Simply shows how to connect RGB LED to the button (Kotlin, Android Things)

RGB LED.kt with button and event listener.kt

package <package_name>

import android.app.Activity
import android.os.Bundle
import android.util.Log
import com.google.android.things.contrib.driver.button.Button
import com.google.android.things.pio.Gpio
import com.google.android.things.pio.PeripheralManager
import java.io.IOException

class RGB : Activity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        
        val manager = PeripheralManager.getInstance()
        // Open GPIO pin
        val blueGPIO = manager.openGpio(<GPIO_pin>)
        // Set direction for the pin with initial value
        blueGPIO.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW)

        // Same steps should be done for other RGB LED colors
        val button1 = Button(<GPIO_pin>, Button.LogicState.PRESSED_WHEN_HIGH)
        // Set-up debaunce delay
        button1.setDebounceDelay(10)
        
        // Set button event listener which changes state of the LED GPIO signal
        button1.setOnButtonEventListener { button, pressed ->
            try {
                if (pressed) {
                    Log.d("TAG", "Button is pressed")
                    Log.d("TAG", "Key state: " + pressed.toString())
                    blueGPIO.value = !blueGPIO.value
                }
            } catch (e: IOException) {
                Log.d("Error:", e.toString())
            }
        }
    }
}