fix: 首次提交

SettingsLib/ProfileSelector/src/com/android/settingslib/widget/ProfileSelectFragment.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2022 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.settingslib.widget;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+import androidx.viewpager2.widget.ViewPager2;
+
+import com.google.android.material.tabs.TabLayout;
+import com.google.android.material.tabs.TabLayoutMediator;
+import com.android.settingslib.widget.profileselector.R;
+
+/**
+ * Base fragment class for profile settings.
+ */
+public abstract class ProfileSelectFragment extends Fragment {
+
+    /**
+     * Personal or Work profile tab of {@link ProfileSelectFragment}
+     * <p>0: Personal tab.
+     * <p>1: Work profile tab.
+     */
+    public static final String EXTRA_SHOW_FRAGMENT_TAB =
+            ":settings:show_fragment_tab";
+
+    /**
+     * Used in fragment argument with Extra key EXTRA_SHOW_FRAGMENT_TAB
+     */
+    public static final int PERSONAL_TAB = 0;
+
+    /**
+     * Used in fragment argument with Extra key EXTRA_SHOW_FRAGMENT_TAB
+     */
+    public static final int WORK_TAB = 1;
+
+    private ViewGroup mContentView;
+
+    private ViewPager2 mViewPager;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        // Defines the xml file for the fragment
+        mContentView = (ViewGroup) inflater.inflate(R.layout.tab_fragment, container, false);
+
+        final Activity activity = getActivity();
+        final int titleResId = getTitleResId();
+        if (titleResId > 0) {
+            activity.setTitle(titleResId);
+        }
+        final int selectedTab = getTabId(activity, getArguments());
+
+        final View tabContainer = mContentView.findViewById(R.id.tab_container);
+        mViewPager = tabContainer.findViewById(R.id.view_pager);
+        mViewPager.setAdapter(new ProfileViewPagerAdapter(this));
+        final TabLayout tabs = tabContainer.findViewById(R.id.tabs);
+        new TabLayoutMediator(tabs, mViewPager,
+                (tab, position) -> tab.setText(getPageTitle(position))
+        ).attach();
+
+        tabContainer.setVisibility(View.VISIBLE);
+        final TabLayout.Tab tab = tabs.getTabAt(selectedTab);
+        tab.select();
+
+        return mContentView;
+    }
+
+    /**
+     * create Personal or Work profile fragment
+     * <p>0: Personal profile.
+     * <p>1: Work profile.
+     */
+    public abstract Fragment createFragment(int position);
+
+    /**
+     * Returns a resource ID of the title
+     * Override this if the title needs to be updated dynamically.
+     */
+    public int getTitleResId() {
+        return 0;
+    }
+
+    int getTabId(Activity activity, Bundle bundle) {
+        if (bundle != null) {
+            final int extraTab = bundle.getInt(EXTRA_SHOW_FRAGMENT_TAB, -1);
+            if (extraTab != -1) {
+                return extraTab;
+            }
+        }
+        return PERSONAL_TAB;
+    }
+
+    private CharSequence getPageTitle(int position) {
+        if (position == WORK_TAB) {
+            return getContext().getString(R.string.settingslib_category_work);
+        }
+
+        return getString(R.string.settingslib_category_personal);
+    }
+}

SettingsLib/ProfileSelector/src/com/android/settingslib/widget/ProfileViewPagerAdapter.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 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.settingslib.widget;
+
+import androidx.fragment.app.Fragment;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+import com.android.settingslib.widget.profileselector.R;
+
+/**
+ * ViewPager Adapter to handle between TabLayout and ViewPager2
+ */
+public class ProfileViewPagerAdapter extends FragmentStateAdapter {
+
+    private final ProfileSelectFragment mParentFragments;
+
+    ProfileViewPagerAdapter(ProfileSelectFragment fragment) {
+        super(fragment);
+        mParentFragments = fragment;
+    }
+
+    @Override
+    public Fragment createFragment(int position) {
+        return mParentFragments.createFragment(position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return 2;
+    }
+}