app/src/main/java/net/ktnx/mobileledger/ui/activity/MainActivity.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.content.Intent;
  21 import android.content.pm.PackageInfo;
  22 import android.content.res.ColorStateList;
  23 import android.graphics.Color;
  24 import android.os.AsyncTask;
  25 import android.os.Build;
  26 import android.os.Bundle;
  27 import android.util.Log;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.view.animation.Animation;
  31 import android.view.animation.AnimationUtils;
  32 import android.widget.LinearLayout;
  33 import android.widget.ProgressBar;
  34 import android.widget.TextView;
  35 import android.widget.Toast;
  36
  37 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  38
  39 import net.ktnx.mobileledger.R;
  40 import net.ktnx.mobileledger.async.RefreshDescriptionsTask;
  41 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.LedgerAccount;
  44 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  45 import net.ktnx.mobileledger.ui.account_summary.AccountSummaryFragment;
  46 import net.ktnx.mobileledger.ui.profiles.ProfileDetailFragment;
  47 import net.ktnx.mobileledger.ui.profiles.ProfilesRecyclerViewAdapter;
  48 import net.ktnx.mobileledger.ui.transaction_list.TransactionListFragment;
  49 import net.ktnx.mobileledger.ui.transaction_list.TransactionListViewModel;
  50 import net.ktnx.mobileledger.utils.Colors;
  51 import net.ktnx.mobileledger.utils.MLDB;
  52
  53 import java.lang.ref.WeakReference;
  54 import java.text.DateFormat;
  55 import java.util.Date;
  56 import java.util.Observable;
  57 import java.util.Observer;
  58
  59 import androidx.appcompat.app.ActionBarDrawerToggle;
  60 import androidx.appcompat.widget.Toolbar;
  61 import androidx.core.view.GravityCompat;
  62 import androidx.drawerlayout.widget.DrawerLayout;
  63 import androidx.fragment.app.Fragment;
  64 import androidx.fragment.app.FragmentManager;
  65 import androidx.fragment.app.FragmentPagerAdapter;
  66 import androidx.recyclerview.widget.LinearLayoutManager;
  67 import androidx.recyclerview.widget.RecyclerView;
  68 import androidx.viewpager.widget.ViewPager;
  69
  70 public class MainActivity extends ProfileThemedActivity {
  71     private static final String STATE_CURRENT_PAGE = "current_page";
  72     private static final String BUNDLE_SAVED_STATE = "bundle_savedState";
  73     DrawerLayout drawer;
  74     private LinearLayout profileListContainer;
  75     private View profileListHeadArrow, profileListHeadMore, profileListHeadCancel;
  76     private LinearLayout profileListHeadMoreAndCancel;
  77     private FragmentManager fragmentManager;
  78     private TextView tvLastUpdate;
  79     private RetrieveTransactionsTask retrieveTransactionsTask;
  80     private View bTransactionListCancelDownload;
  81     private ProgressBar progressBar;
  82     private LinearLayout progressLayout;
  83     private SectionsPagerAdapter mSectionsPagerAdapter;
  84     private ViewPager mViewPager;
  85     private FloatingActionButton fab;
  86     private boolean profileModificationEnabled = false;
  87     private boolean profileListExpanded = false;
  88     private ProfilesRecyclerViewAdapter mProfileListAdapter;
  89
  90     @Override
  91     protected void onStart() {
  92         super.onStart();
  93
  94         Data.lastUpdateDate.set(null);
  95         updateLastUpdateTextFromDB();
  96         Date lastUpdate = Data.lastUpdateDate.get();
  97
  98         long now = new Date().getTime();
  99         if ((lastUpdate == null) || (now > (lastUpdate.getTime() + (24 * 3600 * 1000)))) {
 100             if (lastUpdate == null) Log.d("db::", "WEB data never fetched. scheduling a fetch");
 101             else Log.d("db",
 102                     String.format("WEB data last fetched at %1.3f and now is %1.3f. re-fetching",
 103                             lastUpdate.getTime() / 1000f, now / 1000f));
 104
 105             scheduleTransactionListRetrieval();
 106         }
 107     }
 108     @Override
 109     protected void onSaveInstanceState(Bundle outState) {
 110         super.onSaveInstanceState(outState);
 111         outState.putInt(STATE_CURRENT_PAGE, mViewPager.getCurrentItem());
