Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.doplgangr.secrecy.views; import android.app.Activity; import android.app.AlertDialog; import android.app.NotificationManager; import android.app.ProgressDialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.os.Environment; import android.preference.PreferenceManager; import android.support.v4.app.NotificationCompat; import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.support.v7.view.ActionMode; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.text.InputType; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import android.widget.ViewAnimator; import com.doplgangr.secrecy.Config; import com.doplgangr.secrecy.CustomApp; import com.doplgangr.secrecy.events.AddingFileDoneEvent; import com.doplgangr.secrecy.events.AddingFileEvent; import com.doplgangr.secrecy.events.BackUpDoneEvent; import com.doplgangr.secrecy.events.DecryptingFileDoneEvent; import com.doplgangr.secrecy.events.NewFileEvent; import com.doplgangr.secrecy.exceptions.SecrecyCipherStreamException; import com.doplgangr.secrecy.filesystem.encryption.Vault; import com.doplgangr.secrecy.filesystem.files.EncryptedFile; import com.doplgangr.secrecy.filesystem.Storage; import com.doplgangr.secrecy.jobs.BackupJob; import com.doplgangr.secrecy.jobs.InitializeVaultJob; import com.doplgangr.secrecy.R; import com.doplgangr.secrecy.Util; import com.ipaulpro.afilechooser.FileChooserActivity; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.util.ArrayList; import java.util.Date; import java.util.HashSet; import de.greenrobot.event.EventBus; public class FilesListFragment extends FileViewer { private static final int REQUEST_CODE = 6384; private static final ArrayList<String> INCLUDE_EXTENSIONS_LIST = new ArrayList<>(); private static final int NotificationID = 1820; private RecyclerView recyclerView; private ProgressBar addFilepBar; private TextView mTag; private String vault; private String password; private Vault secret; private FilesListAdapter mAdapter; private FilesListAdapter listAdapter; private FilesListAdapter galleryAdapter; private int decryptCounter = 0; private boolean isGallery = false; private boolean attached = false; //Notifications private NotificationManager mNotifyManager; private NotificationCompat.Builder mBuilder; private ProgressDialog mInitializeDialog; private RecyclerView.LayoutManager linearLayout; private RecyclerView.LayoutManager gridLayout; private ActionMode mActionMode; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.list_file, container, false); addFilepBar = (ProgressBar) view.findViewById(R.id.progressBar); recyclerView = (RecyclerView) view.findViewById(R.id.file_list_recycler_view); mTag = (TextView) view.findViewById(R.id.tag); linearLayout = new LinearLayoutManager(context); recyclerView.setHasFixedSize(true); ActionBar ab = ((ActionBarActivity) getActivity()).getSupportActionBar(); if (ab != null) ab.setTitle(vault); isGallery = PreferenceManager.getDefaultSharedPreferences(context).getBoolean("is_gallery_" + vault, false); mTag.setText(isGallery ? R.string.Page_header__gallery : R.string.Page_header__files); if (isGallery) { mAdapter = galleryAdapter; recyclerView.setLayoutManager(gridLayout); } else { mAdapter = listAdapter; if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("vault_sort", false)) { mAdapter.sort(); } recyclerView.setLayoutManager(linearLayout); } recyclerView.setAdapter(mAdapter); return view; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); Bundle extras = getActivity().getIntent().getExtras(); vault = extras.getString(Config.vault_extra); password = extras.getString(Config.password_extra); if (!EventBus.getDefault().isRegistered(this)) { EventBus.getDefault().register(this); } setRetainInstance(true); context = (ActionBarActivity) getActivity(); if (context == null) { return; } if (context.getSupportActionBar() != null) context.getSupportActionBar().setTitle(vault); gridLayout = new GridLayoutManager(context, 3); listAdapter = new FilesListAdapter(context, false); galleryAdapter = new FilesListAdapter(context, true); mAdapter = listAdapter; if (secret == null) { mInitializeDialog = new