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

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2015 ownCloud Inc.
   6  *
   7  *   This program is free software: you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License version 2,
   9  *   as published by the Free Software Foundation.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20 package com.owncloud.android.ui.preview;
  21
  22 import android.accounts.Account;
  23 import android.accounts.AuthenticatorException;
  24 import android.accounts.OperationCanceledException;
  25 import android.app.Activity;
  26 import android.content.ActivityNotFoundException;
  27 import android.graphics.Bitmap;
  28 import android.graphics.BitmapFactory;
  29 import android.media.MediaMetadataRetriever;
  30 import android.os.AsyncTask;
  31 import android.support.v7.app.AlertDialog;
  32 import android.content.ComponentName;
  33 import android.content.Context;
  34 import android.content.DialogInterface;
  35 import android.content.Intent;
  36 import android.content.ServiceConnection;
  37 import android.content.res.Configuration;
  38 import android.content.res.Resources;
  39 import android.media.MediaPlayer;
  40 import android.media.MediaPlayer.OnCompletionListener;
  41 import android.media.MediaPlayer.OnErrorListener;
  42 import android.media.MediaPlayer.OnPreparedListener;
  43 import android.net.Uri;
  44 import android.os.Build;
  45 import android.os.Bundle;
  46 import android.os.IBinder;
  47 import android.view.LayoutInflater;
  48 import android.view.Menu;
  49 import android.view.MenuInflater;
  50 import android.view.MenuItem;
  51 import android.view.MotionEvent;
  52 import android.view.View;
  53 import android.view.View.OnTouchListener;
  54 import android.view.ViewGroup;
  55 import android.widget.ImageView;
  56 import android.widget.Toast;
  57 import android.widget.VideoView;
  58
  59 import com.owncloud.android.MainApp;
  60 import com.owncloud.android.R;
  61 import com.owncloud.android.datamodel.OCFile;
  62 import com.owncloud.android.datamodel.ThumbnailsCacheManager;
  63 import com.owncloud.android.files.FileMenuFilter;
  64 import com.owncloud.android.lib.common.OwnCloudAccount;
  65 import com.owncloud.android.lib.common.OwnCloudClient;
  66 import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
  67 import com.owncloud.android.lib.common.OwnCloudCredentials;
  68 import com.owncloud.android.lib.common.accounts.AccountUtils;
  69 import com.owncloud.android.lib.common.utils.Log_OC;
  70 import com.owncloud.android.media.MediaControlView;
  71 import com.owncloud.android.media.MediaService;
  72 import com.owncloud.android.media.MediaServiceBinder;
  73 import com.owncloud.android.ui.activity.FileActivity;
  74 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
  75 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
  76 import com.owncloud.android.ui.fragment.FileFragment;
  77
  78 import java.io.IOException;
  79 import java.util.concurrent.ExecutionException;
  80
  81
  82 /**
  83  * This fragment shows a preview of a downloaded media file (audio or video).
  84  *
  85  * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will
  86  * produce an {@link IllegalStateException}.
  87  *
  88  * By now, if the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is
  89  * generated on instantiation too.
  90  */
  91 public class PreviewMediaFragment extends FileFragment implements
  92         OnTouchListener {
  93
  94     public static final String EXTRA_FILE = "FILE";
  95     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  96     private static final String EXTRA_PLAY_POSITION = "PLAY_POSITION";
  97     private static final String EXTRA_PLAYING = "PLAYING";
  98
  99     private View mView;
 100     private Account mAccount;
 101     private ImageView mImagePreview;
 102     private VideoView mVideoPreview;
 103     private int mSavedPlaybackPosition;
 104     private String mUri;
 105
 106     private MediaServiceBinder mMediaServiceBinder = null;
 107     private MediaControlView mMediaController = null;
 108     private MediaServiceConnection mMediaServiceConnection = null;
 109     private VideoHelper mVideoHelper;
 110     private boolean mAutoplay;
 111     public boolean mPrepared;
 112
 113     private static final String TAG = PreviewMediaFragment.class.getSimpleName();
 114
 115
 116     /**
 117      * Creates a fragment to preview a file.
