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             if(((new Date()).getTime()/1000) - lastrun < 30) {
  67                 instantRestore = true;
  68
  69                 AppContext.setTitle(savedInstanceState.getString("activetitle"));
  70
  71             }
  72
  73
  74             Bundle contextVars = savedInstanceState.getBundle("savedContextVariables");
  75             if(contextVars != null) {
  76                 Bundle contextVariables = AppContext.getContextVariables();
  77                 contextVariables.putAll(contextVars);
  78             }
  79         }
  80
  81         prepareMainUi();
  82         if(instantRestore) // orientation change
  83             loadMainUi();
  84         else
  85             // don't add navigation to SlashScreen, or even from SplashScreen to Dashboard to the history log!
  86             // it would be very strange to return to the SplashScreen or an "empty" page on return ;)
  87             AppContext.getNavigationManager().navigatePage("SplashScreen", null, false);
  88
  89     }
  90
  91     @Override
  92     public void onSaveInstanceState(Bundle savedInstanceState) {
  93         Log.i("CampusApp", "Event: onSaveInstanceState");
  94         // Save instance state during "restarts" due to orientation changes.
  95         // We don't want to see the splash screen everytime the orientation changes ;)
  96         savedInstanceState.putLong("lastrun", (new Date()).getTime() / 1000);
  97         savedInstanceState.putString("activepage", AppContext.getNavigationManager().getCurrentPageName());
  98         TextView titleView = (TextView) findViewById(R.id.title);
  99         savedInstanceState.putString("activetitle", titleView.getText().toString());
 100
 101         Bundle contextVariables = AppContext.getContextVariables();
 102         savedInstanceState.putBundle("savedContextVariables", contextVariables);
 103
 104         // Always call the superclass so it can save the view hierarchy state
 105         super.onSaveInstanceState(savedInstanceState);
 106     }
 107
 108     public void prepareMainUi() {
 109         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 110         btnOpenSearch.setVisibility(View.GONE);
 111     }
 112
 113     public void loadMainUi() {
 114         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 115
 116         btnOpenSearch.setVisibility(View.VISIBLE);
 117         setupActionBar();
 118         setupSearchTriggers();
 119
 120         AppContext.getNfcCardListener().startNfcListener();
 121     }
 122
 123     private void setupActionBar() {
 124         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
 125         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 126         ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
 127         drawer.setDrawerListener(toggle);
 128         toggle.syncState();
 129
 130         NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
 131         navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
 132             @SuppressWarnings("StatementWithEmptyBody")
 133             @Override
 134             public boolean onNavigationItemSelected(MenuItem item) {
 135                 // Handle navigation view item clicks here.
 136                 int id = item.getItemId();
 137
 138                 switch (id) { // Navigation Items from res/menu/activity_campus_app_drawer.xml
 139                     case R.id.nav_dashboard:
 140                         AppContext.getNavigationManager().navigatePage("Dashboard");
 141                         break;
 142                     case R.id.nav_vorlesungsplan:
 143                         AppContext.getNavigationManager().navigatePage("Vorlesungsplan");
 144                         break;
 145                     case R.id.nav_mensa:
 146                         AppContext.getNavigationManager().navigatePage("Mensa");
 147                         break;
 148                     case R.id.nav_news:
 149                         AppContext.getNavigationManager().navigatePage("News");
 150                         break;
 151                     case R.id.nav_settings:
 152                         Intent settings = new Intent(AppContext.getMainActivity(), SettingsActivity.class);
 153                         AppContext.getMainActivity().startActivity(settings);
 154                         break;
 155                     case R.id.nav_impressum:
 156                         AppContext.getNavigationManager().navigatePage("Impressum");
 157                         break;
 158                     default:
 159                         return false;
 160                 }
 161
 162                 DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 163                 drawer.closeDrawer(GravityCompat.START);
 164                 return true;
 165             }
 166         });
 167     }
 168
 169     private void setupSearchTriggers() {
 170         ImageView btnOpenSearch = (ImageView) findViewById(R.id.search_button);
 171         ImageView btnCloseSearch = (ImageView) findViewById(R.id.search_clear);
 172         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 173         TextView txtTitle = (TextView) findViewById(R.id.title);
 174
 175         btnOpenSearch.setOnClickListener(new View.OnClickListener() {
