Java tutorial
/* * Copyright (C) 2015 Fastboot Mobile, LLC. * * 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.oceansky.yellow.app; import android.*; import android.Manifest; import android.app.AlertDialog; import android.app.SearchManager; import android.app.TimePickerDialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.content.res.Configuration; import android.graphics.drawable.ColorDrawable; import android.net.http.HttpResponseCache; import android.os.Bundle; import android.os.Handler; import android.os.RemoteException; import android.os.SystemClock; import android.support.v4.app.ActivityCompat; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v4.content.ContextCompat; import android.support.v4.view.MenuItemCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.MediaRouteActionProvider; import android.support.v7.widget.SearchView; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.TimePicker; import android.widget.Toast; import com.oceansky.yellow.app.fragments.AutomixFragment; import com.oceansky.yellow.app.fragments.HistoryFragment; import com.oceansky.yellow.app.fragments.ListenNowFragment; import com.oceansky.yellow.app.fragments.LyricsFragment; import com.oceansky.yellow.app.fragments.MySongsFragment; import com.oceansky.yellow.app.fragments.NavigationDrawerFragment; import com.oceansky.yellow.app.fragments.PlaybackQueueFragment; import com.oceansky.yellow.app.fragments.PlaylistListFragment; import com.oceansky.yellow.app.fragments.RecognitionFragment; import com.oceansky.yellow.app.ui.PlayingBarView; import com.oceansky.yellow.art.ImageCache; import com.oceansky.yellow.cast.CastModule; import com.oceansky.yellow.framework.PlaybackProxy; import com.oceansky.yellow.framework.PluginsLookup; import com.oceansky.yellow.providers.IMusicProvider; import com.oceansky.yellow.providers.ProviderAggregator; import com.oceansky.yellow.providers.ProviderConnection; import com.oceansky.yellow.utils.Utils; import com.williammora.snackbar.Snackbar; import java.util.List; public class MainActivity extends AppActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks, TimePickerDialog.OnTimeSetListener { private static final String TAG = "MainActivity"; public static final int SECTION_LISTEN_NOW = 1; public static final int SECTION_MY_SONGS = 2; public static final int SECTION_PLAYLISTS = 3; public static final int SECTION_AUTOMIX = 4; public static final int SECTION_RECOGNITION = 5; public static final int SECTION_HISTORY = 6; public static final int SECTION_LYRICS = 7; public static final int SECTION_NOW_PLAYING = 8; public static final int SECTION_DRIVE_MODE = 9; public static final int SECTION_SETTINGS = 10; private static final int PERM_REQUEST_APP_CORE_PERMISSIONS = 129; /** * Fragment managing the behaviors, interactions and presentation of the navigation drawer. */ private NavigationDrawerFragment mNavigationDrawerFragment; /** * Used to store the last screen title. For use in {@link #restoreActionBar()}. */ private CharSequence mTitle; private PlayingBarView mPlayingBarLayout; private CastModule mCastModule; private Handler mHandler; private int mCurrentFragmentIndex = -1; private MenuItem mOfflineMenuItem; private ProviderConnection mConfiguringProvider; private int mOrientation; private Toolbar mToolbar; private SearchView mSearchView; public MainActivity() { mHandler = new Handler(); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (!WelcomeActivity.hasDoneWelcomeWizard(this)) { Intent intent = new Intent(this, WelcomeActivity.class); startActivity(intent); finish(); } else { // Load UI setContentView(R.layout.activity_main); // Ensure we have READ_EXTERNAL_STORAGE for Music database in LocalProvider // Ensure we have WRITE_EXTERNAL_STORAGE for Album arts storage if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, PERM_REQUEST_APP_CORE_PERMISSIONS); } mToolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(mToolbar); mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager() .findFragmentById(R.id.navigation_drawer); if (mTitle == null) { onSectionAttached(mCurrentFragmentIndex); } // Set up the drawer. mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout)); // Setup the playing bar click listener mPlayingBarLayout = (PlayingBarView) findViewById(R.id.playingBarLayout); mPlayingBarLayout.setWrapped(true, false); // Setup Cast button mCastModule = new CastModule(getApplicationContext()); // Look for un-configured plugins in a second mHandler.postDelayed(new Runnable() { @Override public void run() { lookForUnconfiguredProviders(); } }, 1000); } getWindow().getDecorView() .