 118      * <p/>
 119      * When 'fileToDetail' or 'ocAccount' are null
 120      *
 121      * @param fileToDetail An {@link OCFile} to preview in the fragment
 122      * @param ocAccount    An ownCloud account; needed to start downloads
 123      */
 124     public PreviewMediaFragment(
 125             OCFile fileToDetail,
 126             Account ocAccount,
 127             int startPlaybackPosition,
 128             boolean autoplay) {
 129
 130         super(fileToDetail);
 131         mAccount = ocAccount;
 132         mSavedPlaybackPosition = startPlaybackPosition;
 133         mAutoplay = autoplay;
 134     }
 135
 136
 137     /**
 138      * Creates an empty fragment for previews.
 139      * <p/>
 140      * MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically
 141      * (for instance, when the device is turned a aside).
 142      * <p/>
 143      * DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful
 144      * construction
 145      */
 146     public PreviewMediaFragment() {
 147         super();
 148         mAccount = null;
 149         mSavedPlaybackPosition = 0;
 150         mAutoplay = true;
 151     }
 152
 153
 154     /**
 155      * {@inheritDoc}
 156      */
 157     @Override
 158     public void onCreate(Bundle savedInstanceState) {
 159         super.onCreate(savedInstanceState);
 160         setHasOptionsMenu(true);
 161     }
 162
 163
 164     /**
 165      * {@inheritDoc}
 166      */
 167     @Override
 168     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 169                              Bundle savedInstanceState) {
 170         super.onCreateView(inflater, container, savedInstanceState);
 171         Log_OC.e(TAG, "onCreateView");
 172
 173
 174         mView = inflater.inflate(R.layout.file_preview, container, false);
 175
 176         mImagePreview = (ImageView) mView.findViewById(R.id.image_preview);
 177         mVideoPreview = (VideoView) mView.findViewById(R.id.video_preview);
 178         mVideoPreview.setOnTouchListener(this);
 179
 180         mMediaController = (MediaControlView) mView.findViewById(R.id.media_controller);
 181
 182         return mView;
 183     }
 184
 185
 186     /**
 187      * {@inheritDoc}
 188      */
 189     @Override
 190     public void onActivityCreated(Bundle savedInstanceState) {
 191         super.onActivityCreated(savedInstanceState);
 192         Log_OC.e(TAG, "onActivityCreated");
 193
 194         OCFile file = getFile();
 195         if (savedInstanceState == null) {
 196             if (file == null) {
 197                 throw new IllegalStateException("Instanced with a NULL OCFile");
 198             }
 199             if (mAccount == null) {
 200                 throw new IllegalStateException("Instanced with a NULL ownCloud Account");
 201             }
 202 //            if (!file.isDown()) {
 203 //                throw new IllegalStateException("There is no local file to preview");
 204 //            }
 205
 206         }
 207         else {
 208             file = (OCFile) savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_FILE);
 209             setFile(file);
 210             mAccount = savedInstanceState.getParcelable(PreviewMediaFragment.EXTRA_ACCOUNT);
 211             mSavedPlaybackPosition =
 212                     savedInstanceState.getInt(PreviewMediaFragment.EXTRA_PLAY_POSITION);
 213             mAutoplay = savedInstanceState.getBoolean(PreviewMediaFragment.EXTRA_PLAYING);
 214
 215         }
 216         if (file != null) {
 217             if (file.isVideo()) {
 218                 mVideoPreview.setVisibility(View.VISIBLE);
 219                 mImagePreview.setVisibility(View.GONE);
 220                 prepareVideo();
 221
 222             }
 223             else {
 224                 mVideoPreview.setVisibility(View.GONE);
 225                 mImagePreview.setVisibility(View.VISIBLE);
 226                 extractAndSetCoverArt(file);
 227             }
 228         }
 229
 230     }
 231
 232     /**
 233      * tries to read the cover art from the audio file and sets it as cover art.