ProgressDialog(context); mInitializeDialog.setIndeterminate(true); mInitializeDialog.setMessage(context.getString(R.string.Vault__initializing)); mInitializeDialog.setCancelable(false); mInitializeDialog.show(); CustomApp.jobManager.addJobInBackground(new InitializeVaultJob(vault, password)); } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.filelist, menu); } @Override public void onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); MenuItem item = menu.findItem(R.id.action_switch_interface); item.setIcon(isGallery ? R.drawable.ic_list : R.drawable.ic_gallery); } private final ActionMode.Callback mActionModeCallback = new ActionMode.Callback() { // Called when the action mode is created; startActionMode() was called @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { // Inflate a menu resource providing context menu items MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.file_action, menu); return true; } // Called each time the action mode is shown. Always called after onCreateActionMode, but // may be called multiple times if the mode is invalidated. @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; // Return false if nothing is done } // Called when the user selects a contextual menu item @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { switch (item.getItemId()) { case R.id.action_send: sendRawSelectedItems(); mode.finish(); return true; case R.id.action_decrypt: decryptSelectedItems(); mode.finish(); return true; case R.id.action_delete: deleteSelectedItems(); mode.finish(); return true; case R.id.action_rename: renameSelectedItems(); mode.finish(); return true; case R.id.action_select_all: selectAll(); return true; default: return false; } } // Called when the user exits the action mode @Override public void onDestroyActionMode(ActionMode mode) { mActionMode = null; mAdapter.clearSelected(); } }; void switchView(final View frame, final int showView) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (frame == null) { return; } FilesListAdapter.ViewHolder holder = (FilesListAdapter.ViewHolder) frame.getTag(); ViewAnimator viewAnimator = holder.animator; viewAnimator.setInAnimation(context, R.anim.slide_down); int viewIndex = 0; switch (showView) { case R.id.dataLayout: viewIndex = 0; break; case R.id.DecryptLayout: viewIndex = 1; break; } viewAnimator.setDisplayedChild(viewIndex); viewAnimator.setInAnimation(null); holder.page = viewIndex; } }); } @Override public void onAttach(Activity activity) { super.onAttach(activity); attached = true; } @Override public void onDetach() { super.onDetach(); attached = false; } @Override public void onDestroyView() { super.onDestroyView(); EventBus.getDefault().unregister(mAdapter); EventBus.getDefault().unregister(listAdapter); EventBus.getDefault().unregister(galleryAdapter); EventBus.getDefault().unregister(this); } void addFiles() { new Thread(new Runnable() { @Override public void run() { secret.iterateAllFiles(new Vault.onFileFoundListener() { @Override public void dothis(EncryptedFile encryptedFile) { addToList(encryptedFile); } }); } }).start(); } void updateVaultInBackground(final ProgressDialog progress) { new Thread(new Runnable() { @Override public void run() { try { if (secret.updateFromECBVault(password)) { Util.alert(context, getString(R.string.Vault__vault_updated), getString(R.string.Vault__vault_updated_message), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }, null); } else { secret.ecbUpdateFailed(); Util.alert(context, getString(R.string.Error__updating_vault), getString(R.string.Error__updating_vault_message), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }, null); } } catch (Exception e) { secret.ecbUpdateFailed(); Util.alert(context, getString(R.string.Error__updating_vault), getString(R.string.Error__updating_vault_message), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }, null); } progress.dismiss(); } }).start(); } void setupViews() { getActivity().runOnUiThread(new Runnable() { @Override public void run() { context.supportInvalidateOptionsMenu(); FilesListAdapter.OnItemClickListener onItemClickListener = new FilesListAdapter.OnItemClickListener() { @Override public void