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.Audio;
  59 import android.provider.MediaStore.Images;
  60 import android.provider.MediaStore.Video;
  61 import android.view.View;
  62 import android.widget.AdapterView;
  63 import android.widget.AdapterView.OnItemClickListener;
  64 import android.widget.Button;
  65 import android.widget.EditText;
  66 import android.widget.ListView;
  67 import android.widget.SimpleAdapter;
  68 import android.widget.Toast;
  69
  70 import com.actionbarsherlock.app.ActionBar;
  71 import com.actionbarsherlock.view.MenuItem;
  72 import com.owncloud.android.MainApp;
  73 import com.owncloud.android.R;
  74 import com.owncloud.android.authentication.AccountAuthenticator;
  75 import com.owncloud.android.datamodel.OCFile;
  76 import com.owncloud.android.files.services.FileUploader;
  77 import com.owncloud.android.lib.common.operations.RemoteOperation;
  78 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  79 import com.owncloud.android.lib.common.utils.Log_OC;
  80 import com.owncloud.android.operations.CreateFolderOperation;
  81 import com.owncloud.android.ui.dialog.CreateFolderDialogFragment;
  82 import com.owncloud.android.utils.CopyTmpFileAsyncTask;
  83 import com.owncloud.android.utils.DisplayUtils;
  84 import com.owncloud.android.utils.ErrorMessageAdapter;
  85 import com.owncloud.android.utils.FileStorageUtils;
  86 import com.owncloud.android.utils.UriUtils;
  87
  88
  89 /**
  90  * This can be used to upload things to an ownCloud instance.
  91  */
  92 public class Uploader extends FileActivity
  93         implements OnItemClickListener, android.view.View.OnClickListener,
  94         CopyTmpFileAsyncTask.OnCopyTmpFileTaskListener {
  95
  96     private static final String TAG = Uploader.class.getSimpleName();
  97
  98     private AccountManager mAccountManager;
  99     private Stack<String> mParents;
 100     private ArrayList<Parcelable> mStreamsToUpload;
 101     private boolean mCreateDir;
 102     private String mUploadPath;
 103     private OCFile mFile;
 104     private boolean mAccountSelected;
 105
 106     private final static int DIALOG_NO_ACCOUNT = 0;
 107     private final static int DIALOG_WAITING = 1;
 108     private final static int DIALOG_NO_STREAM = 2;
 109     private final static int DIALOG_MULTIPLE_ACCOUNT = 3;
 110
 111     private final static int REQUEST_CODE_SETUP_ACCOUNT = 0;
 112
 113     private final static String KEY_PARENTS = "PARENTS";
 114     private final static String KEY_FILE = "FILE";
 115     private final static String KEY_ACCOUNT_SELECTED = "ACCOUNT_SELECTED";
 116
 117     @Override
 118     protected void onCreate(Bundle savedInstanceState) {
 119         prepareStreamsToUpload();
 120
 121         if (savedInstanceState == null) {
 122             mParents = new Stack<String>();
 123             mAccountSelected = false;
 124         } else {
 125             mParents = (Stack<String>) savedInstanceState.getSerializable(KEY_PARENTS);
 126             mFile = savedInstanceState.getParcelable(KEY_FILE);
 127             mAccountSelected = savedInstanceState.getBoolean(KEY_ACCOUNT_SELECTED);
 128         }
 129         super.onCreate(savedInstanceState);
 130
 131         ActionBar actionBar = getSupportActionBar();
 132         actionBar.setIcon(DisplayUtils.getSeasonalIconId());
 133
 134     }
 135
 136     @Override
 137     protected void setAccount(Account account, boolean savedAccount) {
 138         if (somethingToUpload()) {
 139             mAccountManager = (AccountManager) getSystemService(Context.ACCOUNT_SERVICE);
 140             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAccountType());
 141             if (accounts.length == 0) {
 142                 Log_OC.i(TAG, "No ownCloud account is available");
 143                 showDialog(DIALOG_NO_ACCOUNT);
 144             } else if (accounts.length > 1 && !mAccountSelected) {
 145                 Log_OC.i(TAG, "More than one ownCloud is available");
 146                 showDialog(DIALOG_MULTIPLE_ACCOUNT);
 147             } else {
 148                 if (!savedAccount) {
 149                     setAccount(accounts[0]);
 150                 }
 151             }
 152
 153         } else {
 154             showDialog(DIALOG_NO_STREAM);
 155         }
 156
 157         super.setAccount(account, savedAccount);
 158     }
 159
 160     @Override
 161     protected void onAccountSet(boolean stateWasRecovered) {
 162         super.onAccountSet(mAccountWasRestored);
