Ionic android Error

#1

I am creating an apk for android device but it is giving me error like given below
Checking Java JDK and Android SDK versions
ANDROID_SDK_ROOT=undefined (recommended setting)
ANDROID_HOME=C:\Users\We Are Coders\AppData\Local\Android\sdk (DEPRECATED)
Could not find an installed version of Gradle either in Android Studio,
or on your system to install the gradle wrapper. Please include gradle
in your path, or install Android Studio
[ERROR] An error occurred while running subprocess cordova.

    cordova build android exited with exit code 1.

    Re-running this command with the --verbose flag may provide more information.