 20.0.0. Version 19.7.0 introduced many new APIs, and deprecated or renamed many classes in preparation for version 20.0.0. This guide highlights the major changes brought about in version 19.7.0 as well as what’s coming for version 20.0.0 (early 2021).

Full-screen format API updates

Starting with version 20.0.0, interstitial, rewarded, rewarded interstitial, and App Open ad formats are standardized to follow a consistent API design.

All full-screen format APIs utilize the following principles:

• A static load method
• A similar load callback or handler mechanism
• Reliance on the FullScreenContentCallback class for presentation callbacks

Legacy RewardedVideoAd API removal

The newer RewardedAd API was first introduced back in March 2019 and has been the preferred rewarded API for over 18 months. It has had more enhancements compared to the legacy RewardedVideoAd API, including the ability to load more than one rewarded ad at a time.

The legacy RewardedVideoAd API is removed in SDK version 20.0.0.

Smart banner deprecation in favor of adaptive banner

Smart banner ads are deprecated in favor of adaptive banner ads. Adaptive banners provide superior performance and more flexibility in setting ad width. If you prefer to continue using full-width banners, that can still be done using adaptive banner, as shown in the following code snippet:

Kotlin

Leave application callback removal

The onAdLeftApplication callback for all ad formats has been removed in favor of ProcessLifecycleOwner . Using an OS-level API notifies you whenever users leave your app, regardless of whether or not it is due to an ad interaction.

Note that the onAdLeftApplication callback was never intended to be an ad click handler, and relying on this callback to report clicks did not produce an accurate metric. For example, a click on the AdChoices icon that launched an external browser invoked the callback but did not count as a click.

Class renames

The table below lists specific class names that have changed or been removed. In summary:

• Most classes related to UnifiedNativeAd have been renamed to NativeAd .
• The MobileAds.Settings , NativeExpressAdView , NativeAppInstallAd , NativeContentAd , and InstreamAd classes and views have been removed.
• All classes with the Publisher prefix have been replaced with an AdManager prefix.
• The InterstitialAd package name has changed.

19.5.0 Class	20.0.0 Class
com.google.android.gms.ads.	com.google.android.gms.ads.
reward.RewardedVideoAd	rewarded.RewardedAd
reward.RewardedVideoAdListener	rewarded.RewardedAdLoadCallback and FullScreenContentCallback
reward.RewardItem	rewarded.RewardItem
rewarded.RewardedAdCallback	OnUserEarnedRewardListener
formats.UnifiedNativeAdView	nativead.NativeAdView
formats.UnifiedNativeAd	nativead.NativeAd
formats.UnifiedNativeAdAssetNames	nativead.NativeAdAssetNames
formats.UnifiedNativeAd.OnUnifiedNativeAdLoadedListener	nativead.NativeAd.OnNativeAdLoadedListener
formats.AdChoicesView	nativead.AdChoicesView
formats.NativeAd.AdChoicesInfo	nativead.NativeAd.AdChoicesInfo
formats.MediaView	nativead.MediaView
formats.NativeAdViewHolder	nativead.NativeAdViewHolder
formats.NativeAdOptions	nativead.NativeAdOptions
formats.NativeCustomTemplateAd	nativead.NativeCustomFormatAd
formats.NativeCustomTemplateAd .OnCustomTemplateAdLoadedListener	nativead.NativeCustomFormatAd .OnCustomFormatAdLoadedListener
MobileAds.Settings	Removed
doubleclick.PublisherAdRequest	admanager.AdManagerAdRequest
doubleclick.PublisherAdView	admanager.AdManagerAdView
formats.PublisherAdViewOptions	formats.AdManagerAdViewOptions
doubleclick.PublisherInterstitialAd	admanager.AdManagerInterstitialAd
InterstitialAd	interstitial.InterstitialAd
NativeExpressAdView	Removed
instream.InstreamAd	Removed
mediation.admob.AdMobExtras	Removed
Correlator	Removed
search.SearchAdRequest	Removed
Interface AdRequest.TagForUnderAgeOfConsent	Removed
Interface AdRequest.MaxAdContentRating	Removed
formats.NativeAppInstallAd	native.NativeAd
formats.NativeAppInstallAdView	native.NativeAdView
mediation.NativeAppInstallAdMapper	mediation.UnifiedNativeAdMapper
formats.NativeContentAd	native.NativeAd
formats.NativeContentAdView	native.NativeAdView
mediation.NativeContentAdMapper	mediation.UnifiedNativeAdMapper

Methods removed/replaced

The table below lists the specific changes in version 20.0.0. In summary:

• Outdated initialization methods have been removed from the MobileAds class.
• Some methods from the AdRequest.Builder() class have either been removed or moved to the RequestConfiguration class.
• RewardedAd and InterstitialAd APIs have been updated to align with all full-screen formats.
• Correlator features have been removed.

