Java tutorial
/* * Copyright (C) 2015 Federico Iosue (federico.iosue@gmail.com) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.dycody.android.idealnote; import android.app.DatePickerDialog.OnDateSetListener; import android.app.TimePickerDialog.OnTimeSetListener; import android.content.Intent; import android.content.pm.ActivityInfo; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.MenuItem; import android.view.ViewGroup; import android.widget.DatePicker; import android.widget.TimePicker; import android.widget.Toast; import com.dycody.android.idealnote.async.bus.PasswordRemovedEvent; import com.dycody.android.idealnote.utils.SystemHelper; import butterknife.Bind; import butterknife.ButterKnife; import de.greenrobot.event.EventBus; import de.keyboardsurfer.android.widget.crouton.Crouton; import de.keyboardsurfer.android.widget.crouton.Style; import edu.emory.mathcs.backport.java.util.Arrays; import com.dycody.android.idealnote.async.UpdaterTask; import com.dycody.android.idealnote.async.bus.SwitchFragmentEvent; import com.dycody.android.idealnote.async.notes.NoteProcessorDelete; import com.dycody.android.idealnote.db.DbHelper; import com.dycody.android.idealnote.intro.IntroActivity; import com.dycody.android.idealnote.models.Attachment; import com.dycody.android.idealnote.models.Category; import com.dycody.android.idealnote.models.Note; import com.dycody.android.idealnote.utils.Constants; import com.dycody.android.idealnote.utils.PasswordHelper; import java.util.ArrayList; import java.util.HashMap; public class MainActivity extends BaseActivity implements OnDateSetListener, OnTimeSetListener { @Bind(R.id.crouton_handle) ViewGroup croutonViewContainer; @Bind(R.id.toolbar) Toolbar toolbar; @Bind(R.id.drawer_layout) DrawerLayout drawerLayout; public final String FRAGMENT_DRAWER_TAG = "fragment_drawer"; public final String FRAGMENT_LIST_TAG = "fragment_list"; public final String FRAGMENT_DETAIL_TAG = "fragment_detail"; public final String FRAGMENT_SKETCH_TAG = "fragment_sketch"; private FragmentManager mFragmentManager; public Uri sketchUri; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setTheme(R.style.IdealNoteTheme_ApiSpec); setContentView(R.layout.activity_main); ButterKnife.bind(this); EventBus.getDefault().register(this); // This method starts the bootstrap chain. checkPassword(); initUI(); if (IntroActivity.mustRun()) { startActivity(new Intent(this.getApplicationContext(), IntroActivity.class)); } new UpdaterTask(this).execute(); } @Override protected void onStop() { super.onStop(); EventBus.getDefault().unregister(this); } private void initUI() { setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setHomeButtonEnabled(true); } private void checkPassword() { if (prefs.getString(Constants.PREF_PASSWORD, null) != null && prefs.getBoolean("settings_password_access", false)) { PasswordHelper.requestPassword(this, passwordConfirmed -> { if (passwordConfirmed) { init(); } else { finish(); } }); } else { init(); } } public void onEvent(PasswordRemovedEvent passwordRemovedEvent) { init(); } private void init() { mFragmentManager = getSupportFragmentManager(); NavigationDrawerFragment mNavigationDrawerFragment = (NavigationDrawerFragment) mFragmentManager .findFragmentById(R.id.navigation_drawer); if (mNavigationDrawerFragment == null) { FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.navigation_drawer, new NavigationDrawerFragment(), FRAGMENT_DRAWER_TAG) .commit(); } if (mFragmentManager.findFragmentByTag(FRAGMENT_LIST_TAG) == null) { FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction(); fragmentTransaction.add(R.id.fragment_container, new ListFragment(), FRAGMENT_LIST_TAG).commit(); } // Handling of Intent actions handleIntents(); } @Override protected void onNewIntent(Intent intent) { if (intent.getAction() == null) { intent.setAction(Constants.ACTION_START_APP); } setIntent(intent); handleIntents(); Log.d(Constants.TAG, "onNewIntent"); super.onNewIntent(intent); } public MenuItem getSearchMenuItem() { Fragment f = checkFragmentInstance(R.id.fragment_container, ListFragment.class); if (f != null) { return ((ListFragment) f).getSearchMenuItem(); } else { return null; } } public void editTag(Category tag) { Fragment f = checkFragmentInstance(R.id.fragment_container, ListFragment.class); if (f != null) { ((ListFragment) f).editCategory(tag); } } public void initNotesList(Intent intent) { Fragment f = checkFragmentInstance(R.id.fragment_container, ListFragment.class); if (f != null) { ((ListFragment) f).toggleSearchLabel(false); ((ListFragment) f).initNotesList(intent); } } public void commitPending() { Fragment f = checkFragmentInstance(R.id.fragment_container, ListFragment.class); if (f != null) { ((ListFragment) f).commitPending(); } } /** * Checks if allocated fragment is of the required type and then returns it or returns null */ private Fragment checkFragmentInstance(int id, Object instanceClass) { Fragment result = null; if (mFragmentManager != null) { Fragment fragment = mFragmentManager.findFragmentById(id); if (instanceClass.equals(fragment.getClass())) { result = fragment; } } return result; } /* * (non-Javadoc) * @see android.support.v7.app.ActionBarActivity#onBackPressed() * * Overrides the onBackPressed behavior for the attached fragments */ public void onBackPressed() { Fragment f; // SketchFragment f = checkFragmentInstance(R.id.fragment_container, SketchFragment.class); if (f != null) { ((SketchFragment) f).save(); // Removes forced portrait orientation for this fragment setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED); mFragmentManager.popBackStack(); return; } // DetailFragment f = checkFragmentInstance(R.id.fragment_container, DetailFragment.class); if (f != null) { ((DetailFragment) f).goBack = true; ((DetailFragment) f).saveAndExit((DetailFragment) f); return; } // ListFragment f = checkFragmentInstance(R.id.fragment_container, ListFragment.class); if (f != null) { // Before exiting from app the navigation drawer is opened if (prefs.getBoolean("settings_navdrawer_on_exit", false) && getDrawerLayout() != null && !getDrawerLayout().isDrawerOpen(GravityCompat.START)) { getDrawerLayout().openDrawer(GravityCompat.START); } else if (!prefs.getBoolean("settings_navdrawer_on_exit", false) && getDrawerLayout() != null && getDrawerLayout().isDrawerOpen(GravityCompat.START)) { getDrawerLayout().closeDrawer(GravityCompat.START); } else { if (!((ListFragment) f).closeFab()) { super.onBackPressed(); } } return; } super.onBackPressed(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("navigationTmp", navigationTmp); } @Override protected void onPause() { super.onPause(); Crouton.cancelAllCroutons(); } public DrawerLayout getDrawerLayout() { return drawerLayout; } public ActionBarDrawerToggle getDrawerToggle() { if (mFragmentManager != null && mFragmentManager.findFragmentById(R.id.navigation_drawer) != null) { return ((NavigationDrawerFragment) mFragmentManager .findFragmentById(R.id.navigation_drawer)).mDrawerToggle; } else { return null; } } /** * Finishes multiselection mode started by ListFragment */ public void finishActionMode() { ListFragment fragment = (ListFragment) mFragmentManager.findFragmentByTag(FRAGMENT_LIST_TAG); if (fragment != null) { fragment.finishActionMode(); } } Toolbar getToolbar() { return this.toolbar; } private void handleIntents() { Intent i = getIntent(); if (i.getAction() == null) return; if (Constants.ACTION_RESTART_APP.equals(i.getAction())) { SystemHelper.restartApp(getApplicationContext(), MainActivity.class); } if (receivedIntent(i)) { Note note = i.getParcelableExtra(Constants.INTENT_NOTE); if (note == null) { note = DbHelper.getInstance().getNote(i.getIntExtra(Constants.INTENT_KEY, 0)); } // Checks if the same note is already opened to avoid to open again if (note != null && noteAlreadyOpened(note)) { return; } // Empty note instantiation if (note == null) { note = new Note(); } switchToDetail(note); return; } if (Constants.ACTION_SEND_AND_EXIT.equals(i.getAction())) { saveAndExit(i); return; } // Tag search if (Intent.ACTION_VIEW.equals(i.getAction())) { switchToList(); return; } // Home launcher shortcut widget if (Constants.ACTION_SHORTCUT_WIDGET.equals(i.getAction())) { switchToDetail(new Note()); return; } } /** * Used to perform a quick text-only note saving (eg. Tasker+Pushbullet) */ private void saveAndExit(Intent i) { Note note = new Note(); note.setTitle(i.getStringExtra(Intent.EXTRA_SUBJECT)); note.setContent(i.getStringExtra(Intent.EXTRA_TEXT)); DbHelper.getInstance().updateNote(note, true); showToast(getString(R.string.note_updated), Toast.LENGTH_SHORT); finish(); } private boolean receivedIntent(Intent i) { return Constants.ACTION_SHORTCUT.equals(i.getAction()) || Constants.ACTION_NOTIFICATION_CLICK.equals(i.getAction()) || Constants.ACTION_WIDGET.equals(i.getAction()) || Constants.ACTION_TAKE_PHOTO.equals(i.getAction()) || ((Intent.ACTION_SEND.equals(i.getAction()) || Intent.ACTION_SEND_MULTIPLE.equals(i.getAction()) || Constants.INTENT_GOOGLE_NOW.equals(i.getAction())) && i.getType() != null) || i.getAction().contains(Constants.ACTION_NOTIFICATION_CLICK); } private