 112     }
 113     @Override
 114     protected void onCreate(Bundle savedInstanceState) {
 115         super.onCreate(savedInstanceState);
 116
 117         setContentView(R.layout.activity_main);
 118
 119         fab = findViewById(R.id.btn_add_transaction);
 120         profileListContainer = findViewById(R.id.nav_profile_list_container);
 121         profileListHeadArrow = findViewById(R.id.nav_profiles_arrow);
 122         profileListHeadMore = findViewById(R.id.nav_profiles_start_edit);
 123         profileListHeadCancel = findViewById(R.id.nav_profiles_cancel_edit);
 124         profileListHeadMoreAndCancel = findViewById(R.id.nav_profile_list_head_buttons);
 125         drawer = findViewById(R.id.drawer_layout);
 126         tvLastUpdate = findViewById(R.id.transactions_last_update);
 127         bTransactionListCancelDownload = findViewById(R.id.transaction_list_cancel_download);
 128         progressBar = findViewById(R.id.transaction_list_progress_bar);
 129         progressLayout = findViewById(R.id.transaction_progress_layout);
 130         fragmentManager = getSupportFragmentManager();
 131         mSectionsPagerAdapter = new SectionsPagerAdapter(fragmentManager);
 132         mViewPager = findViewById(R.id.root_frame);
 133
 134         Bundle extra = getIntent().getBundleExtra(BUNDLE_SAVED_STATE);
 135         if (extra != null && savedInstanceState == null) savedInstanceState = extra;
 136
 137
 138         Toolbar toolbar = findViewById(R.id.toolbar);
 139         setSupportActionBar(toolbar);
 140
 141         Data.profile.addObserver((o, arg) -> {
 142             MobileLedgerProfile profile = Data.profile.get();
 143             runOnUiThread(() -> {
 144                 if (profile == null) setTitle(R.string.app_name);
 145                 else setTitle(profile.getName());
 146                 updateLastUpdateTextFromDB();
 147                 if (profile.isPostingPermitted()) {
 148                     toolbar.setSubtitle(null);
 149                     fab.show();
 150                 }
 151                 else {
 152                     toolbar.setSubtitle(R.string.profile_subitlte_read_only);
 153                     fab.hide();
 154                 }
 155
 156                 int newProfileTheme = profile.getThemeId();
 157                 if (newProfileTheme != Colors.profileThemeId) {
 158                     Log.d("profiles", String.format("profile theme %d → %d", Colors.profileThemeId,
 159                             newProfileTheme));
 160                     profileThemeChanged();
 161                     Colors.profileThemeId = newProfileTheme;
 162                 }
 163             });
 164         });
 165
 166         ActionBarDrawerToggle toggle =
 167                 new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open,
 168                         R.string.navigation_drawer_close);
 169         drawer.addDrawerListener(toggle);
 170         toggle.syncState();
 171
 172         TextView ver = drawer.findViewById(R.id.drawer_version_text);
 173
 174         try {
 175             PackageInfo pi =
 176                     getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0);
 177             ver.setText(pi.versionName);
 178         }
 179         catch (Exception e) {
 180             e.printStackTrace();
 181         }
 182
 183         if (progressBar == null)
 184             throw new RuntimeException("Can't get hold on the transaction value progress bar");
 185         if (progressLayout == null) throw new RuntimeException(
 186                 "Can't get hold on the transaction value progress bar layout");
 187
 188         markDrawerItemCurrent(R.id.nav_account_summary);
 189
 190         mViewPager.setAdapter(mSectionsPagerAdapter);
 191         mViewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
 192             @Override
 193             public void onPageSelected(int position) {
 194                 switch (position) {
 195                     case 0:
 196                         markDrawerItemCurrent(R.id.nav_account_summary);
 197                         break;
 198                     case 1:
 199                         markDrawerItemCurrent(R.id.nav_latest_transactions);