 163         initTargetFolder();
 164         populateDirectoryList();
 165     }
 166
 167     @Override
 168     protected void onSaveInstanceState(Bundle outState) {
 169          Log_OC.d(TAG, "onSaveInstanceState() start");
 170         super.onSaveInstanceState(outState);
 171         outState.putSerializable(KEY_PARENTS, mParents);
 172         //outState.putParcelable(KEY_ACCOUNT, mAccount);
 173         outState.putParcelable(KEY_FILE, mFile);
 174         outState.putBoolean(KEY_ACCOUNT_SELECTED, mAccountSelected);
 175
 176         Log_OC.d(TAG, "onSaveInstanceState() end");
 177     }
 178
 179     @Override
 180     protected Dialog onCreateDialog(final int id) {
 181         final AlertDialog.Builder builder = new Builder(this);
 182         switch (id) {
 183         case DIALOG_WAITING:
 184             ProgressDialog pDialog = new ProgressDialog(this);
 185             pDialog.setIndeterminate(false);
 186             pDialog.setCancelable(false);
 187             pDialog.setMessage(getResources().getString(R.string.uploader_info_uploading));
 188             return pDialog;
 189         case DIALOG_NO_ACCOUNT:
 190             builder.setIcon(android.R.drawable.ic_dialog_alert);
 191             builder.setTitle(R.string.uploader_wrn_no_account_title);
 192             builder.setMessage(String.format(
 193                     getString(R.string.uploader_wrn_no_account_text), getString(R.string.app_name)));
 194             builder.setCancelable(false);
 195             builder.setPositiveButton(R.string.uploader_wrn_no_account_setup_btn_text, new OnClickListener() {
 196                 @Override
 197                 public void onClick(DialogInterface dialog, int which) {
 198                     if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.ECLAIR_MR1) {
 199                         // using string value since in API7 this
 200                         // constatn is not defined
 201                         // in API7 < this constatant is defined in
 202                         // Settings.ADD_ACCOUNT_SETTINGS
 203                         // and Settings.EXTRA_AUTHORITIES
 204                         Intent intent = new Intent(android.provider.Settings.ACTION_ADD_ACCOUNT);
 205                         intent.putExtra("authorities", new String[] { MainApp.getAuthTokenType() });
 206                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 207                     } else {
 208                         // since in API7 there is no direct call for
 209                         // account setup, so we need to
 210                         // show our own AccountSetupAcricity, get
 211                         // desired results and setup
 212                         // everything for ourself
 213                         Intent intent = new Intent(getBaseContext(), AccountAuthenticator.class);
 214                         startActivityForResult(intent, REQUEST_CODE_SETUP_ACCOUNT);
 215                     }
 216                 }
 217             });
 218             builder.setNegativeButton(R.string.uploader_wrn_no_account_quit_btn_text, new OnClickListener() {
 219                 @Override
 220                 public void onClick(DialogInterface dialog, int which) {
 221                     finish();
 222                 }
 223             });
 224             return builder.create();
 225         case DIALOG_MULTIPLE_ACCOUNT:
 226             CharSequence ac[] = new CharSequence[
 227                     mAccountManager.getAccountsByType(MainApp.getAccountType()).length];
 228             for (int i = 0; i < ac.length; ++i) {
 229                 ac[i] = DisplayUtils.convertIdn(
 230                         mAccountManager.getAccountsByType(MainApp.getAccountType())[i].name, false);
 231             }
 232             builder.setTitle(R.string.common_choose_account);
 233             builder.setItems(ac, new OnClickListener() {
 234                 @Override
 235                 public void onClick(DialogInterface dialog, int which) {
 236                     setAccount(mAccountManager.getAccountsByType(MainApp.getAccountType())[which]);
 237                     onAccountSet(mAccountWasRestored);
 238                     dialog.dismiss();
 239                     mAccountSelected = true;
 240                 }
 241             });
 242             builder.setCancelable(true);
 243             builder.setOnCancelListener(new OnCancelListener() {
 244                 @Override
 245                 public void onCancel(DialogInterface dialog) {
