Android SDK环境变量

Question

What are the differences in these Android SDK variables:

• ANDROID_HOME
• ANDROID_SDK_HOME
• ANDROID_AVD_HOME

and what is the page that google explains those variables??

Answer 1

I think the page you are looking for is Environment Variables

ANDROID_HOME

Is deprecated and you need to use ANDROID_SDK_ROOT instead. If you continue to use it, the following rules apply: If ANDROID_HOME is defined and contains a valid SDK installation, it's value is used instead of the value in ANDROID_SDK_ROOT . If ANDROID_HOME is not defined, the value in ANDROID_SDK_ROOT is used. If ANDROID_HOME is defined but, does not exist or does not contain a valid SDK installation, the value in ANDROID_SDK_ROOT is used instead.

ANDROID_SDK_ROOT

Sets the path to the SDK installation directory. Once set, the value does not typically change, and can be shared by multiple users on the same machine.

ANDROID_SDK_HOME

By default, the emulator stores configuration files under $HOME/.android/ ( %username%/.android/ in windows) and AVD data under $HOME/.android/avd/ ( %username%/.android/avd/ in windows). You can override the defaults by setting the following environment variables. The emulator -avd <avd_name> command searches the avd directory in the order of the values in $ANDROID_AVD_HOME , $ANDROID_SDK_HOME/.android/avd/ , and $HOME/.android/avd/ .

ANDROID_AVD_HOME

Sets the path to the directory that contains all AVD-specific files, which mostly consist of very large disk images. The default location is $ANDROID_EMULATOR_HOME/avd/ . You might want to specify a new location if the default location is low on disk space.

I was looking for the same answer, but soon found out that most people programming for android do not know basic why and how and just follow the instruction given to them by a manager, blog, or manual until they manage to make an APK. at least it is true in my organization