 200                         break;
 201                     default:
 202                         Log.e("MainActivity", String.format("Unexpected page index %d", position));
 203                 }
 204
 205                 super.onPageSelected(position);
 206             }
 207         });
 208
 209         if (savedInstanceState != null) {
 210             int currentPage = savedInstanceState.getInt(STATE_CURRENT_PAGE, -1);
 211             if (currentPage != -1) {
 212                 mViewPager.setCurrentItem(currentPage, false);
 213             }
 214         }
 215
 216         Data.lastUpdateDate.addObserver((o, arg) -> {
 217             Log.d("main", "lastUpdateDate changed");
 218             runOnUiThread(() -> {
 219                 Date date = Data.lastUpdateDate.get();
 220                 if (date == null) {
 221                     tvLastUpdate.setText(R.string.transaction_last_update_never);
 222                 }
 223                 else {
 224                     final String text = DateFormat.getDateTimeInstance().format(date);
 225                     tvLastUpdate.setText(text);
 226                     Log.d("despair", String.format("Date formatted: %s", text));
 227                 }
 228             });
 229         });
 230
 231         findViewById(R.id.btn_no_profiles_add)
 232                 .setOnClickListener(v -> startEditProfileActivity(null));
 233
 234         findViewById(R.id.btn_add_transaction).setOnClickListener(this::fabNewTransactionClicked);
 235
 236         findViewById(R.id.nav_new_profile_button)
 237                 .setOnClickListener(v -> startEditProfileActivity(null));
 238
 239         RecyclerView root = findViewById(R.id.nav_profile_list);
 240         if (root == null)
 241             throw new RuntimeException("Can't get hold on the transaction value view");
 242
 243         mProfileListAdapter = new ProfilesRecyclerViewAdapter();
 244         root.setAdapter(mProfileListAdapter);
 245
 246         mProfileListAdapter.addEditingProfilesObserver(new Observer() {
 247             @Override
 248             public void update(Observable o, Object arg) {
 249                 if (mProfileListAdapter.isEditingProfiles()) {
 250                     profileListHeadArrow.clearAnimation();
 251                     profileListHeadArrow.setVisibility(View.GONE);
 252                     profileListHeadMore.setVisibility(View.GONE);
 253                     profileListHeadCancel.setVisibility(View.VISIBLE);
 254                 }
 255                 else {
 256                     profileListHeadArrow.setRotation(180f);
 257                     profileListHeadArrow.setVisibility(View.VISIBLE);
 258                     profileListHeadCancel.setVisibility(View.GONE);
 259                     profileListHeadMore.setVisibility(View.GONE);
 260                     profileListHeadMore
 261                             .setVisibility(profileListExpanded ? View.VISIBLE : View.GONE);
 262                 }
 263             }
 264         });
 265
 266         LinearLayoutManager llm = new LinearLayoutManager(this);
 267
 268         llm.setOrientation(RecyclerView.VERTICAL);
 269         root.setLayoutManager(llm);
 270
 271         profileListHeadMore.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 272         profileListHeadCancel.setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 273         profileListHeadMoreAndCancel
 274                 .setOnClickListener((v) -> mProfileListAdapter.flipEditingProfiles());
 275
 276         drawer.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
 277             @Override
 278             public void onDrawerClosed(View drawerView) {
 279                 super.onDrawerClosed(drawerView);
 280                 collapseProfileList();
 281             }
 282         });
 283     }
 284     private void profileThemeChanged() {
 285         setupProfileColors();
 286
 287         Bundle bundle = new Bundle();
 288         onSaveInstanceState(bundle);
 289         // restart activity to reflect theme change
 290         finish();
 291         Intent intent = new Intent(this, this.getClass());