 246                     dialog.cancel();
 247                     finish();
 248                 }
 249             });
 250             return builder.create();
 251         case DIALOG_NO_STREAM:
 252             builder.setIcon(android.R.drawable.ic_dialog_alert);
 253             builder.setTitle(R.string.uploader_wrn_no_content_title);
 254             builder.setMessage(R.string.uploader_wrn_no_content_text);
 255             builder.setCancelable(false);
 256             builder.setNegativeButton(R.string.common_cancel, new OnClickListener() {
 257                 @Override
 258                 public void onClick(DialogInterface dialog, int which) {
 259                     finish();
 260                 }
 261             });
 262             return builder.create();
 263         default:
 264             throw new IllegalArgumentException("Unknown dialog id: " + id);
 265         }
 266     }
 267
 268     class a implements OnClickListener {
 269         String mPath;
 270         EditText mDirname;
 271
 272         public a(String path, EditText dirname) {
 273             mPath = path;
 274             mDirname = dirname;
 275         }
 276
 277         @Override
 278         public void onClick(DialogInterface dialog, int which) {
 279             Uploader.this.mUploadPath = mPath + mDirname.getText().toString();
 280             Uploader.this.mCreateDir = true;
 281             uploadFiles();
 282         }
 283     }
 284
 285     @Override
 286     public void onBackPressed() {
 287
 288         if (mParents.size() <= 1) {
 289             super.onBackPressed();
 290             return;
 291         } else {
 292             mParents.pop();
 293             populateDirectoryList();
 294         }
 295     }
 296
 297     @Override
 298     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 299         // click on folder in the list
 300         Log_OC.d(TAG, "on item click");
 301         Vector<OCFile> tmpfiles = getStorageManager().getFolderContent(mFile);
 302         if (tmpfiles.size() <= 0) return;
 303         // filter on dirtype
 304         Vector<OCFile> files = new Vector<OCFile>();
 305         for (OCFile f : tmpfiles)
 306             if (f.isFolder())
 307                 files.add(f);
 308         if (files.size() < position) {
 309             throw new IndexOutOfBoundsException("Incorrect item selected");
 310         }
 311         mParents.push(files.get(position).getFileName());
 312         populateDirectoryList();
 313     }
 314
 315     @Override
 316     public void onClick(View v) {
 317         // click on button
 318         switch (v.getId()) {
 319         case R.id.uploader_choose_folder:
 320             mUploadPath = "";   // first element in mParents is root dir, represented by "";
 321                                 // init mUploadPath with "/" results in a "//" prefix
 322             for (String p : mParents)
 323                 mUploadPath += p + OCFile.PATH_SEPARATOR;
 324             Log_OC.d(TAG, "Uploading file to dir " + mUploadPath);
 325
 326             uploadFiles();
 327
 328             break;
 329
 330         case R.id.uploader_new_folder:
 331             CreateFolderDialogFragment dialog = CreateFolderDialogFragment.newInstance(mFile);
 332             dialog.show(getSupportFragmentManager(), "createdirdialog");
 333             break;
 334
 335
 336         default:
 337             throw new IllegalArgumentException("Wrong element clicked");
 338         }
 339     }
 340
 341     @Override
 342     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 343         super.onActivityResult(requestCode, resultCode, data);
 344         Log_OC.i(TAG, "result received. req: " + requestCode + " res: " + resultCode);
 345         if (requestCode == REQUEST_CODE_SETUP_ACCOUNT) {
 346             dismissDialog(DIALOG_NO_ACCOUNT);
 347             if (resultCode == RESULT_CANCELED) {
 348                 finish();
 349             }
 350             Account[] accounts = mAccountManager.getAccountsByType(MainApp.getAuthTokenType());
 351             if (accounts.length == 0) {
 352                 showDialog(DIALOG_NO_ACCOUNT);
 353             } else {
 354                 // there is no need for checking for is there more then one
 355                 // account at this point
 356                 // since account setup can set only one account at time
 357                 setAccount(accounts[0]);
 358                 populateDirectoryList();
 359             }
 360         }
