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