Ionic_CordovaError: Could not find an installed version of Gradle either in Android Studio, or on your system to install the gradle wrapper

Question

I am trying to build an apk for android by using ionic framework but couldn't building an apk. I have already installed Android studio 3.1.3 and added platform in ionic project also.

ionic cordova add platform android


ionic cordova build android --release

Ionic info:

cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

global packages:

    cordova (Cordova CLI) : 8.0.0 

local packages:

    @ionic/app-scripts : 3.1.9
    Cordova Platforms  : android 7.0.0
    Ionic Framework    : ionic-angular 3.9.2

System:

    Android SDK Tools : 26.1.1
    Node              : v8.11.1
    npm               : 5.6.0 
    OS                : macOS High Sierra
    Xcode             : Xcode 7.2.1 Build version 7C1002 

Environment Variables:

    ANDROID_HOME : /Users/prakash/Documents/adt-bundle-mac-x86_64-20140321/sdk

Misc:

    backend : pro

Error message:

ANDROID_HOME=/Users/prakash/Documents/adt-bundle-mac-x86_64-20140321/sdk
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home
studio
(node:1272) UnhandledPromiseRejectionWarning: CordovaError: 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
    at Object.module.exports.check_gradle (/Users/prakash/IONIC/NABH/platforms/android/cordova/lib/check_reqs.js:150:18)
    at StudioBuilder.prepEnv (/Users/prakash/IONIC/NABH/platforms/android/cordova/lib/builders/StudioBuilder.js:216:23)
    at Api.module.exports.run (/Users/prakash/IONIC/NABH/platforms/android/cordova/lib/build.js:154:20)
    at /Users/prakash/IONIC/NABH/platforms/android/cordova/Api.js:342:43
    at _fulfilled (/Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:854:54)
    at self.promiseDispatch.done (/Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:883:30)
    at Promise.promise.promiseDispatch (/Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:816:13)
    at /Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:624:44
    at runSingle (/Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:137:13)
    at flush (/Users/prakash/IONIC/NABH/platforms/android/cordova/node_modules/q/q.js:125:13)
(node:1272) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:1272) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Finally Installed gradle-4.1 file and unzipped it in below path,

/Users/prakash/gradle-4.1

But still getting the above message. Please help me to out from this stuck. Thanks in adv.

Answer 1

finally i got the solution of my own question.

If you have already installed Android Studio and set the Environment variable like,

ANDROID_HOME : /Users/prakash/Documents/adt-bundle-mac-x86_64-20140321/sdk

Then you need to download the gradle and include it into your path. Click the link below to get manual. https://gradle.org/install

Once download completed, follow the below steps:

Step-1: Goto your sdk path. here is my path /Users/prakash/Documents/adt-bundle-mac-x86_64-20140321/sdk/tools

Step-2: create a new folder named as "gradle" and open it.

Step-3: Unzip the gradle folder here which was downloaded earlier.

Step-4: Now open terminal and run your ionic project.