rpicms-android

Android app for the RPICMS.
git clone git://archive.git.mtrnord.blog/RpicmsTeam/rpicms-android.git
Log | Files | Refs

NavigationDrawerFragment.java (10950B)

      1 package de.nordgedanken.rpicms;
      2 
      3 
      4 import android.app.Activity;
      5 import android.app.ActionBar;
      6 import android.app.Fragment;
      7 import android.net.http.AndroidHttpClient;
      8 import android.provider.Settings;
      9 import android.support.v4.app.ActionBarDrawerToggle;
     10 import android.support.v4.view.GravityCompat;
     11 import android.support.v4.widget.DrawerLayout;
     12 import android.content.SharedPreferences;
     13 import android.content.res.Configuration;
     14 import android.os.Bundle;
     15 import android.preference.PreferenceManager;
     16 import android.test.mock.MockApplication;
     17 import android.view.LayoutInflater;
     18 import android.view.Menu;
     19 import android.view.MenuInflater;
     20 import android.view.MenuItem;
     21 import android.view.View;
     22 import android.view.ViewGroup;
     23 import android.widget.AdapterView;
     24 import android.widget.ArrayAdapter;
     25 import android.widget.ListView;
     26 import android.widget.Toast;
     27 
     28 import static android.provider.Settings.System.VOLUME_ALARM;
     29 
     30 /**
     31  * Fragment used for managing interactions for and presentation of a navigation drawer.
     32  * See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
     33  * design guidelines</a> for a complete explanation of the behaviors implemented here.
     34  */
     35 public class NavigationDrawerFragment extends Fragment {
     36 
     37     /**
     38      * Remember the position of the selected item.
     39      */
     40     private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
     41 
     42     /**
     43      * Per the design guidelines, you should show the drawer on launch until the user manually
     44      * expands it. This shared preference tracks this.
     45      */
     46     private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
     47 
     48     /**
     49      * A pointer to the current callbacks instance (the Activity).
     50      */
     51     private NavigationDrawerCallbacks mCallbacks;
     52 
     53     /**
     54      * Helper component that ties the action bar to the navigation drawer.
     55      */
     56     private ActionBarDrawerToggle mDrawerToggle;
     57 
     58     private DrawerLayout mDrawerLayout;
     59     private ListView mDrawerListView;
     60     private View mFragmentContainerView;
     61 
     62     private int mCurrentSelectedPosition = 0;
     63     private boolean mFromSavedInstanceState;
     64     private boolean mUserLearnedDrawer;
     65 
     66     public NavigationDrawerFragment() {
     67     }
     68 
     69     @Override
     70     public void onCreate(Bundle savedInstanceState) {
     71         super.onCreate(savedInstanceState);
     72 
     73         // Read in the flag indicating whether or not the user has demonstrated awareness of the
     74         // drawer. See PREF_USER_LEARNED_DRAWER for details.
     75         SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
     76         mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
     77 
     78         if (savedInstanceState != null) {
     79             mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
     80             mFromSavedInstanceState = true;
     81         }
     82 
     83         // Select either the default item (0) or the last selected item.
     84         selectItem(mCurrentSelectedPosition);
     85     }
     86 
     87     @Override
     88     public void onActivityCreated (Bundle savedInstanceState) {
     89         super.onActivityCreated(savedInstanceState);
     90         // Indicate that this fragment would like to influence the set of actions in the action bar.
     91         setHasOptionsMenu(true);
     92     }
     93 
     94     @Override
     95     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     96             Bundle savedInstanceState) {
     97         mDrawerListView = (ListView) inflater.inflate(
     98                 R.layout.fragment_navigation_drawer, container, false);
     99         mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    100             @Override
    101             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    102                 selectItem(position);
    103             }
    104         });
    105         mDrawerListView.setAdapter(new ArrayAdapter<String>(
    106                 getActionBar().getThemedContext(),
    107                 android.R.layout.simple_list_item_activated_1,
    108                 android.R.id.text1,
    109                 new String[]{
    110                         getString(R.string.title_section1),
    111                         getString(R.string.title_section2),
    112                         getString(R.string.title_section3),
    113                 }));
    114         mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
    115         return mDrawerListView;
    116     }
    117 
    118     public boolean isDrawerOpen() {
    119         return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
    120     }
    121 
    122     /**
    123      * Users of this fragment must call this method to set up the navigation drawer interactions.
    124      *
    125      * @param fragmentId   The android:id of this fragment in its activity's layout.
    126      * @param drawerLayout The DrawerLayout containing this fragment's UI.
    127      */
    128     public void setUp(int fragmentId, DrawerLayout drawerLayout) {
    129         mFragmentContainerView = getActivity().findViewById(fragmentId);
    130         mDrawerLayout = drawerLayout;
    131 
    132         // set a custom shadow that overlays the main content when the drawer opens
    133         mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
    134         // set up the drawer's list view with items and click listener
    135 
    136         ActionBar actionBar = getActionBar();
    137         actionBar.setDisplayHomeAsUpEnabled(true);
    138         actionBar.setHomeButtonEnabled(true);
    139 
    140         // ActionBarDrawerToggle ties together the the proper interactions
    141         // between the navigation drawer and the action bar app icon.
