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.io.FileDescriptor;
  26 import java.io.FileInputStream;
  27 import java.io.FileNotFoundException;
  28 import java.io.FileOutputStream;
  29 import java.io.IOException;
  30 import java.io.InputStream;
  31 import java.util.ArrayList;
  32 import java.util.HashMap;
  33 import java.util.LinkedList;
  34 import java.util.List;
  35 import java.util.Stack;
  36 import java.util.Vector;
  37 import java.util.concurrent.ExecutionException;
  38
  39 import android.accounts.Account;
  40 import android.accounts.AccountManager;
  41 import android.app.AlertDialog;
  42 import android.app.AlertDialog.Builder;
  43 import android.app.Dialog;
  44 import android.app.ProgressDialog;
  45 import android.content.Context;
  46 import android.content.DialogInterface;
  47 import android.content.DialogInterface.OnCancelListener;
  48 import android.content.DialogInterface.OnClickListener;
  49 import android.content.Intent;
  50 import android.content.SharedPreferences;
  51 import android.content.res.Resources.NotFoundException;
  52 import android.database.Cursor;
  53 import android.net.Uri;
  54 import android.os.Bundle;
  55 import android.os.ParcelFileDescriptor;
  56 import android.os.Parcelable;
  57 import android.preference.PreferenceManager;
  58 import android.provider.MediaStore;
  59 import android.provider.MediaStore.Audio;
  60 import android.provider.MediaStore.Images;
  61 import android.provider.MediaStore.Video;
  62 import android.view.View;
  63 import android.widget.AdapterView;
  64 import android.widget.AdapterView.OnItemClickListener;
  65 import android.widget.Button;
  66 import android.widget.EditText;
  67 import android.widget.ListView;
  68 import android.widget.SimpleAdapter;
  69 import android.widget.Toast;
  70
  71 import com.actionbarsherlock.app.ActionBar;
  72 import com.actionbarsherlock.view.MenuItem;
  73 import com.owncloud.android.MainApp;
  74 import com.owncloud.android.R;
  75 import com.owncloud.android.authentication.AccountAuthenticator;
  76 import com.owncloud.android.datamodel.OCFile;
  77 import com.owncloud.android.files.services.FileUploader;
  78 import com.owncloud.android.lib.common.operations.RemoteOperation;
  79 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  80 import com.owncloud.android.lib.common.utils.Log_OC;
  81 import com.owncloud.android.operations.CreateFolderOperation;
  82 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  83 import com.owncloud.android.utils.CopyTmpFileAsyncTask;
  84 import com.owncloud.android.utils.DisplayUtils;
  85 import com.owncloud.android.utils.ErrorMessageAdapter;
  86 import com.owncloud.android.utils.FileStorageUtils;
  87 import com.owncloud.android.utils.UriUtils;
  88
  89
  90 /**
  91  * This can be used to upload things to an ownCloud instance.
  92  */
  93 public class Uploader extends FileActivity
  94         implements OnItemClickListener, android.view.View.OnClickListener,
  95         CopyTmpFileAsyncTask.OnCopyTmpFileTaskListener {
  96
  97     private static final String TAG = Uploader.class.getSimpleName();
  98
  99     private AccountManager mAccountManager;
 100     private Stack<String> mParents;
 101     private ArrayList<Parcelable> mStreamsToUpload;
 102     private boolean mCreateDir;
 103     private String mUploadPath;
 104     private OCFile mFile;
 105     private boolean mAccountSelected;
 106
 107     private final static int DIALOG_NO_ACCOUNT = 0;
 108     private final static int DIALOG_WAITING = 1;
 109     private final static int DIALOG_NO_STREAM = 2;
 110     private final static int DIALOG_MULTIPLE_ACCOUNT = 3;
 111
 112     private final static int REQUEST_CODE_SETUP_ACCOUNT = 0;
 113
 114     private final static String KEY_PARENTS = "PARENTS";
 115     private final static String KEY_FILE = "FILE";
 116     private final static String KEY_ACCOUNT_SELECTED = "ACCOUNT_SELECTED";
 117
 118     @Override
 119     protected void onCreate(Bundle savedInstanceState) {
 120         prepareStreamsToUpload();
 121
 122         if (savedInstanceState == null) {
 123             mParents = new Stack<String>();
 124             mAccountSelected = false;
 125         } else {
 126             mParents = (Stack<String>) savedInstanceState.getSerializable(KEY_PARENTS);
 127             mFile = savedInstanceState.getParcelable(KEY_FILE);
 128             mAccountSelected = savedInstanceState.getBoolean(KEY_ACCOUNT_SELECTED);
 129         }
 130         super.onCreate(savedInstanceState);
 131
 132         ActionBar actionBar = getSupportActionBar();
 133         actionBar.setIcon(DisplayUtils.getSeasonalIconId());
 134