 234      *
 235      * @param file audio file with potential cover art
 236      */
 237     private void extractAndSetCoverArt(OCFile file) {
 238         if (file.isAudio()) {
 239             try {
 240                 MediaMetadataRetriever mmr = new MediaMetadataRetriever();
 241                 mmr.setDataSource(file.getStoragePath());
 242                 byte[] data = mmr.getEmbeddedPicture();
 243                 if (data != null) {
 244                     Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
 245                     mImagePreview.setImageBitmap(bitmap); //associated cover art in bitmap
 246                 } else {
 247                     mImagePreview.setImageResource(R.drawable.logo);
 248                 }
 249             } catch (Throwable t) {
 250                 mImagePreview.setImageResource(R.drawable.logo);
 251             }
 252         }
 253     }
 254
 255
 256     /**
 257      * {@inheritDoc}
 258      */
 259     @Override
 260     public void onSaveInstanceState(Bundle outState) {
 261         super.onSaveInstanceState(outState);
 262         Log_OC.e(TAG, "onSaveInstanceState");
 263
 264         outState.putParcelable(PreviewMediaFragment.EXTRA_FILE, getFile());
 265         outState.putParcelable(PreviewMediaFragment.EXTRA_ACCOUNT, mAccount);
 266
 267         if (getFile().isVideo()) {
 268             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 269             mAutoplay = mVideoPreview.isPlaying();
 270             outState.putInt(PreviewMediaFragment.EXTRA_PLAY_POSITION, mSavedPlaybackPosition);
 271             outState.putBoolean(PreviewMediaFragment.EXTRA_PLAYING, mAutoplay);
 272         }
 273         else {
 274             outState.putInt(
 275                     PreviewMediaFragment.EXTRA_PLAY_POSITION,
 276                     mMediaServiceBinder.getCurrentPosition());
 277             outState.putBoolean(
 278                     PreviewMediaFragment.EXTRA_PLAYING, mMediaServiceBinder.isPlaying());
 279         }
 280     }
 281
 282
 283     @Override
 284     public void onStart() {
 285         super.onStart();
 286         Log_OC.e(TAG, "onStart");
 287
 288         OCFile file = getFile();
 289         if (file != null) {
 290             if (file.isAudio()) {
 291                 bindMediaService();
 292
 293             }
 294             else {
 295                 if (file.isVideo()) {
 296                     stopAudio();
 297                     playVideo();
 298                 }
 299             }
 300         }
 301     }
 302
 303
 304     private void stopAudio() {
 305         Intent i = new Intent(getActivity(), MediaService.class);
 306         i.setAction(MediaService.ACTION_STOP_ALL);
 307         getActivity().startService(i);
 308     }
 309
 310
 311     /**
 312      * {@inheritDoc}
 313      */
 314     @Override
 315     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 316         super.onCreateOptionsMenu(menu, inflater);
 317         inflater.inflate(R.menu.file_actions_menu, menu);
 318     }
 319
 320
 321     /**
 322      * {@inheritDoc}
 323      */
 324     @Override
 325     public void onPrepareOptionsMenu(Menu menu) {
 326         super.onPrepareOptionsMenu(menu);
 327
 328         if (mContainerActivity.getStorageManager() != null) {
 329             FileMenuFilter mf = new FileMenuFilter(
 330                 getFile(),
 331                 mContainerActivity.getStorageManager().getAccount(),
 332                 mContainerActivity,
 333                 getActivity()
 334             );
 335             mf.filter(menu);
 336         }
 337
 338         // additional restriction for this fragment
 339         // TODO allow renaming in PreviewImageFragment
 340         MenuItem item = menu.findItem(R.id.action_rename_file);
 341         if (item != null) {
 342             item.setVisible(false);
 343             item.setEnabled(false);
 344         }
 345
 346         // additional restriction for this fragment
 347         item = menu.findItem(R.id.action_move);
 348         if (item != null) {
 349             item.setVisible(false);
 350             item.setEnabled(false);
 351         }
 352
 353         // additional restriction for this fragment
 354         item = menu.findItem(R.id.action_copy);
 355         if (item != null) {
 356             item.setVisible(false);
 357             item.setEnabled(false);
 358         }
 359     }
 360
 361
 362     /**
 363      * {@inheritDoc}
 364      */
 365     @Override
 366     public boolean onOptionsItemSelected(MenuItem item) {
 367         switch (item.getItemId()) {
 368             case R.id.action_share_file: {
 369                 stopPreview(false);
 370                 mContainerActivity.getFileOperationsHelper().shareFileWithLink(getFile());
 371                 return true;
 372             }
