Logic to support back navigation to parent activity properly when returning from PiP mode

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:dist="http://schemas.android.com/apk/distribution"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.app.yourapp">

    <dist:module
        dist:instant="false"
        dist:title="@string/feature_title">
        <dist:fusing dist:include="true" />
        <dist:delivery>
            <dist:on-demand />
        </dist:delivery>
    </dist:module>

    <application>
        <activity
            android:name="com.app.PipActivity"
            android:taskAffinity="com.app.something"
            android:screenOrientation="portrait"
            android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation"
            android:excludeFromRecents="true"
            android:launchMode="singleTask"
            android:supportsPictureInPicture="true"
            tools:ignore="LockedOrientationActivity"
            tools:targetApi="n" />
    </application>

</manifest>

PipActivity.kt

class PipActivity : Activity() {
  
  var isActivityBackStackLost = false
  var isInPictureInPictureMode = false
  
  object {
    
    fun open(activity: Activity) = with(activity) {
      val intent = Intent(this, Class.forName("com.app.PipActivity"))
      //Add this, if the activity is part of a dynamic module.
      intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
      startActivity(intent)
    }
  }
  
  override fun onPictureInPictureModeChanged(isInPictureInPictureMode: Boolean, newConfig: Configuration?) {
    super.onPictureInPictureModeChanged(isInPictureInPictureMode, newConfig)
    isActivityBackStackLost = true
    isInPictureInPictureMode = isInPictureInPictureMode
  }
  
  override fun finish() {
        if (!isInPictureInPictureMode && isActivityBackStackLost) {
            finishAndRemoveTask()
            val activityManager: ActivityManager = getSystemService(ACTIVITY_SERVICE) as ActivityManager
            activityManager.appTasks.forEach { task ->
                val baseIntent: Intent = task.taskInfo.baseIntent
                val categories = baseIntent.categories
                if (categories != null && categories.contains(Intent.CATEGORY_LAUNCHER)) {
                    task.moveToFront()
                    return
                }
            }

        } else {
            super.finish()
        }
    }
}

TaskManager.kt

Object TaskManager {

  fun navigateToLauncherTask(applicationContext: Context) {
          val activityManager: ActivityManager = applicationContext.getSystemService(ACTIVITY_SERVICE) as ActivityManager
          // iterate app tasks available and navigate to launcher task (browse task)
          activityManager.appTasks.forEach { task ->
              val baseIntent: Intent = task.taskInfo.baseIntent
              val categories = baseIntent.categories
              if (categories != null && categories.contains(Intent.CATEGORY_LAUNCHER)) {
                  task.moveToFront()
                  return
              }
          }
      }
}

Reference: https://proandroiddev.com/task-management-for-picture-in-picture-mode-on-android-o-882103271cad