Apply settings page transition

This change applies Shared X-Axis transition across settings pages. For
injected settings, the injected apps have to also apply the same
transition to take effect.

Fixes: 177479937
Test: robotests and navigate through settings pages
Change-Id: I6241860766f5969428faf9a5b3730a7614fdcd92

src/com/android/settings/homepage/SettingsHomepageActivity.java

@@ -18,11 +18,14 @@ package com.android.settings.homepage;
 
 import android.animation.LayoutTransition;
 import android.app.ActivityManager;
+import android.app.ActivityOptions;
 import android.app.settings.SettingsEnums;
+import android.content.Intent;
 import android.os.Bundle;
 import android.util.FeatureFlagUtils;
 import android.util.Log;
 import android.view.View;
+import android.view.Window;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.Toolbar;
@@ -33,11 +36,13 @@ import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentTransaction;
 
 import com.android.settings.R;
+import com.android.settings.Utils;
 import com.android.settings.accounts.AvatarViewMixin;
 import com.android.settings.core.FeatureFlags;
 import com.android.settings.core.HideNonSystemOverlayMixin;
 import com.android.settings.homepage.contextualcards.ContextualCardsFragment;
 import com.android.settings.overlay.FeatureFactory;
+import com.android.settingslib.transition.SettingsTransitionHelper;
 
 public class SettingsHomepageActivity extends FragmentActivity {
 
@@ -64,6 +69,12 @@ public class SettingsHomepageActivity extends FragmentActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        if (Utils.isPageTransitionEnabled(this)) {
+            // Enable Activity transitions
+            getWindow().requestFeature(Window.FEATURE_ACTIVITY_TRANSITIONS);
+            SettingsTransitionHelper.applyForwardTransition(this);
+            SettingsTransitionHelper.applyBackwardTransition(this);
+        }
         super.onCreate(savedInstanceState);
         setContentView(R.layout.settings_homepage_container);
 
@@ -101,6 +112,16 @@ public class SettingsHomepageActivity extends FragmentActivity {
                 .getLayoutTransition().enableTransitionType(LayoutTransition.CHANGING);
     }
 
+    @Override
+    public void startActivity(Intent intent) {
+        if (Utils.isPageTransitionEnabled(this)) {
+            final Bundle bundle = ActivityOptions.makeSceneTransitionAnimation(this).toBundle();
+            super.startActivity(intent, bundle);
+            return;
+        }
+        super.startActivity(intent);
+    }
+
     private void showSuggestionFragment() {
         final Class<? extends Fragment> fragment = FeatureFactory.getFactory(this)
                 .getSuggestionFeatureProvider(this).getContextualSuggestionFragment();