src/com/owncloud/android/ui/activity/Uploader.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author Bartek Przybylski
   5  *   Copyright (C) 2012  Bartek Przybylski
   6  *   Copyright (C) 2015 ownCloud Inc.
   7  *
   8  *   This program is free software: you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License version 2,
  10  *   as published by the Free Software Foundation.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 package com.owncloud.android.ui.activity;
  23
  24 import java.io.File;
  25 import java.util.ArrayList;
  26 import java.util.HashMap;
  27 import java.util.LinkedList;
  28 import java.util.List;
  29 import java.util.Stack;
  30 import java.util.Vector;
  31
  32 import android.accounts.Account;
  33 import android.accounts.AccountManager;
  34 import android.app.AlertDialog;
  35 import android.app.AlertDialog.Builder;
  36 import android.app.Dialog;
  37 import android.app.ProgressDialog;
  38 import android.content.Context;
  39 import android.content.DialogInterface;
  40 import android.content.DialogInterface.OnCancelListener;
  41 import android.content.DialogInterface.OnClickListener;
  42 import android.content.Intent;
  43 import android.content.SharedPreferences;
  44 import android.content.res.Resources.NotFoundException;
  45 import android.database.Cursor;
  46 import android.net.Uri;
  47 import android.os.Bundle;
  48 import android.os.Parcelable;
  49 import android.preference.PreferenceManager;
  50 import android.provider.MediaStore.Audio;
  51 import android.provider.MediaStore.Images;
  52 import android.provider.MediaStore.Video;
  53 import android.view.View;
  54 import android.widget.AdapterView;
  55 import android.widget.AdapterView.OnItemClickListener;
  56 import android.widget.Button;
  57 import android.widget.EditText;
  58 import android.widget.ListView;
  59 import android.widget.SimpleAdapter;
  60 import android.widget.Toast;
  61
  62 import com.actionbarsherlock.app.ActionBar;
  63 import com.actionbarsherlock.view.MenuItem;
  64 import com.owncloud.android.MainApp;
  65 import com.owncloud.android.R;
  66 import com.owncloud.android.authentication.AccountAuthenticator;
  67 import com.owncloud.android.authentication.PinCheck;
  68 import com.owncloud.android.datamodel.FileDataStorageManager;
  69 import com.owncloud.android.datamodel.OCFile;
  70 import com.owncloud.android.files.services.FileUploader;
  71 import com.owncloud.android.lib.common.operations.RemoteOperation;
  72 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  73 import com.owncloud.android.lib.common.utils.Log_OC;
  74 import com.owncloud.android.operations.CreateFolderOperation;
  75 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  76 import com.owncloud.android.utils.DisplayUtils;
  77 import com.owncloud.android.utils.ErrorMessageAdapter;
  78
  79
  80 /**
  81  * This can be used to upload things to an ownCloud instance.
  82  */
  83 public class Uploader extends FileActivity
  84         implements OnItemClickListener, android.view.View.OnClickListener {
  85
  86     private static final String TAG = Uploader.class.getSimpleName();
  87
  88     private AccountManager mAccountManager;
  89     private Stack<String> mParents;
  90     private ArrayList<Parcelable> mStreamsToUpload;
  91     private boolean mCreateDir;
  92     private String mUploadPath;
  93     private OCFile mFile;
  94     private boolean mAccountSelected;
  95
  96     private final static int DIALOG_NO_ACCOUNT = 0;
  97     private final static int DIALOG_WAITING = 1;
  98     private final static int DIALOG_NO_STREAM = 2;
  99     private final static int DIALOG_MULTIPLE_ACCOUNT = 3;
 100
 101     private final static int REQUEST_CODE_SETUP_ACCOUNT = 0;
 102
 103     private final static String KEY_PARENTS = "PARENTS";
 104     private final static String KEY_FILE = "FILE";
 105     private final static String KEY_ACCOUNT_SELECTED = "ACCOUNT_SELECTED";
 106
 107     @Override
 108     protected void onCreate(Bundle savedInstanceState) {
 109         prepareStreamsToUpload();
 110
 111         if (savedInstanceState == null) {
 112             mParents = new Stack<String>();
 113             mAccountSelected = false;
 114         } else {
 115             mParents = (Stack<String>) savedInstanceState.getSerializable(KEY_PARENTS);
 116             mFile = savedInstanceState.getParcelable(KEY_FILE);
 117             mAccountSelected = savedInstanceState.getBoolean(KEY_ACCOUNT_SELECTED);
 118         }
 119         super.onCreate(savedInstanceState);
 120
 121         // Check Pin entry
