Java tutorial
/* * AndFHEM - Open Source Android application to control a FHEM home automation * server. * * Copyright (c) 2011, Matthias Klass or third-party contributors as * indicated by the @author tags or express copyright attribution * statements applied by the authors. All third-party contributions are * distributed under license by Red Hat Inc. * * This copyrighted material is made available to anyone wishing to use, modify, * copy, or redistribute it subject to the terms and conditions of the GNU GENERAL PUBLIC LICENSE, as published by the Free Software Foundation. * * 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 distribution; if not, write to: * Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor * Boston, MA 02110-1301 USA */ package li.klass.fhem.fragments; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.ResultReceiver; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import java.util.ArrayList; import li.klass.fhem.R; import li.klass.fhem.constants.Actions; import li.klass.fhem.constants.BundleExtraKeys; import li.klass.fhem.constants.ResultCodes; import li.klass.fhem.fragments.core.BaseFragment; import li.klass.fhem.service.intent.SendCommandIntentService; import li.klass.fhem.util.ListViewUtil; import static org.apache.commons.lang3.StringUtils.isEmpty; public class SendCommandFragment extends BaseFragment { private transient ArrayAdapter<String> recentCommandsAdapter; private ArrayList<String> recentCommands; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); final View view = inflater.inflate(R.layout.command_execution, container, false); Button sendButton = (Button) view.findViewById(R.id.send); sendButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View button) { EditText editText = (EditText) view.findViewById(R.id.input); String command = editText.getText().toString(); sendCommandIntent(command); } }); ListView recentCommandsList = (ListView) view.findViewById(R.id.command_history); recentCommandsAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1); recentCommandsList.setAdapter(recentCommandsAdapter); recentCommandsList.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { String command = recentCommands.get(position); sendCommandIntent(command); } }); return view; } private void sendCommandIntent(String command) { final Context context = getActivity(); Intent intent = new Intent(Actions.EXECUTE_COMMAND); intent.setClass(getActivity(), SendCommandIntentService.class); intent.putExtra(BundleExtraKeys.COMMAND, command); intent.putExtra(BundleExtraKeys.RESULT_RECEIVER, new ResultReceiver(new Handler()) { @Override protected void onReceiveResult(int resultCode, Bundle resultData) { if (resultData != null && resultCode == ResultCodes.SUCCESS && resultData.containsKey(BundleExtraKeys.COMMAND_RESULT)) { String result = resultData.getString(BundleExtraKeys.COMMAND_RESULT); if (result == null || result.equals("")) { update(false); return; } if (isEmpty(result.replaceAll("[\\r\\n]", ""))) return; new AlertDialog.Builder(context).setTitle(R.string.command_execution_result).setMessage(result) .setPositiveButton(R.string.okButton, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { dialogInterface.cancel(); update(false); } }).show(); } } }); getActivity().startService(intent); } @Override public void update(boolean doUpdate) { Intent intent = new Intent(Actions.RECENT_COMMAND_LIST); intent.setClass(getActivity(), SendCommandIntentService.class); intent.putExtra(BundleExtraKeys.RESULT_RECEIVER, new ResultReceiver(new Handler()) { @Override protected void onReceiveResult(int resultCode, Bundle resultData) { if (resultCode != ResultCodes.SUCCESS || resultData == null || !resultData.containsKey(BundleExtraKeys.RECENT_COMMANDS)) { return; } View view = getView(); if (view == null) return; recentCommands = resultData.getStringArrayList(BundleExtraKeys.RECENT_COMMANDS); recentCommandsAdapter.clear(); // careful: addAll method is only available since API level 11 (Android 3.0) for (String recentCommand : recentCommands) { recentCommandsAdapter.add(recentCommand); } recentCommandsAdapter.notifyDataSetChanged(); ListViewUtil.setHeightBasedOnChildren((ListView) view.findViewById(R.id.command_history)); getActivity().sendBroadcast(new Intent(Actions.DISMISS_EXECUTING_DIALOG)); } }); getActivity().startService(intent); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); update(false); } }