Ionic cordova build android throw an error

Ionic Framework ionic-v3
1

Android Studio project detected
ANDROID_HOME=C:\Program Files\Android\Android Studio
JAVA_HOME=C:\Program Files\Java\jdk1.8.0_231
studio
Subproject Path: CordovaLib
Subproject Path: app

FAILURE: Build failed with an exception.

  • Where:
    Script ‘C:\Users\saad.saeed\Desktop\jawwad\smartVege\platforms\android\CordovaLib\cordova.gradle’ line: 68

  • What went wrong:
    A problem occurred evaluating project ‘:CordovaLib’.

No installed build tools found. Install the Android build tools version 19.1.0 or higher.

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

  • Get more help at https://help.gradle.org

BUILD FAILED in 5s
cmd: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.

  • Where:
    Script ‘C:\Users\saad.saeed\Desktop\jawwad\smartVege\platforms\android\CordovaLib\cordova.gradle’ line: 68

  • What went wrong:
    A problem occurred evaluating project ‘:CordovaLib’.

No installed build tools found. Install the Android build tools version 19.1.0 or higher.

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

  • Get more help at https://help.gradle.org

BUILD FAILED in 5s

2

Download Gradle and move files to to C:\Gradle.
And set environment variable

I recommend use jdk1.8.0_201.

Missing SDK.

C:\Users\YOU_USER\AppData\Local\Android\Sdk

And in your Path system variable.
You need.

%JAVA_HOME%\bin
%ANDROID_HOME%\platform-tools
%ANDROID_HOME%\platforms

And in you User variable path.

C:\Gradle\bin

4

thank you sir,
but i can’t undastand this lines
And in you User variable path.

C:\Gradle\bin

5

See this https://docs.gradle.org/current/userguide/installation.html