Class	v19.5.0 API	v20.0.0 API	Notes
AdSize	getPortraitBanner AdSizeWithWidth()	getPortraitAnchored AdaptiveBannerAdSize()
	getLandscapeBanner AdSizeWithWidth()	getLandscapeAnchored AdaptiveBannerAdSize()
	getCurrentOrientation BannerAdSizeWithWidth()	getCurrentOrientationAnchored AdaptiveBannerAdSize()
MobileAds	initialize(Context, String)	MobileAds.initialize(Context, OnInitializationComplete Listener)	The app ID is now set in the AndroidManifest.xml.
	initialize(Context, String, MobileAds.Settings)	initialize(Context, OnInitializationComplete Listener)	The Settings class has been deprecated.
	getRewardedVideo AdInstance()	Removed	Use the RewardedAd API instead.
AdListener	onAdFailedToLoad(int)	onAd FailedToLoad(LoadAdError)
	onAdLeftApplication()	Removed	Full-screen ad formats use FullscreenContentCallback in place of AdListener, and there is no equivalent method on FullscreenContentCallback. The method has been removed from AdListener.
VideoController	getAspectRatio()	MediaContent.getAspectRatio()
AdRequest	getGender()	Removed
	getBirthday()	Removed
	getNetworkExtras()	Removed
	setManualImpressions Enabled()	Removed
	updateCorrelator()	Removed	See Ad content filtering.
AdRequest.Builder	setBirthday()	Removed
	setGender()	Removed
	setIsDesignedForFamilies()	Removed	See guide.
	addTestDevice()	RequestConfiguration .Builder .setTestDeviceIds()	See Enabling test ads.
	tagForChildDirectedTreatment()	RequestConfiguration .Builder.setTagFor ChildDirectedTreatment()	See Ad content filtering.
	setTagFor UnderAgeOfConsent()	RequestConfiguration .Builder.setTagFor UnderAgeOfConsent()
	setMaxAdContentRating()	RequestConfiguration .Builder .setMaxAdContentRating()
AdView	getMediationAdapter ClassName()	ResponseInfo .getMediationAdapter ClassName()	A ResponseInfo object is now available via the AdView method getResponseInfo().
NativeAdOptions	setImageOrientation()	setMediaAspectRatio()
	getImageOrientation	getMediaAspectRatio()
RewardedAd	loadAd(AdRequest, RewardedAdLoadCallback)	RewardedAd.load(Context, String, AdRequest, RewardedAdLoadCallback)	RewardedAd now uses the same static load approach as other full-screen formats.
	loadAd(PublisherAdRequest, RewardedAdLoadCallback)	RewardedAd.load(Context, String, AdManagerAdRequest, RewardedAdLoadCallback)
	isLoaded()	Removed	The callback from the static load method provides an ad that is already loaded.
	show(Activity, RewardedAdCallback)	show(Activity, OnUserEarnedRewardListener)	This show method adheres to the broader full-screen format approach.
RewardedAdLoadCallback	onRewardedAd FailedToLoad(int)	onAd FailedToLoad(LoadAdError)
	onRewardedAd FailedToLoad(LoadAdError)	onAd FailedToLoad(LoadAdError)
	onRewardedAdLoaded()	onAdLoaded(RewardedAd)
AppOpenAdLoadCallback	onAppOpenAd FailedToLoad(int)	onAd FailedToLoad(LoadAdError)
	onAppOpenAd FailedToLoad(LoadAdError)	onAd FailedToLoad(LoadAdError)
	onAppOpenAd Loaded(AppOpenAd)	onAdLoaded(AppOpenAd)
RewardedInterstitialAdLoad Callback	onRewardedInterstitialAd FailedToLoad(int)	onAd FailedToLoad(LoadAdError)
	onRewardedInterstitialAd FailedToLoad(LoadAdError)	onAd FailedToLoad(LoadAdError)
	onRewardedInterstitialAd Loaded(RewardedInterstitialAd)	onAd Loaded(RewardedInterstitialAd)
InterstitialAd	new InterstitialAd()	InterstitialAd.load(Context, String, AdRequest, InterstitialAdLoadCallback)	InterstitialAd now uses the same static load approach as other full-screen formats.
	setAdListener()
DynamicHeightSearchAd Request	getNetworkExtras()	Removed	The NetworkExtras class has been deprecated.
AdLoader	forContentAd()	Removed
	forAppInstallAd()	Removed
	withCorrelator()	Removed
	getMediationAdapter ClassName()	Removed

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

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