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); } @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case PERM_REQUEST_APP_CORE_PERMISSIONS: { // If request is cancelled, the result arrays are empty. if (!(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)) { // permission denied, boo! Toast.makeText(this, R.string.toast_storage_permission_warning, Toast.LENGTH_LONG).show(); } return; } } } public Toolbar getToolbar() { return mToolbar; } public CharSequence getFragmentTitle() { return mTitle; } private void lookForUnconfiguredProviders() { List<ProviderConnection> providers = PluginsLookup.getDefault().getAvailableProviders(); for (final ProviderConnection conn : providers) { try { if (conn.getBinder() != null && !conn.getBinder().isSetup() && conn.getConfigurationActivity() != null) { notifyUnconfiguredProvider(conn); break; } } catch (Exception e) { Log.e(TAG, "Cannot get " + conn + " status", e); } } } private void notifyUnconfiguredProvider(final ProviderConnection conn) { showSnackBar(getString(R.string.plugin_not_configured_snackbar, conn.getProviderName()), getString(R.string.configure), new Snackbar.ActionClickListener() { @Override public void onActionClicked() { Intent i = new Intent(); i.setClassName(conn.getPackage(), conn.getConfigurationActivity()); try { mConfiguringProvider = conn; startActivity(i); } catch (SecurityException e) { Log.e(TAG, "Cannot start: Is your activity not exported?"); Toast.makeText(MainActivity.this, "Cannot start: Make sure you set 'exported=true' flag on your settings activity.", Toast.LENGTH_LONG).show(); } catch (ActivityNotFoundException e) { Log.e(TAG, "Cannot start: Unknown activity"); Toast.makeText(MainActivity.this, "Cannot start: The settings activity hasn't been found in the package.", Toast.LENGTH_LONG).show(); } } }); } public void showSnackBar(String message, String button, Snackbar.ActionClickListener listener) { Snackbar.with(getApplicationContext()).type(Snackbar.SnackbarType.MULTI_LINE).text(message) .actionLabel(button).actionListener(listener).duration(Snackbar.SnackbarDuration.LENGTH_VERY_LONG) .show(this); } public boolean isPlayBarVisible() { return mPlayingBarLayout.isVisible(); } @Override public void onBackPressed() { if (!mSearchView.isIconified()) { mSearchView.setIconified(true); //mNavigationDrawerFragment.setDrawerIndicatorEnabled(true); getSupportActionBar().setDisplayHomeAsUpEnabled(false); } else if (!mPlayingBarLayout.isWrapped()) { mPlayingBarLayout.setWrapped(true); } else if (mNavigationDrawerFragment.isDrawerOpen()) { mNavigationDrawerFragment.closeDrawer(); } else { super.onBackPressed(); if (getSupportFragmentManager().getBackStackEntryCount() == 0) { mNavigationDrawerFragment.selectItem(SECTION_LISTEN_NOW - 1); onSectionAttached(SECTION_LISTEN_NOW); } restoreActionBar(); } } public void openSection(int section) { mNavigationDrawerFragment.selectItem(section - 1); onSectionAttached(section); restoreActionBar(); } @Override protected void onResume() { super.onResume(); PluginsLookup.getDefault().requestUpdatePlugins(); mPlayingBarLayout.onResume(); if (mConfiguringProvider != null) { IMusicProvider provider = mConfiguringProvider.getBinder(); if (provider != null) { try { if (provider.isSetup()) { provider.login(); } } catch (RemoteException e) { Log.e(TAG, "Remote exception while trying to login configured provider", e); } } else { Log.w(TAG, "Configured provider is null!"); } } onSectionAttached(mCurrentFragmentIndex + 1); restoreActionBar(); } @Override protected void onPause() { mPlayingBarLayout.onPause(); super.onPause(); } @Override protected void onStart() { mCastModule.onStart(); super.onStart(); } @Override protected void onStop() { mCastModule.onStop(); super.onStop(); } @Override protected void onDestroy() { HttpResponseCache cache = HttpResponseCache.getInstalled(); if (cache != null) { cache.flush(); } // Release