boolean noteAlreadyOpened(Note note) { DetailFragment detailFragment = (DetailFragment) mFragmentManager.findFragmentByTag(FRAGMENT_DETAIL_TAG); return detailFragment != null && detailFragment.getCurrentNote() != null && detailFragment.getCurrentNote().get_id().equals(note.get_id()); } public void switchToList() { FragmentTransaction transaction = mFragmentManager.beginTransaction(); animateTransition(transaction, TRANSITION_HORIZONTAL); ListFragment mListFragment = new ListFragment(); transaction.replace(R.id.fragment_container, mListFragment, FRAGMENT_LIST_TAG) .addToBackStack(FRAGMENT_DETAIL_TAG).commitAllowingStateLoss(); if (getDrawerToggle() != null) { getDrawerToggle().setDrawerIndicatorEnabled(false); } mFragmentManager.getFragments(); EventBus.getDefault().post(new SwitchFragmentEvent(SwitchFragmentEvent.Direction.PARENT)); } public void switchToDetail(Note note) { FragmentTransaction transaction = mFragmentManager.beginTransaction(); animateTransition(transaction, TRANSITION_HORIZONTAL); DetailFragment mDetailFragment = new DetailFragment(); Bundle b = new Bundle(); b.putParcelable(Constants.INTENT_NOTE, note); mDetailFragment.setArguments(b); if (mFragmentManager.findFragmentByTag(FRAGMENT_DETAIL_TAG) == null) { transaction.replace(R.id.fragment_container, mDetailFragment, FRAGMENT_DETAIL_TAG) .addToBackStack(FRAGMENT_LIST_TAG).commitAllowingStateLoss(); } else { transaction.replace(R.id.fragment_container, mDetailFragment, FRAGMENT_DETAIL_TAG) .addToBackStack(FRAGMENT_DETAIL_TAG).commitAllowingStateLoss(); } } /** * Notes sharing */ public void shareNote(Note note) { String titleText = note.getTitle(); String contentText = titleText + System.getProperty("line.separator") + note.getContent(); Intent shareIntent = new Intent(); // Prepare sharing intent with only text if (note.getAttachmentsList().size() == 0) { shareIntent.setAction(Intent.ACTION_SEND); shareIntent.setType("text/plain"); // Intent with single image attachment } else if (note.getAttachmentsList().size() == 1) { shareIntent.setAction(Intent.ACTION_SEND); shareIntent.setType(note.getAttachmentsList().get(0).getMime_type()); shareIntent.putExtra(Intent.EXTRA_STREAM, note.getAttachmentsList().get(0).getUri()); // Intent with multiple images } else if (note.getAttachmentsList().size() > 1) { shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE); ArrayList<Uri> uris = new ArrayList<>(); // A check to decide the mime type of attachments to share is done here HashMap<String, Boolean> mimeTypes = new HashMap<>(); for (Attachment attachment : note.getAttachmentsList()) { uris.add(attachment.getUri()); mimeTypes.put(attachment.getMime_type(), true); } // If many mime types are present a general type is assigned to intent if (mimeTypes.size() > 1) { shareIntent.setType("*/*"); } else { shareIntent.setType((String) mimeTypes.keySet().toArray()[0]); } shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); } shareIntent.putExtra(Intent.EXTRA_SUBJECT, titleText); shareIntent.putExtra(Intent.EXTRA_TEXT, contentText); startActivity(Intent.createChooser(shareIntent, getResources().getString(R.string.share_message_chooser))); } /** * Single note permanent deletion * * @param note Note to be deleted */ public void deleteNote(Note note) { new NoteProcessorDelete(Arrays.asList(new Note[] { note })).process(); notifyAppWidgets(this); Log.d(Constants.TAG, "Deleted permanently note with id '" + note.get_id() + "'"); } public void showMessage(int messageId, Style style) { showMessage(getString(messageId), style); } public void showMessage(String message, Style style) { // ViewGroup used to show Crouton keeping compatibility with the new Toolbar runOnUiThread(() -> Crouton.makeText(this, message, style, croutonViewContainer).show()); } @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { DetailFragment f = (DetailFragment) mFragmentManager.findFragmentByTag(FRAGMENT_DETAIL_TAG); if (f != null && f.isAdded()) { f.onTimeSetListener.onTimeSet(view, hourOfDay, minute); } } @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { DetailFragment f = (DetailFragment) mFragmentManager.findFragmentByTag(FRAGMENT_DETAIL_TAG); if (f != null && f.isAdded() && f.onDateSetListener != null) { f.onDateSetListener.onDateSet(view, year, monthOfYear, dayOfMonth); } } }