 292         intent.putExtra(BUNDLE_SAVED_STATE, bundle);
 293         startActivity(intent);
 294     }
 295     @Override
 296     protected void onResume() {
 297         super.onResume();
 298         setupProfile();
 299     }
 300     public void startEditProfileActivity(MobileLedgerProfile profile) {
 301         Intent intent = new Intent(this, ProfileDetailActivity.class);
 302         Bundle args = new Bundle();
 303         if (profile != null) {
 304             int index = Data.getProfileIndex(profile);
 305             if (index != -1) intent.putExtra(ProfileDetailFragment.ARG_ITEM_ID, index);
 306         }
 307         intent.putExtras(args);
 308         startActivity(intent, args);
 309     }
 310     private void setupProfile() {
 311         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
 312         MobileLedgerProfile profile;
 313
 314         profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
 315
 316         if (Data.profiles.getList().isEmpty()) {
 317             findViewById(R.id.no_profiles_layout).setVisibility(View.VISIBLE);
 318             findViewById(R.id.pager_layout).setVisibility(View.GONE);
 319             return;
 320         }
 321
 322         findViewById(R.id.pager_layout).setVisibility(View.VISIBLE);
 323         findViewById(R.id.no_profiles_layout).setVisibility(View.GONE);
 324
 325         if (profile == null) profile = Data.profiles.get(0);
 326
 327         if (profile == null) throw new AssertionError("profile must have a value");
 328
 329         Data.setCurrentProfile(profile);
 330     }
 331     public void fabNewTransactionClicked(View view) {
 332         Intent intent = new Intent(this, NewTransactionActivity.class);
 333         startActivity(intent);
 334         overridePendingTransition(R.anim.slide_in_right, R.anim.dummy);
 335     }
 336     public void navSettingsClicked(View view) {
 337         Intent intent = new Intent(this, SettingsActivity.class);
 338         startActivity(intent);
 339         drawer.closeDrawers();
 340     }
 341     public void markDrawerItemCurrent(int id) {
 342         TextView item = drawer.findViewById(id);
 343         item.setBackgroundColor(Colors.tableRowDarkBG);
 344
 345         LinearLayout actions = drawer.findViewById(R.id.nav_actions);
 346         for (int i = 0; i < actions.getChildCount(); i++) {
 347             View view = actions.getChildAt(i);
 348             if (view.getId() != id) {
 349                 view.setBackgroundColor(Color.TRANSPARENT);
 350             }
 351         }
 352     }
 353     public void onAccountSummaryClicked(View view) {
 354         drawer.closeDrawers();
 355
 356         showAccountSummaryFragment();
 357     }
 358     private void showAccountSummaryFragment() {
 359         mViewPager.setCurrentItem(0, true);
 360         TransactionListFragment.accountFilter.set(null);
 361 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 362 //        accountSummaryFragment = new AccountSummaryFragment();
 363 //        ft.replace(R.id.root_frame, accountSummaryFragment);
 364 //        ft.commit();
 365 //        currentFragment = accountSummaryFragment;
 366     }
 367     public void onLatestTransactionsClicked(View view) {
 368         drawer.closeDrawers();
 369
 370         showTransactionsFragment(null);
 371     }
 372     private void resetFragmentBackStack() {
 373 //        fragmentManager.popBackStack(0, FragmentManager.POP_BACK_STACK_INCLUSIVE);
 374     }
 375     private void showTransactionsFragment(LedgerAccount account) {
 376         if (account != null) TransactionListFragment.accountFilter.set(account.getName());
 377         mViewPager.setCurrentItem(1, true);
 378 //        FragmentTransaction ft = fragmentManager.beginTransaction();
 379 //        if (transactionListFragment == null) {
 380 //            Log.d("flow", "MainActivity creating TransactionListFragment");
 381 //            transactionListFragment = new TransactionListFragment();
 382 //        }
 383 //        Bundle bundle = new Bundle();
 384 //        if (account != null) {
 385 //            bundle.putString(TransactionListFragment.BUNDLE_KEY_FILTER_ACCOUNT_NAME,
 386 //                    account.getName());
