Make Cordova Aware of the Android SDK!
Before we try to compile for Android, we must tell Cordova where the Android SDK is installed. That's why I advised you to memorize the path where you installed it to. We'll need it now.
7.1 - Go to the Control Panel of your Windows OS, choose System, then System Properties (you may need to click on Advanced System Settings on Windows 7+).
7.2 - Click on the Environment Variables button and create a new system variable. Enter ANDROID_HOME for the name and the SDK installation path for the value.
For instance:
Variable name: ANDROID_HOME
Variable value: C:\Program Files (x86)\Android\android-sdk
Click OK on that window and OK many times as needed for the subsequent windows until the Control Panel is closed.