Java tutorial
/* * Copyright (C) 2012-2015 Dominik Schrmann <dominik@dominikschuermann.de> * Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com> * Copyright (C) 2015 Kai Jiang <jiangkai@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 org.sufficientlysecure.keychain.ui; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentManager.OnBackStackChangedListener; import android.support.v4.app.FragmentTransaction; import android.support.v7.widget.Toolbar; import android.view.View; import com.mikepenz.community_material_typeface_library.CommunityMaterial; import com.mikepenz.fontawesome_typeface_library.FontAwesome; import com.mikepenz.google_material_typeface_library.GoogleMaterial; import com.mikepenz.materialdrawer.Drawer; import com.mikepenz.materialdrawer.DrawerBuilder; import com.mikepenz.materialdrawer.model.DividerDrawerItem; import com.mikepenz.materialdrawer.model.PrimaryDrawerItem; import com.mikepenz.materialdrawer.model.interfaces.IDrawerItem; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.operations.results.OperationResult; import org.sufficientlysecure.keychain.remote.ui.AppsListFragment; import org.sufficientlysecure.keychain.ui.base.BaseSecurityTokenActivity; import org.sufficientlysecure.keychain.util.FabContainer; import org.sufficientlysecure.keychain.util.Preferences; public class MainActivity extends BaseSecurityTokenActivity implements FabContainer, OnBackStackChangedListener { static final int ID_KEYS = 1; static final int ID_ENCRYPT_DECRYPT = 2; static final int ID_APPS = 3; static final int ID_BACKUP = 4; static final int ID_SETTINGS = 5; static final int ID_HELP = 6; // both of these are used for instrumentation testing only public static final String EXTRA_SKIP_FIRST_TIME = "skip_first_time"; public static final String EXTRA_INIT_FRAG = "init_frag"; public Drawer mDrawer; private Toolbar mToolbar; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_activity); mToolbar = (Toolbar) findViewById(R.id.toolbar); mToolbar.setTitle(R.string.app_name); setSupportActionBar(mToolbar); mDrawer = new DrawerBuilder().withActivity(this).withHeader(R.layout.main_drawer_header) .withToolbar(mToolbar) .addDrawerItems( new PrimaryDrawerItem().withName(R.string.nav_keys).withIcon(CommunityMaterial.Icon.cmd_key) .withIdentifier(ID_KEYS).withSelectable(false), new PrimaryDrawerItem().withName(R.string.nav_encrypt_decrypt) .withIcon(FontAwesome.Icon.faw_lock).withIdentifier(ID_ENCRYPT_DECRYPT) .withSelectable(false), new PrimaryDrawerItem().withName(R.string.title_api_registered_apps) .withIcon(CommunityMaterial.Icon.cmd_apps).withIdentifier(ID_APPS) .withSelectable(false), new PrimaryDrawerItem().withName(R.string.nav_backup) .withIcon(CommunityMaterial.Icon.cmd_backup_restore).withIdentifier(ID_BACKUP) .withSelectable(false), new DividerDrawerItem(), new PrimaryDrawerItem().withName(R.string.menu_preferences) .withIcon(GoogleMaterial.Icon.gmd_settings).withIdentifier(ID_SETTINGS) .withSelectable(false), new PrimaryDrawerItem().withName(R.string.menu_help) .withIcon(CommunityMaterial.Icon.cmd_help_circle).withIdentifier(ID_HELP) .withSelectable(false)) .withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() { @Override public boolean onItemClick(View view, int position, IDrawerItem drawerItem) { if (drawerItem != null) { PrimaryDrawerItem item = (PrimaryDrawerItem) drawerItem; Intent intent = null; switch ((int) item.getIdentifier()) { case ID_KEYS: onKeysSelected(); break; case ID_ENCRYPT_DECRYPT: onEnDecryptSelected(); break; case ID_APPS: onAppsSelected(); break; case ID_BACKUP: onBackupSelected(); break; case ID_SETTINGS: intent = new Intent(MainActivity.this, SettingsActivity.class); break; case ID_HELP: intent = new Intent(MainActivity.this, HelpActivity.class); break; } if (intent != null) { MainActivity.this.startActivity(intent); } } return false; } }).withSelectedItem(-1).withSavedInstance(savedInstanceState).build(); // if this is the first time show first time activity Preferences