 387 //        }
 388 //        transactionListFragment.setArguments(bundle);
 389 //        ft.replace(R.id.root_frame, transactionListFragment);
 390 //        if (account != null)
 391 //            ft.addToBackStack(getResources().getString(R.string.title_activity_transaction_list));
 392 //        ft.commit();
 393 //
 394 //        currentFragment = transactionListFragment;
 395     }
 396     public void showAccountTransactions(LedgerAccount account) {
 397         showTransactionsFragment(account);
 398     }
 399     @Override
 400     public void onBackPressed() {
 401         DrawerLayout drawer = findViewById(R.id.drawer_layout);
 402         if (drawer.isDrawerOpen(GravityCompat.START)) {
 403             drawer.closeDrawer(GravityCompat.START);
 404         }
 405         else {
 406             Log.d("fragments",
 407                     String.format("manager stack: %d", fragmentManager.getBackStackEntryCount()));
 408
 409             super.onBackPressed();
 410         }
 411     }
 412     public void updateLastUpdateTextFromDB() {
 413         {
 414             final MobileLedgerProfile profile = Data.profile.get();
 415             long last_update =
 416                     (profile != null) ? profile.getLongOption(MLDB.OPT_LAST_SCRAPE, 0L) : 0;
 417
 418             Log.d("transactions", String.format("Last update = %d", last_update));
 419             if (last_update == 0) {
 420                 Data.lastUpdateDate.set(null);
 421             }
 422             else {
 423                 Data.lastUpdateDate.set(new Date(last_update));
 424             }
 425         }
 426     }
 427     public void scheduleTransactionListRetrieval() {
 428         if (Data.profile.get() == null) return;
 429
 430         retrieveTransactionsTask = new RetrieveTransactionsTask(new WeakReference<>(this));
 431
 432         retrieveTransactionsTask.execute();
 433     }
 434     public void onStopTransactionRefreshClick(View view) {
 435         Log.d("interactive", "Cancelling transactions refresh");
 436         if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
 437         bTransactionListCancelDownload.setEnabled(false);
 438     }
 439     public void onRetrieveDone(String error) {
 440         progressLayout.setVisibility(View.GONE);
 441
 442         if (error == null) {
 443             updateLastUpdateTextFromDB();
 444
 445             new RefreshDescriptionsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
 446             TransactionListViewModel.scheduleTransactionListReload();
 447         }
 448         else Toast.makeText(this, error, Toast.LENGTH_LONG).show();
 449     }
 450     public void onRetrieveStart() {
 451         bTransactionListCancelDownload.setEnabled(true);
 452         progressBar.setIndeterminateTintList(ColorStateList.valueOf(Colors.primary));
 453         progressBar.setProgressTintList(ColorStateList.valueOf(Colors.primary));
 454         progressBar.setIndeterminate(true);
 455         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) progressBar.setProgress(0, false);
 456         else progressBar.setProgress(0);
 457         progressLayout.setVisibility(View.VISIBLE);
 458     }
 459     public void onRetrieveProgress(RetrieveTransactionsTask.Progress progress) {
 460         if ((progress.getTotal() == RetrieveTransactionsTask.Progress.INDETERMINATE) ||
 461             (progress.getTotal() == 0))
 462         {
 463             progressBar.setIndeterminate(true);
 464         }
 465         else {
 466             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 467                 progressBar.setMin(0);
 468             }
 469             progressBar.setMax(progress.getTotal());
 470             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 471                 progressBar.setProgress(progress.getProgress(), true);
 472             }
 473             else progressBar.setProgress(progress.getProgress());
 474             progressBar.setIndeterminate(false);
 475         }
 476     }
 477     public void fabShouldShow() {
 478         MobileLedgerProfile profile = Data.profile.get();
 479         if ((profile != null) && profile.isPostingPermitted()) fab.show();
