mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 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 |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 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. |
| 15 | */ |
| 16 | package com.android.emergency; |
| 17 | |
mariagpuyol | 9109578 | 2016-03-24 17:52:28 -0700 | [diff] [blame] | 18 | import android.app.Activity; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 19 | import android.app.Fragment; |
| 20 | import android.app.FragmentManager; |
| 21 | import android.content.res.Configuration; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 22 | import android.support.annotation.LayoutRes; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 23 | import android.support.design.widget.TabLayout; |
| 24 | import android.support.design.widget.TabLayout.TabLayoutOnPageChangeListener; |
| 25 | import android.support.design.widget.TabLayout.ViewPagerOnTabSelectedListener; |
| 26 | import android.support.v13.app.FragmentStatePagerAdapter; |
| 27 | import android.support.v4.view.ViewPager; |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 28 | import android.util.Pair; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 29 | import android.view.MenuItem; |
mariagpuyol | 9109578 | 2016-03-24 17:52:28 -0700 | [diff] [blame] | 30 | import android.widget.Toolbar; |
mariagpuyol | 5874835 | 2016-03-09 15:36:28 -0800 | [diff] [blame] | 31 | |
mariagpuyol | 0ad3900 | 2016-04-05 12:53:41 -0700 | [diff] [blame] | 32 | import com.android.internal.annotations.VisibleForTesting; |
| 33 | |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 34 | import java.util.ArrayList; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 35 | /** |
mariagpuyol | 9be3265 | 2016-03-16 12:34:53 -0700 | [diff] [blame] | 36 | * An activity uses a tab layout to separate personal and medical information |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 37 | * from emergency contacts. |
| 38 | */ |
mariagpuyol | 9109578 | 2016-03-24 17:52:28 -0700 | [diff] [blame] | 39 | public abstract class EmergencyTabActivity extends Activity { |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 40 | private ViewPagerAdapter mTabsAdapter; |
| 41 | private TabLayout mTabLayout; |
| 42 | |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 43 | private ArrayList<Pair<String, Fragment>> mFragments; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 44 | |
mariagpuyol | 9be3265 | 2016-03-16 12:34:53 -0700 | [diff] [blame] | 45 | @Override |
| 46 | protected void onResume() { |
| 47 | super.onResume(); |
| 48 | int display_mode = getResources().getConfiguration().orientation; |
| 49 | |
| 50 | if (display_mode == Configuration.ORIENTATION_PORTRAIT) { |
| 51 | mTabLayout.setTabMode(TabLayout.MODE_FIXED); |
| 52 | mTabLayout.setTabGravity(TabLayout.GRAVITY_FILL); |
| 53 | } |
| 54 | } |
| 55 | |
mariagpuyol | de7a405 | 2016-03-18 12:32:43 -0700 | [diff] [blame] | 56 | @Override |
| 57 | public boolean onOptionsItemSelected(MenuItem item) { |
| 58 | switch (item.getItemId()) { |
| 59 | // Respond to the action bar's Up/Home button. |
| 60 | case android.R.id.home: |
| 61 | onBackPressed(); |
| 62 | return true; |
| 63 | } |
| 64 | return super.onOptionsItemSelected(item); |
| 65 | } |
| 66 | |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 67 | /** Returns the index of the currently selected tab. */ |
mariagpuyol | 0ad3900 | 2016-04-05 12:53:41 -0700 | [diff] [blame] | 68 | @VisibleForTesting |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 69 | public int getSelectedTabPosition() { |
| 70 | return mTabLayout.getSelectedTabPosition(); |
| 71 | } |
| 72 | |
| 73 | @Override |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 74 | public void setContentView(@LayoutRes int layoutResID) { |
mariagpuyol | 9be3265 | 2016-03-16 12:34:53 -0700 | [diff] [blame] | 75 | super.setContentView(layoutResID); |
mariagpuyol | 232daaf | 2016-03-09 11:26:00 -0800 | [diff] [blame] | 76 | setupTabs(); |
mariagpuyol | 9be3265 | 2016-03-16 12:34:53 -0700 | [diff] [blame] | 77 | Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar); |
mariagpuyol | 9109578 | 2016-03-24 17:52:28 -0700 | [diff] [blame] | 78 | setActionBar(toolbar); |
| 79 | getActionBar().setDisplayHomeAsUpEnabled(true); |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 80 | } |
| 81 | |