 122         if (PinCheck.checkIfPinEntry()){
 123             Intent i = new Intent(MainApp.getAppContext(), PinCodeActivity.class);
 124             i.putExtra(PinCodeActivity.EXTRA_ACTIVITY, "ownCloudUploader");
 125             startActivity(i);
 126         }
 127
 128         ActionBar actionBar = getSupportActionBar();
 129         actionBar.setIcon(DisplayUtils.getSeasonalIconId());
 130
 131     }
 132
 133     @Override
 134     protected void setAccount(Account account, boolean savedAccount) {
 135         if (somethingToUpload()) {
 136             mAccountManager = (AccountManager) getSystemService(Context.ACCOUNT_SERVICE);
 137             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAccountType());
 138             if (accounts.length == 0) {
 139                 Log_OC.i(TAG, "No ownCloud account is available");
 140                 showDialog(DIALOG_NO_ACCOUNT);
 141             } else if (accounts.length > 1 && !mAccountSelected) {
 142                 Log_OC.i(TAG, "More than one ownCloud is available");
 143                 showDialog(DIALOG_MULTIPLE_ACCOUNT);
 144             } else {
 145                 if (!savedAccount) {
 146                     setAccount(accounts[0]);
 147                 }
 148             }
 149
 150         } else {
 151             showDialog(DIALOG_NO_STREAM);
 152         }
 153
 154         super.setAccount(account, savedAccount);
 155     }
 156
 157     @Override
 158     protected void onAccountSet(boolean stateWasRecovered) {
 159         super.onAccountSet(mAccountWasRestored);
 160         initTargetFolder();
 161         populateDirectoryList();
 162     }
 163
 164     @Override
 165     protected void onSaveInstanceState(Bundle outState) {
 166          Log_OC.d(TAG, "onSaveInstanceState() start");
 167         super.onSaveInstanceState(outState);
 168         outState.putSerializable(KEY_PARENTS, mParents);
 169         //outState.putParcelable(KEY_ACCOUNT, mAccount);
 170         outState.putParcelable(KEY_FILE, mFile);
 171         outState.putBoolean(KEY_ACCOUNT_SELECTED, mAccountSelected);
 172
 173         Log_OC.d(TAG, "onSaveInstanceState() end");
 174     }
 175
 176     @Override
 177     protected Dialog onCreateDialog(final int id) {
 178         final AlertDialog.Builder builder = new Builder(this);
 179         switch (id) {
 180         case DIALOG_WAITING:
 181             ProgressDialog pDialog = new ProgressDialog(this);
 182             pDialog.setIndeterminate(false);
 183             pDialog.setCancelable(false);
 184             pDialog.setMessage(getResources().getString(R.string.uploader_info_uploading));
 185             return pDialog;
 186         case DIALOG_NO_ACCOUNT:
 187             builder.setIcon(android.R.drawable.ic_dialog_alert);
 188             builder.setTitle(R.string.uploader_wrn_no_account_title);
 189             builder.setMessage(String.format(
 190                     getString(R.string.uploader_wrn_no_account_text), getString(R.string.app_name)));
 191             builder.setCancelable(false);
 192             builder.setPositiveButton(R.string.uploader_wrn_no_account_setup_btn_text, new OnClickListener() {
 193                 @Override
 194                 public void onClick(DialogInterface dialog, int which) {
 195                     if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.ECLAIR_MR1) {
 196                         // using string value since in API7 this
 197                         // constatn is not defined
 198                         // in API7 < this constatant is defined in
 199                         // Settings.ADD_ACCOUNT_SETTINGS
 200                         // and Settings.EXTRA_AUTHORITIES
 201                         Intent intent = new Intent(android.provider.Settings.ACTION_ADD_ACCOUNT);
 202                         intent.putExtra("authorities", new String[] { MainApp.getAuthTokenType() });
 203                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 204                     } else {
 205                         // since in API7 there is no direct call for
 206                         // account setup, so we need to
 207                         // show our own AccountSetupAcricity, get
 208                         // desired results and setup
 209                         // everything for ourself
 210                         Intent intent = new Intent(getBaseContext(), AccountAuthenticator.class);
 211                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 212                     }
 213                 }
 214             });