 361     }
 362
 363     private void populateDirectoryList() {
 364         setContentView(R.layout.uploader_layout);
 365
 366         ListView mListView = (ListView) findViewById(android.R.id.list);
 367
 368         String current_dir = mParents.peek();
 369         if(current_dir.equals("")){
 370             getSupportActionBar().setTitle(getString(R.string.default_display_name_for_root_folder));
 371         }
 372         else{
 373             getSupportActionBar().setTitle(current_dir);
 374         }
 375         boolean notRoot = (mParents.size() > 1);
 376         ActionBar actionBar = getSupportActionBar();
 377         actionBar.setDisplayHomeAsUpEnabled(notRoot);
 378         actionBar.setHomeButtonEnabled(notRoot);
 379
 380         String full_path = generatePath(mParents);
 381
 382         Log_OC.d(TAG, "Populating view with content of : " + full_path);
 383
 384         mFile = getStorageManager().getFileByPath(full_path);
 385         if (mFile != null) {
 386             Vector<OCFile> files = getStorageManager().getFolderContent(mFile);
 387             List<HashMap<String, Object>> data = new LinkedList<HashMap<String,Object>>();
 388             for (OCFile f : files) {
 389                 HashMap<String, Object> h = new HashMap<String, Object>();
 390                 if (f.isFolder()) {
 391                     h.put("dirname", f.getFileName());
 392                     data.add(h);
 393                 }
 394             }
 395             SimpleAdapter sa = new SimpleAdapter(this,
 396                                                 data,
 397                                                 R.layout.uploader_list_item_layout,
 398                                                 new String[] {"dirname"},
 399                                                 new int[] {R.id.textView1});
 400
 401             mListView.setAdapter(sa);
 402             Button btnChooseFolder = (Button) findViewById(R.id.uploader_choose_folder);
 403             btnChooseFolder.setOnClickListener(this);
 404
 405             Button btnNewFolder = (Button) findViewById(R.id.uploader_new_folder);
 406             btnNewFolder.setOnClickListener(this);
 407
 408             mListView.setOnItemClickListener(this);
 409         }
 410     }
 411
 412     private String generatePath(Stack<String> dirs) {
 413         String full_path = "";
 414
 415         for (String a : dirs)
 416             full_path += a + "/";
 417         return full_path;
 418     }
 419
 420     private void prepareStreamsToUpload() {
 421         if (getIntent().getAction().equals(Intent.ACTION_SEND)) {
 422             mStreamsToUpload = new ArrayList<Parcelable>();
 423             mStreamsToUpload.add(getIntent().getParcelableExtra(Intent.EXTRA_STREAM));
 424         } else if (getIntent().getAction().equals(Intent.ACTION_SEND_MULTIPLE)) {
 425             mStreamsToUpload = getIntent().getParcelableArrayListExtra(Intent.EXTRA_STREAM);
 426         }
 427     }
 428
 429     private boolean somethingToUpload() {
 430         return (mStreamsToUpload != null && mStreamsToUpload.get(0) != null);
 431     }
 432
 433     public void uploadFiles() {
 434         try {
 435
 436             ArrayList<String> local = new ArrayList<String>();
 437             ArrayList<String> remote = new ArrayList<String>();
 438
 439             // this checks the mimeType
 440             for (Parcelable mStream : mStreamsToUpload) {
 441
 442                 Uri uri = (Uri) mStream;
 443                 if (uri != null) {
 444                     if (uri.getScheme().equals("content")) {
 445
 446                        String mimeType = getContentResolver().getType(uri);
 447
 448                        if (mimeType.contains("image")) {
 449                            String[] CONTENT_PROJECTION = { Images.Media.DATA,
 450                                    Images.Media.DISPLAY_NAME, Images.Media.MIME_TYPE,
 451                                    Images.Media.SIZE };
 452                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 453                                    null, null);
 454                            c.moveToFirst();
 455                            int index = c.getColumnIndex(Images.Media.DATA);
 456                            String data = c.getString(index);
 457                            String filePath = mUploadPath +
 458                                    c.getString(c.getColumnIndex(Images.Media.DISPLAY_NAME));
 459
 460                            if (data == null) {
