java/examples-android/simplebase/src/main/java/org/iotivity/base/examples/DrawerFragment.java

   1 /*
   2  * ******************************************************************
   3  *
   4  * Copyright 2016 Samsung Electronics All Rights Reserved.
   5  *
   6  * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  * -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  21  */
  22
  23 package org.iotivity.base.examples;
  24
  25 import android.app.ActionBar;
  26 import android.app.Activity;
  27 import android.app.Fragment;
  28 import android.content.res.Configuration;
  29 import android.os.Bundle;
  30 import android.support.v4.app.ActionBarDrawerToggle;
  31 import android.support.v4.view.GravityCompat;
  32 import android.support.v4.widget.DrawerLayout;
  33 import android.view.LayoutInflater;
  34 import android.view.MenuItem;
  35 import android.view.View;
  36 import android.view.ViewGroup;
  37 import android.widget.AdapterView;
  38 import android.widget.ArrayAdapter;
  39 import android.widget.ListView;
  40
  41 /**
  42  * Through a drawer able to move to another menu.
  43  */
  44 public class DrawerFragment extends Fragment {
  45
  46     private static final String   STATE_SELECTED_POSITION  = "selected_navigation_drawer_position";
  47     private DrawerCallbacks       mCallbacks;
  48
  49     private ActionBarDrawerToggle mDrawerToggle;
  50
  51     private DrawerLayout          mDrawerLayout;
  52     private ListView              mDrawerListView;
  53     private View                  mFragmentContainerView;
  54
  55     private int                   mCurrentSelectedPosition = 0;
  56
  57     @Override
  58     public void onCreate(Bundle savedInstanceState) {
  59         super.onCreate(savedInstanceState);
  60
  61         if (savedInstanceState != null) {
  62             mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
  63         }
  64
  65         selectItem(mCurrentSelectedPosition);
  66     }
  67
  68     @Override
  69     public void onActivityCreated(Bundle savedInstanceState) {
  70         super.onActivityCreated(savedInstanceState);
  71         setHasOptionsMenu(true);
  72     }
  73
  74     @Override
  75     public View onCreateView(LayoutInflater inflater, ViewGroup container,
  76             Bundle savedInstanceState) {
  77         mDrawerListView = (ListView) inflater.inflate(R.layout.fragment_drawer,
  78                                                       container, false);
  79         mDrawerListView
  80                 .setOnItemClickListener(new AdapterView.OnItemClickListener() {
  81                     @Override
  82                     public void onItemClick(AdapterView<?> parent, View view,
  83                                             int position, long id) {
  84                         selectItem(position);
  85                     }
  86                 });
  87         mDrawerListView.setAdapter(new ArrayAdapter<String>(getActionBar()
  88                 .getThemedContext(),
  89                 android.R.layout.simple_list_item_activated_1,
  90                 android.R.id.text1, new String[] {
  91                         getString(R.string.title_message),
  92                         getString(R.string.title_bluetooth),
  93                         getString(R.string.title_cloud),
  94                         getString(R.string.title_template), }));
  95         mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
  96
  97         return mDrawerListView;
  98     }
  99
 100     public void setUp(int fragmentId, DrawerLayout drawerLayout) {
 101         mFragmentContainerView = getActivity().findViewById(fragmentId);
 102         mDrawerLayout = drawerLayout;
 103
 104         mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
 105                                       GravityCompat.START);
 106
 107         ActionBar actionBar = getActionBar();
 108         actionBar.setDisplayHomeAsUpEnabled(true);
 109         actionBar.setHomeButtonEnabled(true);
 110         mDrawerToggle = new ActionBarDrawerToggle(getActivity(),
 111                                                   mDrawerLayout,
 112                                                   R.drawable.ic_drawer,
 113                                                   R.string.navigation_drawer_open,
 114                                                   R.string.navigation_drawer_close) {
 115             @Override
 116             public void onDrawerClosed(View drawerView) {
 117                 super.onDrawerClosed(drawerView);
 118                 if (!isAdded()) {
 119                     return;
 120                 }
 121
 122                 getActivity().invalidateOptionsMenu();
 123             }
 124
 125             @Override
 126             public void onDrawerOpened(View drawerView) {
 127                 super.onDrawerOpened(drawerView);
 128                 if (!isAdded()) {
 129                     return;
 130                 }
 131
 132                 getActivity().invalidateOptionsMenu();
 133             }
 134         };
 135
 136         mDrawerLayout.post(new Runnable() {
 137             @Override
 138             public void run() {
 139                 mDrawerToggle.syncState();
 140             }
 141         });
 142
 143         mDrawerLayout.setDrawerListener(mDrawerToggle);
 144     }
 145
 146     private void selectItem(int position) {
 147         mCurrentSelectedPosition = position;
 148         if (mDrawerListView != null) {
 149             mDrawerListView.setItemChecked(position, true);
 150         }
 151         if (mDrawerLayout != null) {
 152             mDrawerLayout.closeDrawer(mFragmentContainerView);
 153         }
 154         if (mCallbacks != null) {
 155             mCallbacks.onDrawerItemSelected(position);
 156         }
 157     }
 158
 159     @Override
 160     public void onAttach(Activity activity) {
 161         super.onAttach(activity);
 162         try {
 163             mCallbacks = (DrawerCallbacks) activity;
 164         } catch (ClassCastException e) {
 165             throw new ClassCastException("Activity must implement DrawerCallbacks.");
 166         }
 167     }
 168
 169     @Override
 170     public void onDetach() {
 171         super.onDetach();
 172         mCallbacks = null;
 173     }
 174
 175     @Override
 176     public void onSaveInstanceState(Bundle outState) {
 177         super.onSaveInstanceState(outState);
 178         outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
 179     }
 180
 181     @Override
 182     public void onConfigurationChanged(Configuration newConfig) {
 183         super.onConfigurationChanged(newConfig);
 184         mDrawerToggle.onConfigurationChanged(newConfig);
 185     }
 186
 187     @Override
 188     public boolean onOptionsItemSelected(MenuItem item) {
 189         if (mDrawerToggle.onOptionsItemSelected(item)) {
 190             return true;
 191         }
 192
 193         return super.onOptionsItemSelected(item);
 194     }
 195
 196     private ActionBar getActionBar() {
 197         return getActivity().getActionBar();
 198     }
 199
 200     public static interface DrawerCallbacks {
 201         void onDrawerItemSelected(int position);
 202     }
 203 }