onItemClick(final View view, int position) { if (mActionMode != null) { select(position); return; } EncryptedFile encryptedFile = mAdapter.getItem(position); if (isGallery) { Intent intent = new Intent(context, FilePhotoFragment.class); intent.putExtra(Config.gallery_item_extra, position); FilesActivity.onPauseDecision.startActivity(); startActivity(intent); } else { if (!encryptedFile.getIsDecrypting()) { switchView(view, R.id.DecryptLayout); Runnable onFinish = new Runnable() { @Override public void run() { switchView(view, R.id.dataLayout); } }; decrypt(encryptedFile, onFinish); } else Util.toast(context, getString(R.string.Error__already_decrypting), Toast.LENGTH_SHORT); } } }; FilesListAdapter.OnItemLongClickListener onItemLongClickListener = new FilesListAdapter.OnItemLongClickListener() { @Override public boolean onItemLongClick(View view, int position) { if (mActionMode == null) mActionMode = context.startSupportActionMode(mActionModeCallback); // Start the CAB using the ActionMode.Callback defined above select(position); //switchView(view, R.id.file_actions_layout); //mListView.setOnClickListener(null); return true; } }; listAdapter.setOnItemClickListener(onItemClickListener); listAdapter.setOnLongClickListener(onItemLongClickListener); galleryAdapter.setOnItemClickListener(onItemClickListener); galleryAdapter.setOnLongClickListener(onItemLongClickListener); } }); } void addToList(final EncryptedFile encryptedFile) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { listAdapter.add(encryptedFile); galleryAdapter.add(encryptedFile); if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("vault_sort", false)) { listAdapter.sort(); } mAdapter.notifyDataSetChanged(); } }); } @Override void decrypt(final EncryptedFile encryptedFile, final Runnable onFinish) { super.decrypt(encryptedFile, onFinish); } void decrypt_and_save(final int index, final Runnable onFinish) { new Thread(new Runnable() { @Override public void run() { EncryptedFile encryptedFile = mAdapter.getItem(index); File tempFile = getFile(encryptedFile, onFinish); File storedFile = new File(Environment.getExternalStorageDirectory(), encryptedFile.getDecryptedFileName()); if (tempFile == null) { Util.alert(context, CustomApp.context.getString(R.string.Error__decrypting_file), CustomApp.context.getString(R.string.Error__decrypting_file_message), Util.emptyClickListener, null); return; } tempFile.renameTo(storedFile); } }).start(); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_delete_vault: deleteVault(); return true; case R.id.action_change_passphrase: changePassphrase(); return true; case R.id.action_switch_interface: switchInterface(); return true; case R.id.action_backup: backUp(); return true; case R.id.action_add_file: addFile(); return true; case R.id.action_add_folder: createFolder(); return true; default: return super.onOptionsItemSelected(item); } } void switchInterface() { isGallery = !isGallery; SharedPreferences.Editor edit = PreferenceManager.getDefaultSharedPreferences(context).edit(); edit.putBoolean("is_gallery_" + vault, isGallery).commit(); mTag.setText(isGallery ? R.string.Page_header__gallery : R.string.Page_header__files); if (isGallery) { mAdapter = galleryAdapter; recyclerView.setLayoutManager(gridLayout); } else { mAdapter = listAdapter; if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("vault_sort", false)) { mAdapter.sort(); } recyclerView.setLayoutManager(linearLayout); } recyclerView.setAdapter(mAdapter); getActivity().supportInvalidateOptionsMenu(); } void changePassphrase() { final View dialogView = View.inflate(context, R.layout.change_passphrase, null); new AlertDialog.Builder(context).setTitle(getString(R.string.Vault__change_password)).setView(dialogView) .setPositiveButton(R.string.OK, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String oldPassphrase = ((EditText) dialogView.findViewById(R.id.oldPassphrase)).getText() .toString(); String newPassphrase = ((EditText) dialogView.findViewById(R.id.newPassphrase)).getText() .toString(); String confirmNewPassphrase = ((EditText) dialogView.findViewById(R.id.confirmPassphrase)) .getText().toString(); ProgressDialog progressDialog = new