@@ -241,7 +241,7 @@ protected enum MenuItemAddRemove {
241241
242242 protected MenuItemAddRemove menuItemAddRemoveValue = MenuItemAddRemove .ADD_GRID_AND_SORT_WITH_SEARCH ;
243243
244- private List <MenuItem > mOriginalMenuItems = new ArrayList <>();
244+ private final List <MenuItem > mOriginalMenuItems = new ArrayList <>();
245245
246246 private static OCFileDepth fileDepth = OCFileDepth .Root ;
247247
@@ -311,14 +311,14 @@ public void onAttach(@NonNull Context context) {
311311 try {
312312 mContainerActivity = (FileFragment .ContainerActivity ) context ;
313313 } catch (ClassCastException e ) {
314- throw new IllegalArgumentException (context . toString () + " must implement " +
314+ throw new IllegalArgumentException (context + " must implement " +
315315 FileFragment .ContainerActivity .class .getSimpleName (), e );
316316 }
317317 try {
318318 setOnRefreshListener ((OnEnforceableRefreshListener ) context );
319319
320320 } catch (ClassCastException e ) {
321- throw new IllegalArgumentException (context . toString () + " must implement " +
321+ throw new IllegalArgumentException (context + " must implement " +
322322 OnEnforceableRefreshListener .class .getSimpleName (), e );
323323 }
324324 }
@@ -577,7 +577,7 @@ public void uploadFromApp() {
577577 action = action .setType ("*/*" ).addCategory (Intent .CATEGORY_OPENABLE );
578578 action .putExtra (Intent .EXTRA_ALLOW_MULTIPLE , true );
579579
580- getActivity ().startActivityForResult (
580+ requireActivity ().startActivityForResult (
581581 Intent .createChooser (action , getString (R .string .upload_chooser_title )),
582582 FileDisplayActivity .REQUEST_CODE__SELECT_CONTENT_FROM_APPS
583583 );
@@ -767,8 +767,9 @@ public void onHeaderClicked() {
767767 }
768768
769769 @ Override
770- public void showTemplate (@ NonNull Creator creator , @ NonNull String headline ) {
771- ChooseTemplateDialogFragment .newInstance (mFile , creator , headline ).show (requireActivity ().getSupportFragmentManager (),
770+ public void showTemplate (Creator creator , String headline ) {
771+ ChooseTemplateDialogFragment .newInstance (mFile , creator , headline ).show (requireActivity ()
772+ .getSupportFragmentManager (),
772773 DIALOG_CREATE_DOCUMENT );
773774 }
774775
@@ -910,7 +911,9 @@ public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
910911 final int checkedCount = checkedFiles .size ();
911912
912913 if (mActiveActionMode != null ) {
913- String title = getResources ().getQuantityString (R .plurals .items_selected_count , checkedCount , checkedCount );
914+ String title = getResources ().getQuantityString (R .plurals .items_selected_count ,
915+ checkedCount ,
916+ checkedCount );
914917 mActiveActionMode .setTitle (title );
915918 }
916919
@@ -984,7 +987,7 @@ protected void setChoiceModeAsMultipleModal(Bundle savedInstanceState) {
984987 if (savedInstanceState != null ) {
985988 mMultiChoiceModeListener .loadStateFrom (savedInstanceState );
986989 }
987- ((FileActivity ) getActivity ()).addDrawerListener (mMultiChoiceModeListener );
990+ ((FileActivity ) requireActivity ()).addDrawerListener (mMultiChoiceModeListener );
988991 }
989992
990993 /**
@@ -1132,7 +1135,9 @@ public boolean onLongItemClicked(OCFile file) {
11321135
11331136 private void folderOnItemClick (OCFile file , int position ) {
11341137 if (requireActivity () instanceof FolderPickerActivity fpa ) {
1135- String filenameErrorMessage = FileNameValidator .INSTANCE .checkFileName (file .getFileName (), getCapabilities (), requireContext ());
1138+ String filenameErrorMessage = FileNameValidator .INSTANCE .checkFileName (file .getFileName (),
1139+ getCapabilities (),
1140+ requireContext ());
11361141 if (filenameErrorMessage != null ) {
11371142 DisplayUtils .showSnackMessage (fpa , filenameErrorMessage );
11381143 return ;
@@ -1329,7 +1334,7 @@ public boolean onFileActionChosen(@IdRes final int itemId, Set<OCFile> checkedFi
13291334 return true ;
13301335 } else if (itemId == R .id .action_rename_file ) {
13311336 RenameFileDialogFragment dialog = RenameFileDialogFragment .newInstance (singleFile , mFile );
1332- dialog .show (getFragmentManager (), FileDetailFragment .FTAG_RENAME_FILE );
1337+ dialog .show (requireFragmentManager (), FileDetailFragment .FTAG_RENAME_FILE );
13331338 return true ;
13341339 } else if (itemId == R .id .action_see_details ) {
13351340 if (mActiveActionMode != null ) {
@@ -1368,7 +1373,7 @@ public boolean onFileActionChosen(@IdRes final int itemId, Set<OCFile> checkedFi
13681373 if (itemId == R .id .action_remove_file ) {
13691374 RemoveFilesDialogFragment dialog =
13701375 RemoveFilesDialogFragment .newInstance (new ArrayList <>(checkedFiles ), mActiveActionMode );
1371- dialog .show (getFragmentManager (), ConfirmationDialogFragment .FTAG_CONFIRMATION );
1376+ dialog .show (requireFragmentManager (), ConfirmationDialogFragment .FTAG_CONFIRMATION );
13721377 return true ;
13731378 } else if (itemId == R .id .action_download_file || itemId == R .id .action_sync_file ) {
13741379 syncAndCheckFiles (checkedFiles );
@@ -1462,7 +1467,7 @@ private void pickFolderForMoveOrCopy(final Set<OCFile> checkedFiles) {
14621467 action .putExtra (FolderPickerActivity .EXTRA_FOLDER , getCurrentFile ());
14631468 action .addFlags (Intent .FLAG_ACTIVITY_NO_ANIMATION ); // No animation since we stay in the same folder
14641469 action .putExtra (FolderPickerActivity .EXTRA_ACTION , extraAction );
1465- getActivity ().startActivityForResult (action , requestCode );
1470+ requireActivity ().startActivityForResult (action , requestCode );
14661471 }
14671472
14681473
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