MainActivity.kt

package com.madrapps.playground

import android.os.Bundle
import android.util.Log
import androidx.activity.viewModels
import androidx.appcompat.app.AppCompatActivity
import com.madrapps.math.Arithmetic
import com.madrapps.text.StringOp

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // App Module
        val userId = "admin"
        val model: MainViewModel by viewModels()
        Log.d("App", "Validate = ${model.validate(userId)}")
        Log.d("App", "Verify Access = ${model.verifyAccess1(userId)}")

        // Math module
        val arithmetic = Arithmetic()
        Log.d("Math", "Add = ${arithmetic.add(2, 5)}")
        Log.d("Math", "Multiply = ${arithmetic.multiply(2, 5)}")

        // Text module
        val stringOp = StringOp()
        Log.d("Text", "EndsWith = ${stringOp.endsWith(userId, "in")}")
    }
}