 373             case R.id.action_unshare_file: {
 374                 stopPreview(false);
 375                 mContainerActivity.getFileOperationsHelper().unshareFileWithLink(getFile());
 376                 return true;
 377             }
 378             case R.id.action_open_file_with: {
 379                 openFile();
 380                 return true;
 381             }
 382             case R.id.action_remove_file: {
 383                 RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(getFile());
 384                 dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
 385                 return true;
 386             }
 387             case R.id.action_see_details: {
 388                 seeDetails();
 389                 return true;
 390             }
 391             case R.id.action_send_file: {
 392                 sendFile();
 393                 return true;
 394             }
 395             case R.id.action_sync_file: {
 396                 mContainerActivity.getFileOperationsHelper().syncFile(getFile());
 397                 return true;
 398             }
 399             case R.id.action_favorite_file:{
 400                 mContainerActivity.getFileOperationsHelper().toggleFavorite(getFile(), true);
 401                 return true;
 402             }
 403             case R.id.action_unfavorite_file:{
 404                 mContainerActivity.getFileOperationsHelper().toggleFavorite(getFile(), false);
 405                 return true;
 406             }
 407             default:
 408                 return false;
 409         }
 410     }
 411
 412
 413     /**
 414      * Update the file of the fragment with file value
 415      *
 416      * @param file
 417      */
 418     public void updateFile(OCFile file) {
 419         setFile(file);
 420     }
 421
 422     private void sendFile() {
 423         stopPreview(false);
 424         mContainerActivity.getFileOperationsHelper().sendDownloadedFile(getFile());
 425
 426     }
 427
 428     private void seeDetails() {
 429         stopPreview(false);
 430         mContainerActivity.showDetails(getFile());
 431     }
 432
 433
 434     private void prepareVideo() {
 435         // create helper to get more control on the playback
 436         mVideoHelper = new VideoHelper();
 437         mVideoPreview.setOnPreparedListener(mVideoHelper);
 438         mVideoPreview.setOnCompletionListener(mVideoHelper);
 439         mVideoPreview.setOnErrorListener(mVideoHelper);
 440     }
 441
 442     @SuppressWarnings("static-access")
 443     private void playVideo() {
 444         // create and prepare control panel for the user
 445         mMediaController.setMediaPlayer(mVideoPreview);
 446
 447         // load the video file in the video player ;
 448         // when done, VideoHelper#onPrepared() will be called
 449         if (getFile().isDown()) {
 450             mUri = getFile().getStoragePath();
 451         } else {
 452             Context context = MainApp.getAppContext();
 453             Account account = mContainerActivity.getStorageManager().getAccount();
 454
 455             mUri = generateUrlWithCredentials(account, context, getFile());
 456         }
 457
 458         mVideoPreview.setVideoPath(mUri);
 459     }
 460
 461     public static String generateUrlWithCredentials(Account account, Context context, OCFile file){
 462         OwnCloudAccount ocAccount = null;
 463         try {
 464             ocAccount = new OwnCloudAccount(account, context);
 465
 466             final ClientGenerationTask task = new ClientGenerationTask();
 467             task.execute(ocAccount);
 468
 469             OwnCloudClient mClient = task.get();
 470             String url = AccountUtils.constructFullURLForAccount(context, account) + Uri.encode(file.getRemotePath(), "/");
 471             OwnCloudCredentials credentials = mClient.getCredentials();
 472
 473             return url.replace("//", "//" + credentials.getUsername() + ":" + credentials.getAuthToken() + "@");
 474
 475         } catch (AccountUtils.AccountNotFoundException e) {
 476             e.printStackTrace();
 477
 478         } catch (InterruptedException e) {
 479             e.printStackTrace();
 480         } catch (ExecutionException e) {
 481             e.printStackTrace();
 482         }
 483         return "";
 484     }
 485
 486     public static class ClientGenerationTask extends AsyncTask<Object, Void, OwnCloudClient> {
 487         @Override
 488         protected OwnCloudClient doInBackground(Object... params) {
 489             Object account = params[0];
 490             if (account instanceof OwnCloudAccount){
 491                 try {
 492                     OwnCloudAccount ocAccount = (OwnCloudAccount) account;
 493                     return OwnCloudClientManagerFactory.getDefaultSingleton().