 480     }
 481     public void navProfilesHeadClicked(View view) {
 482         if (profileListExpanded) {
 483             collapseProfileList();
 484         }
 485         else {
 486             expandProfileList();
 487         }
 488     }
 489     private void expandProfileList() {
 490         profileListExpanded = true;
 491
 492
 493         profileListContainer.setVisibility(View.VISIBLE);
 494         profileListContainer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_down));
 495         profileListHeadArrow.startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180));
 496         profileListHeadMore.setVisibility(View.VISIBLE);
 497         profileListHeadMore.startAnimation(AnimationUtils.loadAnimation(this, R.anim.fade_in));
 498         findViewById(R.id.nav_profile_list).setMinimumHeight(
 499                 (int) (getResources().getDimension(R.dimen.thumb_row_height) *
 500                        Data.profiles.size()));
 501     }
 502     private void collapseProfileList() {
 503         profileListExpanded = false;
 504
 505         final Animation animation = AnimationUtils.loadAnimation(this, R.anim.slide_up);
 506         animation.setAnimationListener(new Animation.AnimationListener() {
 507             @Override
 508             public void onAnimationStart(Animation animation) {
 509
 510             }
 511             @Override
 512             public void onAnimationEnd(Animation animation) {
 513                 profileListContainer.setVisibility(View.GONE);
 514             }
 515             @Override
 516             public void onAnimationRepeat(Animation animation) {
 517
 518             }
 519         });
 520         mProfileListAdapter.stopEditingProfiles();
 521
 522         profileListContainer.startAnimation(animation);
 523         profileListHeadArrow.setRotation(0f);
 524         profileListHeadArrow
 525                 .startAnimation(AnimationUtils.loadAnimation(this, R.anim.rotate_180_back));
 526         profileListHeadMore.setVisibility(View.GONE);
 527     }
 528     public void onProfileRowClicked(View v) {
 529         Data.setCurrentProfile((MobileLedgerProfile) v.getTag());
 530     }
 531     public void enableProfileModifications() {
 532         profileModificationEnabled = true;
 533         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 534         for (int i = 0; i < profileList.getChildCount(); i++) {
 535             View aRow = profileList.getChildAt(i);
 536             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.VISIBLE);
 537             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.VISIBLE);
 538         }
 539         // FIXME enable rearranging
 540
 541     }
 542     public void disableProfileModifications() {
 543         profileModificationEnabled = false;
 544         ViewGroup profileList = findViewById(R.id.nav_profile_list);
 545         for (int i = 0; i < profileList.getChildCount(); i++) {
 546             View aRow = profileList.getChildAt(i);
 547             aRow.findViewById(R.id.profile_list_edit_button).setVisibility(View.GONE);
 548             aRow.findViewById(R.id.profile_list_rearrange_handle).setVisibility(View.INVISIBLE);
 549         }
 550         // FIXME disable rearranging
 551
 552     }
 553
 554     public class SectionsPagerAdapter extends FragmentPagerAdapter {
 555
 556         public SectionsPagerAdapter(FragmentManager fm) {
 557             super(fm);
 558         }
 559
 560         @Override
 561         public Fragment getItem(int position) {
 562             Log.d("main", String.format("Switching to fragment %d", position));
 563             switch (position) {
 564                 case 0:
 565                     return new AccountSummaryFragment();
 566                 case 1:
 567                     return new TransactionListFragment();
 568                 default:
 569                     throw new IllegalStateException(
 570                             String.format("Unexpected fragment index: " + "%d", position));
 571             }
 572         }
 573
 574         @Override
 575         public int getCount() {
 576             return 2;
 577         }
 578     }
 579
 580 }