src/com/owncloud/android/ui/preview/PreviewImageFragment.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program 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 for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18 package com.owncloud.android.ui.preview;
  19
  20 import java.io.File;
  21 import java.lang.ref.WeakReference;
  22 import java.util.ArrayList;
  23 import java.util.List;
  24
  25
  26 import android.accounts.Account;
  27 import android.annotation.SuppressLint;
  28 import android.app.Activity;
  29 import android.content.ActivityNotFoundException;
  30 import android.content.Intent;
  31 import android.graphics.Bitmap;
  32 import android.graphics.BitmapFactory;
  33 import android.graphics.BitmapFactory.Options;
  34 import android.graphics.Point;
  35 import android.net.Uri;
  36 import android.os.AsyncTask;
  37 import android.os.Bundle;
  38 import android.os.Handler;
  39 import android.support.v4.app.FragmentStatePagerAdapter;
  40 import android.util.Log;
  41 import android.view.Display;
  42 import android.view.LayoutInflater;
  43 import android.view.View;
  44 import android.view.View.OnTouchListener;
  45 import android.view.ViewGroup;
  46 import android.webkit.MimeTypeMap;
  47 import android.widget.ImageView;
  48 import android.widget.TextView;
  49 import android.widget.Toast;
  50
  51 import com.actionbarsherlock.app.SherlockFragment;
  52 import com.actionbarsherlock.view.Menu;
  53 import com.actionbarsherlock.view.MenuInflater;
  54 import com.actionbarsherlock.view.MenuItem;
  55 import com.owncloud.android.datamodel.FileDataStorageManager;
  56 import com.owncloud.android.datamodel.OCFile;
  57 import com.owncloud.android.network.OwnCloudClientUtils;
  58 import com.owncloud.android.operations.OnRemoteOperationListener;
  59 import com.owncloud.android.operations.RemoteOperation;
  60 import com.owncloud.android.operations.RemoteOperationResult;
  61 import com.owncloud.android.operations.RemoveFileOperation;
  62 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
  63 import com.owncloud.android.ui.fragment.FileFragment;
  64
  65 import com.owncloud.android.R;
  66 import eu.alefzero.webdav.WebdavClient;
  67 import eu.alefzero.webdav.WebdavUtils;
  68
  69
  70 /**
  71  * This fragment shows a preview of a downloaded image.
  72  *
  73  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
  74  *
  75  * If the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
  76  *
  77  * @author David A. Velasco
  78  */
  79 public class PreviewImageFragment extends SherlockFragment implements   FileFragment,
  80                                                                         OnRemoteOperationListener,
  81                                                                         ConfirmationDialogFragment.ConfirmationDialogFragmentListener {
  82     public static final String EXTRA_FILE = "FILE";
  83     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  84
  85     private View mView;
  86     private OCFile mFile;
  87     private Account mAccount;
  88     private FileDataStorageManager mStorageManager;
  89     private ImageView mImageView;
  90     private TextView mMessageView;
  91
  92     public Bitmap mBitmap = null;
  93
  94     private Handler mHandler;
  95     private RemoteOperation mLastRemoteOperation;
  96
  97     private static final String TAG = PreviewImageFragment.class.getSimpleName();
  98
  99     private boolean mIgnoreFirstSavedState;
 100
 101
 102     /**
 103      * Creates a fragment to preview an image.
 104      *
 105      * When 'imageFile' or 'ocAccount' are null
 106      *
 107      * @param imageFile                 An {@link OCFile} to preview as an image in the fragment
 108      * @param ocAccount                 An ownCloud account; needed to start downloads
 109      * @param ignoreFirstSavedState     Flag to work around an unexpected behaviour of {@link FragmentStatePagerAdapter}; TODO better solution
 110      */
 111     public PreviewImageFragment(OCFile fileToDetail, Account ocAccount, boolean ignoreFirstSavedState) {
 112         mFile = fileToDetail;
 113         mAccount = ocAccount;
 114         mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
 115         mIgnoreFirstSavedState = ignoreFirstSavedState;
 116     }
 117
 118
 119     /**
 120      *  Creates an empty fragment for image previews.
