app/src/main/java/de/dhbwloe/campusapp/CampusApp.java

   1 package de.dhbwloe.campusapp;
   2
   3 import android.content.Context;
   4 import android.content.Intent;
   5 import android.nfc.NfcAdapter;
   6 import android.os.Bundle;
   7 import android.support.design.widget.FloatingActionButton;
   8 import android.support.design.widget.Snackbar;
   9 import android.support.v4.app.FragmentActivity;
  10 import android.util.Log;
  11 import android.view.KeyEvent;
  12 import android.view.View;
  13 import android.support.design.widget.NavigationView;
  14 import android.support.v4.view.GravityCompat;
  15 import android.support.v4.widget.DrawerLayout;
  16 import android.support.v7.app.ActionBarDrawerToggle;
  17 import android.support.v7.app.AppCompatActivity;
  18 import android.support.v7.widget.Toolbar;
  19 import android.view.Menu;
  20 import android.view.MenuItem;
  21 import android.view.inputmethod.EditorInfo;
  22 import android.view.inputmethod.InputMethodManager;
  23 import android.widget.EditText;
  24 import android.widget.ImageView;
  25 import android.widget.LinearLayout;
  26 import android.widget.TextView;
  27
  28 import java.util.Date;
  29
  30 import de.dhbwloe.campusapp.nfcreader.NfcCardListener;
  31
  32 public class CampusApp extends FragmentActivity {
  33
  34     private boolean bSearchActive = false;
  35     private CampusAppContext AppContext = null;
  36
  37     /*
  38     * Dev Info:
  39     *
  40     * Die App besteht aus einer einzigen Activity, auf welcher dynamisch Fragmente platziert werden.
  41     * Das Menü, sowie die Headerleiste befinden sich auf der Activity, sind dementsprechend immer verfügbar.
  42     *
  43     * Zur laufzeit der App wird eine einzige Instanz der Klasse CampusAppContext angelegt.
  44     * Dieser Kontext dient als einstiegspunkt für sämmtliche global verfügbaren verwaltungs tools.
  45     * Dazu gehören:
  46     *   AppContext.getNavigationManager()    NavigationManager   Verwaltet die angezeigten Fragmente und deren Navigation
  47     *                                                            .navigatePage("Dashboard")  to navigate to the Dashboard
  48     *   ... to be continued ...
  49      */
  50
  51     @Override
  52     protected void onCreate(Bundle savedInstanceState) {
  53         Log.i("CampusApp", "Event: onCreate");
  54         super.onCreate(savedInstanceState);
  55         setContentView(R.layout.activity_campus_app);
  56
  57         AppContext = CampusAppContext.getInstance();
  58         if(AppContext == null)
  59             AppContext = new CampusAppContext(this, R.id.fragment_container);
  60         else
  61             AppContext.setMainActivity(this);
  62
  63         boolean instantRestore = false;
  64         if(savedInstanceState != null) {
  65             long lastrun = savedInstanceState.getLong("lastrun");
  66             lastrun = ((new Date()).getTime()/1000) - lastrun;
  67             Log.i("CampusApp", "Restored from Idle state! Idled: "+lastrun+" secs");
  68             if(lastrun < 30) {
  69                 instantRestore = true;
  70
  71                 AppContext.setTitle(savedInstanceState.getString("activetitle"));
  72             }
  73
  74
  75             Bundle contextVars = savedInstanceState.getBundle("savedContextVariables");
  76             if(contextVars != null) {
  77                 Bundle contextVariables = AppContext.getContextVariables();
  78                 contextVariables.putAll(contextVars);
  79             }
  80         }
  81
  82         prepareMainUi();
  83         if(instantRestore) // orientation change
  84             loadMainUi();
  85         else
  86             // don't add navigation to SlashScreen, or even from SplashScreen to Dashboard to the history log!