 135     }
 136
 137     @Override
 138     protected void setAccount(Account account, boolean savedAccount) {
 139         if (somethingToUpload()) {
 140             mAccountManager = (AccountManager) getSystemService(Context.ACCOUNT_SERVICE);
 141             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAccountType());
 142             if (accounts.length == 0) {
 143                 Log_OC.i(TAG, "No ownCloud account is available");
 144                 showDialog(DIALOG_NO_ACCOUNT);
 145             } else if (accounts.length > 1 && !mAccountSelected) {
 146                 Log_OC.i(TAG, "More than one ownCloud is available");
 147                 showDialog(DIALOG_MULTIPLE_ACCOUNT);
 148             } else {
 149                 if (!savedAccount) {
 150                     setAccount(accounts[0]);
 151                 }
 152             }
 153
 154         } else {
 155             showDialog(DIALOG_NO_STREAM);
 156         }
 157
 158         super.setAccount(account, savedAccount);
 159     }
 160
 161     @Override
 162     protected void onAccountSet(boolean stateWasRecovered) {
 163         super.onAccountSet(mAccountWasRestored);
 164         initTargetFolder();
 165         populateDirectoryList();
 166     }
 167
 168     @Override
 169     protected void onSaveInstanceState(Bundle outState) {
 170          Log_OC.d(TAG, "onSaveInstanceState() start");
 171         super.onSaveInstanceState(outState);
 172         outState.putSerializable(KEY_PARENTS, mParents);
 173         //outState.putParcelable(KEY_ACCOUNT, mAccount);
 174         outState.putParcelable(KEY_FILE, mFile);
 175         outState.putBoolean(KEY_ACCOUNT_SELECTED, mAccountSelected);
 176
 177         Log_OC.d(TAG, "onSaveInstanceState() end");
 178     }
 179
 180     @Override
 181     protected Dialog onCreateDialog(final int id) {
 182         final AlertDialog.Builder builder = new Builder(this);
 183         switch (id) {
 184         case DIALOG_WAITING:
 185             ProgressDialog pDialog = new ProgressDialog(this);
 186             pDialog.setIndeterminate(false);
 187             pDialog.setCancelable(false);
 188             pDialog.setMessage(getResources().getString(R.string.uploader_info_uploading));
 189             return pDialog;
 190         case DIALOG_NO_ACCOUNT:
 191             builder.setIcon(android.R.drawable.ic_dialog_alert);
 192             builder.setTitle(R.string.uploader_wrn_no_account_title);
 193             builder.setMessage(String.format(
 194                     getString(R.string.uploader_wrn_no_account_text), getString(R.string.app_name)));
 195             builder.setCancelable(false);
 196             builder.setPositiveButton(R.string.uploader_wrn_no_account_setup_btn_text, new OnClickListener() {
 197                 @Override
 198                 public void onClick(DialogInterface dialog, int which) {
 199                     if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.ECLAIR_MR1) {
 200                         // using string value since in API7 this
 201                         // constatn is not defined
 202                         // in API7 < this constatant is defined in
 203                         // Settings.ADD_ACCOUNT_SETTINGS
 204                         // and Settings.EXTRA_AUTHORITIES
 205                         Intent intent = new Intent(android.provider.Settings.ACTION_ADD_ACCOUNT);
 206                         intent.putExtra("authorities", new String[] { MainApp.getAuthTokenType() });
 207                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 208                     } else {
 209                         // since in API7 there is no direct call for
 210                         // account setup, so we need to
 211                         // show our own AccountSetupAcricity, get
 212                         // desired results and setup
 213                         // everything for ourself
 214                         Intent intent = new Intent(getBaseContext(), AccountAuthenticator.class);
 215                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 216                     }
 217                 }
 218             });
 219             builder.setNegativeButton(R.string.uploader_wrn_no_account_quit_btn_text, new OnClickListener() {
 220                 @Override
 221                 public void onClick(DialogInterface dialog, int which) {
 222                     finish();
 223                 }
 224             });
 225             return builder.create();
 226         case DIALOG_MULTIPLE_ACCOUNT:
 227             CharSequence ac[] = new CharSequence[
 228                     mAccountManager.getAccountsByType(MainApp.getAccountType()).length];
