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.fastbootmobile.encore.app.fragments; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.ListFragment; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.ListView; import com.fastbootmobile.encore.app.R; import com.fastbootmobile.encore.app.adapters.DspAdapter; import com.fastbootmobile.encore.framework.PlaybackProxy; import com.fastbootmobile.encore.framework.PluginsLookup; import com.fastbootmobile.encore.providers.DSPConnection; import com.fastbootmobile.encore.providers.ProviderIdentifier; import com.fastbootmobile.encore.utils.Utils; import java.util.List; /** * A simple {@link android.app.Fragment} subclass. * Use the {@link com.fastbootmobile.encore.app.fragments.DspProvidersFragment#newInstance} factory method to * create an instance of this fragment. * */ public class DspProvidersFragment extends ListFragment { private static final String TAG = "DspProvidersFragment"; private DspAdapter mAdapter; private Handler mHandler; private DspAdapter.ClickListener mClickListener = new DspAdapter.ClickListener() { @Override public void onDeleteClicked(int position) { List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); if (position < chain.size()) { chain.remove(position); PlaybackProxy.setDSPChain(chain); } else { Log.w(TAG, "Invalid element position: " + position + " (size=" + chain.size() + ")"); } postUpdateDspChain(); } @Override public void onUpClicked(int position) { List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); ProviderIdentifier item = chain.remove(position); position = Math.max(position - 1, 0); chain.add(position, item); PlaybackProxy.setDSPChain(chain); postUpdateDspChain(); } @Override public void onDownClicked(int position) { List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); ProviderIdentifier item = chain.remove(position); position = Math.min(chain.size(), position + 1); chain.add(position, item); PlaybackProxy.setDSPChain(chain); postUpdateDspChain(); } }; /** * Use this factory method to create a new instance of * this fragment using the provided parameters. * @return A new instance of fragment SettingsProviders. */ public static DspProvidersFragment newInstance() { return new DspProvidersFragment(); } public DspProvidersFragment() { // Required empty public constructor } private void postUpdateDspChain() { mHandler.post(new Runnable() { @Override public void run() { updateDspChain(); } }); } public void updateDspChain() { List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); if (mAdapter == null) { mAdapter = new DspAdapter(chain); } else { mAdapter.updateChain(chain); } mAdapter.setClickListener(mClickListener); setListAdapter(mAdapter); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); mHandler = new Handler(); updateDspChain(); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); setEmptyText( "Sound effects plugins allows you to enhance your sound experience (via bass boosting, equalizer, etc). Tap '+' to add an installed plugin to the chain, or tap the cloud icon to discover more effects."); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); menu.clear(); inflater.inflate(R.menu.dsp_settings, menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_add_effect: showAddEffect(); return true; case R.id.menu_download_effect: ProviderDownloadDialog.newInstance(true).show(getFragmentManager(), "DSPDownload"); return true; default: return false; } } @Override public void onListItemClick(ListView l, View v, int position, long id) { DSPConnection connection = ((DspAdapter) getListAdapter()).getItem(position); if (connection.getConfigurationActivity() != null) { Intent i = new Intent(); i.setClassName(connection.getPackage(), connection.getConfigurationActivity()); try { startActivity(i); } catch (SecurityException e) { Utils.shortToast(getActivity(), R.string.plugin_error); Log.e(TAG, "Unable to start configuration activity. Is it exported in the manifest?", e); } catch (ActivityNotFoundException e) { Utils.shortToast(getActivity(), R.string.plugin_error); Log.e(TAG, "Unable to start configuration activity, as the activity wasn't found", e); } } else { Utils.shortToast(getActivity(), R.string.no_settings_dsp); } } public void showAddEffect() { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(R.string.add_effect); // Lookup all the DSP effects providers that aren't already in the chain final List<DSPConnection> availableDsp = PluginsLookup.getDefault().getAvailableDSPs(); final List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); final List<DSPConnection> dsps = PluginsLookup.getDefault().getAvailableDSPs(); for (ProviderIdentifier pi : chain) { for (DSPConnection dsp : dsps) { if (dsp.getIdentifier().equals(pi)) { availableDsp.remove(dsp); } } } if (availableDsp.size() > 0) { CharSequence[] items = new CharSequence[availableDsp.size()]; int i = 0; for (DSPConnection dsp : availableDsp) { items[i] = dsp.getProviderName(); i++; } builder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { addEffectToChain(availableDsp.get(i)); updateDspChain(); dialogInterface.dismiss(); } }); builder.setIcon(R.drawable.ic_nav_listen_now); builder.setCancelable(true); builder.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { dialogInterface.dismiss(); } }); builder.show(); } else { Utils.shortToast(getActivity(), R.string.all_dsp_in_use); } } public void addEffectToChain(DSPConnection dsp) { final List<ProviderIdentifier> chain = PlaybackProxy.getDSPChain(); chain.add(dsp.getIdentifier()); PlaybackProxy.setDSPChain(chain); } }