  87             // it would be very strange to return to the SplashScreen or an "empty" page on return ;)
  88             AppContext.getNavigationManager().navigatePage("SplashScreen", null, false);
  89
  90     }
  91
  92     @Override
  93     public void onSaveInstanceState(Bundle savedInstanceState) {
  94         Log.i("CampusApp", "Event: onSaveInstanceState");
  95         // Save instance state during "restarts" due to orientation changes.
  96         // We don't want to see the splash screen everytime the orientation changes ;)
  97         savedInstanceState.putLong("lastrun", (new Date()).getTime() / 1000);
  98         savedInstanceState.putString("activepage", AppContext.getNavigationManager().getCurrentPageName());
  99         TextView titleView = (TextView) findViewById(R.id.title);
 100         savedInstanceState.putString("activetitle", titleView.getText().toString());
 101
 102         Bundle contextVariables = AppContext.getContextVariables();
 103         savedInstanceState.putBundle("savedContextVariables", contextVariables);
 104
 105         // Always call the superclass so it can save the view hierarchy state
 106         super.onSaveInstanceState(savedInstanceState);
 107
 108         AppContext = null; // simulate GC
 109     }
 110
 111     public void prepareMainUi() {
 112         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 113         btnOpenSearch.setVisibility(View.GONE);
 114     }
 115
 116     public void loadMainUi() {
 117         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 118
 119         btnOpenSearch.setVisibility(View.VISIBLE);
 120         setupActionBar();
 121         setupSearchTriggers();
 122
 123         AppContext.getNfcCardListener().startNfcListener();
 124     }
 125
 126     private void setupActionBar() {
 127         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
 128         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 129         ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 130         drawer.setDrawerListener(toggle);
 131         toggle.syncState();
 132
 133         NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
 134         navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
 135             @SuppressWarnings("StatementWithEmptyBody")
 136             @Override
 137             public boolean onNavigationItemSelected(MenuItem item) {
 138                 // Handle navigation view item clicks here.
 139                 int id = item.getItemId();
 140
 141                 switch (id) { // Navigation Items from res/menu/activity_campus_app_drawer.xml
 142                     case R.id.nav_dashboard:
 143                         AppContext.getNavigationManager().navigatePage("Dashboard");
 144                         break;
 145                     case R.id.nav_vorlesungsplan:
 146                         AppContext.getNavigationManager().navigatePage("Vorlesungsplan");
 147                         break;
 148                     case R.id.nav_mensa:
 149                         AppContext.getNavigationManager().navigatePage("Mensa");
 150                         break;
 151                     case R.id.nav_news:
 152                         AppContext.getNavigationManager().navigatePage("News");
 153                         break;
 154                     case R.id.nav_settings:
 155                         Intent settings = new Intent(AppContext.getMainActivity(), SettingsActivity.class);
 156                         AppContext.getMainActivity().startActivity(settings);
 157                         break;
 158                     case R.id.nav_impressum:
 159                         AppContext.getNavigationManager().navigatePage("Impressum");
 160                         break;
 161                     default:
 162                         return false;
 163                 }
 164
 165                 DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 166                 drawer.closeDrawer(GravityCompat.START);
 167                 return true;
 168             }
 169         });
 170     }
 171
 172     private void setupSearchTriggers() {
 173         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 174         ImageView btnCloseSearch = (ImageView) findViewById(R.id.search_clear);
 175         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 176         TextView txtTitle = (TextView) findViewById(R.id.title);
 177
 178         btnOpenSearch.setOnClickListener(new View.OnClickListener() {
 179             @Override
 180             public void onClick(View view) {
 181                 triggerSearchPanel(true);
 182             }
 183         });
 184         edtSearchInput.setOnFocusChangeListener(new View.OnFocusChangeListener() {
 185             @Override
 186             public void onFocusChange(View v, boolean hasFocus) {
 187                 EditText edtSearchInput = (EditText) v;
 188                 if (!hasFocus && edtSearchInput.getText().length() == 0) {
