Changes

Once the installation is complete, review the package list and make sure that the selected packages are now listed as Installed in the Status column. If any are listed as Not installed, make sure they are selected and click on the Apply button again.

Most of the time, the underlying tools of the Android SDK will be accessed from within the Android Studio environment. That being said, however, there will also be instances where it will be useful to be able to invoke those tools from a command prompt or terminal window. In order for the operating system on which you are developing to be able to find these tools, it will be necessary to add them to the system’s PATH environment variable.