Back to project page Notepad.
The source code is released under:
Apache License
If you think the Android project Notepad listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
/* Copyright 2014 Braden Farmer *//from ww w .j a v a 2 s . c o m * Licensed 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.farmerbb.notepad; import android.app.Activity; import android.app.Fragment; import android.app.FragmentTransaction; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.os.Build; import android.os.Bundle; import android.view.ActionMode; import android.view.KeyEvent; 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.AbsListView.MultiChoiceModeListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.melnykov.fab.FloatingActionButton; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; public class NoteListFragment extends Fragment { String sortBy; // Receiver used to refresh list of notes (in tablet layout) public class ListNotesReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { listNotes(); } } IntentFilter filter = new IntentFilter("com.farmerbb.notepad.LIST_NOTES"); ListNotesReceiver receiver = new ListNotesReceiver(); /* The activity that creates an instance of this fragment must * implement this interface in order to receive event call backs. */ public interface Listener { public void viewNote(String filename); public String getCabString(int size); public void exportNote(Object[] filesToExport); public void deleteNote(Object[] filesToDelete); public String loadNoteTitle(String filename) throws IOException; public void showFab(); public void hideFab(); } // Use this instance of the interface to deliver action events Listener listener; // Override the Fragment.onAttach() method to instantiate the Listener @Override public void onAttach(Activity activity) { super.onAttach(activity); // Verify that the host activity implements the callback interface try { // Instantiate the Listener so we can send events to the host listener = (Listener) activity; } catch (ClassCastException e) { // The activity doesn't implement the interface, throw exception throw new ClassCastException(activity.toString() + " must implement Listener"); } } public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_note_list, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // Set values setRetainInstance(true); setHasOptionsMenu(true); } @Override public void onResume() { super.onResume(); // Before we do anything else, check for a saved draft; if one exists, load it SharedPreferences prefMain = getActivity().getPreferences(Context.MODE_PRIVATE); if(getId() == R.id.noteViewEdit && prefMain.getLong("draft-name", 0) != 0) { Bundle bundle = new Bundle(); bundle.putString("filename", "draft"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager() .beginTransaction() .replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN) .commit(); } else { if(getId() == R.id.noteViewEdit) { // Change window title getActivity().setTitle(getResources().getString(R.string.app_name)); // Don't show the Up button in the action bar, and disable the button getActivity().getActionBar().setDisplayHomeAsUpEnabled(false); getActivity().getActionBar().setHomeButtonEnabled(false); } // Read preferences SharedPreferences pref = getActivity().getSharedPreferences(getActivity().getPackageName() + "_preferences", Context.MODE_PRIVATE); sortBy = pref.getString("sort_by", "date"); // Refresh list of notes onResume (instead of onCreate) to reflect additions/deletions and preference changes listNotes(); } } // Register and unregister ListNotesReceiver (for tablet layout) @Override public void onStart() { super.onStart(); getActivity().registerReceiver(receiver, filter); // Floating action button FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity().findViewById(R.id.button_floating_action); floatingActionButton.hide(false); SharedPreferences prefMain = getActivity().getPreferences(Context.MODE_PRIVATE); if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && getId() == R.id.noteViewEdit && prefMain.getLong("draft-name", 0) == 0) { floatingActionButton.show(); floatingActionButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { hideFab(); Bundle bundle = new Bundle(); bundle.putString("filename", "new"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager() .beginTransaction() .replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN) .commit(); } }); } } @Override public void onStop() { super.onStop(); getActivity().unregisterReceiver(receiver); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { if(getId() == R.id.noteViewEdit) inflater.inflate(R.menu.main, menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { // New button case R.id.action_new: Bundle bundle = new Bundle(); bundle.putString("filename", "new"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager() .beginTransaction() .replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN) .commit(); return true; // Settings button case R.id.action_settings: Intent intentSettings = new Intent (getActivity(), SettingsActivity.class); startActivity(intentSettings); return true; default: return super.onOptionsItemSelected(item); } } // Returns list of filenames in /data/data/com.farmerbb.notepad/files/ private static String[] getListOfNotes(File file) { return file.list(); } // Returns an integer with number of files in /data/data/com.farmerbb.notepad/files/ private static int getNumOfFiles(File file){ return new File(file.getPath()).list().length; } private void listNotes() { // Get number of files int numOfFiles = getNumOfFiles(getActivity().getFilesDir()); // Get array of file names String[] listOfFiles = getListOfNotes(getActivity().getFilesDir()); // Newer Samsung devices (Galaxy S5, Galaxy Note 4) like to save junk files inside the app's internal storage. // Delete them so that they don't cause problems with lists for(int i = 0; i < numOfFiles; i++) { File file = new File(getActivity().getFilesDir() + File.separator + listOfFiles[i]); if(listOfFiles[i].contains("rList")) file.delete(); listOfFiles[i] = ""; } // Declare ListView final ListView listView = (ListView) getActivity().findViewById(R.id.listView1); // Refresh number of files numOfFiles = getNumOfFiles(getActivity().getFilesDir()); // Create arrays of note lists String[] listOfNotesByDate = getListOfNotes(getActivity().getFilesDir()); String[] listOfNotesByName = new String[numOfFiles]; String[] listOfTitlesByDate = new String[numOfFiles]; String[] listOfTitlesByName = new String[numOfFiles]; ArrayList<String> list = new ArrayList<String>(numOfFiles); // If sort-by is "by date", sort in reverse order if(sortBy.equals("date")) Arrays.sort(listOfNotesByDate, Collections.reverseOrder()); // Get array of first lines of each note for(int i = 0; i < numOfFiles; i++) { try { listOfTitlesByDate[i] = listener.loadNoteTitle(listOfNotesByDate[i]); } catch (IOException e) { showToast(R.string.error_loading_list); } } // If sort-by is "by name", sort alphabetically if(sortBy.equals("name")) { // Copy titles array System.arraycopy(listOfTitlesByDate, 0, listOfTitlesByName, 0, numOfFiles); // Sort titles Arrays.sort(listOfTitlesByName); // Initialize notes array for(int i = 0; i < numOfFiles; i++) listOfNotesByName[i] = "new"; // Copy filenames array with new sort order of titles and nullify date arrays for(int i = 0; i < numOfFiles; i++) { for(int j = 0; j < numOfFiles; j++) { if(listOfTitlesByName[i].equals(listOfTitlesByDate[j]) && listOfNotesByName[i].equals("new")) { listOfNotesByName[i] = listOfNotesByDate[j]; listOfNotesByDate[j] = ""; listOfTitlesByDate[j] = ""; } } } // Populate ArrayList with notes, showing name as first line of the notes list.addAll(Arrays.asList(listOfTitlesByName)); } else if(sortBy.equals("date")) list.addAll(Arrays.asList(listOfTitlesByDate)); // Create the custom adapter to bind the array to the ListView final NoteListAdapter adapter = new NoteListAdapter(getActivity(), list); // Display the ListView listView.setAdapter(adapter); // Finalize arrays to prepare for handling clicked items final String[] finalListByDate = listOfNotesByDate; final String[] finalListByName = listOfNotesByName; // Make ListView handle clicked items listView.setClickable(true); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { if(sortBy.equals("date")) listener.viewNote(finalListByDate[position]); if(sortBy.equals("name")) listener.viewNote(finalListByName[position]); } }); // Make ListView handle contextual action bar final ArrayList<String> cab = new ArrayList<String>(numOfFiles); listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL); listView.setMultiChoiceModeListener(new MultiChoiceModeListener() { @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { // Respond to clicks on the actions in the CAB switch (item.getItemId()) { case R.id.action_export: mode.finish(); // Action picked, so close the CAB listener.exportNote(cab.toArray()); return true; case R.id.action_delete: mode.finish(); // Action picked, so close the CAB listener.deleteNote(cab.toArray()); return true; default: return false; } } @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) listener.hideFab(); // Inflate the menu for the CAB MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.context_menu, menu); return true; } @Override public void onDestroyActionMode(ActionMode mode) { if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) listener.showFab(); } @Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { // Add/remove filenames to cab array as they are checked/unchecked if(checked) { if(sortBy.equals("date")) cab.add(finalListByDate[position]); if(sortBy.equals("name")) cab.add(finalListByName[position]); } else { if(sortBy.equals("date")) cab.remove(finalListByDate[position]); if(sortBy.equals("name")) cab.remove(finalListByName[position]); } // Update the title in CAB if(cab.size() == 0) mode.setTitle(""); else mode.setTitle(cab.size() + " " + listener.getCabString(cab.size())); } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { // Clear any old values from cab array cab.clear(); return false; } }); // If there are no saved notes, then display the empty view if(numOfFiles == 0) { TextView empty = (TextView) getActivity().findViewById(R.id.empty); listView.setEmptyView(empty); } } // Method used to generate toast notifications private void showToast(int message) { Toast toast = Toast.makeText(getActivity(), getResources().getString(message), Toast.LENGTH_SHORT); toast.show(); } public void dispatchKeyShortcutEvent(int keyCode) { if(getId() == R.id.noteViewEdit) { switch(keyCode) { // CTRL+N: New Note case KeyEvent.KEYCODE_N: if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) hideFab(); Bundle bundle = new Bundle(); bundle.putString("filename", "new"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager() .beginTransaction() .replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN) .commit(); break; } } } public void onBackPressed() { getActivity().finish(); } public void showFab() { FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity().findViewById(R.id.button_floating_action); floatingActionButton.show(); } public void hideFab() { FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity().findViewById(R.id.button_floating_action); floatingActionButton.hide(); } }