 461                                CopyTmpFileAsyncTask copyTask = new CopyTmpFileAsyncTask(this);
 462                                Object[] params = { uri, filePath };
 463                                try {
 464                                    data = copyTask.execute(params).get();
 465                                } catch (ExecutionException e) {
 466                                    Log_OC.e(TAG, "ExecutionException " + e);
 467                                } catch (InterruptedException e) {
 468                                    Log_OC.e(TAG, "InterruptedException " + e);
 469                                }
 470                            }
 471
 472                            local.add(data);
 473                            remote.add(mUploadPath +
 474                                    c.getString(c.getColumnIndex(Images.Media.DISPLAY_NAME)));
 475
 476                        }
 477                        else if (mimeType.contains("video")) {
 478                            String[] CONTENT_PROJECTION = { Video.Media.DATA,
 479                                    Video.Media.DISPLAY_NAME, Video.Media.MIME_TYPE,
 480                                    Video.Media.SIZE, Video.Media.DATE_MODIFIED };
 481                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 482                                    null, null);
 483                            c.moveToFirst();
 484                            int index = c.getColumnIndex(Video.Media.DATA);
 485                            String data = c.getString(index);
 486                            local.add(data);
 487                            remote.add(mUploadPath +
 488                                    c.getString(c.getColumnIndex(Video.Media.DISPLAY_NAME)));
 489
 490                        }
 491                        else if (mimeType.contains("audio")) {
 492                            String[] CONTENT_PROJECTION = { Audio.Media.DATA,
 493                                    Audio.Media.DISPLAY_NAME, Audio.Media.MIME_TYPE,
 494                                    Audio.Media.SIZE };
 495                            Cursor c = getContentResolver().query(uri, CONTENT_PROJECTION, null,
 496                                    null, null);
 497                            c.moveToFirst();
 498                            int index = c.getColumnIndex(Audio.Media.DATA);
 499                            String data = c.getString(index);
 500                            local.add(data);
 501                            remote.add(mUploadPath +
 502                                    c.getString(c.getColumnIndex(Audio.Media.DISPLAY_NAME)));
 503
 504                        }
 505                        else {
 506                            String filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
 507                                    "://", "");
 508                            // cut everything whats before mnt. It occurred to me that sometimes
 509                            // apps send their name into the URI
 510                            if (filePath.contains("mnt")) {
 511                               String splitedFilePath[] = filePath.split("/mnt");
 512                               filePath = splitedFilePath[1];
 513                            }
 514                            final File file = new File(filePath);
 515                            local.add(file.getAbsolutePath());
 516                            remote.add(mUploadPath + file.getName());
 517                        }
 518
 519                     } else if (uri.getScheme().equals("file")) {
 520                         String filePath = Uri.decode(uri.toString()).replace(uri.getScheme() +
 521                                 "://", "");
 522                         if (filePath.contains("mnt")) {
 523                            String splitedFilePath[] = filePath.split("/mnt");
 524                            filePath = splitedFilePath[1];
 525                         }
 526                         final File file = new File(filePath);
 527                         local.add(file.getAbsolutePath());
 528                         remote.add(mUploadPath + file.getName());
 529                     }
 530                     else {
 531                         throw new SecurityException();
 532                     }
 533                 }
 534                 else {
 535                     throw new SecurityException();
 536                 }
 537
 538             Intent intent = new Intent(getApplicationContext(), FileUploader.class);