 494                             getClientFor(ocAccount, MainApp.getAppContext());
 495                 } catch (AccountUtils.AccountNotFoundException e) {
 496                     e.printStackTrace();
 497                 } catch (OperationCanceledException e) {
 498                     e.printStackTrace();
 499                 } catch (AuthenticatorException e) {
 500                     e.printStackTrace();
 501                 } catch (IOException e) {
 502                     e.printStackTrace();
 503                 }
 504             }
 505
 506             return null;
 507         }
 508     }
 509
 510
 511     private class VideoHelper implements OnCompletionListener, OnPreparedListener, OnErrorListener {
 512
 513         /**
 514          * Called when the file is ready to be played.
 515          * <p/>
 516          * Just starts the playback.
 517          *
 518          * @param vp {@link MediaPlayer} instance performing the playback.
 519          */
 520         @Override
 521         public void onPrepared(MediaPlayer vp) {
 522             Log_OC.e(TAG, "onPrepared");
 523             mVideoPreview.seekTo(mSavedPlaybackPosition);
 524             if (mAutoplay) {
 525                 mVideoPreview.start();
 526             }
 527             mMediaController.setEnabled(true);
 528             mMediaController.updatePausePlay();
 529             mPrepared = true;
 530         }
 531
 532
 533         /**
 534          * Called when the file is finished playing.
 535          * <p/>
 536          * Finishes the activity.
 537          *
 538          * @param mp {@link MediaPlayer} instance performing the playback.
 539          */
 540         @Override
 541         public void onCompletion(MediaPlayer mp) {
 542             Log_OC.e(TAG, "completed");
 543             if (mp != null) {
 544                 mVideoPreview.seekTo(0);
 545                 // next lines are necessary to work around undesired video loops
 546                 if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD) {
 547                     mVideoPreview.pause();
 548
 549                 } else {
 550                     if (Build.VERSION.SDK_INT == Build.VERSION_CODES.GINGERBREAD_MR1) {
 551                         // mVideePreview.pause() is not enough
 552
 553                         mMediaController.setEnabled(false);
 554                         mVideoPreview.stopPlayback();
 555                         mAutoplay = false;
 556                         mSavedPlaybackPosition = 0;
 557                         mVideoPreview.setVideoPath(getFile().getStoragePath());
 558                     }
 559                 }
 560             } // else : called from onError()
 561             mMediaController.updatePausePlay();
 562         }
 563
 564
 565         /**
 566          * Called when an error in playback occurs.
 567          *
 568          * @param mp    {@link MediaPlayer} instance performing the playback.
 569          * @param what  Type of error
 570          * @param extra Extra code specific to the error
 571          */
 572         @Override
 573         public boolean onError(MediaPlayer mp, int what, int extra) {
 574 //            if (mVideoPreview.getWindowToken() != null) {
 575                 // try to open with another app
 576 //                try{
 577 //                    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
 578 //                    builder.setMessage("May expose password?")
