2 * Copyright (C) 2013 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.android.photos;
19 import android.app.ActionBar;
20 import android.app.ActionBar.Tab;
21 import android.app.Activity;
22 import android.app.Fragment;
23 import android.app.FragmentTransaction;
24 import android.content.Intent;
25 import android.os.Bundle;
26 import androidx.legacy.app.FragmentPagerAdapter;
27 import androidx.viewpager.widget.ViewPager;
28 import android.view.Menu;
29 import android.view.MenuItem;
30 import android.view.ViewGroup;
32 import com.android.gallery3d.R;
34 import java.util.ArrayList;
36 public class GalleryActivity extends Activity implements MultiChoiceManager.Provider {
38 private MultiChoiceManager mMultiChoiceManager;
39 private ViewPager mViewPager;
40 private TabsAdapter mTabsAdapter;
43 protected void onCreate(Bundle savedInstanceState) {
44 super.onCreate(savedInstanceState);
45 mMultiChoiceManager = new MultiChoiceManager(this);
46 mViewPager = new ViewPager(this);
47 mViewPager.setId(R.id.viewpager);
48 setContentView(mViewPager);
50 ActionBar ab = getActionBar();
51 ab.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
52 ab.setDisplayShowHomeEnabled(false);
53 ab.setDisplayShowTitleEnabled(false);
55 mTabsAdapter = new TabsAdapter(this, mViewPager);
56 mTabsAdapter.addTab(ab.newTab().setText(R.string.tab_photos),
57 PhotoSetFragment.class, null);
58 mTabsAdapter.addTab(ab.newTab().setText(R.string.tab_albums),
59 AlbumSetFragment.class, null);
61 if (savedInstanceState != null) {
62 ab.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0));
67 protected void onSaveInstanceState(Bundle outState) {
68 super.onSaveInstanceState(outState);
69 outState.putInt("tab", getActionBar().getSelectedNavigationIndex());
73 public boolean onCreateOptionsMenu(Menu menu) {
74 getMenuInflater().inflate(R.menu.gallery, menu);
79 public boolean onOptionsItemSelected(MenuItem item) {
80 switch (item.getItemId()) {
81 case R.id.menu_camera:
82 // TODO: Call the correct Camera intent.
83 throw new RuntimeException("Not implemented yet.");
84 // Intent intent = new Intent(this, CameraActivity.class);
85 // intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
86 // startActivity(intent);
89 return super.onOptionsItemSelected(item);
93 public static class TabsAdapter extends FragmentPagerAdapter implements
94 ActionBar.TabListener, ViewPager.OnPageChangeListener {
96 private final GalleryActivity mActivity;
97 private final ActionBar mActionBar;
98 private final ViewPager mViewPager;
99 private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
101 static final class TabInfo {
103 private final Class<?> clss;
104 private final Bundle args;
106 TabInfo(Class<?> _class, Bundle _args) {
112 public TabsAdapter(GalleryActivity activity, ViewPager pager) {
113 super(activity.getFragmentManager());
114 mActivity = activity;
115 mActionBar = activity.getActionBar();
117 mViewPager.setAdapter(this);
118 mViewPager.setOnPageChangeListener(this);
121 public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
122 TabInfo info = new TabInfo(clss, args);
124 tab.setTabListener(this);
126 mActionBar.addTab(tab);
127 notifyDataSetChanged();
131 public int getCount() {
136 public Fragment getItem(int position) {
137 TabInfo info = mTabs.get(position);
138 return Fragment.instantiate(mActivity, info.clss.getName(),
143 public void onPageScrolled(int position, float positionOffset,
144 int positionOffsetPixels) {
148 public void onPageSelected(int position) {
149 mActionBar.setSelectedNavigationItem(position);
153 public void setPrimaryItem(ViewGroup container, int position, Object object) {
154 super.setPrimaryItem(container, position, object);
155 mActivity.mMultiChoiceManager.setDelegate((MultiChoiceManager.Delegate) object);
159 public void onPageScrollStateChanged(int state) {
163 public void onTabSelected(Tab tab, FragmentTransaction ft) {
164 Object tag = tab.getTag();
165 for (int i = 0; i < mTabs.size(); i++) {
166 if (mTabs.get(i) == tag) {
167 mViewPager.setCurrentItem(i);
173 public void onTabUnselected(Tab tab, FragmentTransaction ft) {
177 public void onTabReselected(Tab tab, FragmentTransaction ft) {
182 public MultiChoiceManager getMultiChoiceManager() {
183 return mMultiChoiceManager;