Java tutorial
/* * Copyright (C) 2010-2014 The MPDroid Project * * 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.audiokernel.euphonyrmt.fragments; import com.audiokernel.euphonyrmt.MPDApplication; import com.audiokernel.euphonyrmt.MainMenuActivity; import org.a0z.mpd.MPD; import org.a0z.mpd.MPDOutput; import org.a0z.mpd.exception.MPDException; import android.app.Activity; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.util.Log; import android.view.View; import android.widget.AbsListView; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.BaseAdapter; import android.widget.ListAdapter; import android.widget.ListView; import java.io.IOException; import java.util.ArrayList; import java.util.List; public class OutputsFragment extends ListFragment implements AdapterView.OnItemClickListener { private static final String TAG = "OutputsFragment"; private final MPDApplication mApp = MPDApplication.getInstance(); private ArrayList<MPDOutput> mOutputs; @Override public void onActivityCreated(final Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); final ListAdapter arrayAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_multiple_choice, mOutputs); setListAdapter(arrayAdapter); getListView().setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE); getListView().setOnItemClickListener(this); // Not needed since MainMenuActivity will take care of telling us to refresh if (!(getActivity() instanceof MainMenuActivity)) { refreshOutputs(); } } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); mOutputs = new ArrayList<>(); } @Override public void onItemClick(final AdapterView<?> parent, final View view, final int position, final long id) { mApp.oMPDAsyncHelper.execAsync(new Runnable() { @Override public void run() { final MPD mpd = mApp.oMPDAsyncHelper.oMPD; final MPDOutput output = mOutputs.get(position); try { if (getListView().isItemChecked(position)) { mpd.enableOutput(output.getId()); } else { mpd.disableOutput(output.getId()); } } catch (final IOException | MPDException e) { Log.e(TAG, "Failed to modify output.", e); } final Activity activity = getActivity(); if (activity != null) { activity.runOnUiThread(new Runnable() { @Override public void run() { refreshOutputs(); } }); } } }); } public void refreshOutputs() { mApp.oMPDAsyncHelper.execAsync(new Runnable() { @Override public void run() { try { final List<MPDOutput> mpdOutputs = mApp.oMPDAsyncHelper.oMPD.getOutputs(); mOutputs.clear(); mOutputs.addAll(mpdOutputs); } catch (final IOException | MPDException e) { Log.e(TAG, "Failed to list outputs.", e); } final Activity activity = getActivity(); if (activity != null) { activity.runOnUiThread(new Runnable() { @Override @SuppressWarnings("unchecked") public void run() { try { ((BaseAdapter) getListAdapter()).notifyDataSetChanged(); final ListView list = getListView(); for (int i = 0; i < mOutputs.size(); i++) { list.setItemChecked(i, mOutputs.get(i).isEnabled()); } } catch (IllegalStateException e) { Log.e(TAG, "Illegal Activity state while trying to refresh output list"); } } }); } } }); } }