 579 //                            .setPositiveButton("Stream", new DialogInterface.OnClickListener() {
 580 //                                public void onClick(DialogInterface dialog, int id) {
 581 //                                    Intent i = new Intent(android.content.Intent.ACTION_VIEW);
 582 //                                    i.setData(Uri.parse(mUri));
 583 //                                    startActivity(i);
 584 //                                }
 585 //                            })
 586 //                            .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
 587 //                                public void onClick(DialogInterface dialog, int id) {
 588 //                                    // User cancelled the dialog
 589 //                                }
 590 //                            });
 591 //                    builder.show();
 592
 593                 MediaService.streamWithExternalApp(mUri, getActivity()).show();
 594
 595 //                }
 596 //                catch (ActivityNotFoundException e){
 597 //                    Intent i = new Intent(android.content.Intent.ACTION_VIEW);
 598 //                    i.setData(Uri.parse(mUri));
 599 //                    startActivity(i);
 600 //                }
 601 //            }
 602 //            }
 603             return true;
 604
 605         }
 606     }
 607
 608     @Override
 609     public void onPause() {
 610         Log_OC.e(TAG, "onPause");
 611         super.onPause();
 612     }
 613
 614     @Override
 615     public void onResume() {
 616         super.onResume();
 617         Log_OC.e(TAG, "onResume");
 618     }
 619
 620     @Override
 621     public void onDestroy() {
 622         Log_OC.e(TAG, "onDestroy");
 623         super.onDestroy();
 624     }
 625
 626     @Override
 627     public void onStop() {
 628         Log_OC.e(TAG, "onStop");
 629
 630         mPrepared = false;
 631         if (mMediaServiceConnection != null) {
 632             Log_OC.d(TAG, "Unbinding from MediaService ...");
 633             if (mMediaServiceBinder != null && mMediaController != null) {
 634                 mMediaServiceBinder.unregisterMediaController(mMediaController);
 635             }
 636             getActivity().unbindService(mMediaServiceConnection);
 637             mMediaServiceConnection = null;
 638             mMediaServiceBinder = null;
 639         }
 640
 641         super.onStop();
 642     }
 643
 644     @Override
 645     public boolean onTouch(View v, MotionEvent event) {
 646         if (event.getAction() == MotionEvent.ACTION_DOWN && v == mVideoPreview) {
 647             // added a margin on the left to avoid interfering with gesture to open navigation drawer
 648             if (event.getX() / Resources.getSystem().getDisplayMetrics().density > 24.0) {
 649                 startFullScreenVideo();
 650             }
 651             return true;
 652         }
 653         return false;
 654     }
 655
 656
 657     private void startFullScreenVideo() {
 658         Intent i = new Intent(getActivity(), PreviewVideoActivity.class);
 659         i.putExtra(FileActivity.EXTRA_ACCOUNT, mAccount);
 660         i.putExtra(FileActivity.EXTRA_FILE, getFile());
 661         i.putExtra(PreviewVideoActivity.EXTRA_AUTOPLAY, mVideoPreview.isPlaying());
 662         mVideoPreview.pause();
 663         i.putExtra(PreviewVideoActivity.EXTRA_START_POSITION, mVideoPreview.getCurrentPosition());
 664         startActivityForResult(i, 0);
 665     }
 666
 667     @Override
 668     public void onConfigurationChanged(Configuration newConfig) {
 669         Log_OC.e(TAG, "onConfigurationChanged " + this);
 670     }
 671
 672     @Override
 673     public void onActivityResult(int requestCode, int resultCode, Intent data) {
 674         Log_OC.e(TAG, "onActivityResult " + this);
 675         super.onActivityResult(requestCode, resultCode, data);
 676         if (resultCode == Activity.RESULT_OK) {
 677             mSavedPlaybackPosition = data.getExtras().getInt(
 678                     PreviewVideoActivity.EXTRA_START_POSITION);
 679             mAutoplay = data.getExtras().getBoolean(PreviewVideoActivity.EXTRA_AUTOPLAY);
 680         }
 681     }
 682
 683
 684     private void playAudio() {
 685         OCFile file = getFile();
 686         if (!mMediaServiceBinder.isPlaying(file)) {
 687             Log_OC.d(TAG, "starting playback of " + file.getStoragePath());
 688             mMediaServiceBinder.start(mAccount, file, mAutoplay, mSavedPlaybackPosition);
 689
 690         }
 691         else {
 692             if (!mMediaServiceBinder.isPlaying() && mAutoplay) {
 693                 mMediaServiceBinder.start();
 694                 mMediaController.updatePausePlay();
 695             }
 696         }
 697     }
 698
 699
 700     private void bindMediaService() {
 701         Log_OC.d(TAG, "Binding to MediaService...");
 702         if (mMediaServiceConnection == null) {
 703             mMediaServiceConnection = new MediaServiceConnection();
 704         }
 705         getActivity().bindService(  new Intent(getActivity(),
 706                                     MediaService.class),
 707                                     mMediaServiceConnection,
 708                                     Context.BIND_AUTO_CREATE);
 709             // follow the flow in MediaServiceConnection#onServiceConnected(...)