services connections if playback isn't happening PluginsLookup.getDefault().releasePlaybackServiceIfPossible(); ImageCache.getDefault().evictAll(); System.gc(); super.onDestroy(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); if (mOrientation != newConfig.orientation) { mOrientation = newConfig.orientation; } onSectionAttached(mCurrentFragmentIndex + 1); restoreActionBar(); } @Override public boolean onNavigationDrawerItemSelected(int position) { // update the main content by replacing fragments boolean result = true; if (mCurrentFragmentIndex == position) { return false; } try { if (position + 1 < SECTION_DRIVE_MODE) { mCurrentFragmentIndex = position; } final String fragmentTag = "" + position + "_" + mOrientation; if (mPlayingBarLayout != null) { mPlayingBarLayout.animate().alpha(1).setDuration(400).start(); } Fragment newFrag = null; boolean needsBackground = true; switch (position + 1) { case SECTION_LISTEN_NOW: newFrag = ListenNowFragment.newInstance(); break; case SECTION_PLAYLISTS: newFrag = PlaylistListFragment.newInstance(true); break; case SECTION_MY_SONGS: newFrag = MySongsFragment.newInstance(); needsBackground = false; break; case SECTION_AUTOMIX: newFrag = AutomixFragment.newInstance(); break; case SECTION_RECOGNITION: newFrag = RecognitionFragment.newInstance(); break; case SECTION_HISTORY: newFrag = HistoryFragment.newInstance(); break; case SECTION_LYRICS: newFrag = LyricsFragment.newInstance(); break; case SECTION_NOW_PLAYING: newFrag = PlaybackQueueFragment.newInstance(); mPlayingBarLayout.animate().alpha(0).setDuration(400).start(); break; case SECTION_DRIVE_MODE + 1: // offset the divider startActivity(new Intent(this, DriveModeActivity.class)); break; case SECTION_SETTINGS + 1: // offset the divider startActivity(new Intent(this, SettingsActivity.class)); break; } if (needsBackground) { getWindow().setBackgroundDrawable( new ColorDrawable(getResources().getColor(R.color.default_fragment_background))); } else { getWindow().setBackgroundDrawable(null); } if (newFrag != null) { showFragment(newFrag, position + 1 != SECTION_LISTEN_NOW, fragmentTag); result = true; } else { result = false; } } catch (IllegalStateException e) { // The app is pausing } return result; } public void showFragment(Fragment f, boolean addToStack, String tag) { // update the main content by replacing fragments FragmentManager fragmentManager = getSupportFragmentManager(); if (fragmentManager.getBackStackEntryCount() > 0) { fragmentManager.popBackStack(); } FragmentTransaction ft = fragmentManager.beginTransaction(); if (addToStack) { ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE); ft.addToBackStack(f.toString()); } else { ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); } ft.replace(R.id.container, f, tag); ft.commit(); } public void onSectionAttached(final int number) { switch (number) { case SECTION_MY_SONGS: mTitle = getString(R.string.title_section_my_songs); break; case SECTION_PLAYLISTS: mTitle = getString(R.string.title_section_playlists); break; case SECTION_AUTOMIX: mTitle = getString(R.string.title_section_automix); break; case SECTION_RECOGNITION: mTitle = getString(R.string.title_section_recognition); break; case SECTION_HISTORY: mTitle = getString(R.string.section_history); break; case SECTION_LYRICS: mTitle = getString(R.string.section_lyrics); break; case SECTION_NOW_PLAYING: mTitle = getString(R.string.title_activity_playback_queue); break; case SECTION_LISTEN_NOW: default: mTitle = getString(R.string.title_section_listen_now); break; } if (mToolbar != null) { if (number != SECTION_LISTEN_NOW) { mToolbar.setBackgroundColor(getResources().getColor(R.color.primary)); } } } public void restoreActionBar() { if (mToolbar != null && mCurrentFragmentIndex + 1 != SECTION_LISTEN_NOW) { mToolbar.setTitle(mTitle); } } public void openSearchView() { mSearchView.callOnClick(); } public void toggleOfflineMode() { mOfflineMenuItem.setChecked(!mOfflineMenuItem.isChecked()); ProviderAggregator.getDefault().notifyOfflineMode(mOfflineMenuItem.isChecked()); } @Override public boolean onCreateOptionsMenu(final Menu menu) { if (!mNavigationDrawerFragment.isDrawerOpen()) { if ((mCurrentFragmentIndex + 1) != SECTION_AUTOMIX) { // Only