Android SDK Manager Extras

Question

The Android SDK is shipped with tools:

• Android SDK Tools (v22.0.1)
• Android SDK Platform-tools (v17)
• Android SDK Build-tools (v17)

and extras:

• Android Support Repository (v1)
• Android Support Library (v13)
• Google AdMob Ads SDK (v11)
• Google Analytics App Tracing SDK (v3)
• Google Analytics SDK (v2)
• Google Cloud Messaging for Android Library (v3)
• Google Play Services (v7)
• Google Repository (v1)
• Google Play APK Expansion Library (v3)
• Google Play Billing Library (v4)
• Google Play Licensing Library (v2)
• Google USB Driver (v7)
• Google Web Driver (v2)
• Intel x86 Emulator Accelerator (HAXM) (v3)

Some of them are documented on developer.android.com and other websites. However, I didn't find anything related to the following:

• Android Support Repository (v1)
• Google Analytics App Tracing SDK (v3)
• Google Repository (v1)

What are they?

Answer 1

The Android Support Repository and Google Repository are Maven repositories that provide access to the latest optional libraries from Google for use alongside the new Gradle build system used by Android Studio:

• com.android.support:support-v4:13.0.0
• com.android.support:support-v13:13.0.0
• com.android.support:gridlayout-v7:13.0.0
• com.google.android.gms:play-services:3.1.36

As per the announcement post.

Google Analytics App Tracking SDK is for Google Analytics's Android SDK.