    142         mDrawerToggle = new ActionBarDrawerToggle(
    143                 getActivity(),                    /* host Activity */
    144                 mDrawerLayout,                    /* DrawerLayout object */
    145                 R.drawable.ic_drawer,             /* nav drawer image to replace 'Up' caret */
    146                 R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */
    147                 R.string.navigation_drawer_close  /* "close drawer" description for accessibility */
    148         ) {
    149             @Override
    150             public void onDrawerClosed(View drawerView) {
    151                 super.onDrawerClosed(drawerView);
    152                 if (!isAdded()) {
    153                     return;
    154                 }
    155 
    156                 getActivity().invalidateOptionsMenu(); // calls onPrepareOptionsMenu()
    157             }
    158 
    159             @Override
    160             public void onDrawerOpened(View drawerView) {
    161                 super.onDrawerOpened(drawerView);
    162                 if (!isAdded()) {
    163                     return;
    164                 }
    165 
    166                 if (!mUserLearnedDrawer) {
    167                     // The user manually opened the drawer; store this flag to prevent auto-showing
    168                     // the navigation drawer automatically in the future.
    169                     mUserLearnedDrawer = true;
    170                     SharedPreferences sp = PreferenceManager
    171                             .getDefaultSharedPreferences(getActivity());
    172                     sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
    173                 }
    174 
    175                 getActivity().invalidateOptionsMenu(); // calls onPrepareOptionsMenu()
    176             }
    177         };
    178 
    179         // If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
    180         // per the navigation drawer design guidelines.
    181         if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
    182             mDrawerLayout.openDrawer(mFragmentContainerView);
    183         }
    184 
    185         // Defer code dependent on restoration of previous instance state.
    186         mDrawerLayout.post(new Runnable() {
    187             @Override
    188             public void run() {
    189                 mDrawerToggle.syncState();
    190             }
    191         });
    192 
    193         mDrawerLayout.setDrawerListener(mDrawerToggle);
    194     }
    195 
    196     private void selectItem(int position) {
    197         mCurrentSelectedPosition = position;
    198         if (mDrawerListView != null) {
    199             mDrawerListView.setItemChecked(position, true);
    200         }
    201         if (mDrawerLayout != null) {
    202             mDrawerLayout.closeDrawer(mFragmentContainerView);
    203         }
    204         if (mCallbacks != null) {
    205             mCallbacks.onNavigationDrawerItemSelected(position);
    206         }
    207     }
    208 
    209     @Override
    210     public void onAttach(Activity activity) {
    211         super.onAttach(activity);
    212         try {
    213             mCallbacks = (NavigationDrawerCallbacks) activity;
    214         } catch (ClassCastException e) {
    215             throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
    216         }
    217     }
    218 
    219     @Override
    220     public void onDetach() {
    221         super.onDetach();
    222         mCallbacks = null;
    223     }
    224 
    225     @Override
    226     public void onSaveInstanceState(Bundle outState) {
    227         super.onSaveInstanceState(outState);
    228         outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
    229     }
    230 
    231     @Override
    232     public void onConfigurationChanged(Configuration newConfig) {
    233         super.onConfigurationChanged(newConfig);
    234         // Forward the new configuration the drawer toggle component.
    235         mDrawerToggle.onConfigurationChanged(newConfig);
    236     }
    237 
    238     @Override
    239     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    240         // If the drawer is open, show the global app actions in the action bar. See also
    241         // showGlobalContextActionBar, which controls the top-left area of the action bar.
    242         if (mDrawerLayout != null && isDrawerOpen()) {
    243             inflater.inflate(R.menu.global, menu);
    244             showGlobalContextActionBar();
    245         }
    246         super.onCreateOptionsMenu(menu, inflater);
    247     }
    248 
    249     @Override
    250     public boolean onOptionsItemSelected(MenuItem item) {
    251         if (mDrawerToggle.onOptionsItemSelected(item)) {
    252             return true;
    253         }
    254 
    255         if (item.getItemId() == R.id.action_sync) {
    256             Toast.makeText(getActivity(), "Syncing...", Toast.LENGTH_SHORT).show();
    257 
    258             return true;
    259         }
    260         if (item.getItemId() == R.id.action_synctab) {
    261             Toast.makeText(getActivity(), "Syncing...", Toast.LENGTH_SHORT).show();
    262             return true;
    263         }
    264 
    265         return super.onOptionsItemSelected(item);
    266     }
    267 
    268     /**
    269      * Per the navigation drawer design guidelines, updates the action bar to show the global app
    270      * 'context', rather than just what's in the current screen.
    271      */
    272     private void showGlobalContextActionBar() {
    273         ActionBar actionBar = getActionBar();
    274         actionBar.setDisplayShowTitleEnabled(true);
    275         actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
    276         actionBar.setTitle(R.string.app_name);
    277     }
    278 
    279     private ActionBar getActionBar() {
    280         return getActivity().getActionBar();
    281     }
    282 
    283     /**
    284      * Callbacks interface that all activities using this fragment must implement.
    285      */
    286     public static interface NavigationDrawerCallbacks {
    287         /**
    288          * Called when an item in the navigation drawer is selected.
    289          */
    290         void onNavigationDrawerItemSelected(int position);
    291     }
    292 }