Unable to get provider androidx.lifecycle.ProcessLifecycleOwnerInitializr

Thanks Andrews Alves

From post

It was a Dex problem. in android 4.4

1 - in app gradle, inside defaultConfig enable multidex

defaultConfig{
  ....
  multiDexEnabled true
}

2 - to support multidex in other versions, add this dependency to your app gradle

implementation 'com.android.support:multidex:1.0.3' 

3 - if you have a class that extends Application, make it extend

MultiDexApplication

if you don't, add this to your manifest file inside application tag

android:name="android.support.multidex.MultiDexApplication" 

Besides, if you created a new application, dont forget to add the following to your app/build.gradle

android {
    defaultConfig {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

that's it. worked for me

For kotlin add this to your gradle :

kotlinOptions {
        jvmTarget = '1.8'
}
compileOptions {
        targetCompatibility = "8"
        sourceCompatibility = "8"
}

In my case, Somehow android architecture lifecycle files getting omitted with Android bundle on Pie(Android9). So what I did was added keep statement for the same in proguard-rules.pro

For AndroidX :

-keep class androidx.lifecycle.** {*;}

For Support :

-keep class android.arch.lifecycle.** {*;}