This project is a sample project using app/libs/processing-core-androidx-1.1.1.jar and configuring app/gradle.build with the following dependancies
implementation 'com.google.android.support:wearable:2.8.1'
compileOnly 'com.google.android.wearable:wearable:2.8.1'
implementation files('libs/processing-core-androidx-1.1.1.jar')
The app targets android platform API - 30