 121      *
 122      *  MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
 123      *
 124      *  DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
 125      */
 126     public PreviewImageFragment() {
 127         mFile = null;
 128         mAccount = null;
 129         mStorageManager = null;
 130         mIgnoreFirstSavedState = false;
 131     }
 132
 133
 134     /**
 135      * {@inheritDoc}
 136      */
 137     @Override
 138     public void onCreate(Bundle savedInstanceState) {
 139         super.onCreate(savedInstanceState);
 140         mHandler = new Handler();
 141         setHasOptionsMenu(true);
 142     }
 143
 144
 145     /**
 146      * {@inheritDoc}
 147      */
 148     @Override
 149     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 150             Bundle savedInstanceState) {
 151         super.onCreateView(inflater, container, savedInstanceState);
 152         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
 153         mImageView = (ImageView)mView.findViewById(R.id.image);
 154         mView.setOnTouchListener((OnTouchListener)getActivity());   // WATCH OUT THAT CAST
 155         mMessageView = (TextView)mView.findViewById(R.id.message);
 156         mMessageView.setVisibility(View.GONE);
 157         return mView;
 158     }
 159
 160
 161     /**
 162      * {@inheritDoc}
 163      */
 164     @Override
 165     public void onAttach(Activity activity) {
 166         super.onAttach(activity);
 167         if (!(activity instanceof FileFragment.ContainerActivity))
 168             throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
 169     }
 170
 171
 172     /**
 173      * {@inheritDoc}
 174      */
 175     @Override
 176     public void onActivityCreated(Bundle savedInstanceState) {
 177         super.onActivityCreated(savedInstanceState);
 178         mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
 179         if (savedInstanceState != null) {
 180             if (!mIgnoreFirstSavedState) {
 181                 mFile = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
 182                 mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
 183             } else {
 184                 mIgnoreFirstSavedState = false;
 185             }
 186         }
 187         if (mFile == null) {
 188             throw new IllegalStateException("Instanced with a NULL OCFile");
 189         }
 190         if (mAccount == null) {
 191             throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 192         }
 193         if (!mFile.isDown()) {
 194             throw new IllegalStateException("There is no local file to preview");
 195         }
 196     }
 197
 198
 199     /**
 200      * {@inheritDoc}
 201      */
 202     @Override
 203     public void onSaveInstanceState(Bundle outState) {
 204         super.onSaveInstanceState(outState);
 205         outState.putParcelable(PreviewImageFragment.EXTRA_FILE, mFile);
 206         outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
 207     }
 208
 209
 210     @Override
 211     public void onStart() {
 212         super.onStart();
 213         if (mFile != null) {
 214            BitmapLoader bl = new BitmapLoader(mImageView, mMessageView);
 215            bl.execute(new String[]{mFile.getStoragePath()});
 216         }
 217     }
 218
 219
 220     /**
 221      * {@inheritDoc}
 222      */
 223     @Override
 224     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 225         super.onCreateOptionsMenu(menu, inflater);
 226
 227         inflater.inflate(R.menu.file_actions_menu, menu);
 228         List<Integer> toHide = new ArrayList<Integer>();
 229
 230         MenuItem item = null;
 231         toHide.add(R.id.action_cancel_download);
 232         toHide.add(R.id.action_cancel_upload);
 233         toHide.add(R.id.action_download_file);
 234         toHide.add(R.id.action_rename_file);    // by now
 235
 236         for (int i : toHide) {
 237             item = menu.findItem(i);
 238             if (item != null) {
 239                 item.setVisible(false);
 240                 item.setEnabled(false);
 241             }
 242         }
 243
 244     }
 245
 246
 247     /**
 248      * {@inheritDoc}
 249      */
 250     @Override
 251     public boolean onOptionsItemSelected(MenuItem item) {
 252         switch (item.getItemId()) {
 253             case R.id.action_open_file_with: {
 254                 openFile();
 255                 return true;
 256             }
 257             case R.id.action_remove_file: {
 258                 removeFile();
 259                 return true;
 260             }
 261             case R.id.action_see_details: {
 262                 seeDetails();
 263                 return true;
 264             }
 265
 266             default:
