Java tutorial
/* * Copyright (c) 2014, the SenSee authors. Please see the AUTHORS file * for details. * * Licensed under the GNU Public License, Version 3.0 (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.gnu.org/copyleft/gpl.html * * 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 sysnetlab.android.sdc.ui.fragments; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import sysnetlab.android.sdc.R; import sysnetlab.android.sdc.datacollector.ExperimentManagerSingleton; import sysnetlab.android.sdc.sensor.AbstractSensor; import sysnetlab.android.sdc.sensor.SensorDiscoverer; import sysnetlab.android.sdc.ui.CreateExperimentActivity; import sysnetlab.android.sdc.ui.ViewExperimentActivity; import sysnetlab.android.sdc.ui.adapters.SensorListAdapter; import android.app.Activity; 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.AdapterView; import android.widget.ListView; import android.widget.TextView; public class ExperimentSensorListFragment extends Fragment { private OnFragmentClickListener mCallback; private ListView mListView; public interface OnFragmentClickListener { public void onSensorClicked_ExperimentSensorListFragment(AbstractSensor sensor); public void onSensorClicked_ExperimentSensorListFragment(int sensorNo); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_experiment_sensor_list, container, false); ListView listView = (ListView) view.findViewById(R.id.listview_experiment_view_sensor_list); TextView textView = (TextView) view.findViewById(R.id.textview_experiment_view_no_sensors); Activity activity = getActivity(); List<AbstractSensor> lstSensors = null; List<AbstractSensor> selectedSensors = new ArrayList<AbstractSensor>(); if (activity instanceof ViewExperimentActivity) { lstSensors = (ArrayList<AbstractSensor>) ExperimentManagerSingleton.getInstance().getActiveExperiment() .getSensors(); Log.d("SensorDataCollector", "ViewExperimentActivity::ExperimentSensorListFragment::onCreateView() sensors: " + lstSensors.size()); } else if (activity instanceof CreateExperimentActivity) { if (!SensorDiscoverer.isInitialized()) SensorDiscoverer.initialize(activity.getApplicationContext()); lstSensors = SensorDiscoverer.discoverSensorList(); ((CreateExperimentActivity) activity).selectSensors(lstSensors); for (Iterator<AbstractSensor> it = lstSensors.iterator(); it.hasNext();) { AbstractSensor sensor = it.next(); if (sensor.isSelected()) { selectedSensors.add(sensor); } } Log.d("SensorDataCollector", "CreateExperimentActivity::ExperimentSensorListFragment::onCreateView() sensors: " + selectedSensors.size()); } else { Log.d("SensorDataCollector", "ExperimentSensorListFragment::onCreateView(): " + "not a CreateExperimentActivity."); } if (selectedSensors == null || selectedSensors.size() == 0) { Log.d("SensorDataCollector", "CreateExperimentActivity::ExperimentSensorListFragment::onCreateView() nothing to show"); textView.setVisibility(View.GONE); listView.setVisibility(View.GONE); } else { Log.d("SensorDataCollector", "CreateExperimentActivity::ExperimentSensorListFragment::onCreateView() show sensors"); textView.setVisibility(View.GONE); SensorListAdapter sensorListAdaptor = new SensorListAdapter(activity, selectedSensors, View.GONE); listView.setAdapter(sensorListAdaptor); listView.setVisibility(View.VISIBLE); } mListView = listView; return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (mListView != null) { mListView.setOnItemClickListener(new ListView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> listView, View view, int position, long id) { Log.d("SensorDataCollector", "onActivityCreated(): Sensor ListView clicked at postion " + position); if (getActivity() instanceof ViewExperimentActivity) { mCallback.onSensorClicked_ExperimentSensorListFragment(position); } else if (getActivity() instanceof CreateExperimentActivity) { mCallback.onSensorClicked_ExperimentSensorListFragment( (AbstractSensor) listView.getItemAtPosition(position)); } } }); } } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mCallback = (OnFragmentClickListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnFragmentClickListener"); } } public ListView getListView() { return mListView; } }