To fix that, you have to open the SDK Manager, deselect the ‘Hide obsolete packages’ option on the bottom-right corner, and further, install the Android SDK Tools (obsolete) folder.

New to Android development? This post will walk you through the process of downloading and installing Android Studio, the Android SDK and the Java Development Kit. You'll see how to start your ...

Installing the Android SDK this way is easier for beginners, and it also means you’ll have Android Studio on hand should you ever want to try traditional Android development.