 267                 return false;
 268         }
 269     }
 270
 271
 272     private void seeDetails() {
 273         ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
 274     }
 275
 276
 277     @Override
 278     public void onResume() {
 279         super.onResume();
 280         Log.e(TAG, "FRAGMENT, ONRESUME");
 281         /*
 282         mDownloadFinishReceiver = new DownloadFinishReceiver();
 283         IntentFilter filter = new IntentFilter(
 284                 FileDownloader.DOWNLOAD_FINISH_MESSAGE);
 285         getActivity().registerReceiver(mDownloadFinishReceiver, filter);
 286
 287         mUploadFinishReceiver = new UploadFinishReceiver();
 288         filter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
 289         getActivity().registerReceiver(mUploadFinishReceiver, filter);
 290         */
 291
 292     }
 293
 294
 295     @Override
 296     public void onPause() {
 297         super.onPause();
 298         /*
 299         if (mVideoPreview.getVisibility() == View.VISIBLE) {
 300             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 301         }*/
 302         /*
 303         getActivity().unregisterReceiver(mDownloadFinishReceiver);
 304         mDownloadFinishReceiver = null;
 305
 306         getActivity().unregisterReceiver(mUploadFinishReceiver);
 307         mUploadFinishReceiver = null;
 308         */
 309     }
 310
 311
 312     @Override
 313     public void onDestroy() {
 314         super.onDestroy();
 315         if (mBitmap != null) {
 316             mBitmap.recycle();
 317         }
 318     }
 319
 320
 321     /**
 322      * Opens the previewed image with an external application.
 323      *
 324      * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
 325      * we should get a list of available apps for MIME tpye in the server and join it with the list of
 326      * available apps for the MIME type known from the file extension, to let the user choose
 327      */
 328     private void openFile() {
 329         String storagePath = mFile.getStoragePath();
 330         String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 331         try {
 332             Intent i = new Intent(Intent.ACTION_VIEW);
 333             i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
 334             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 335             startActivity(i);
 336
 337         } catch (Throwable t) {
 338             Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
 339             boolean toastIt = true;
 340             String mimeType = "";
 341             try {
 342                 Intent i = new Intent(Intent.ACTION_VIEW);
 343                 mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 344                 if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
 345                     if (mimeType != null) {
 346                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 347                     } else {
 348                         // desperate try
 349                         i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
 350                     }
 351                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 352                     startActivity(i);
 353                     toastIt = false;
 354                 }
 355
 356             } catch (IndexOutOfBoundsException e) {
 357                 Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 358
 359             } catch (ActivityNotFoundException e) {
 360                 Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 361
 362             } catch (Throwable th) {
 363                 Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 364
 365             } finally {
 366                 if (toastIt) {
 367                     Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
 368                 }
 369             }
 370
 371         }
 372         finish();
 373     }
 374
 375
 376     /**
 377      * Starts a the removal of the previewed file.
 378      *
 379      * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
 380      * depending upon the user selection in the dialog.
 381      */
 382     private void removeFile() {
 383         ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
 384                 R.string.confirmation_remove_alert,
 385                 new String[]{mFile.getFileName()},
 386                 R.string.confirmation_remove_remote_and_local,
 387                 R.string.confirmation_remove_local,
 388                 R.string.common_cancel);
 389         confDialog.setOnConfirmationListener(this);
 390         confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 391     }
 392
 393
 394     /**
 395      * Performs the removal of the previewed file, both locally and in the server.
