ionic 2 - Error Could not find an installed version of Gradle either in Android Studio

I create ionic 2 project and add diagnostic cordova plugin like this :

ionic plugin add cordova.plugins.diagnostic

npm install --save @ionic-native/diagnostic

and add android platform like this :

ionic platform add android@latest

but when build with ionic build android console give me this error :

Error: 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

and I try to download manualy gradle.3.3-all.zip and change this distributionUrl var in platform/android/cordova/lib/builders/GradleBuilder.js

 var distributionUrl = process.env['CORDOVA_ANDROID_GRADLE_DISTRIBUTION_URL'] || 'https\\://services.gradle.org/distributions/gradle-3.3-all.zip'

to:

var distributionUrl = process.env['CORDOVA_ANDROID_GRADLE_DISTRIBUTION_URL'] || 'file:///E:/gradles/gradle-3.3-all.zip';

but not working and console give me last error.

I dont know how to add gradle for android@latest version

Solution 1:

Life is too short to spend it on messing with paths, etc.

Since I had Homebrew installed on the iMac, I just ran this command:

brew install gradle

The Ionic3 project started to build successfully.

Solution 2:

Try installing gradle and include it into your path. Click the link below to get manual. https://gradle.org/install

Solution 3:

Just install gradle on linux, Even if Android Studio is installed,

sudo apt install gradle