Java tutorial
/* * Copyright 2008 Google Inc. * * 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 br.com.bioscada.apps.biotracks.fragments; import android.location.Location; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.widget.Spinner; import com.google.android.lib.mytracks.content.Track; import com.google.android.lib.mytracks.content.Waypoint; import com.google.android.lib.mytracks.stats.TripStatistics; import java.util.EnumSet; import br.com.bioscada.apps.biotracks.R; import br.com.bioscada.apps.biotracks.TrackDetailActivity; import br.com.bioscada.apps.biotracks.content.TrackDataHub; import br.com.bioscada.apps.biotracks.content.TrackDataListener; import br.com.bioscada.apps.biotracks.content.TrackDataType; import br.com.bioscada.apps.biotracks.util.CalorieUtils; import br.com.bioscada.apps.biotracks.util.CalorieUtils.ActivityType; import br.com.bioscada.apps.biotracks.util.LocationUtils; import br.com.bioscada.apps.biotracks.util.PreferencesUtils; import br.com.bioscada.apps.biotracks.util.StatsUtils; import br.com.bioscada.apps.biotracks.util.TrackIconUtils; import br.com.bioscada.apps.biotracks.util.UnitConversions; /** * A fragment to display track statistics to the user. * * @author Sandor Dornbush * @author Rodrigo Damazio */ public class StatsFragment extends Fragment implements TrackDataListener { public static final String STATS_FRAGMENT_TAG = "statsFragment"; // 1 second in milliseconds private static final long ONE_SECOND = (long) UnitConversions.S_TO_MS; private TrackDataHub trackDataHub; private Handler handler; private Location lastLocation = null; private TripStatistics lastTripStatistics = null; private String category = ""; private int recordingGpsAccuracy = PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT; // A runnable to update the total time field. private final Runnable updateTotalTime = new Runnable() { public void run() { if (isResumed() && isSelectedTrackRecording()) { if (!isSelectedTrackPaused() && lastTripStatistics != null) { StatsUtils.setTotalTimeValue(getActivity(), System.currentTimeMillis() - lastTripStatistics.getStopTime() + lastTripStatistics.getTotalTime()); } handler.postDelayed(this, ONE_SECOND); } } }; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.stats, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); handler = new Handler(); Spinner activityTypeIcon = (Spinner) getView().findViewById(R.id.stats_activity_type_icon); activityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(getActivity(), "")); activityTypeIcon.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_UP) { ((TrackDetailActivity) getActivity()).chooseActivityType(category); } return true; } }); activityTypeIcon.setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { ((TrackDetailActivity) getActivity()).chooseActivityType(category); } return true; } }); } @Override public void onResume() { super.onResume(); resumeTrackDataHub(); updateUi(getActivity()); if (isSelectedTrackRecording()) { handler.post(updateTotalTime); } } @Override public void onPause() { super.onPause(); pauseTrackDataHub(); handler.removeCallbacks(updateTotalTime); } @Override public void onTrackUpdated(final Track track) { if (isResumed()) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (isResumed()) { lastTripStatistics = track != null ? track.getTripStatistics() : null; category = track != null ? track.getCategory() : ""; updateUi(getActivity()); } } }); } } @Override public void clearTrackPoints() { lastLocation = null; } @Override public void onSampledInTrackPoint(Location location) { lastLocation = location; } @Override public void onSampledOutTrackPoint(Location location) { lastLocation = location; } @Override public void onSegmentSplit(Location location) { // We don't care. } @Override public void onNewTrackPointsDone() { if (isResumed()) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (isResumed()) { if (!isSelectedTrackRecording() || isSelectedTrackPaused()) { lastLocation = null; } if (lastLocation != null) { boolean hasFix = !LocationUtils.isLocationOld(lastLocation); boolean hasGoodFix = lastLocation.hasAccuracy() && lastLocation.getAccuracy() < recordingGpsAccuracy; if (!hasFix || !hasGoodFix) { lastLocation = null; } } StatsUtils.setLocationValues(getActivity(), getActivity(), null, lastLocation, isSelectedTrackRecording()); } } }); } } @Override public void clearWaypoints() { // We don't care. } @Override public void onNewWaypoint(Waypoint wpt) { // We don't care. } @Override public void onNewWaypointsDone() { // We don't care. } @Override public boolean onMetricUnitsChanged(final boolean metric) { if (isResumed()) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (isResumed()) { updateUi(getActivity()); } } }); } return true; } @Override public boolean onReportSpeedChanged(final boolean speed) { if (isResumed()) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { if (isResumed()) { updateUi(getActivity()); } } }); } return true; } @Override public boolean onRecordingGpsAccuracy(int newValue) { recordingGpsAccuracy = newValue; return false; } @Override public boolean onRecordingDistanceIntervalChanged(int minRecordingDistance) { // We don't care. return false; } @Override public boolean onMapTypeChanged(int mapType) { // We don't care return false; } /** * Resumes the trackDataHub. Needs to be synchronized because trackDataHub can * be accessed by multiple threads. */ private synchronized void resumeTrackDataHub() { trackDataHub = ((TrackDetailActivity) getActivity()).getTrackDataHub(); trackDataHub.registerTrackDataListener(this, EnumSet.of(TrackDataType.TRACKS_TABLE, TrackDataType.SAMPLED_IN_TRACK_POINTS_TABLE, TrackDataType.SAMPLED_OUT_TRACK_POINTS_TABLE, TrackDataType.PREFERENCE)); } /** * Pauses the trackDataHub. Needs to be synchronized because trackDataHub can * be accessed by multiple threads. */ private synchronized void pauseTrackDataHub() { trackDataHub.unregisterTrackDataListener(this); trackDataHub = null; } /** * Returns true if the selected track is recording. Needs to be synchronized * because trackDataHub can be accessed by multiple threads. */ private synchronized boolean isSelectedTrackRecording() { return trackDataHub != null && trackDataHub.isSelectedTrackRecording(); } /** * Returns true if the selected track is paused. Needs to be synchronized * because trackDataHub can be accessed by multiple threads. */ private synchronized boolean isSelectedTrackPaused() { return trackDataHub != null && trackDataHub.isSelectedTrackPaused(); } /** * Updates the UI. */ private void updateUi(FragmentActivity activity) { ActivityType activityType = CalorieUtils.getActivityType(activity, category); String trackIconValue = TrackIconUtils.getIconValue(activity, category); StatsUtils.setTripStatisticsValues(activity, activity, null, lastTripStatistics, activityType, trackIconValue); StatsUtils.setLocationValues(activity, activity, null, lastLocation, isSelectedTrackRecording()); } }