show items in the action bar relevant to this screen // if the drawer is not showing. Otherwise, let the drawer // decide what to show in the action bar. getMenuInflater().inflate(R.menu.main, menu); SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); mSearchView = (SearchView) menu.findItem(R.id.action_search).getActionView(); mSearchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); mSearchView.setIconifiedByDefault(true); mSearchView.setQueryRefinementEnabled(true); mSearchView.setSubmitButtonEnabled(true); if (mCurrentFragmentIndex + 1 == SECTION_LISTEN_NOW) { menu.removeItem(R.id.action_search); } mSearchView.setOnSearchClickListener(new View.OnClickListener() { @Override public void onClick(View v) { menu.findItem(R.id.action_cast).setVisible(false); mNavigationDrawerFragment.setDrawerIndicatorEnabled(false); getSupportActionBar().setDisplayHomeAsUpEnabled(true); mSearchView.requestFocus(); mToolbar.setBackgroundColor(getResources().getColor(R.color.primary)); } }); mSearchView.setOnCloseListener(new SearchView.OnCloseListener() { @Override public boolean onClose() { if (Utils.hasJellyBeanMR1()) { MenuItem item = menu.findItem(R.id.action_cast); if (item != null) { item.setVisible(true); } } getSupportActionBar().setDisplayHomeAsUpEnabled(false); mNavigationDrawerFragment.setDrawerIndicatorEnabled(true); return false; } }); // Setup cast button on 4.2+ MenuItem castMenu = menu.findItem(R.id.action_cast); if (Utils.hasJellyBeanMR1()) { MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat .getActionProvider(castMenu); mediaRouteActionProvider.setRouteSelector(mCastModule.getSelector()); castMenu.setVisible(true); } else { Log.w(TAG, "Api too low to show cast action"); castMenu.setVisible(false); } // Offline mode mOfflineMenuItem = menu.findItem(R.id.action_offline_mode); ProviderAggregator aggregator = ProviderAggregator.getDefault(); if (aggregator.hasNetworkConnectivity()) { mOfflineMenuItem.setChecked(aggregator.isOfflineMode()); } else { mOfflineMenuItem.setEnabled(false); } } restoreActionBar(); return true; } return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: onBackPressed(); break; case R.id.action_sleep_timer: showSleepTimerDialog(); break; case R.id.action_offline_mode: toggleOfflineMode(); break; } return super.onOptionsItemSelected(item); } private void showSleepTimerDialog() { final long timerTimeout = PlaybackProxy.getSleepTimerEndTime(); if (timerTimeout > 0) { long seconds = timerTimeout / 1000L; long hours = (long) Math.floor(((double) seconds) / 3600.0); long minutes = seconds / 60 - hours * 60; AlertDialog.Builder builder = new AlertDialog.Builder(this) .setMessage(getString(R.string.sleep_timer_dialog_message, hours, minutes)) .setPositiveButton(R.string.dialog_buttton_continue, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }).setNegativeButton(R.string.stop, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { PlaybackProxy.setSleepTimer(-1); Toast.makeText(MainActivity.this, R.string.sleep_timer_disabled_toast, Toast.LENGTH_SHORT).show(); dialog.dismiss(); } }).setNeutralButton(R.string.change, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); long seconds = timerTimeout / 1000L; long hours = (long) Math.floor(((double) seconds) / 3600.0); long minutes = seconds / 60 - hours * 60; showSleepTimerPicker((int) hours, (int) minutes); } }); builder.show(); } else { showSleepTimerPicker(); } } private void showSleepTimerPicker() { TimePickerDialog dlg; if (Utils.hasLollipop()) { dlg = new TimePickerDialog(this, R.style.TimePickerAppDialog, this, 0, 0, true); } else { dlg = new TimePickerDialog(this, this, 0, 0, true); } dlg.show(); } private void showSleepTimerPicker(int hour, int minute) { TimePickerDialog dlg; if (Utils.hasLollipop()) { dlg = new TimePickerDialog(this, R.style.TimePickerAppDialog, this, hour, minute, true); } else { dlg = new TimePickerDialog(this, this, hour, minute, true); } dlg.show(); } @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { long delay = (hourOfDay * 3600L + minute * 60L) * 1000L; PlaybackProxy.setSleepTimer(SystemClock.uptimeMillis() + delay); Toast.makeText(this, getString(R.string.sleep_timer_confirm_toast, hourOfDay, minute), Toast.LENGTH_LONG) .show(); } }