 710     }
 711
 712     /** Defines callbacks for service binding, passed to bindService() */
 713     private class MediaServiceConnection implements ServiceConnection {
 714
 715         @Override
 716         public void onServiceConnected(ComponentName component, IBinder service) {
 717             if (getActivity() != null) {
 718                 if (component.equals(
 719                         new ComponentName(getActivity(), MediaService.class))) {
 720                     Log_OC.d(TAG, "Media service connected");
 721                     mMediaServiceBinder = (MediaServiceBinder) service;
 722                     if (mMediaServiceBinder != null) {
 723                         prepareMediaController();
 724                         playAudio();    // do not wait for the touch of nobody to play audio
 725
 726                         Log_OC.d(TAG, "Successfully bound to MediaService, MediaController ready");
 727
 728                     }
 729                     else {
 730                         Log_OC.e(TAG, "Unexpected response from MediaService while binding");
 731                     }
 732                 }
 733             }
 734         }
 735
 736         private void prepareMediaController() {
 737             mMediaServiceBinder.registerMediaController(mMediaController);
 738             if (mMediaController != null) {
 739                 mMediaController.setMediaPlayer(mMediaServiceBinder);
 740                 mMediaController.setEnabled(true);
 741                 mMediaController.updatePausePlay();
 742             }
 743         }
 744
 745         @Override
 746         public void onServiceDisconnected(ComponentName component) {
 747             if (component.equals(new ComponentName(getActivity(), MediaService.class))) {
 748                 Log_OC.e(TAG, "Media service suddenly disconnected");
 749                 if (mMediaController != null) {
 750                     mMediaController.setMediaPlayer(null);
 751                 }
 752                 else {
 753                     Toast.makeText(
 754                             getActivity(),
 755                             "No media controller to release when disconnected from media service",
 756                             Toast.LENGTH_SHORT).show();
 757                 }
 758                 mMediaServiceBinder = null;
 759                 mMediaServiceConnection = null;
 760             }
 761         }
 762     }
 763
 764
 765     /**
 766      * Opens the previewed file with an external application.
 767      */
 768     private void openFile() {
 769         stopPreview(true);
 770         mContainerActivity.getFileOperationsHelper().openFile(getFile());
 771         finish();
 772     }
 773
 774     /**
 775      * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewMediaFragment}
 776      * to be previewed.
 777      *
 778      * @param file File to test if can be previewed.
 779      * @return 'True' if the file can be handled by the fragment.
 780      */
 781     public static boolean canBePreviewed(OCFile file) {
 782         return (file != null && (file.isAudio() || file.isVideo()));
 783     }
 784
 785
 786     public void stopPreview(boolean stopAudio) {
 787         OCFile file = getFile();
 788         if (file.isAudio() && stopAudio) {
 789             mMediaServiceBinder.pause();
 790
 791         }
 792         else {
 793             if (file.isVideo()) {
 794                 mVideoPreview.stopPlayback();
 795             }
 796         }
 797     }
 798
 799
 800     /**
 801      * Finishes the preview
 802      */
 803     private void finish() {
 804         getActivity().onBackPressed();
 805     }
 806
 807
 808     public int getPosition() {
 809         if (mPrepared) {
 810             mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
 811         }
 812         Log_OC.e(TAG, "getting position: " + mSavedPlaybackPosition);
 813         return mSavedPlaybackPosition;
 814     }
 815
 816     public boolean isPlaying() {
 817         if (mPrepared) {
 818             mAutoplay = mVideoPreview.isPlaying();
 819         }
 820         return mAutoplay;
 821     }
 822
 823 }