Note on deprecated ViewModelProviders - Listing 9.1 & 9.3

Android Programming (4th Edition) 9. Displaying Lists with RecyclerView
1

Touching again on the depreciated ViewModelProviders method and how I fixed it for chapter 9

Listing 9.1 app.build.gradle

dependencies {
    def activity_version = "1.3.1"
    def fragment_version = "1.3.6"
    def lifecycle_version = "2.4.0-rc01"

    implementation 'androidx.core:core-ktx:1.6.0'
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
    // https://developer.android.com/jetpack/androidx/releases/lifecycle
    // ViewModel
    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
    // ViewModel utilities for Compose
    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version")
    // LiveData
    implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
    // Lifecycles only (without ViewModel or LiveData)
    implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
    // Saved state module for ViewModel
    implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")
    implementation("androidx.activity:activity-ktx:$activity_version")
    implementation("androidx.fragment:fragment-ktx:$fragment_version")

    implementation("androidx.recyclerview:recyclerview:1.2.1")
    // For control over item selection of both touch and mouse driven selection
    implementation("androidx.recyclerview:recyclerview-selection:1.1.0")

    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

Listing 9.3 CrimeListFragment.kt

class CrimeListFragment : Fragment()
{
    private lateinit var crimeRecyclerView: RecyclerView
    private var adapter: CrimeAdapter? = null

    //https://forums.bignerdranch.com/t/solution-to-deprecated-method-viewmodelproviders-of/16833/4
    val factory by lazy { CrimeListViewModelFactory() }
    private val crimeListViewModel: CrimeListViewModel by lazy {
        ViewModelProvider(this@CrimeListFragment, factory).
            get(CrimeListViewModel::class.java)
    }

And extra class file CrimeListViewModelFactory.kt

import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProvider

class CrimeListViewModelFactory() : ViewModelProvider.Factory
{
    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        return modelClass.getConstructor().newInstance()
    }
}