How do I set ANDROID_SDK_HOME environment variable?

Question

I'm working with Eclipse on Windows 7, x64. I'm getting an error when running ADT bundle of android development:

Error: Error parsing the AVDs
Unable to get the Android SDK home directory.
Make sure the environment variable ANDROID_SDK_HOME is set up.

I know what the issue is. Is it because it is linked to a wrong directory C:users:????

How do I set this environment variable android_sdk_home to the proper directory?

Answer 1

ANDROID_HOME

Deprecated (in Android Studio), use ANDROID_SDK_ROOT instead.

ANDROID_SDK_ROOT

Installation directory of Android SDK package.

Example: C:\AndroidSDK or /usr/local/android-sdk/

ANDROID_NDK_ROOT

Installation directory of Android NDK package. (WITHOUT ANY SPACE)

Example: C:\AndroidNDK or /usr/local/android-ndk/

ANDROID_SDK_HOME

Deprecated (in Android Studio 4.2), use ANDROID_PREFS_ROOT instead.

ANDROID_PREFS_ROOT

Location of SDK related data/user files.

Example: C:\Users\<USERNAME>\.android\ or ~/.android/

ANDROID_EMULATOR_HOME

Location of emulator-specific data files.

Example: C:\Users\<USERNAME>\.android\ or ~/.android/

ANDROID_AVD_HOME

Location of AVD-specific data files.

Example: C:\Users\<USERNAME>\.android\avd\ or ~/.android/avd/

JDK_HOME and JAVA_HOME

Installation directory of JDK (aka Java SDK) package.

Note: This is used to run Android Studio(and other Java-based applications). Actually when you run Android Studio, it checks for JDK_HOME then JAVA_HOME environment variables to use.