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_template), }));
  94         mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
  95
  96         return mDrawerListView;
  97     }
  98
  99     public void setUp(int fragmentId, DrawerLayout drawerLayout) {
 100         mFragmentContainerView = getActivity().findViewById(fragmentId);
 101         mDrawerLayout = drawerLayout;
 102
 103         mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
 104                                       GravityCompat.START);
 105
 106         ActionBar actionBar = getActionBar();
 107         actionBar.setDisplayHomeAsUpEnabled(true);
 108         actionBar.setHomeButtonEnabled(true);
 109         mDrawerToggle = new ActionBarDrawerToggle(getActivity(),
 110                                                   mDrawerLayout,
 111                                                   R.drawable.ic_drawer,
 112                                                   R.string.navigation_drawer_open,
 113                                                   R.string.navigation_drawer_close) {
 114             @Override
 115             public void onDrawerClosed(View drawerView) {
 116                 super.onDrawerClosed(drawerView);
 117                 if (!isAdded()) {
 118                     return;
 119                 }
 120
 121                 getActivity().invalidateOptionsMenu();
 122             }
 123
 124             @Override
 125             public void onDrawerOpened(View drawerView) {
 126                 super.onDrawerOpened(drawerView);
 127                 if (!isAdded()) {
 128                     return;
 129                 }
 130
 131                 getActivity().invalidateOptionsMenu();
 132             }
 133         };
 134
 135         mDrawerLayout.post(new Runnable() {
 136             @Override
 137             public void run() {
 138                 mDrawerToggle.syncState();
 139             }
 140         });
 141
 142         mDrawerLayout.setDrawerListener(mDrawerToggle);
 143     }
 144
 145     private void selectItem(int position) {
 146         mCurrentSelectedPosition = position;
 147         if (mDrawerListView != null) {
 148             mDrawerListView.setItemChecked(position, true);
 149         }
 150         if (mDrawerLayout != null) {
 151             mDrawerLayout.closeDrawer(mFragmentContainerView);
 152         }
 153         if (mCallbacks != null) {
 154             mCallbacks.onDrawerItemSelected(position);
 155         }
 156     }
 157
 158     @Override
 159     public void onAttach(Activity activity) {
 160         super.onAttach(activity);
 161         try {
 162             mCallbacks = (DrawerCallbacks) activity;
 163         } catch (ClassCastException e) {
 164             throw new ClassCastException("Activity must implement DrawerCallbacks.");
 165         }
 166     }
 167
 168     @Override
 169     public void onDetach() {
 170         super.onDetach();
 171         mCallbacks = null;
 172     }
 173
 174     @Override
 175     public void onSaveInstanceState(Bundle outState) {
 176         super.onSaveInstanceState(outState);
 177         outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
 178     }
 179
 180     @Override
 181     public void onConfigurationChanged(Configuration newConfig) {
 182         super.onConfigurationChanged(newConfig);
 183         mDrawerToggle.onConfigurationChanged(newConfig);
 184     }
 185
 186     @Override
 187     public boolean onOptionsItemSelected(MenuItem item) {
 188         if (mDrawerToggle.onOptionsItemSelected(item)) {
 189             return true;
 190         }
 191
 192         return super.onOptionsItemSelected(item);
 193     }
 194
 195     private ActionBar getActionBar() {
 196         return getActivity().getActionBar();
 197     }
 198
 199     public static interface DrawerCallbacks {
 200         void onDrawerItemSelected(int position);
 201     }
 202 }