ProgressDialog(context); progressDialog.setMessage(CustomApp.context.getString(R.string.Vault__changing_password)); progressDialog.setIndeterminate(true); progressDialog.setCancelable(false); progressDialog.show(); changePassphraseInBackground(oldPassphrase, newPassphrase, confirmNewPassphrase, progressDialog); } }).setNegativeButton(R.string.CANCEL, Util.emptyClickListener).show(); } void createFolder() { final View dialogView = View.inflate(context, R.layout.add_folder, null); new AlertDialog.Builder(context).setTitle(getString(R.string.Vault__create_new_folder)).setView(dialogView) .setPositiveButton(R.string.OK, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String newFolderName = ((EditText) dialogView.findViewById(R.id.folderName)).getText() .toString(); Util.log("Create folder " + newFolderName); } }).setNegativeButton(R.string.CANCEL, Util.emptyClickListener).show(); } void deleteVault() { final EditText passwordView = new EditText(context); passwordView.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD); passwordView.setHint(R.string.Vault__confirm_password_hint); new AlertDialog.Builder(context).setTitle(getString(R.string.Vault__confirm_delete)).setView(passwordView) .setPositiveButton(R.string.OK, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String input = passwordView.getText().toString(); if (password.equals(input)) { secret.delete(); context.finish(); } else { Util.alert(context, CustomApp.context.getString(R.string.Error__delete_password_incorrect), CustomApp.context.getString(R.string.Error__delete_password_incorrect_message), Util.emptyClickListener, null); } } }).setNegativeButton(R.string.CANCEL, Util.emptyClickListener).show(); } void addFile() { // Use the GET_CONTENT intent from the utility class Intent target = com.ipaulpro.afilechooser.utils.FileUtils.createGetContentIntent(); // Create the chooser Intent Intent intent = Intent.createChooser(target, getString(R.string.Dialog_header__pick_file)); try { startActivityForResult(intent, REQUEST_CODE); FilesActivity.onPauseDecision.startActivity(); } catch (ActivityNotFoundException e) { intent = new Intent(context, FileChooserActivity.class); intent.putStringArrayListExtra(FileChooserActivity.EXTRA_FILTER_INCLUDE_EXTENSIONS, INCLUDE_EXTENSIONS_LIST); intent.putExtra(FileChooserActivity.EXTRA_SELECT_FOLDER, false); startActivityForResult(intent, REQUEST_CODE); FilesActivity.onPauseDecision.startActivity(); } } void backUp() { mNotifyManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); mBuilder = new NotificationCompat.Builder(context); mBuilder.setContentTitle(CustomApp.context.getString(R.string.Backup__title)) .setContentText(CustomApp.context.getString(R.string.Backup__in_progress)) .setSmallIcon(R.drawable.ic_stat_alert).setOngoing(true); mBuilder.setProgress(0, 0, true); mNotifyManager.notify(NotificationID, mBuilder.build()); File backupFile = new File(Storage.getRoot(), secret.getName() + new Date().getTime() + ".zip"); try { backupFile.createNewFile(); } catch (IOException e) { e.printStackTrace(); } CustomApp.jobManager.addJobInBackground(new BackupJob(context, new File(secret.getPath()), backupFile)); } void changePassphraseInBackground(final String oldPassphrase, final String newPassphrase, final String confirmNewPassphrase, final ProgressDialog progressDialog) { new Thread(new Runnable() { public void run() { if (newPassphrase.length() == 0) { progressDialog.dismiss(); Util.alert(context, CustomApp.context.getString(R.string.Error__change_password_failed), CustomApp.context.getString(R.string.Error__password_empty_message), Util.emptyClickListener, null); return; } if (!newPassphrase.equals(confirmNewPassphrase)) { progressDialog.dismiss(); Util.alert(context, CustomApp.context.getString(R.string.Error__change_password_failed), CustomApp.context.getString(R.string.Error__password_no_match_message), Util.emptyClickListener, null); return; } if (!secret.changePassphrase(oldPassphrase, newPassphrase)) { progressDialog.dismiss(); Util.alert(context, CustomApp.context.getString(R.string.Error__change_password_failed), CustomApp.context.getString(R.string.Error__change_password_failed_message), Util.emptyClickListener, null); } else { Util.alert(context, CustomApp.context.getString(R.string.Vault__change_password_ok), CustomApp.context.getString(R.string.Vault__change_password_ok_message), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { context.finish(); } }); } progressDialog.dismiss(); } }).start(); } public void onActivityResult(int requestCode, int resultCode, Intent data) { FilesActivity.onPauseDecision.finishActivity(); if (resultCode == Activity.RESULT_OK && requestCode == REQUEST_CODE && data.getData() != null) { Util.log("intent received=", data.getData().toString(), data.getData().getLastPathSegment()); mNotifyManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); mBuilder = new NotificationCompat.Builder(context); mBuilder.setContentTitle(CustomApp.context.getString(R.string.Files__adding)) .setSmallIcon(R.drawable.ic_stat_alert).setOngoing(true); mBuilder.setProgress(0, 0, true); mNotifyManager.notify(NotificationID, mBuilder.build()); addFileInBackground(secret, data.getData()); super.onActivityResult(requestCode, resultCode, data); } else { Util.toast(context, getString(R.string.Error__no_file_selected), 4000); } } public void onEventMainThread(NewFileEvent event) { // Add new file to the list, sort it to its alphabetical position, and highlight // it with smooth scrolling. if ((mAdapter != null) && (attached)) { Util.toast(context, CustomApp.context.getString(R.string.Files__add_successful), Toast.LENGTH_SHORT); addToList(event.encryptedFile); if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean("vault_sort", false)) { mAdapter.sort(); } int index = mAdapter.getItemId(event.encryptedFile); if (index != -1) recyclerView.smoothScrollToPosition(index); } } public void onEventMainThread(Vault vault) { //The vault finishes initializing, is prepared to be populated. secret = vault; if (secret.isEcbVault()) { Util.alert(context, getString(R.string.Error__old_vault_format), getString(R.string.Error__old_vault_format_message), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { Util.alert(context, getString(R.string.Upgrade__backup_beforehand), getString(R.string.Upgrade__backup_beforehand_message), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { backUp(); finish(); } }, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { ProgressDialog progress = new ProgressDialog(context); progress.setMessage(getString(R.string.Vault_updating)); progress.setIndeterminate(true); progress.setCancelable(false); progress.show(); updateVaultInBackground(progress); } }); } }, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }); return; } if (secret.wrongPass) { Util.alert(context, getString(R.string.Error__open_vault), getString(R.string.Error__open_vault_message), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }, null); return; } addFiles(); context.setTitle(secret.getName()); mInitializeDialog.dismiss(); setupViews(); } public void onEventMainThread(BackUpDoneEvent event) { if (!event.backupPath.getAbsolutePath().equals(secret.getPath())) return; if (mBuilder != null) { mBuilder.setProgress(0, 0, false) .setContentText( String.format(CustomApp.context.getString(R.string.Backup__finish), event.backupFile)) .setStyle(new NotificationCompat.BigTextStyle().bigText( //For long long text String.format(CustomApp.context.getString(R.string.Backup__finish), event.backupFile))) .setOngoing(false); mNotifyManager.notify(NotificationID, mBuilder.build()); } } public void onEventMainThread(AddingFileEvent event) { if (event.vaultToAdd != secret) return; if (mBuilder != null) { mBuilder.setContentText(event.fileToAdd); mNotifyManager.notify(NotificationID, mBuilder.build()); } } public void onEventMainThread(AddingFileDoneEvent event) { if (event.vault != secret) return; if (mBuilder != null) { mBuilder.setProgress(0, 0, false) .setContentText(CustomApp.context.getString(R.string.Files__adding_finish)).setOngoing(false); mNotifyManager.notify(NotificationID, mBuilder.build()); } } public void onEventMainThread(DecryptingFileDoneEvent event) { mAdapter.notifyItemChanged(event.index); decryptCounter--; if (decryptCounter == 0 && attached) { Util.toast(context, getString(R.string.Files__save_to_SD), Toast.LENGTH_SHORT); } } void decryptSelectedItems() { for (final Integer index : mAdapter.getSelected()) { decryptCounter++; if (mAdapter.hasIndex(index)) { if (attached) { mAdapter.getItem(index).setIsDecrypting(true); mAdapter.notifyItemChanged(index); decrypt_and_save(index, new Runnable() { @Override public void run() { EventBus.getDefault().post(new DecryptingFileDoneEvent(index)); } }); } } } } void renameSelectedItems() { for (final Integer index : mAdapter.getSelected()) { decryptCounter++; if (mAdapter.hasIndex(index)) { if (attached) { final EditText renameView = new EditText(context); renameView.setText(mAdapter.getItem(index).getDecryptedFileName()); new AlertDialog.Builder(context).setTitle(getString(R.string.File__rename)).setView(renameView) .setPositiveButton(R.string.OK, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String newName = renameView.getText().toString(); try { mAdapter.getItem(index).rename(newName); } catch (SecrecyCipherStreamException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } mAdapter.notifyItemChanged(index); } }).setNegativeButton(R.string.CANCEL, Util.emptyClickListener).show(); } } } } void sendRawSelectedItems() { ArrayList<DecryptArgHolder> Args = new ArrayList<DecryptArgHolder>(); for (final Integer index : mAdapter.getSelected()) { if (mAdapter.hasIndex(index)) { EncryptedFile encryptedFile = mAdapter.getItem(index); final View mView = recyclerView.getChildAt(index); if (!encryptedFile.getIsDecrypting()) { switchView(mView, R.id.DecryptLayout); ProgressBar pBar = mView != null ? (ProgressBar) mView.findViewById(R.id.progressBar) : null; Runnable onFinish = new Runnable() { @Override public void run() { switchView(mView, R.id.dataLayout); } }; Args.add(new DecryptArgHolder(encryptedFile, pBar, onFinish)); } else if (attached) Util.toast(context, getString(R.string.Error__already_decrypting), Toast.LENGTH_SHORT); } } if (attached) sendMultiple(Args); } void selectAll() { mAdapter.clearSelected(); for (int i = 0; i < mAdapter.getItemCount(); i++) { select(i); } } void deleteSelectedItems() { // Hold a local copy of selected values, because action mode is left before // Util.alter runs and thus adapter.getSelected is cleared. final HashSet<Integer> selected = new HashSet<Integer>(mAdapter.getSelected()); String FilesToDelete = "\n"; for (final Integer index : selected) if (mAdapter.hasIndex(index)) FilesToDelete += "- " + mAdapter.getItem(index).getDecryptedFileName() + "\n"; Util.alert(context, getString(R.string.Files__delete), String.format(getString(R.string.Files__delete_message), FilesToDelete), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { for (final Integer index : selected) { if (mAdapter.hasIndex(index)) if (!mAdapter.getItem(index).getIsDecrypting()) { secret.deleteFile(mAdapter.getItem(index)); mAdapter.remove(index); } else if (attached) Util.toast(context, getString(R.string.Error__already_decrypting_delete), Toast.LENGTH_SHORT); } } }, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); } @Override void afterDecrypt(Intent newIntent, Intent altIntent) { if (attached) super.afterDecrypt(newIntent, altIntent); // check if fragment is attached. } void select(int position) { mAdapter.select(position); mAdapter.notifyItemChanged(position); if (mActionMode == null) return; mActionMode .setTitle(String.format(getString(R.string.Files__number_selected), mAdapter.getSelected().size())); MenuItem renameButton = mActionMode.getMenu().findItem(R.id.action_rename); if (mAdapter.getSelected().size() == 1) renameButton.setVisible(true); else renameButton.setVisible(false); if (mAdapter.getSelected().size() == 0) mActionMode.finish(); } class DecryptArgHolder { public final EncryptedFile encryptedFile; public final ProgressBar pBar; public final Runnable onFinish; public DecryptArgHolder(EncryptedFile encryptedFile, ProgressBar pBar, Runnable onFinish) { this.encryptedFile = encryptedFile; this.pBar = pBar; this.onFinish = onFinish; } } public class OnBackPressedUnhandledEvent { public final Activity activity; public OnBackPressedUnhandledEvent(Activity activity) { this.activity = activity; } } }