 229             for (int i = 0; i < ac.length; ++i) {
 230                 ac[i] = DisplayUtils.convertIdn(
 231                         mAccountManager.getAccountsByType(MainApp.getAccountType())[i].name, false);
 232             }
 233             builder.setTitle(R.string.common_choose_account);
 234             builder.setItems(ac, new OnClickListener() {
 235                 @Override
 236                 public void onClick(DialogInterface dialog, int which) {
 237                     setAccount(mAccountManager.getAccountsByType(MainApp.getAccountType())[which]);
 238                     onAccountSet(mAccountWasRestored);
 239                     dialog.dismiss();
 240                     mAccountSelected = true;
 241                 }
 242             });
 243             builder.setCancelable(true);
 244             builder.setOnCancelListener(new OnCancelListener() {
 245                 @Override
 246                 public void onCancel(DialogInterface dialog) {
 247                     dialog.cancel();
 248                     finish();
 249                 }
 250             });
 251             return builder.create();
 252         case DIALOG_NO_STREAM:
 253             builder.setIcon(android.R.drawable.ic_dialog_alert);
 254             builder.setTitle(R.string.uploader_wrn_no_content_title);
 255             builder.setMessage(R.string.uploader_wrn_no_content_text);
 256             builder.setCancelable(false);
 257             builder.setNegativeButton(R.string.common_cancel, new OnClickListener() {
 258                 @Override
 259                 public void onClick(DialogInterface dialog, int which) {
 260                     finish();
 261                 }
 262             });
 263             return builder.create();
 264         default:
 265             throw new IllegalArgumentException("Unknown dialog id: " + id);
 266         }
 267     }
 268
 269     class a implements OnClickListener {
 270         String mPath;
 271         EditText mDirname;
 272
 273         public a(String path, EditText dirname) {
 274             mPath = path;
 275             mDirname = dirname;
 276         }
 277
 278         @Override
 279         public void onClick(DialogInterface dialog, int which) {
 280             Uploader.this.mUploadPath = mPath + mDirname.getText().toString();
 281             Uploader.this.mCreateDir = true;
 282             uploadFiles();
 283         }
 284     }
 285
 286     @Override
 287     public void onBackPressed() {
 288
 289         if (mParents.size() <= 1) {
 290             super.onBackPressed();
 291             return;
 292         } else {
 293             mParents.pop();
 294             populateDirectoryList();
 295         }
 296     }
 297
 298     @Override
 299     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 300         // click on folder in the list
 301         Log_OC.d(TAG, "on item click");
 302         Vector<OCFile> tmpfiles = getStorageManager().getFolderContent(mFile);
 303         if (tmpfiles.size() <= 0) return;
 304         // filter on dirtype
 305         Vector<OCFile> files = new Vector<OCFile>();
 306         for (OCFile f : tmpfiles)
 307             if (f.isFolder())
 308                 files.add(f);
 309         if (files.size() < position) {
 310             throw new IndexOutOfBoundsException("Incorrect item selected");
 311         }
 312         mParents.push(files.get(position).getFileName());
 313         populateDirectoryList();
 314     }
 315
 316     @Override
 317     public void onClick(View v) {
 318         // click on button
 319         switch (v.getId()) {
 320         case R.id.uploader_choose_folder:
 321             mUploadPath = "";   // first element in mParents is root dir, represented by "";
 322                                 // init mUploadPath with "/" results in a "//" prefix
 323             for (String p : mParents)
 324                 mUploadPath += p + OCFile.PATH_SEPARATOR;
 325             Log_OC.d(TAG, "Uploading file to dir " + mUploadPath);
 326
 327             uploadFiles();
 328
 329             break;
 330
 331         case R.id.uploader_new_folder:
 332             CreateFolderDialogFragment dialog = CreateFolderDialogFragment.newInstance(mFile);
 333             dialog.show(getSupportFragmentManager(), "createdirdialog");
 334             break;
 335
 336
 337         default:
 338             throw new IllegalArgumentException("Wrong element clicked");
 339         }
 340     }
 341
 342     @Override
 343     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 344         super.onActivityResult(requestCode, resultCode, data);