 176             @Override
 177             public void onClick(View view) {
 178                 triggerSearchPanel(true);
 179             }
 180         });
 181         edtSearchInput.setOnFocusChangeListener(new View.OnFocusChangeListener() {
 182             @Override
 183             public void onFocusChange(View v, boolean hasFocus) {
 184                 EditText edtSearchInput = (EditText) v;
 185                 if (!hasFocus && edtSearchInput.getText().length() == 0) {
 186                     triggerSearchPanel(false);
 187                 }
 188             }
 189         });
 190         edtSearchInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
 191             @Override
 192             public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 193                 if (actionId == EditorInfo.IME_ACTION_SEARCH) {
 194                     EditText edtSearchInput = (EditText) v;
 195                     triggerSearchAction(edtSearchInput.getText().toString());
 196                     triggerSearchPanel(false);
 197                     return true;
 198                 }
 199                 return false;
 200             }
 201         });
 202         btnCloseSearch.setOnClickListener(new View.OnClickListener() {
 203             @Override
 204             public void onClick(View view) {
 205                 EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 206                 edtSearchInput.setText("");
 207                 triggerSearchPanel(false);
 208             }
 209         });
 210         txtTitle.setOnClickListener(new View.OnClickListener() {
 211             @Override
 212             public void onClick(View view) {
 213                 triggerSearchPanel(true);
 214             }
 215         });
 216
 217     }
 218
 219     private void triggerSearchPanel(boolean show) {
 220         if(bSearchActive == show)
 221             return;
 222         bSearchActive = show;
 223         LinearLayout layTitleContainer = (LinearLayout) findViewById(R.id.title_container);
 224         LinearLayout laySearchContainer = (LinearLayout) findViewById(R.id.search_container);
 225         EditText edtSearchInput = (EditText) findViewById(R.id.search_input);
 226
 227         InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 228         if(show) {
 229             layTitleContainer.setVisibility(View.GONE);
 230             laySearchContainer.setVisibility(View.VISIBLE);
 231             edtSearchInput.requestFocus();
 232
 233             imm.showSoftInput(edtSearchInput, InputMethodManager.SHOW_IMPLICIT);
 234         } else {
 235             layTitleContainer.setVisibility(View.VISIBLE);
 236             laySearchContainer.setVisibility(View.GONE);
 237
 238             View view = this.getCurrentFocus();
 239             if (view != null) {
 240                 imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
 241             }
 242         }
 243     }
 244
 245     private void triggerSearchAction(String query) {
 246         Bundle bundle = new Bundle();
 247         bundle.putString("query", query);
 248
 249         AppContext.getNavigationManager().navigatePage("AppSearch", bundle);
 250     }
 251
 252     @Override
 253     public void onBackPressed() {
 254         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
 255         if (drawer.isDrawerOpen(GravityCompat.START)) {
 256             drawer.closeDrawer(GravityCompat.START);
 257         } else if(!AppContext.getNavigationManager().back()) {
 258             super.onBackPressed(); // trigger system action if internal navigation manager returns false for back()
 259         }
 260     }
 261
 262     @Override
 263     public boolean onCreateOptionsMenu(Menu menu) {
 264         // Inflate the menu; this adds items to the action bar if it is present.
 265         getMenuInflater().inflate(R.menu.campus_app, menu);
 266         return true;
 267     }
 268
 269     @Override
 270     public boolean onOptionsItemSelected(MenuItem item) {
 271         // Handle action bar item clicks here. The action bar will
 272         // automatically handle clicks on the Home/Up button, so long
 273         // as you specify a parent activity in AndroidManifest.xml.
 274         int id = item.getItemId();
 275
 276         //noinspection SimplifiableIfStatement
 277         if (id == R.id.action_settings) {
 278             return true;
 279         }
 280
 281         return super.onOptionsItemSelected(item);
 282     }
 283
 284     /* nfc listener related callbacks */
 285     @Override
 286     public void onResume() {
 287         super.onResume();
 288         Log.i("CampusApp", "onResume event");
 289         AppContext.getNfcCardListener().resumeForefrontDispatcher();
 290     }
 291
 292     @Override
 293     public void onPause() {
 294         super.onPause();
 295         Log.i("CampusApp", "Event: onPause");
 296         AppContext.getNfcCardListener().pauseForefrontDispatcher();
 297     }
 298
 299     @Override
 300     public void onNewIntent(Intent intent) {
 301         if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(intent.getAction())) {
 302             AppContext.getNfcCardListener().handleNfcEvent(intent);
 303         }
 304     }
 305
 306 }