 539             intent.putExtra(FileUploader.KEY_UPLOAD_TYPE, FileUploader.UPLOAD_MULTIPLE_FILES);
 540             intent.putExtra(FileUploader.KEY_LOCAL_FILE, local.toArray(new String[local.size()]));
 541             intent.putExtra(FileUploader.KEY_REMOTE_FILE,
 542                     remote.toArray(new String[remote.size()]));
 543             intent.putExtra(FileUploader.KEY_ACCOUNT, getAccount());
 544             startService(intent);
 545
 546             //Save the path to shared preferences
 547             SharedPreferences.Editor appPrefs = PreferenceManager
 548                     .getDefaultSharedPreferences(getApplicationContext()).edit();
 549             appPrefs.putString("last_upload_path", mUploadPath);
 550             appPrefs.apply();
 551
 552             finish();
 553             }
 554
 555         } catch (SecurityException e) {
 556             String message = String.format(getString(R.string.uploader_error_forbidden_content),
 557                     getString(R.string.app_name));
 558             Toast.makeText(this, message, Toast.LENGTH_LONG).show();
 559         }
 560     }
 561
 562     @Override
 563     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 564         super.onRemoteOperationFinish(operation, result);
 565
 566
 567         if (operation instanceof CreateFolderOperation) {
 568             onCreateFolderOperationFinish((CreateFolderOperation)operation, result);
 569         }
 570
 571     }
 572
 573     /**
 574      * Updates the view associated to the activity after the finish of an operation
 575      * trying create a new folder
 576      *
 577      * @param operation     Creation operation performed.
 578      * @param result        Result of the creation.
 579      */
 580     private void onCreateFolderOperationFinish(CreateFolderOperation operation,
 581                                                RemoteOperationResult result) {
 582         if (result.isSuccess()) {
 583             dismissLoadingDialog();
 584             populateDirectoryList();
 585         } else {
 586             dismissLoadingDialog();
 587             try {
 588                 Toast msg = Toast.makeText(this,
 589                         ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()),
 590                         Toast.LENGTH_LONG);
 591                 msg.show();
 592
 593             } catch (NotFoundException e) {
 594                 Log_OC.e(TAG, "Error while trying to show fail message " , e);
 595             }
 596         }
 597     }
 598
 599
 600     /**
 601      *  Loads the target folder initialize shown to the user.
 602      *
 603      *  The target account has to be chosen before this method is called.
 604      */
 605     private void initTargetFolder() {
 606         if (getStorageManager() == null) {
 607             throw new IllegalStateException("Do not call this method before " +
 608                     "initializing mStorageManager");
 609         }
 610
 611         SharedPreferences appPreferences = PreferenceManager
 612                 .getDefaultSharedPreferences(getApplicationContext());
 613
 614         String last_path = appPreferences.getString("last_upload_path", "");
 615         // "/" equals root-directory
 616         if(last_path.equals("/")) {
 617             mParents.add("");
 618         } else{
 619             String[] dir_names = last_path.split("/");
 620             for (String dir : dir_names)
 621                 mParents.add(dir);
 622         }
 623         //Make sure that path still exists, if it doesn't pop the stack and try the previous path
 624         while(!getStorageManager().fileExists(generatePath(mParents)) && mParents.size() > 1){
 625             mParents.pop();
 626         }
 627     }
 628
 629
 630     @Override
 631     public boolean onOptionsItemSelected(MenuItem item) {
 632         boolean retval = true;
 633         switch (item.getItemId()) {
 634             case android.R.id.home:
 635                 if((mParents.size() > 1)) {
 636                     onBackPressed();
 637                 }
 638                 break;
 639
 640             default:
 641                 retval = super.onOptionsItemSelected(item);
 642         }
 643         return retval;
 644     }
 645
 646
 647     /**
 648      * Process the result of CopyTmpFileAsyncTask
 649      * @param result
 650      */
 651     @Override
 652     public void OnCopyTmpFileTaskListener(String result) {
 653
 654     }
 655
 656 }