Java tutorial
/* * This file is part of snapcast * Copyright (C) 2014-2016 Johannes Pohl * * 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 de.badaix.snapcast; import android.content.Context; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import de.badaix.snapcast.control.json.Client; import de.badaix.snapcast.control.json.ServerStatus; import de.badaix.snapcast.control.json.Stream; /** * A simple {@link Fragment} subclass. * Activities that contain this fragment must implement the * {@link ClientItem.ClientInfoItemListener} interface * to handle interaction events. */ public class ClientListFragment extends Fragment { private static final String TAG = "ClientList"; // TODO: Rename parameter arguments, choose names that match // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER private static final String ARG_PARAM1 = "param1"; private static final String ARG_PARAM2 = "param2"; // TODO: Rename and change types of parameters private Stream stream; private ClientItem.ClientInfoItemListener clientInfoItemListener; private ClientInfoAdapter clientInfoAdapter; private ServerStatus serverStatus = null; private boolean hideOffline = false; private TextView tvStreamState = null; public ClientListFragment() { // Required empty public constructor } /** * Use this factory method to create a new instance of * this fragment using the provided parameters. * <p/> * //@param param1 Parameter 1. * * @return A new instance of fragment ClientListFragment. * // TODO: Rename and change types and number of parameters * public static ClientListFragment newInstance(String param1) { * ClientListFragment fragment = new ClientListFragment(); * Bundle args = new Bundle(); * args.putString(ARG_PARAM1, param1); * fragment.setArguments(args); * return fragment; * } */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments() != null) { // mParam1 = getArguments().getString(ARG_PARAM1); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment Log.d(TAG, "onCreateView: " + this.toString()); View view = inflater.inflate(R.layout.fragment_client_list, container, false); tvStreamState = (TextView) view.findViewById(R.id.tvStreamState); ListView lvClient = (ListView) view.findViewById(R.id.lvClient); clientInfoAdapter = new ClientInfoAdapter(getContext(), clientInfoItemListener); clientInfoAdapter.setHideOffline(hideOffline); clientInfoAdapter.updateServer(serverStatus); lvClient.setAdapter(clientInfoAdapter); updateGui(); return view; } private void updateGui() { Log.d(TAG, "(tvStreamState == null): " + (tvStreamState == null) + " " + this.toString()); if ((tvStreamState == null) || (stream == null)) return; String codec = stream.getUri().getQuery().get("codec"); if (codec.contains(":")) codec = codec.split(":")[0]; tvStreamState.setText(stream.getUri().getQuery().get("sampleformat") + " - " + codec + " - " + stream.getStatus().toString()); } @Override public void onAttach(Context context) { super.onAttach(context); if (context instanceof ClientItem.ClientInfoItemListener) { clientInfoItemListener = (ClientItem.ClientInfoItemListener) context; } else { throw new RuntimeException(context.toString() + " must implement ClientInfoItemListener"); } updateGui(); } @Override public void onDetach() { super.onDetach(); clientInfoItemListener = null; } public void updateServer(ServerStatus serverStatus) { this.serverStatus = serverStatus; if (clientInfoAdapter != null) clientInfoAdapter.updateServer(this.serverStatus); } public void setHideOffline(boolean hide) { this.hideOffline = hide; if (clientInfoAdapter != null) clientInfoAdapter.setHideOffline(hideOffline); } public String getName() { return stream.getName(); } public void setStream(Stream stream) { Log.d(TAG, "setStream: " + stream.getName() + ", status: " + stream.getStatus()); this.stream = stream; updateGui(); } public class ClientInfoAdapter extends ArrayAdapter<Client> { private Context context; private ClientItem.ClientInfoItemListener listener; private boolean hideOffline = false; private ServerStatus serverStatus = new ServerStatus(); public ClientInfoAdapter(Context context, ClientItem.ClientInfoItemListener listener) { super(context, 0); this.context = context; this.listener = listener; } @Override public View getView(int position, View convertView, ViewGroup parent) { Client client = getItem(position); final ClientItem clientItem; if (convertView != null) { clientItem = (ClientItem) convertView; clientItem.setClient(client); } else { clientItem = new ClientItem(context, serverStatus, client); } clientItem.setListener(listener); return clientItem; } public void updateServer(final ServerStatus serverStatus) { if (serverStatus != null) { ClientInfoAdapter.this.serverStatus = serverStatus; update(); } } public void update() { clear(); for (Client client : ClientInfoAdapter.this.serverStatus.getClientInfos()) { if ((client != null) && (!hideOffline || client.isConnected()) && !client.isDeleted() && client.getConfig().getStream().equals(ClientListFragment.this.stream.getId())) add(client); } if (getActivity() != null) { ClientListFragment.this.getActivity().runOnUiThread(new Runnable() { @Override public void run() { notifyDataSetChanged(); } }); } } public boolean isHideOffline() { return hideOffline; } public void setHideOffline(boolean hideOffline) { if (this.hideOffline == hideOffline) return; this.hideOffline = hideOffline; update(); } } }