 215             builder.setNegativeButton(R.string.uploader_wrn_no_account_quit_btn_text, new OnClickListener() {
 216                 @Override
 217                 public void onClick(DialogInterface dialog, int which) {
 218                     finish();
 219                 }
 220             });
 221             return builder.create();
 222         case DIALOG_MULTIPLE_ACCOUNT:
 223             CharSequence ac[] = new CharSequence[
 224                     mAccountManager.getAccountsByType(MainApp.getAccountType()).length];
 225             for (int i = 0; i < ac.length; ++i) {
 226                 ac[i] = DisplayUtils.convertIdn(
 227                         mAccountManager.getAccountsByType(MainApp.getAccountType())[i].name, false);
 228             }
 229             builder.setTitle(R.string.common_choose_account);
 230             builder.setItems(ac, new OnClickListener() {
 231                 @Override
 232                 public void onClick(DialogInterface dialog, int which) {
 233                     setAccount(mAccountManager.getAccountsByType(MainApp.getAccountType())[which]);
 234                     onAccountSet(mAccountWasRestored);
 235                     dialog.dismiss();
 236                     mAccountSelected = true;
 237                 }
 238             });
 239             builder.setCancelable(true);
 240             builder.setOnCancelListener(new OnCancelListener() {
 241                 @Override
 242                 public void onCancel(DialogInterface dialog) {
 243                     dialog.cancel();
 244                     finish();
 245                 }
 246             });
 247             return builder.create();
 248         case DIALOG_NO_STREAM:
 249             builder.setIcon(android.R.drawable.ic_dialog_alert);
 250             builder.setTitle(R.string.uploader_wrn_no_content_title);
 251             builder.setMessage(R.string.uploader_wrn_no_content_text);
 252             builder.setCancelable(false);
 253             builder.setNegativeButton(R.string.common_cancel, new OnClickListener() {
 254                 @Override
 255                 public void onClick(DialogInterface dialog, int which) {
 256                     finish();
 257                 }
 258             });
 259             return builder.create();
 260         default:
 261             throw new IllegalArgumentException("Unknown dialog id: " + id);
 262         }
 263     }
 264
 265     class a implements OnClickListener {
 266         String mPath;
 267         EditText mDirname;
 268
 269         public a(String path, EditText dirname) {
 270             mPath = path;
 271             mDirname = dirname;
 272         }
 273
 274         @Override
 275         public void onClick(DialogInterface dialog, int which) {
 276             Uploader.this.mUploadPath = mPath + mDirname.getText().toString();
 277             Uploader.this.mCreateDir = true;
 278             uploadFiles();
 279         }
 280     }
 281
 282     @Override
 283     public void onBackPressed() {
 284
 285         if (mParents.size() <= 1) {
 286             super.onBackPressed();
 287             return;
 288         } else {
 289             mParents.pop();
 290             populateDirectoryList();
 291         }
 292     }
 293
 294     @Override
 295     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 296         // click on folder in the list
 297         Log_OC.d(TAG, "on item click");
 298         Vector<OCFile> tmpfiles = getStorageManager().getFolderContent(mFile);
 299         if (tmpfiles.size() <= 0) return;
 300         // filter on dirtype
 301         Vector<OCFile> files = new Vector<OCFile>();
 302         for (OCFile f : tmpfiles)
 303             if (f.isFolder())
 304                 files.add(f);
 305         if (files.size() < position) {
 306             throw new IndexOutOfBoundsException("Incorrect item selected");
 307         }
 308         mParents.push(files.get(position).getFileName());
 309         populateDirectoryList();
 310     }
 311
 312     @Override
 313     public void onClick(View v) {
 314         // click on button
 315         switch (v.getId()) {
 316         case R.id.uploader_choose_folder:
 317             mUploadPath = "";   // first element in mParents is root dir, represented by "";
 318                                 // init mUploadPath with "/" results in a "//" prefix
 319             for (String p : mParents)
 320                 mUploadPath += p + OCFile.PATH_SEPARATOR;
 321             Log_OC.d(TAG, "Uploading file to dir " + mUploadPath);
 322
 323             uploadFiles();
 324
 325             break;
