Java tutorial
/* * Copyright 2011 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 com.google.android.apps.mytracks.widgets; import com.google.android.apps.mytracks.TrackDetailActivity; import com.google.android.apps.mytracks.TrackListActivity; import com.google.android.apps.mytracks.services.ControlRecordingService; import com.google.android.apps.mytracks.stats.TripStatistics; import com.google.android.apps.mytracks.util.IntentUtils; import com.google.android.apps.mytracks.util.PreferencesUtils; import com.google.android.apps.mytracks.util.StringUtils; import com.nogago.android.apps.tracks.content.MyTracksProviderUtils; import com.nogago.android.apps.tracks.content.Track; import com.nogago.bb10.tracks.R; import android.app.PendingIntent; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProvider; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.os.SystemClock; import android.support.v4.app.TaskStackBuilder; import android.widget.RemoteViews; /** * A track widget to start/stop/pause/resume recording, launch My Tracks, and * display track statistics (total distance, total time, average speed, and * moving time) for the recording track, the selected track or the last track. * * @author Sandor Dornbush * @author Paul R. Saxman */ public class TrackWidgetProvider extends AppWidgetProvider { @Override public void onReceive(Context context, Intent intent) { super.onReceive(context, intent); String action = intent.getAction(); if (AppWidgetManager.ACTION_APPWIDGET_ENABLED.equals(action) || AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action) || context.getString(R.string.track_paused_broadcast_action).equals(action) || context.getString(R.string.track_resumed_broadcast_action).equals(action) || context.getString(R.string.track_started_broadcast_action).equals(action) || context.getString(R.string.track_stopped_broadcast_action).equals(action) || context.getString(R.string.track_update_broadcast_action).equals(action)) { long trackId = intent.getLongExtra(context.getString(R.string.track_id_broadcast_extra), -1L); update(context, trackId); } } /** * Updates the widget. * * @param context the context * @param trackId the track id */ private void update(Context context, long trackId) { // Get the preferences long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key); boolean recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT); boolean metricUnits = PreferencesUtils.getBoolean(context, R.string.metric_units_key, PreferencesUtils.METRIC_UNITS_DEFAULT); // Get track and trip statistics MyTracksProviderUtils myTracksProviderUtils = MyTracksProviderUtils.Factory.get(context); if (trackId == -1L) { trackId = recordingTrackId; } if (trackId == -1L) { trackId = PreferencesUtils.getLong(context, R.string.selected_track_id_key); } Track track = trackId != -1L ? myTracksProviderUtils.getTrack(trackId) : myTracksProviderUtils.getLastTrack(); TripStatistics tripStatistics = track == null ? null : track.getTripStatistics(); RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.track_widget); boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT; updateStatisticsContainer(context, remoteViews, track); updateTotalDistance(context, remoteViews, tripStatistics, metricUnits); updateTotalTime(remoteViews, tripStatistics, isRecording, recordingTrackPaused); updateAverageSpeed(context, remoteViews, tripStatistics, metricUnits); updateMovingTime(context, remoteViews, tripStatistics); updateRecordButton(context, remoteViews, isRecording, recordingTrackPaused); updateRecordStatus(context, remoteViews, isRecording, recordingTrackPaused); updateStopButton(context, remoteViews, isRecording); AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context); int[] appWidgetIds = appWidgetManager .getAppWidgetIds(new ComponentName(context, TrackWidgetProvider.class)); for (int appWidgetId : appWidgetIds) { appWidgetManager.updateAppWidget(appWidgetId, remoteViews); } } /** * Updates the statistics container. * * @param context the context * @param remoteViews the remote views * @param track the track */ private void updateStatisticsContainer(Context context, RemoteViews remoteViews, Track track) { Intent intent; if (track != null) { intent = IntentUtils.newIntent(context, TrackDetailActivity.class) .putExtra(TrackDetailActivity.EXTRA_TRACK_ID, track.getId()); } else { intent = IntentUtils.newIntent(context, TrackListActivity.class); } TaskStackBuilder taskStackBuilder = TaskStackBuilder.from(context); taskStackBuilder.addNextIntent(intent); PendingIntent pendingIntent = taskStackBuilder.getPendingIntent(0, 0); remoteViews.setOnClickPendingIntent(R.id.track_widget_statistics, pendingIntent); remoteViews.setOnClickPendingIntent(R.id.track_widget_labels, pendingIntent); remoteViews.setOnClickPendingIntent(R.id.track_widget_logo_button, pendingIntent); } /** * Updates total distance. * * @param context the context * @param remoteViews the remote views * @param tripStatistics the trip statistics * @param metricUnits true to use metric units */ private void updateTotalDistance(Context context, RemoteViews remoteViews, TripStatistics tripStatistics, boolean metricUnits) { String totalDistanceValue = tripStatistics == null ? context.getString(R.string.value_unknown) : StringUtils.formatDistanceNoM(context, tripStatistics.getTotalDistance(), metricUnits); remoteViews.setTextViewText(R.id.track_widget_total_distance_value, totalDistanceValue); } /** * Updates total time. * * @param remoteViews the remote views * @param tripStatistics the trip statistics * @param isRecording true if recording * @param recordingTrackPaused true if recording track is paused */ private void updateTotalTime(RemoteViews remoteViews, TripStatistics tripStatistics, boolean isRecording, boolean recordingTrackPaused) { long totalTime; if (tripStatistics == null) { totalTime = 0L; } else { totalTime = tripStatistics.getTotalTime(); if (isRecording && !recordingTrackPaused) { totalTime += System.currentTimeMillis() - tripStatistics.getStopTime(); } } remoteViews.setChronometer(R.id.track_widget_total_time_value, SystemClock.elapsedRealtime() - totalTime, null, isRecording && !recordingTrackPaused); } /** * Updates average speed. * * @param context the context * @param remoteViews the remote views * @param tripStatistics the trip statistics * @param metricUnits true to use metric units */ private void updateAverageSpeed(Context context, RemoteViews remoteViews, TripStatistics tripStatistics, boolean metricUnits) { boolean reportSpeed = PreferencesUtils.getBoolean(context, R.string.report_speed_key, PreferencesUtils.REPORT_SPEED_DEFAULT); /* String averageSpeedLabel = context.getString( reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace); remoteViews.setTextViewText(R.id.track_widget_average_speed_label, averageSpeedLabel); */ String averageSpeedValue = tripStatistics == null ? context.getString(R.string.value_unknown) : StringUtils.formatSpeedNoM(context, tripStatistics.getAverageSpeed(), metricUnits, reportSpeed); remoteViews.setTextViewText(R.id.track_widget_average_speed_value, averageSpeedValue); } /** * Updates moving time. * * @param context the context * @param remoteViews the remote views * @param tripStatistics the trip statistics */ private void updateMovingTime(Context context, RemoteViews remoteViews, TripStatistics tripStatistics) { /* boolean showMovingTime = PreferencesUtils.getBoolean(context, R.string.stats_show_moving_time_key, PreferencesUtils.STATS_SHOW_MOVING_TIME_DEFAULT); remoteViews.setViewVisibility( R.id.track_widget_moving_time_container, showMovingTime ? View.VISIBLE : View.GONE); if (showMovingTime) { String movingTimeValue = tripStatistics == null ? context.getString(R.string.value_unknown) : StringUtils.formatElapsedTime(tripStatistics.getMovingTime()); remoteViews.setTextViewText(R.id.track_widget_moving_time_value, movingTimeValue); } */ } /** * Updates the record button. * * @param context the context * @param remoteViews the remote views * @param isRecording true if recording * @param recordingTrackPaused true if recording track is paused */ private void updateRecordButton(Context context, RemoteViews remoteViews, boolean isRecording, boolean recordingTrackPaused) { remoteViews.setImageViewResource(R.id.track_widget_record_button, isRecording && !recordingTrackPaused ? R.drawable.ic_pause : R.drawable.ic_record); int recordActionId; if (isRecording) { recordActionId = recordingTrackPaused ? R.string.track_action_resume : R.string.track_action_pause; } else { recordActionId = R.string.track_action_start; } Intent intent = new Intent(context, ControlRecordingService.class) .setAction(context.getString(recordActionId)); PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); remoteViews.setOnClickPendingIntent(R.id.track_widget_record_button, pendingIntent); } /** * Updates recording status. * * @param context the context * @param remoteViews the remote views * @param isRecording true if recording * @param recordingTrackPaused true if recording track is paused */ private void updateRecordStatus(Context context, RemoteViews remoteViews, boolean isRecording, boolean recordingTrackPaused) { String status; int colorId; if (isRecording) { status = context.getString(recordingTrackPaused ? R.string.generic_paused : R.string.generic_recording); colorId = recordingTrackPaused ? android.R.color.white : R.color.red; } else { status = ""; colorId = android.R.color.white; } /* Record Status out remoteViews.setTextColor( R.id.track_widget_record_status, context.getResources().getColor(colorId)); remoteViews.setTextViewText(R.id.track_widget_record_status, status); */ } /** * Updates the stop button. * * @param context the context * @param remoteViews the remote views * @param isRecording true if recording */ private void updateStopButton(Context context, RemoteViews remoteViews, boolean isRecording) { remoteViews.setImageViewResource(R.id.track_widget_stop_button, isRecording ? R.drawable.ic_stop_1 : R.drawable.ic_stop_0); remoteViews.setBoolean(R.id.track_widget_stop_button, "setEnabled", isRecording); if (isRecording) { Intent intent = new Intent(context, ControlRecordingService.class) .setAction(context.getString(R.string.track_action_end)); PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); remoteViews.setOnClickPendingIntent(R.id.track_widget_stop_button, pendingIntent); } } }