 189                     triggerSearchPanel(false);
 190                 }
 191             }
 192         });
 193         edtSearchInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
 194             @Override
 195             public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 196                 if (actionId == EditorInfo.IME_ACTION_SEARCH) {
 197                     EditText edtSearchInput = (EditText) v;
 198                     triggerSearchAction(edtSearchInput.getText().toString());
 199                     triggerSearchPanel(false);
 200                     return true;
 201                 }
 202                 return false;
 203             }
 204         });
 205         btnCloseSearch.setOnClickListener(new View.OnClickListener() {
 206             @Override
 207             public void onClick(View view) {
 208                 EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 209                 edtSearchInput.setText("");
 210                 triggerSearchPanel(false);
 211             }
 212         });
 213         txtTitle.setOnClickListener(new View.OnClickListener() {
 214             @Override
 215             public void onClick(View view) {
 216                 triggerSearchPanel(true);
 217             }
 218         });
 219
 220     }
 221
 222     private void triggerSearchPanel(boolean show) {
 223         if(bSearchActive == show)
 224             return;
 225         bSearchActive = show;
 226         LinearLayout layTitleContainer = (LinearLayout) findViewById(R.id.title_container);
 227         LinearLayout laySearchContainer = (LinearLayout) findViewById(R.id.search_container);
 228         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 229
 230         InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 231         if(show) {
 232             layTitleContainer.setVisibility(View.GONE);
 233             laySearchContainer.setVisibility(View.VISIBLE);
 234             edtSearchInput.requestFocus();
 235
 236             imm.showSoftInput(edtSearchInput, InputMethodManager.SHOW_IMPLICIT);
 237         } else {
 238             layTitleContainer.setVisibility(View.VISIBLE);
 239             laySearchContainer.setVisibility(View.GONE);
 240
 241             View view = this.getCurrentFocus();
 242             if (view != null) {
 243                 imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 244             }
 245         }
 246     }
 247
 248     private void triggerSearchAction(String query) {
 249         Bundle bundle = new Bundle();
 250         bundle.putString("query", query);
 251
 252         AppContext.getNavigationManager().navigatePage("AppSearch", bundle);
 253     }
 254
 255     @Override
 256     public void onBackPressed() {
 257         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 258         if (drawer.isDrawerOpen(GravityCompat.START)) {
 259             drawer.closeDrawer(GravityCompat.START);
 260         } else if(!AppContext.getNavigationManager().back()) {
 261             super.onBackPressed(); // trigger system action if internal navigation manager returns false for back()
 262         }
 263     }
 264
 265     @Override
 266     public boolean onCreateOptionsMenu(Menu menu) {
 267         // Inflate the menu; this adds items to the action bar if it is present.
 268         getMenuInflater().inflate(R.menu.campus_app, menu);
 269         return true;
 270     }
 271
 272     @Override
 273     public boolean onOptionsItemSelected(MenuItem item) {
 274         // Handle action bar item clicks here. The action bar will
 275         // automatically handle clicks on the Home/Up button, so long
 276         // as you specify a parent activity in AndroidManifest.xml.
 277         int id = item.getItemId();
 278
 279         //noinspection SimplifiableIfStatement
 280         if (id == R.id.action_settings) {
 281             return true;
 282         }
 283
 284         return super.onOptionsItemSelected(item);
 285     }
 286
 287     /* nfc listener related callbacks */
 288     @Override
 289     public void onResume() {
 290         if(AppContext == null)
 291             AppContext = new CampusAppContext(this, R.id.fragment_container);
 292         else
 293             AppContext.setMainActivity(this);
 294
 295         super.onResume();
 296         Log.i("CampusApp", "onResume event");
 297         AppContext.getNfcCardListener().resumeForefrontDispatcher();
 298     }
 299
 300     @Override
 301     public void onPause() {
 302         super.onPause();
 303         Log.i("CampusApp", "Event: onPause");
 304         AppContext.getNfcCardListener().pauseForefrontDispatcher();
 305     }
 306
 307     @Override
 308     public void onNewIntent(Intent intent) {
 309         if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(intent.getAction())) {
 310             AppContext.getNfcCardListener().handleNfcEvent(intent);
 311         }
 312     }
 313
 314 }