Convert SettingsLib Lifecycle to Flatfoot

Bug: 69257739
Test: m -j RunSettingsLibRoboTests
Change-Id: Iaf14f6f26689a54248bd27cffce0423e857181b9
diff --git a/packages/SettingsLib/src/com/android/settingslib/core/lifecycle/ObservableDialogFragment.java b/packages/SettingsLib/src/com/android/settingslib/core/lifecycle/ObservableDialogFragment.java
index 315bedc..dc95384 100644
--- a/packages/SettingsLib/src/com/android/settingslib/core/lifecycle/ObservableDialogFragment.java
+++ b/packages/SettingsLib/src/com/android/settingslib/core/lifecycle/ObservableDialogFragment.java
@@ -15,9 +15,17 @@
  */
 package com.android.settingslib.core.lifecycle;
 
+import static android.arch.lifecycle.Lifecycle.Event.ON_CREATE;
+import static android.arch.lifecycle.Lifecycle.Event.ON_DESTROY;
+import static android.arch.lifecycle.Lifecycle.Event.ON_PAUSE;
+import static android.arch.lifecycle.Lifecycle.Event.ON_RESUME;
+import static android.arch.lifecycle.Lifecycle.Event.ON_START;
+import static android.arch.lifecycle.Lifecycle.Event.ON_STOP;
+
 import android.app.DialogFragment;
+import android.arch.lifecycle.LifecycleOwner;
 import android.content.Context;
-import android.support.annotation.VisibleForTesting;
+import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -25,9 +33,9 @@
 /**
  * {@link DialogFragment} that has hooks to observe fragment lifecycle events.
  */
-public class ObservableDialogFragment extends DialogFragment {
+public class ObservableDialogFragment extends DialogFragment implements LifecycleOwner {
 
-    protected final Lifecycle mLifecycle = createLifecycle();
+    protected final Lifecycle mLifecycle = new Lifecycle(this);
 
     @Override
     public void onAttach(Context context) {
@@ -36,32 +44,39 @@
     }
 
     @Override
+    public void onCreate(Bundle savedInstanceState) {
+        mLifecycle.onCreate(savedInstanceState);
+        mLifecycle.handleLifecycleEvent(ON_CREATE);
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
     public void onStart() {
-        mLifecycle.onStart();
+        mLifecycle.handleLifecycleEvent(ON_START);
         super.onStart();
     }
 
     @Override
     public void onResume() {
-        mLifecycle.onResume();
+        mLifecycle.handleLifecycleEvent(ON_RESUME);
         super.onResume();
     }
 
     @Override
     public void onPause() {
-        mLifecycle.onPause();
+        mLifecycle.handleLifecycleEvent(ON_PAUSE);
         super.onPause();
     }
 
     @Override
     public void onStop() {
-        mLifecycle.onStop();
+        mLifecycle.handleLifecycleEvent(ON_STOP);
         super.onStop();
     }
 
     @Override
     public void onDestroy() {
-        mLifecycle.onDestroy();
+        mLifecycle.handleLifecycleEvent(ON_DESTROY);
         super.onDestroy();
     }
 
@@ -86,9 +101,8 @@
         return lifecycleHandled;
     }
 
-    @VisibleForTesting(otherwise = VisibleForTesting.NONE)
-    /** @return a new lifecycle. */
-    public static Lifecycle createLifecycle() {
-        return new Lifecycle();
+    @Override
+    public Lifecycle getLifecycle() {
+        return mLifecycle;
     }
 }