Open personal settings tab when launching homepage

Change-Id: I341e1a128fda7db8f953f9a0800050cc007554c5
Fixes: 114441682
Test: manual/robotest

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

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.homepage;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.FeatureFlagUtils;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+
+import com.android.settings.R;
+import com.android.settings.core.FeatureFlags;
+import com.android.settings.core.SettingsBaseActivity;
+import com.android.settings.overlay.FeatureFactory;
+
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+public class SettingsHomepageActivity extends SettingsBaseActivity {
+
+    @VisibleForTesting
+    static final String PERSONAL_SETTINGS_TAG = "personal_settings";
+    private static final String ALL_SETTINGS_TAG = "all_settings";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (!isDynamicHomepageEnabled(this)) {
+            final Intent settings = new Intent();
+            settings.setAction("android.settings.SETTINGS");
+            startActivity(settings);
+            finish();
+            return;
+        }
+
+        setContentView(R.layout.settings_homepage_container);
+
+        final FloatingActionButton searchButton = findViewById(R.id.search_fab);
+        FeatureFactory.getFactory(this).getSearchFeatureProvider()
+                .initSearchToolbar(this, searchButton);
+
+        final BottomNavigationView navigation = findViewById(R.id.bottom_nav);
+        navigation.setOnNavigationItemSelectedListener(item -> {
+            switch (item.getItemId()) {
+                case R.id.homepage_personal_settings:
+                    switchFragment(new PersonalSettingsFragment(), PERSONAL_SETTINGS_TAG,
+                            ALL_SETTINGS_TAG);
+                    return true;
+
+                case R.id.homepage_all_settings:
+                    switchFragment(new TopLevelSettings(), ALL_SETTINGS_TAG,
+                            PERSONAL_SETTINGS_TAG);
+                    return true;
+            }
+            return false;
+        });
+
+        if (savedInstanceState == null) {
+            // savedInstanceState is null, this is first load.
+            // Default to open contextual cards.
+            switchFragment(new PersonalSettingsFragment(), PERSONAL_SETTINGS_TAG,
+                    ALL_SETTINGS_TAG);
+        }
+    }
+
+    public static boolean isDynamicHomepageEnabled(Context context) {
+        return FeatureFlagUtils.isEnabled(context, FeatureFlags.DYNAMIC_HOMEPAGE);
+    }
+
+    private void switchFragment(Fragment fragment, String showFragmentTag, String hideFragmentTag) {
+        final FragmentManager fragmentManager = getSupportFragmentManager();
+        final FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+
+        final Fragment hideFragment = fragmentManager.findFragmentByTag(hideFragmentTag);
+        if (hideFragment != null) {
+            fragmentTransaction.hide(hideFragment);
+        }
+
+        Fragment showFragment = fragmentManager.findFragmentByTag(showFragmentTag);
+        if (showFragment == null) {
+            fragmentTransaction.add(R.id.main_content, fragment, showFragmentTag);
+        } else {
+            fragmentTransaction.show(showFragment);
+        }
+        fragmentTransaction.commit();
+    }
+}