 396      */
 397     @Override
 398     public void onConfirmation(String callerTag) {
 399         if (mStorageManager.getFileById(mFile.getFileId()) != null) {   // check that the file is still there;
 400             mLastRemoteOperation = new RemoveFileOperation( mFile,      // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
 401                                                             true,
 402                                                             mStorageManager);
 403             WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
 404             mLastRemoteOperation.execute(wc, this, mHandler);
 405
 406             getActivity().showDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
 407         }
 408     }
 409
 410
 411     /**
 412      * Removes the file from local storage
 413      */
 414     @Override
 415     public void onNeutral(String callerTag) {
 416         // TODO this code should be made in a secondary thread,
 417         if (mFile.isDown()) {   // checks it is still there
 418             File f = new File(mFile.getStoragePath());
 419             f.delete();
 420             mFile.setStoragePath(null);
 421             mStorageManager.saveFile(mFile);
 422             finish();
 423         }
 424     }
 425
 426     /**
 427      * User cancelled the removal action.
 428      */
 429     @Override
 430     public void onCancel(String callerTag) {
 431         // nothing to do here
 432     }
 433
 434
 435     /**
 436      * {@inheritDoc}
 437      */
 438     public OCFile getFile(){
 439         return mFile;
 440     }
 441
 442     /*
 443     /**
 444      * Use this method to signal this Activity that it shall update its view.
 445      *
 446      * @param file : An {@link OCFile}
 447      *-/
 448     public void updateFileDetails(OCFile file, Account ocAccount) {
 449         mFile = file;
 450         if (ocAccount != null && (
 451                 mStorageManager == null ||
 452                 (mAccount != null && !mAccount.equals(ocAccount))
 453            )) {
 454             mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
 455         }
 456         mAccount = ocAccount;
 457         updateFileDetails(false);
 458     }
 459     */
 460
 461
 462     private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
 463
 464         /**
 465          * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
 466          *
 467          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 468          */
 469         private final WeakReference<ImageView> mImageViewRef;
 470
 471         /**
 472          * Weak reference to the target {@link TextView} where error messages will be written.
 473          *
 474          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
 475          */
 476         private final WeakReference<TextView> mMessageViewRef;
 477
 478
 479         private Throwable mThrowable;
 480
 481
 482         /**
 483          * Constructor.
 484          *
 485          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
 486          */
 487         public BitmapLoader(ImageView imageView, TextView messageView) {
 488             mImageViewRef = new WeakReference<ImageView>(imageView);
 489             mMessageViewRef = new WeakReference<TextView>(messageView);
 490             mThrowable = null;
 491         }
 492
 493
 494         @SuppressWarnings("deprecation")
 495         @SuppressLint({ "NewApi", "NewApi", "NewApi" }) // to avoid Lint errors since Android SDK r20
 496                 @Override
 497         protected Bitmap doInBackground(String... params) {
 498             Bitmap result = null;
 499             if (params.length != 1) return result;
 500             String storagePath = params[0];
 501             try {
 502                 // set desired options that will affect the size of the bitmap
 503                 BitmapFactory.Options options = new Options();
 504                 options.inScaled = true;
 505                 options.inPurgeable = true;
 506                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
 507                     options.inPreferQualityOverSpeed = false;
 508                 }
 509                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
 510                     options.inMutable = false;
 511                 }
 512                 // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
 513                 options.inJustDecodeBounds = true;
 514                 BitmapFactory.decodeFile(storagePath, options);
 515
 516                 int width = options.outWidth;
 517                 int height = options.outHeight;
 518                 int scale = 1;
 519
 520                 /*
 521                 if (width >= 2048 || height >= 2048) {
 522                     // try to scale down the image to save memory
 523                     scale = (int) Math.ceil((Math.ceil(Math.max(height, width) / 2048.)));
 524                     options.inSampleSize = scale;
 525                 }
 526                 */
 527
 528                 Display display = getActivity().getWindowManager().getDefaultDisplay();
 529                 Point size = new Point();
 530                 int screenWidth;
 531                 int screenHeight;
 532                 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
 533                     display.getSize(size);
 534                     screenWidth = size.x;
 535                     screenHeight = size.y;
 536                 } else {
 537                     screenWidth = display.getWidth();
 538                     screenHeight = display.getHeight();
 539                 }
 540
 541                 if (width > screenWidth) {
 542                     // second try to scale down the image , this time depending upon the screen size; WTF...
