androiddeployqt with --gradle errors out as "Failed to apply plugin [id 'myappid']

Nelson_Piquet

My QtApp for android is supposed to command-line build with gradle on an osx machine. Based on a previous help from this forum, I using --gradle so that the build is done using gradle instead of ant as seen below command I am using in my script.

androiddeployqt --sign MyKeystore --storepass MyPassword --output android-build --gradle --input $PWD/MyQtApp/android-libMyQtApp.so-deployment-settings.json

After resolving many issues with proxy & connectivity, I am finally getting an error as below when I run my script:

  A problem occurred evaluating root project 'android-build'.
    > Failed to apply plugin [id 'com.mycompany.myappid']
    > Plugin with id 'com.mycompany.myappid' not found.

How can I fix this issue ?

My build.gradle looks like below:

buildscript {
repositories {
maven {
url "http://repo1.maven.org/maven2"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:2.1.3'
}
}

apply plugin: 'com.mycompany.myappid'

android {
compileSdkVersion 23
buildToolsVersion "21.1.2"

def versionPropsFile = file('version.properties')

if (versionPropsFile.canRead()) {
    def Properties versionProps = new Properties()

    versionProps.load(new FileInputStream(versionPropsFile))

    def code = versionProps['VERSION_CODE'].toInteger() + 1

    versionProps['VERSION_CODE']=code.toString()
    versionProps.store(versionPropsFile.newWriter(), null)

    defaultConfig {
        versionCode code
        versionName "1.1"
        minSdkVersion 14
        targetSdkVersion 18
    }
}
else {
    throw new GradleException("Could not read version.properties!")
}

}