Fix

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/main/java/com/owncloud/android/ui/preview/FileDownloadFragment.java

@@ -29,6 +29,7 @@ import android.widget.TextView;
 
 import com.nextcloud.client.account.User;
 import com.nextcloud.client.di.Injectable;
+import com.nextcloud.client.jobs.download.FileDownloadHelper;
 import com.nextcloud.utils.extensions.BundleExtensionsKt;
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.OCFile;
@@ -130,11 +131,12 @@ public class FileDownloadFragment extends FileFragment implements OnClickListene
                              Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
 
-        if (savedInstanceState != null) {
+        if (getArguments() != null) {
             if (!mIgnoreFirstSavedState) {
-                setFile(BundleExtensionsKt.getParcelableArgument(savedInstanceState, EXTRA_FILE, OCFile.class));
-                user = BundleExtensionsKt.getParcelableArgument(savedInstanceState, EXTRA_USER, User.class);
-                mError = savedInstanceState.getBoolean(EXTRA_ERROR);
+                setFile(BundleExtensionsKt.getParcelableArgument(requireArguments(), EXTRA_FILE, OCFile.class));
+                user = BundleExtensionsKt.getParcelableArgument(requireArguments(), EXTRA_USER, User.class);
+                mError = requireArguments().getBoolean(EXTRA_ERROR);
+                FileDownloadHelper.Companion.instance().downloadFile(user, getFile());
             }
             else {
                 mIgnoreFirstSavedState = false;
@@ -149,10 +151,9 @@ public class FileDownloadFragment extends FileFragment implements OnClickListene
 
         (mView.findViewById(R.id.cancelBtn)).setOnClickListener(this);
 
-        (mView.findViewById(R.id.fileDownloadLL)).setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                ((PreviewImageActivity) getActivity()).toggleFullScreen();
+        (mView.findViewById(R.id.fileDownloadLL)).setOnClickListener(v -> {
+            if (getActivity() instanceof PreviewImageActivity previewImageActivity) {
+                previewImageActivity.toggleFullScreen();
             }
         });
 
@@ -218,7 +219,7 @@ public class FileDownloadFragment extends FileFragment implements OnClickListene
     public void onClick(View v) {
         if (v.getId() == R.id.cancelBtn) {
             containerActivity.getFileOperationsHelper().cancelTransference(getFile());
-            getActivity().finish();
+            requireActivity().finish();
         } else {
             Log_OC.e(TAG, "Incorrect view clicked!");
         }

app/src/main/java/com/owncloud/android/utils/DisplayUtils.java

@@ -864,8 +864,7 @@ public final class DisplayUtils {
             if (file.getRemoteId() != null && file.isPreviewAvailable()) {
                 // Thumbnail in cache?
                 Bitmap thumbnail = ThumbnailsCacheManager.getBitmapFromDiskCache(
-                    ThumbnailsCacheManager.PREFIX_THUMBNAIL + file.getRemoteId()
-                                                                                );
+                    ThumbnailsCacheManager.PREFIX_THUMBNAIL + file.getRemoteId());
 
                 if (thumbnail != null && !file.isUpdateThumbnailNeeded()) {
                     stopShimmer(shimmerThumbnail, thumbnailView);
@@ -881,83 +880,104 @@ public final class DisplayUtils {
                         }
                     }
                 } else {
-                    // generate new thumbnail
-                    if (ThumbnailsCacheManager.cancelPotentialThumbnailWork(file, thumbnailView)) {
-                        for (ThumbnailsCacheManager.ThumbnailGenerationTask task : asyncTasks) {
-                            if (file.getRemoteId() != null && task.getImageKey() != null &&
-                                file.getRemoteId().equals(task.getImageKey())) {
-                                return;
-                            }
-                        }
-                        try {
-                            final ThumbnailsCacheManager.ThumbnailGenerationTask task =
-                                new ThumbnailsCacheManager.ThumbnailGenerationTask(thumbnailView,
-                                                                                   storageManager,
-                                                                                   user,
-                                                                                   asyncTasks,
-                                                                                   gridView,
-                                                                                   file.getRemoteId());
-                            if (thumbnail == null) {
-                                Drawable drawable = MimeTypeUtil.getFileTypeIcon(file.getMimeType(),
-                                                                                 file.getFileName(),
-                                                                                 context,
-                                                                                 viewThemeUtils);
-                                if (drawable == null) {
-                                    drawable = ResourcesCompat.getDrawable(context.getResources(),
-                                                                           R.drawable.file_image,
-                                                                           null);
-                                }
-                                if (drawable == null) {
-                                    drawable = new ColorDrawable(Color.GRAY);
-                                }
-
-                                int px = ThumbnailsCacheManager.getThumbnailDimension();
-                                thumbnail = BitmapUtils.drawableToBitmap(drawable, px, px);
-                            }
-                            final ThumbnailsCacheManager.AsyncThumbnailDrawable asyncDrawable =
-                                new ThumbnailsCacheManager.AsyncThumbnailDrawable(context.getResources(),
-                                                                                  thumbnail, task);
-
-                            if (shimmerThumbnail != null && shimmerThumbnail.getVisibility() == View.GONE) {
-                                if (gridView) {
-                                    configShimmerGridImageSize(shimmerThumbnail, preferences.getGridColumns());
-                                }
-                                startShimmer(shimmerThumbnail, thumbnailView);
-                            }
-
-                            task.setListener(new ThumbnailsCacheManager.ThumbnailGenerationTask.Listener() {
-                                @Override
-                                public void onSuccess() {
-                                    stopShimmer(shimmerThumbnail, thumbnailView);
-                                }
-
-                                @Override
-                                public void onError() {
-                                    stopShimmer(shimmerThumbnail, thumbnailView);
-                                }
-                            });
-
-                            thumbnailView.setImageDrawable(asyncDrawable);
-                            asyncTasks.add(task);
-                            task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
-                                                   new ThumbnailsCacheManager.ThumbnailGenerationTaskObject(file,
-                                                                                                            file.getRemoteId()));
-                        } catch (IllegalArgumentException e) {
-                            Log_OC.d(TAG, "ThumbnailGenerationTask : " + e.getMessage());
-                        }
-                    }
+                    generateNewThumbnail(file, thumbnailView, user, storageManager, asyncTasks, gridView, context, shimmerThumbnail, preferences, viewThemeUtils);
                 }
 