 326
 327         case R.id.uploader_new_folder:
 328             CreateFolderDialogFragment dialog = CreateFolderDialogFragment.newInstance(mFile);
 329             dialog.show(getSupportFragmentManager(), "createdirdialog");
 330             break;
 331
 332
 333         default:
 334             throw new IllegalArgumentException("Wrong element clicked");
 335         }
 336     }
 337
 338     @Override
 339     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 340         super.onActivityResult(requestCode, resultCode, data);
 341         Log_OC.i(TAG, "result received. req: " + requestCode + " res: " + resultCode);
 342         if (requestCode == REQUEST_CODE_SETUP_ACCOUNT) {
 343             dismissDialog(DIALOG_NO_ACCOUNT);
 344             if (resultCode == RESULT_CANCELED) {
 345                 finish();
 346             }
 347             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAuthTokenType());
 348             if (accounts.length == 0) {
 349                 showDialog(DIALOG_NO_ACCOUNT);
 350             } else {
 351                 // there is no need for checking for is there more then one
 352                 // account at this point
 353                 // since account setup can set only one account at time
 354                 setAccount(accounts[0]);
 355                 populateDirectoryList();
 356             }
 357         }
 358     }
 359
 360     private void populateDirectoryList() {
 361         setContentView(R.layout.uploader_layout);
 362
 363         ListView mListView = (ListView) findViewById(android.R.id.list);
 364
 365         String current_dir = mParents.peek();
 366         if(current_dir.equals("")){
 367             getSupportActionBar().setTitle(getString(R.string.default_display_name_for_root_folder));
 368         }
 369         else{
 370             getSupportActionBar().setTitle(current_dir);
 371         }
 372         boolean notRoot = (mParents.size() > 1);
 373         ActionBar actionBar = getSupportActionBar();
 374         actionBar.setDisplayHomeAsUpEnabled(notRoot);
 375         actionBar.setHomeButtonEnabled(notRoot);
 376
 377         String full_path = generatePath(mParents);
 378
 379         Log_OC.d(TAG, "Populating view with content of : " + full_path);
 380
 381         mFile = getStorageManager().getFileByPath(full_path);
 382         if (mFile != null) {
 383             Vector<OCFile> files = getStorageManager().getFolderContent(mFile);
 384             List<HashMap<String, Object>> data = new LinkedList<HashMap<String,Object>>();
 385             for (OCFile f : files) {
 386                 HashMap<String, Object> h = new HashMap<String, Object>();
 387                 if (f.isFolder()) {
 388                     h.put("dirname", f.getFileName());
 389                     data.add(h);
 390                 }
 391             }
 392             SimpleAdapter sa = new SimpleAdapter(this,
 393                                                 data,
 394                                                 R.layout.uploader_list_item_layout,
 395                                                 new String[] {"dirname"},
 396                                                 new int[] {R.id.textView1});
 397
 398             mListView.setAdapter(sa);
 399             Button btnChooseFolder = (Button) findViewById(R.id.uploader_choose_folder);
 400             btnChooseFolder.setOnClickListener(this);
 401
 402             Button btnNewFolder = (Button) findViewById(R.id.uploader_new_folder);
 403             btnNewFolder.setOnClickListener(this);
 404
 405             mListView.setOnItemClickListener(this);
 406         }
 407     }
 408
 409     private String generatePath(Stack<String> dirs) {
 410         String full_path = "";
 411
 412         for (String a : dirs)
 413             full_path += a + "/";
 414         return full_path;
 415     }
 416
 417     private void prepareStreamsToUpload() {
 418         if (getIntent().getAction().equals(Intent.ACTION_SEND)) {
 419             mStreamsToUpload = new ArrayList<Parcelable>();
 420             mStreamsToUpload.add(getIntent().getParcelableExtra(Intent.EXTRA_STREAM));
 421         } else if (getIntent().getAction().equals(Intent.ACTION_SEND_MULTIPLE)) {
 422             mStreamsToUpload = getIntent().getParcelableArrayListExtra(Intent.EXTRA_STREAM);
 423         }
 424     }
 425
 426     private boolean somethingToUpload() {
 427         return (mStreamsToUpload != null && mStreamsToUpload.get(0) != null);
 428     }
 429
 430     public void uploadFiles() {
 431         try {
 432