 543                     scale = (int) Math.ceil((float)width / screenWidth);
 544                     options.inSampleSize = scale;
 545                 }
 546                 if (height > screenHeight) {
 547                     scale = Math.max(scale, (int) Math.ceil((float)height / screenHeight));
 548                 }
 549
 550
 551                 // really load the bitmap
 552                 options.inJustDecodeBounds = false; // the next decodeFile call will be real
 553                 result = BitmapFactory.decodeFile(storagePath, options);
 554                 //Log.d(TAG, "Image loaded - width: " + options.outWidth + ", loaded height: " + options.outHeight);
 555
 556             } catch (Throwable t) {
 557                 result = null;
 558                 mThrowable = t; // error processing is delayed to #onPostExecute(Bitmap)
 559                 Log.e(TAG, "Unexpected error while creating image preview " + storagePath, t);
 560             }
 561             return result;
 562         }
 563
 564         @Override
 565         protected void onPostExecute(Bitmap result) {
 566             if (mImageViewRef != null && result != null) {
 567                 final ImageView imageView = mImageViewRef.get();
 568                 if (imageView != null) {
 569                     imageView.setImageBitmap(result);
 570                     mBitmap  = result;
 571                     if (mMessageViewRef != null) {
 572                         final TextView messageView = mMessageViewRef.get();
 573                         if (messageView != null) {
 574                             messageView.setVisibility(View.GONE);
 575                         }
 576                     }
 577                 } // else , silently finish, the fragment was destroyed
 578
 579             } else if (mMessageViewRef != null && result == null) {
 580                 // error
 581                 int messageId;
 582                 if (mThrowable == null) {
 583                     messageId = R.string.preview_image_error_unknown_format;
 584                     Log.e(TAG, "File could not be loaded as a bitmap: " + mFile.getStoragePath());
 585
 586                 } else if (mThrowable instanceof OutOfMemoryError) {
 587                     messageId = R.string.preview_image_error_unknown_format;
 588                     Log.e(TAG, "Out of memory occured for file " + mFile.getStoragePath(), mThrowable);
 589
 590                 } else if (mThrowable instanceof NoSuchFieldError) {
 591                     messageId = R.string.common_error_unknown;
 592                     Log.e(TAG, "Error from access to unexisting field despite protection; file " + mFile.getStoragePath(), mThrowable);
 593
 594                 } else {
 595                     messageId = R.string.common_error_unknown;
 596                     Log.e(TAG, "Unexpected error loading " + mFile.getStoragePath(), mThrowable);
 597                 }
 598                 final TextView messageView = mMessageViewRef.get();
 599                 if (messageView != null) {
 600                     messageView.setText(messageId);
 601                     messageView.setVisibility(View.VISIBLE);
 602                 } // else , silently finish, the fragment was destroyed
 603
 604             }
 605
 606         }
 607
 608     }
 609
 610     /**
 611      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewImageFragment} to be previewed.
 612      *
 613      * @param file      File to test if can be previewed.
 614      * @return          'True' if the file can be handled by the fragment.
 615      */
 616     public static boolean canBePreviewed(OCFile file) {
 617         return (file != null && file.isImage());
 618     }
 619
 620
 621     /**
 622      * {@inheritDoc}
 623      */
 624     @Override
 625     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 626         if (operation.equals(mLastRemoteOperation) && operation instanceof RemoveFileOperation) {
 627             onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
 628         }
 629     }
 630
 631     private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
 632         getActivity().dismissDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
 633
 634         if (result.isSuccess()) {
 635             Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
 636             msg.show();
 637             finish();
 638
 639         } else {
 640             Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
 641             msg.show();
 642             if (result.isSslRecoverableException()) {
 643                 // TODO show the SSL warning dialog
 644             }
 645         }
 646     }
 647
 648     /**
 649      * Finishes the preview
 650      */
 651     private void finish() {
 652         Activity container = getActivity();
 653         container.finish();
 654     }
 655
 656
 657 }