mariagpuyol | 7ee3df3 | 2016-03-30 12:14:39 -0700 | [diff] [blame] | 82 | /** Selects the tab at index {@code selectedTabIndex}. */ |
| 83 | public void selectTab(int selectedTabIndex) { |
| 84 | if (mTabLayout != null && selectedTabIndex >= 0 && |
| 85 | selectedTabIndex < mTabLayout.getTabCount()) { |
| 86 | mTabLayout.getTabAt(selectedTabIndex).select(); |
| 87 | } |
| 88 | } |
| 89 | |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 90 | protected void setupTabs() { |
| 91 | mFragments = setUpFragments(); |
| 92 | mTabLayout = (TabLayout) findViewById(R.id.sliding_tabs); |
| 93 | if (mTabsAdapter == null) { |
| 94 | // The viewpager that will host the section contents. |
| 95 | ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager); |
| 96 | mTabsAdapter = new ViewPagerAdapter(getFragmentManager()); |
| 97 | viewPager.setAdapter(mTabsAdapter); |
| 98 | mTabLayout.setTabsFromPagerAdapter(mTabsAdapter); |
| 99 | |
| 100 | // Set a listener via setOnTabSelectedListener(OnTabSelectedListener) to be notified |
| 101 | // when any tab's selection state has been changed. |
| 102 | mTabLayout.setOnTabSelectedListener( |
| 103 | new TabLayout.ViewPagerOnTabSelectedListener(viewPager)); |
| 104 | |
| 105 | // Use a TabLayout.TabLayoutOnPageChangeListener to forward the scroll and selection |
| 106 | // changes to this layout |
| 107 | viewPager.addOnPageChangeListener(new TabLayoutOnPageChangeListener(mTabLayout)); |
| 108 | } else { |
| 109 | mTabsAdapter.notifyDataSetChanged(); |
| 110 | mTabLayout.setTabsFromPagerAdapter(mTabsAdapter); |
| 111 | } |
| 112 | } |
| 113 | |
mariagpuyol | 50c09e0 | 2016-03-29 20:31:57 -0700 | [diff] [blame] | 114 | public TabLayout getTabLayout() { |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 115 | return mTabLayout; |
| 116 | } |
| 117 | |
mariagpuyol | 8875778 | 2016-03-29 15:15:08 -0700 | [diff] [blame] | 118 | /** Return the fragments. */ |
Maurice Lam | 109dfaf | 2017-01-12 21:35:10 -0800 | [diff] [blame] | 119 | @VisibleForTesting |
mariagpuyol | 8875778 | 2016-03-29 15:15:08 -0700 | [diff] [blame] | 120 | public ArrayList<Pair<String, Fragment>> getFragments() { |
| 121 | return mFragments; |
| 122 | } |
| 123 | |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 124 | /** Return number of fragments to show in the tabs. */ |
| 125 | public int getNumberFragments() { |
| 126 | return mFragments.size(); |
| 127 | } |
| 128 | |
Naoki Amano | 9d8f622 | 2016-09-15 21:08:57 +0900 | [diff] [blame] | 129 | /** Return the adapter. */ |
| 130 | protected ViewPagerAdapter getTabsAdapter() { |
| 131 | return mTabsAdapter; |
| 132 | } |
| 133 | |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 134 | /** Returns the fragments to show in the tabs. */ |
| 135 | protected abstract ArrayList<Pair<String, Fragment>> setUpFragments(); |
| 136 | |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 137 | /** The adapter used to handle the two fragments. */ |
Naoki Amano | 9d8f622 | 2016-09-15 21:08:57 +0900 | [diff] [blame] | 138 | protected class ViewPagerAdapter extends FragmentStatePagerAdapter { |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 139 | public ViewPagerAdapter(FragmentManager fm) { |
| 140 | super(fm); |
| 141 | } |
| 142 | |
| 143 | @Override |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 144 | public Fragment getItem(int position) { |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 145 | return mFragments.get(position).second; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | @Override |
| 149 | public int getCount() { |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 150 | return mFragments.size(); |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | @Override |
| 154 | public CharSequence getPageTitle(int position) { |
mariagpuyol | c3f3a80 | 2016-03-17 13:29:33 -0700 | [diff] [blame] | 155 | return mFragments.get(position).first; |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | public int getItemPosition(Object object) { |
| 160 | // The default implementation assumes that items will never change position and always |
| 161 | // returns POSITION_UNCHANGED. This is how you can specify that the positions can change |
| 162 | return FragmentStatePagerAdapter.POSITION_NONE; |
mariagpuyol | ea078ed | 2016-03-07 20:02:10 -0800 | [diff] [blame] | 163 | } |
| 164 | } |
| 165 | } |