 345         Log_OC.i(TAG, "result received. req: " + requestCode + " res: " + resultCode);
 346         if (requestCode == REQUEST_CODE_SETUP_ACCOUNT) {
 347             dismissDialog(DIALOG_NO_ACCOUNT);
 348             if (resultCode == RESULT_CANCELED) {
 349                 finish();
 350             }
 351             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAuthTokenType());
 352             if (accounts.length == 0) {
 353                 showDialog(DIALOG_NO_ACCOUNT);
 354             } else {
 355                 // there is no need for checking for is there more then one
 356                 // account at this point
 357                 // since account setup can set only one account at time
 358                 setAccount(accounts[0]);
 359                 populateDirectoryList();
 360             }
 361         }
 362     }
 363
 364     private void populateDirectoryList() {
 365         setContentView(R.layout.uploader_layout);
 366
 367         ListView mListView = (ListView) findViewById(android.R.id.list);
 368
 369         String current_dir = mParents.peek();
 370         if(current_dir.equals("")){
 371             getSupportActionBar().setTitle(getString(R.string.default_display_name_for_root_folder));
 372         }
 373         else{
 374             getSupportActionBar().setTitle(current_dir);
 375         }
 376         boolean notRoot = (mParents.size() > 1);
 377         ActionBar actionBar = getSupportActionBar();
 378         actionBar.setDisplayHomeAsUpEnabled(notRoot);
 379         actionBar.setHomeButtonEnabled(notRoot);
 380
 381         String full_path = generatePath(mParents);
 382
 383         Log_OC.d(TAG, "Populating view with content of : " + full_path);
 384
 385         mFile = getStorageManager().getFileByPath(full_path);
 386         if (mFile != null) {
 387             Vector<OCFile> files = getStorageManager().getFolderContent(mFile);
 388             List<HashMap<String, Object>> data = new LinkedList<HashMap<String,Object>>();
 389             for (OCFile f : files) {
 390                 HashMap<String, Object> h = new HashMap<String, Object>();
 391                 if (f.isFolder()) {
 392                     h.put("dirname", f.getFileName());
 393                     data.add(h);
 394                 }
 395             }
 396             SimpleAdapter sa = new SimpleAdapter(this,
 397                                                 data,
 398                                                 R.layout.uploader_list_item_layout,
 399                                                 new String[] {"dirname"},
 400                                                 new int[] {R.id.textView1});
 401
 402             mListView.setAdapter(sa);
 403             Button btnChooseFolder = (Button) findViewById(R.id.uploader_choose_folder);
 404             btnChooseFolder.setOnClickListener(this);
 405
 406             Button btnNewFolder = (Button) findViewById(R.id.uploader_new_folder);
 407             btnNewFolder.setOnClickListener(this);
 408
 409             mListView.setOnItemClickListener(this);
 410         }
 411     }
 412
 413     private String generatePath(Stack<String> dirs) {
 414         String full_path = "";
 415
 416         for (String a : dirs)
 417             full_path += a + "/";
 418         return full_path;
 419     }
 420
 421     private void prepareStreamsToUpload() {
 422         if (getIntent().getAction().equals(Intent.ACTION_SEND)) {
 423             mStreamsToUpload = new ArrayList<Parcelable>();
 424             mStreamsToUpload.add(getIntent().getParcelableExtra(Intent.EXTRA_STREAM));
 425         } else if (getIntent().getAction().equals(Intent.ACTION_SEND_MULTIPLE)) {
 426             mStreamsToUpload = getIntent().getParcelableArrayListExtra(Intent.EXTRA_STREAM);
 427         }
 428     }
 429
 430     private boolean somethingToUpload() {
 431         return (mStreamsToUpload != null && mStreamsToUpload.get(0) != null);
 432     }
 433
 434     public void uploadFiles() {
 435         try {
 436
 437             ArrayList<String> local = new ArrayList<String>();
 438             ArrayList<String> remote = new ArrayList<String>();
 439
 440             // this checks the mimeType
 441             for (Parcelable mStream : mStreamsToUpload) {
 442
 443                 Uri uri = (Uri) mStream;
 444                 String data = null;
 445                 String filePath = "";
 446
 447                 if (uri != null) {
 448                     if (uri.getScheme().equals("content")) {
 449                         String mimeType = getContentResolver().getType(uri);
 450