prefs = Preferences.getPreferences(this); if (!getIntent().getBooleanExtra(EXTRA_SKIP_FIRST_TIME, false) && prefs.isFirstTime()) { Intent intent = new Intent(this, CreateKeyActivity.class); intent.putExtra(CreateKeyActivity.EXTRA_FIRST_TIME, true); startActivity(intent); finish(); return; } getSupportFragmentManager().addOnBackStackChangedListener(this); // all further initialization steps are saved as instance state if (savedInstanceState != null) { return; } Intent data = getIntent(); // If we got an EXTRA_RESULT in the intent, show the notification if (data != null && data.hasExtra(OperationResult.EXTRA_RESULT)) { OperationResult result = data.getParcelableExtra(OperationResult.EXTRA_RESULT); result.createNotify(this).show(); } // always initialize keys fragment to the bottom of the backstack onKeysSelected(); if (data != null && data.hasExtra(EXTRA_INIT_FRAG)) { // initialize FragmentLayout with KeyListFragment at first switch (data.getIntExtra(EXTRA_INIT_FRAG, -1)) { case ID_ENCRYPT_DECRYPT: onEnDecryptSelected(); break; case ID_APPS: onAppsSelected(); break; } } } private void setFragment(Fragment fragment, boolean addToBackStack) { FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE); FragmentTransaction ft = fragmentManager.beginTransaction(); ft.replace(R.id.main_fragment_container, fragment); if (addToBackStack) { ft.addToBackStack(null); } ft.commit(); } private void onKeysSelected() { mToolbar.setTitle(R.string.app_name); mDrawer.setSelection(ID_KEYS, false); Fragment frag = new KeyListFragment(); setFragment(frag, false); } private void onEnDecryptSelected() { mToolbar.setTitle(R.string.nav_encrypt_decrypt); mDrawer.setSelection(ID_ENCRYPT_DECRYPT, false); Fragment frag = new EncryptDecryptFragment(); setFragment(frag, true); } private void onAppsSelected() { mToolbar.setTitle(R.string.nav_apps); mDrawer.setSelection(ID_APPS, false); Fragment frag = new AppsListFragment(); setFragment(frag, true); } private void onBackupSelected() { mToolbar.setTitle(R.string.nav_backup); mDrawer.setSelection(ID_BACKUP, false); Fragment frag = new BackupRestoreFragment(); setFragment(frag, true); } @Override protected void onSaveInstanceState(Bundle outState) { // add the values which need to be saved from the drawer to the bundle outState = mDrawer.saveInstanceState(outState); super.onSaveInstanceState(outState); } @Override public void onBackPressed() { // close the drawer first and if the drawer is closed do regular backstack handling if (mDrawer != null && mDrawer.isDrawerOpen()) { mDrawer.closeDrawer(); } else { super.onBackPressed(); } } @Override public void fabMoveUp(int height) { Object fragment = getSupportFragmentManager().findFragmentById(R.id.main_fragment_container); if (fragment instanceof FabContainer) { ((FabContainer) fragment).fabMoveUp(height); } } @Override public void fabRestorePosition() { Object fragment = getSupportFragmentManager().findFragmentById(R.id.main_fragment_container); if (fragment instanceof FabContainer) { ((FabContainer) fragment).fabRestorePosition(); } } @Override public void onBackStackChanged() { FragmentManager fragmentManager = getSupportFragmentManager(); if (fragmentManager == null) { return; } Fragment frag = fragmentManager.findFragmentById(R.id.main_fragment_container); if (frag == null) { return; } // make sure the selected icon is the one shown at this point if (frag instanceof KeyListFragment) { mToolbar.setTitle(R.string.app_name); mDrawer.setSelection(mDrawer.getPosition(ID_KEYS), false); } else if (frag instanceof EncryptDecryptFragment) { mToolbar.setTitle(R.string.nav_encrypt_decrypt); mDrawer.setSelection(mDrawer.getPosition(ID_ENCRYPT_DECRYPT), false); } else if (frag instanceof AppsListFragment) { mToolbar.setTitle(R.string.nav_apps); mDrawer.setSelection(mDrawer.getPosition(ID_APPS), false); } else if (frag instanceof BackupRestoreFragment) { mToolbar.setTitle(R.string.nav_backup); mDrawer.setSelection(mDrawer.getPosition(ID_BACKUP), false); } } }