                 if ("image/png".equalsIgnoreCase(file.getMimeType())) {
                     thumbnailView.setBackgroundColor(context.getResources().getColor(R.color.bg_default));
                 }
             } else {
-                stopShimmer(shimmerThumbnail, thumbnailView);
-                thumbnailView.setImageDrawable(MimeTypeUtil.getFileTypeIcon(file.getMimeType(),
-                                                                            file.getFileName(),
-                                                                            context,
-                                                                            viewThemeUtils));
+                if (file.getRemoteId() != null) {
+                    generateNewThumbnail(file, thumbnailView, user, storageManager, asyncTasks, gridView, context, shimmerThumbnail, preferences, viewThemeUtils);
+                } else {
+                    stopShimmer(shimmerThumbnail, thumbnailView);
+                    thumbnailView.setImageDrawable(MimeTypeUtil.getFileTypeIcon(file.getMimeType(),
+                                                                                file.getFileName(),
+                                                                                context,
+                                                                                viewThemeUtils));
+                }
+            }
+        }
+    }
+
+    private static void generateNewThumbnail(OCFile file,
+                                             ImageView thumbnailView,
+                                             User user,
+                                             FileDataStorageManager storageManager,
+                                             List<ThumbnailsCacheManager.ThumbnailGenerationTask> asyncTasks,
+                                             boolean gridView,
+                                             Context context,
+                                             LoaderImageView shimmerThumbnail,
+                                             AppPreferences preferences,
+                                             ViewThemeUtils viewThemeUtils) {
+        if (!ThumbnailsCacheManager.cancelPotentialThumbnailWork(file, thumbnailView)) {
+            return;
+        }
+
+        Bitmap thumbnail = ThumbnailsCacheManager.getBitmapFromDiskCache(
+            ThumbnailsCacheManager.PREFIX_THUMBNAIL + file.getRemoteId());
+
+        for (ThumbnailsCacheManager.ThumbnailGenerationTask task : asyncTasks) {
+            if (file.getRemoteId() != null && task.getImageKey() != null &&
+                file.getRemoteId().equals(task.getImageKey())) {
+                return;
+            }
+        }
+        try {
+            final ThumbnailsCacheManager.ThumbnailGenerationTask task =
+                new ThumbnailsCacheManager.ThumbnailGenerationTask(thumbnailView,
+                                                                   storageManager,
+                                                                   user,
+                                                                   asyncTasks,
+                                                                   gridView,
+                                                                   file.getRemoteId());
+            if (thumbnail == null) {
+                Drawable drawable = MimeTypeUtil.getFileTypeIcon(file.getMimeType(),
+                                                                 file.getFileName(),
+                                                                 context,
+                                                                 viewThemeUtils);
+                if (drawable == null) {
+                    drawable = ResourcesCompat.getDrawable(context.getResources(),
+                                                           R.drawable.file_image,
+                                                           null);
+                }
+                if (drawable == null) {
+                    drawable = new ColorDrawable(Color.GRAY);
+                }
+
+                int px = ThumbnailsCacheManager.getThumbnailDimension();
+                thumbnail = BitmapUtils.drawableToBitmap(drawable, px, px);
+            }
+            final ThumbnailsCacheManager.AsyncThumbnailDrawable asyncDrawable =
+                new ThumbnailsCacheManager.AsyncThumbnailDrawable(context.getResources(),
+                                                                  thumbnail, task);
+
+            if (shimmerThumbnail != null && shimmerThumbnail.getVisibility() == View.GONE) {
+                if (gridView) {
+                    configShimmerGridImageSize(shimmerThumbnail, preferences.getGridColumns());
+                }
+                startShimmer(shimmerThumbnail, thumbnailView);
             }
+
+            task.setListener(new ThumbnailsCacheManager.ThumbnailGenerationTask.Listener() {
+                @Override
+                public void onSuccess() {
+                    stopShimmer(shimmerThumbnail, thumbnailView);
+                }
+
+                @Override
+                public void onError() {
+                    stopShimmer(shimmerThumbnail, thumbnailView);
+                }
+            });
+
+            thumbnailView.setImageDrawable(asyncDrawable);
+            asyncTasks.add(task);
+            task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
+                                   new ThumbnailsCacheManager.ThumbnailGenerationTaskObject(file,
+                                                                                            file.getRemoteId()));
+        } catch (IllegalArgumentException e) {
+            Log_OC.d(TAG, "ThumbnailGenerationTask : " + e.getMessage());
         }
     }