 433             ArrayList<String> local = new ArrayList<String>();
 434             ArrayList<String> remote = new ArrayList<String>();
 435
 436             // this checks the mimeType
 437             for (Parcelable mStream : mStreamsToUpload) {
 438
 439                 Uri uri = (Uri) mStream;
 440                 if (uri !=null) {
 441                     if (uri.getScheme().equals("content")) {
 442
 443                        String mimeType = getContentResolver().getType(uri);
 444
 445                        if (mimeType.contains("image")) {
 446                            String[] CONTENT_PROJECTION = { Images.Media.DATA,
 447                                    Images.Media.DISPLAY_NAME, Images.Media.MIME_TYPE,
 448                                    Images.Media.SIZE};
 449                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 450                                    null, null);
 451                            c.moveToFirst();
 452                            int index = c.getColumnIndex(Images.Media.DATA);
 453                            String data = c.getString(index);
 454                            local.add(data);
 455                            remote.add(mUploadPath +
 456                                    c.getString(c.getColumnIndex(Images.Media.DISPLAY_NAME)));
 457
 458                        }
 459                        else if (mimeType.contains("video")) {
 460                            String[] CONTENT_PROJECTION = { Video.Media.DATA,
 461                                    Video.Media.DISPLAY_NAME, Video.Media.MIME_TYPE,
 462                                    Video.Media.SIZE, Video.Media.DATE_MODIFIED };
 463                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 464                                    null, null);
 465                            c.moveToFirst();
 466                            int index = c.getColumnIndex(Video.Media.DATA);
 467                            String data = c.getString(index);
 468                            local.add(data);
 469                            remote.add(mUploadPath +
 470                                    c.getString(c.getColumnIndex(Video.Media.DISPLAY_NAME)));
 471
 472                        }
 473                        else if (mimeType.contains("audio")) {
 474                            String[] CONTENT_PROJECTION = { Audio.Media.DATA,
 475                                    Audio.Media.DISPLAY_NAME, Audio.Media.MIME_TYPE,
 476                                    Audio.Media.SIZE };
 477                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 478                                    null, null);
 479                            c.moveToFirst();
 480                            int index = c.getColumnIndex(Audio.Media.DATA);
 481                            String data = c.getString(index);
 482                            local.add(data);
 483                            remote.add(mUploadPath +
 484                                    c.getString(c.getColumnIndex(Audio.Media.DISPLAY_NAME)));
 485
 486                        }
 487                        else {
 488                            String filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
 489                                    "://", "");
 490                            // cut everything whats before mnt. It occurred to me that sometimes
 491                            // apps send their name into the URI
 492                            if (filePath.contains("mnt")) {
 493                               String splitedFilePath[] = filePath.split("/mnt");
 494                               filePath = splitedFilePath[1];
 495                            }
 496                            final File file = new File(filePath);
 497                            local.add(file.getAbsolutePath());
 498                            remote.add(mUploadPath + file.getName());
 499                        }
 500
 501                     } else if (uri.getScheme().equals("file")) {
 502                         String filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
 503                                 "://", "");
 504                         if (filePath.contains("mnt")) {
 505                            String splitedFilePath[] = filePath.split("/mnt");
 506                            filePath = splitedFilePath[1];
 507                         }
 508                         final File file = new File(filePath);
 509                         local.add(file.getAbsolutePath());
 510                         remote.add(mUploadPath + file.getName());
 511                     }
