46.5 Creating a Lifecycle Owner

The final task in this chapter is to create a custom lifecycle owner class and demonstrate how to trigger events and modify the lifecycle state from within that class.

Add a new class by right-clicking on the app -> java -> com.ebookfrenzy.lifecycledemo entry in the Project tool window and selecting the New -> Kotlin File/Class... menu option. Name the class DemoOwner in the Create Class dialog and select the Class option before tapping the keyboard Return key. With the new DemoOwner.kt file loaded into the code editor, modify it as follows:

package com.ebookfrenzy.lifecycledemo

 

import androidx.lifecycle.Lifecycle

import androidx.lifecycle.LifecycleOwner

import androidx.lifecycle.LifecycleRegistry

 

class DemoOwner: LifecycleOwner {

}

The class is going to need a LifecycleRegistry instance initialized with a reference to itself, and a getLifecycle() method configured to return the LifecycleRegistry instance...