 451                         if (mimeType.contains("image")) {
 452                             String[] CONTENT_PROJECTION = { Images.Media.DATA,
 453                                     Images.Media.DISPLAY_NAME, Images.Media.MIME_TYPE,
 454                                     Images.Media.SIZE };
 455                             Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 456                                     null, null);
 457                             c.moveToFirst();
 458                             int index = c.getColumnIndex(Images.Media.DATA);
 459                             data = c.getString(index);
 460                             filePath = mUploadPath +
 461                                     c.getString(c.getColumnIndex(Images.Media.DISPLAY_NAME));
 462
 463                         } else if (mimeType.contains("video")) {
 464                             String[] CONTENT_PROJECTION = { Video.Media.DATA,
 465                                    Video.Media.DISPLAY_NAME, Video.Media.MIME_TYPE,
 466                                    Video.Media.SIZE, Video.Media.DATE_MODIFIED };
 467                             Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 468                                    null, null);
 469                             c.moveToFirst();
 470                             int index = c.getColumnIndex(Video.Media.DATA);
 471                             data = c.getString(index);
 472                             filePath = mUploadPath +
 473                                    c.getString(c.getColumnIndex(Video.Media.DISPLAY_NAME));
 474
 475                         } else if (mimeType.contains("audio")) {
 476                             String[] CONTENT_PROJECTION = { Audio.Media.DATA,
 477                                    Audio.Media.DISPLAY_NAME, Audio.Media.MIME_TYPE,
 478                                    Audio.Media.SIZE };
 479                             Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 480                                    null, null);
 481                             c.moveToFirst();
 482                             int index = c.getColumnIndex(Audio.Media.DATA);
 483                             data = c.getString(index);
 484                             filePath = mUploadPath +
 485                                    c.getString(c.getColumnIndex(Audio.Media.DISPLAY_NAME));
 486
 487                         } else  {
 488                             Cursor cursor = getContentResolver().query(uri,
 489                                    new String[]{MediaStore.MediaColumns.DISPLAY_NAME},
 490                                    null, null, null);
 491                             cursor.moveToFirst();
 492                             int nameIndex = cursor.getColumnIndex(cursor.getColumnNames()[0]);
 493                             if (nameIndex >= 0) {
 494                                filePath = mUploadPath + cursor.getString(nameIndex);
 495                             }
 496                         }
 497                         if (data == null) {
 498                             CopyTmpFileAsyncTask copyTask = new CopyTmpFileAsyncTask(this);
 499                             Object[] params = { uri, filePath };
 500                             try {
 501                                 data = copyTask.execute(params).get();
 502                             } catch (ExecutionException e) {
 503                                 Log_OC.e(TAG, "ExecutionException " + e);
 504                             } catch (InterruptedException e) {
 505                                 Log_OC.e(TAG, "InterruptedException " + e);
 506                             }
 507                         }
 508
 509                         local.add(data);
 510                         remote.add(filePath);
 511
 512                     } else if (uri.getScheme().equals("file")) {
 513                         filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
 514                                 "://", "");
 515                         if (filePath.contains("mnt")) {
 516                            String splitedFilePath[] = filePath.split("/mnt");
 517                            filePath = splitedFilePath[1];
 518                         }
 519                         final File file = new File(filePath);
 520                         local.add(file.getAbsolutePath());
 521                         remote.add(mUploadPath + file.getName());
 522                     }
 523                     else {
 524                         throw new SecurityException();
 525                     }
 526                 }
 527                 else {
