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The source code is released under:
GNU General Public License
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package de.kk.wifilocalizer.ui.fragments; // ww w. j av a 2 s. c o m import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.app.Fragment; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.CompoundButton; import android.widget.ListView; import de.kk.wifilocalizer.R; import de.kk.wifilocalizer.core.CoreManager; import de.kk.wifilocalizer.ui.activities.MainActivity; import de.kk.wifilocalizer.ui.activities.SettingsActivity; /** * Responsible for NavigationDrawer */ public class NavDrawerFragment extends Fragment { private NavDrawerCallbacks mCallbacks; private ActionBarDrawerToggle mDrawerToggle; private DrawerLayout mDrawerLayout; private ListView mDrawerListView; private View mFragmentContainerView; private int mCurrentSelectedPosition = 0; private boolean mFromSavedInstanceState; private boolean mUserLearnedDrawer; private CharSequence mTitle, mDrawerTitle; private String[] mFragmentTitles; private CompoundButton toggle; public NavDrawerFragment() { // Required empty public constructor } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get info whether user has used navigation drawer in the past SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity()); mUserLearnedDrawer = sp.getBoolean(MainActivity.NAVDRAWER_USER_LEARNED_DRAWER, false); if (savedInstanceState != null) { mCurrentSelectedPosition = savedInstanceState.getInt(MainActivity.NAVDRAWER_STATE_SELECTED_POSITION); mFromSavedInstanceState = true; } mTitle = mDrawerTitle = getString(R.string.app_name); // Select either the default item (0) or the last selected item selectItem(mCurrentSelectedPosition); mFragmentTitles = getResources().getStringArray(R.array.fragments_array); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_navdrawer, container, false); mDrawerListView = (ListView) view.findViewById(R.id.navdrawerlist); mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (mCurrentSelectedPosition == position) mDrawerLayout.closeDrawer(mFragmentContainerView); else selectItem(position); } }); mDrawerListView.setAdapter(new ArrayAdapter<String>(getActionBar().getThemedContext(), R.layout.navdrawer_list_item, R.id.list_item, mFragmentTitles)); mDrawerListView.setItemChecked(mCurrentSelectedPosition, true); toggle = (CompoundButton) view.findViewById(R.id.togglebutton); toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity()); if (isChecked) { CoreManager.startFetching(); sp.edit().putBoolean(MainActivity.WIFI_FETCHING_TOGGLE_ON, true).commit(); } else { CoreManager.stopFetching(); sp.edit().putBoolean(MainActivity.WIFI_FETCHING_TOGGLE_ON, false).commit(); } } }); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // Indicate that this fragment would like to influence the set of actions in the action bar setHasOptionsMenu(true); } /** * Info about navigation drawer * * @return state of navigation drawer */ public boolean isDrawerOpen() { return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView); } /** * Users of this fragment must call this method to set up the navigation drawer interactions. * * @param fragmentId * The android:id of this fragment in its activity's layout. * @param drawerLayout * The DrawerLayout containing this fragment's UI. */ public void setUp(int fragmentId, DrawerLayout drawerLayout) { mFragmentContainerView = getActivity().findViewById(fragmentId); mDrawerLayout = drawerLayout; // set a custom shadow that overlays the main content when the drawer // opens mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); // set up the drawer's list view with items and click listener ActionBar actionBar = getActionBar(); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setHomeButtonEnabled(true); // ActionBarDrawerToggle ties together the the proper interactions // between the navigation drawer and the action bar app icon. mDrawerToggle = new ActionBarDrawerToggle(getActivity(), /* * host Activity */ mDrawerLayout, /* DrawerLayout object */ R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */ R.string.navigation_drawer_open, /* * "open drawer" description for accessibility */ R.string.navigation_drawer_close /* * "close drawer" description for accessibility */ ) { @Override public void onDrawerClosed(View drawerView) { super.onDrawerClosed(drawerView); if (!isAdded()) { return; } getActionBar().setTitle(mTitle); getActivity().supportInvalidateOptionsMenu(); // calls // onPrepareOptionsMenu() } @Override public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); if (!isAdded()) { return; } if (!mUserLearnedDrawer) { // The user manually opened the drawer; store this flag to // prevent auto-showing // the navigation drawer automatically in the future. mUserLearnedDrawer = true; SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity()); sp.edit().putBoolean(MainActivity.NAVDRAWER_USER_LEARNED_DRAWER, true).commit(); } getActionBar().setTitle(mDrawerTitle); getActivity().supportInvalidateOptionsMenu(); // calls // onPrepareOptionsMenu() } }; // If the user hasn't 'learned' about the drawer, open it to introduce // them to the drawer, // per the navigation drawer design guidelines. if (!mUserLearnedDrawer && !mFromSavedInstanceState) { mDrawerLayout.openDrawer(mFragmentContainerView); } // Defer code dependent on restoration of previous instance state. mDrawerLayout.post(new Runnable() { @Override public void run() { mDrawerToggle.syncState(); } }); setTitle(mFragmentTitles[mCurrentSelectedPosition]); mDrawerLayout.setDrawerListener(mDrawerToggle); } private void selectItem(int position) { mCurrentSelectedPosition = position; if (mDrawerListView != null) { mDrawerListView.setItemChecked(position, true); } if (mDrawerLayout != null) { setTitle(mFragmentTitles[position]); mDrawerLayout.closeDrawer(mFragmentContainerView); } if (mCallbacks != null) { mCallbacks.onNavDrawerItemSelected(position); } } // method for updating NavDrawer mainly for MapsFragment-onMapSelected() public void updateNavDrawer(int position) { mCurrentSelectedPosition = position; if (mDrawerListView != null) { mDrawerListView.setItemChecked(position, true); } if (mDrawerLayout != null) { setTitle(mFragmentTitles[position]); } } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mCallbacks = (NavDrawerCallbacks) activity; } catch (ClassCastException e) { throw new ClassCastException("Activity must implement NavDrawerCallbacks."); } } @Override public void onDetach() { super.onDetach(); mCallbacks = null; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(MainActivity.NAVDRAWER_STATE_SELECTED_POSITION, mCurrentSelectedPosition); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Forward the new configuration the drawer toggle component. mDrawerToggle.onConfigurationChanged(newConfig); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.menu, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public void onPrepareOptionsMenu(Menu menu) { if (!isDrawerOpen()) { if (mTitle.equals(getString(R.string.localization_fragment))) { menu.findItem(R.id.action_add).setVisible(false); menu.findItem(R.id.action_showHidePoints).setVisible(true); menu.findItem(R.id.action_removeMeasuredPoints).setVisible(true); } else if (mTitle.equals(getString(R.string.signals_fragment))) { menu.findItem(R.id.action_add).setVisible(false); menu.findItem(R.id.action_showHidePoints).setVisible(false); menu.findItem(R.id.action_removeMeasuredPoints).setVisible(false); } else if (mTitle.equals(getString(R.string.maps_fragment))) { menu.findItem(R.id.action_add).setVisible(true); menu.findItem(R.id.action_showHidePoints).setVisible(false); menu.findItem(R.id.action_removeMeasuredPoints).setVisible(false); } } else { menu.findItem(R.id.action_add).setVisible(false); menu.findItem(R.id.action_showHidePoints).setVisible(false); menu.findItem(R.id.action_removeMeasuredPoints).setVisible(false); } super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // The action bar home/up action should open or close the drawer. // ActionBarDrawerToggle will take care of this. if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action buttons, rest in responsible fragments switch (item.getItemId()) { case R.id.action_settings: Intent intent = new Intent(getActivity(), SettingsActivity.class); startActivity(intent); return true; case R.id.action_help: new AlertDialog.Builder(getActivity()).setTitle(R.string.help_dialog_title) .setMessage(R.string.help_dialog_message) .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // do nothing } }).show(); return true; case R.id.action_about: new AlertDialog.Builder(getActivity()).setTitle(R.string.about_dialog_title) .setMessage(R.string.about_dialog_message) .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // do nothing } }).show(); return true; default: return super.onOptionsItemSelected(item); } } public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(mTitle); } private ActionBar getActionBar() { return ((ActionBarActivity) getActivity()).getSupportActionBar(); } /** * Callbacks interface that all activities using this fragment must implement. */ public static interface NavDrawerCallbacks { /** * Called when an item in the navigation drawer is selected. */ void onNavDrawerItemSelected(int position); } }