 512                     else {
 513                         throw new SecurityException();
 514                     }
 515                 }
 516                 else {
 517                     throw new SecurityException();
 518                 }
 519
 520             Intent intent = new Intent(getApplicationContext(), FileUploader.class);
 521             intent.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
 522             intent.putExtra(FileUploader.KEY_LOCAL_FILE, local.toArray(new String[local.size()]));
 523             intent.putExtra(FileUploader.KEY_REMOTE_FILE,
 524                     remote.toArray(new String[remote.size()]));
 525             intent.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
 526             startService(intent);
 527
 528             //Save the path to shared preferences
 529             SharedPreferences.Editor appPrefs = PreferenceManager
 530                     .getDefaultSharedPreferences(getApplicationContext()).edit();
 531             appPrefs.putString("last_upload_path", mUploadPath);
 532             appPrefs.apply();
 533
 534             finish();
 535             }
 536
 537         } catch (SecurityException e) {
 538             String message = String.format(getString(R.string.uploader_error_forbidden_content),
 539                     getString(R.string.app_name));
 540             Toast.makeText(this, message, Toast.LENGTH_LONG).show();
 541         }
 542     }
 543
 544     @Override
 545     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 546         super.onRemoteOperationFinish(operation, result);
 547
 548
 549         if (operation instanceof CreateFolderOperation) {
 550             onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
 551         }
 552
 553     }
 554
 555     /**
 556      * Updates the view associated to the activity after the finish of an operation
 557      * trying create a new folder
 558      *
 559      * @param operation     Creation operation performed.
 560      * @param result        Result of the creation.
 561      */
 562     private void onCreateFolderOperationFinish(CreateFolderOperation operation,
 563                                                RemoteOperationResult result) {
 564         if (result.isSuccess()) {
 565             dismissLoadingDialog();
 566             populateDirectoryList();
 567         } else {
 568             dismissLoadingDialog();
 569             try {
 570                 Toast msg = Toast.makeText(this,
 571                         ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
 572                         Toast.LENGTH_LONG);
 573                 msg.show();
 574
 575             } catch (NotFoundException e) {
 576                 Log_OC.e(TAG, "Error while trying to show fail message " , e);
 577             }
 578         }
 579     }
 580
 581
 582     /**
 583      *  Loads the target folder initialize shown to the user.
 584      *
 585      *  The target account has to be chosen before this method is called.
 586      */
 587     private void initTargetFolder() {
 588         if (getStorageManager() == null) {
 589             throw new IllegalStateException("Do not call this method before " +
 590                     "initializing mStorageManager");
 591         }
 592
 593         SharedPreferences appPreferences = PreferenceManager
 594                 .getDefaultSharedPreferences(getApplicationContext());
 595
 596         String last_path = appPreferences.getString("last_upload_path", "");
 597         // "/" equals root-directory
 598         if(last_path.equals("/")) {
 599             mParents.add("");
 600         }
 601         else{
 602             String[] dir_names = last_path.split("/");
 603             for (String dir : dir_names)
 604                 mParents.add(dir);
 605         }
 606         //Make sure that path still exists, if it doesn't pop the stack and try the previous path
 607             while(!getStorageManager().fileExists(generatePath(mParents)) && mParents.size() > 1){
 608                 mParents.pop();
 609             }
 610     }
 611
 612
 613     @Override
 614     public boolean onOptionsItemSelected(MenuItem item) {
 615         boolean retval = true;
 616         switch (item.getItemId()) {
 617         case android.R.id.home: {
 618             if((mParents.size() > 1)) {
 619                 onBackPressed();
 620             }
 621             break;
 622         }
 623         default:
 624             retval = super.onOptionsItemSelected(item);
 625         }
 626         return retval;
 627     }
 628
 629
 630 }