 528                     throw new SecurityException();
 529                 }
 530
 531                 Intent intent = new Intent(getApplicationContext(), FileUploader.class);
 532                 intent.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
 533                 intent.putExtra(FileUploader.KEY_LOCAL_FILE, local.toArray(new String[local.size()]));
 534                 intent.putExtra(FileUploader.KEY_REMOTE_FILE,
 535                         remote.toArray(new String[remote.size()]));
 536                 intent.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
 537                 startService(intent);
 538
 539                 //Save the path to shared preferences
 540                 SharedPreferences.Editor appPrefs = PreferenceManager
 541                         .getDefaultSharedPreferences(getApplicationContext()).edit();
 542                 appPrefs.putString("last_upload_path", mUploadPath);
 543                 appPrefs.apply();
 544
 545                 finish();
 546             }
 547
 548         } catch (SecurityException e) {
 549             String message = String.format(getString(R.string.uploader_error_forbidden_content),
 550                     getString(R.string.app_name));
 551             Toast.makeText(this, message, Toast.LENGTH_LONG).show();
 552         }
 553     }
 554
 555     @Override
 556     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 557         super.onRemoteOperationFinish(operation, result);
 558
 559
 560         if (operation instanceof CreateFolderOperation) {
 561             onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
 562         }
 563
 564     }
 565
 566     /**
 567      * Updates the view associated to the activity after the finish of an operation
 568      * trying create a new folder
 569      *
 570      * @param operation     Creation operation performed.
 571      * @param result        Result of the creation.
 572      */
 573     private void onCreateFolderOperationFinish(CreateFolderOperation operation,
 574                                                RemoteOperationResult result) {
 575         if (result.isSuccess()) {
 576             dismissLoadingDialog();
 577             populateDirectoryList();
 578         } else {
 579             dismissLoadingDialog();
 580             try {
 581                 Toast msg = Toast.makeText(this,
 582                         ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
 583                         Toast.LENGTH_LONG);
 584                 msg.show();
 585
 586             } catch (NotFoundException e) {
 587                 Log_OC.e(TAG, "Error while trying to show fail message " , e);
 588             }
 589         }
 590     }
 591
 592
 593     /**
 594      *  Loads the target folder initialize shown to the user.
 595      *
 596      *  The target account has to be chosen before this method is called.
 597      */
 598     private void initTargetFolder() {
 599         if (getStorageManager() == null) {
 600             throw new IllegalStateException("Do not call this method before " +
 601                     "initializing mStorageManager");
 602         }
 603
 604         SharedPreferences appPreferences = PreferenceManager
 605                 .getDefaultSharedPreferences(getApplicationContext());
 606
 607         String last_path = appPreferences.getString("last_upload_path", "");
 608         // "/" equals root-directory
 609         if(last_path.equals("/")) {
 610             mParents.add("");
 611         } else{
 612             String[] dir_names = last_path.split("/");
 613             for (String dir : dir_names)
 614                 mParents.add(dir);
 615         }
 616         //Make sure that path still exists, if it doesn't pop the stack and try the previous path
 617         while(!getStorageManager().fileExists(generatePath(mParents)) && mParents.size() > 1){
 618             mParents.pop();
 619         }
 620     }
 621
 622
 623     @Override
 624     public boolean onOptionsItemSelected(MenuItem item) {
 625         boolean retval = true;
 626         switch (item.getItemId()) {
 627             case android.R.id.home:
 628                 if((mParents.size() > 1)) {
 629                     onBackPressed();
 630                 }
 631                 break;
 632
 633             default:
 634                 retval = super.onOptionsItemSelected(item);
 635         }
 636         return retval;
 637     }
 638
 639
 640     /**
 641      * Process the result of CopyTmpFileAsyncTask
 642      * @param result
 643      */
 644     @Override
 645     public void OnCopyTmpFileTaskListener(String result) {
 646
 647     }
 648
 649 }