1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.locationtracker; 18 19 import com.android.locationtracker.data.DateUtils; 20 import com.android.locationtracker.data.TrackerDataHelper; 21 import com.android.locationtracker.data.TrackerListHelper; 22 23 import android.app.AlertDialog; 24 import android.app.ListActivity; 25 import android.content.DialogInterface; 26 import android.content.DialogInterface.OnClickListener; 27 import android.content.Intent; 28 import android.database.Cursor; 29 import android.location.LocationManager; 30 import android.os.Bundle; 31 import android.os.Environment; 32 import android.util.Log; 33 import android.view.Menu; 34 import android.view.MenuInflater; 35 import android.view.MenuItem; 36 import android.widget.Toast; 37 38 import java.io.BufferedWriter; 39 import java.io.File; 40 import java.io.FileWriter; 41 import java.io.IOException; 42 import java.io.Writer; 43 44 /** 45 * Activity for location tracker service 46 * 47 * Contains facilities for starting and 48 * stopping location tracker service, as well as displaying the current location 49 * data 50 * 51 * Future enhancements: 52 * - export data as dB 53 * - enable/disable "start service" and "stop service" menu items as 54 * appropriate 55 */ 56 public class TrackerActivity extends ListActivity { 57 58 static final String LOG_TAG = "LocationTracker"; 59 60 private TrackerListHelper mDataHelper; 61 62 /** 63 * Retrieves and displays the currently logged location data from file 64 * 65 * @param icicle 66 */ 67 @Override 68 protected void onCreate(Bundle icicle) { 69 super.onCreate(icicle); 70 71 mDataHelper = new TrackerListHelper(this); 72 mDataHelper.bindListUI(R.layout.entrylist_item); 73 } 74 75 /** 76 * Builds the menu 77 * 78 * @param menu - menu to add items to 79 */ 80 @Override 81 public boolean onCreateOptionsMenu(Menu menu) { 82 MenuInflater menuInflater = getMenuInflater(); 83 menuInflater.inflate(R.menu.menu, menu); 84 return true; 85 } 86 87 /** 88 * Handles menu item selection 89 * 90 * @param item - the selected menu item 91 */ 92 @Override 93 public boolean onOptionsItemSelected(MenuItem item) { 94 switch (item.getItemId()) { 95 case R.id.start_service_menu: { 96 startService(new Intent(TrackerActivity.this, 97 TrackerService.class)); 98 break; 99 } 100 case R.id.stop_service_menu: { 101 stopService(new Intent(TrackerActivity.this, 102 TrackerService.class)); 103 break; 104 } 105 case R.id.settings_menu: { 106 launchSettings(); 107 break; 108 } 109 case R.id.export_kml: { 110 exportKML(); 111 break; 112 } 113 case R.id.export_csv: { 114 exportCSV(); 115 break; 116 } 117 case R.id.clear_data_menu: { 118 clearData(); 119 break; 120 } 121 } 122 return super.onOptionsItemSelected(item); 123 } 124 125 private void clearData() { 126 Runnable clearAction = new Runnable() { 127 public void run() { 128 TrackerDataHelper helper = 129 new TrackerDataHelper(TrackerActivity.this); 130 helper.deleteAll(); 131 } 132 }; 133 showConfirm(R.string.delete_confirm, clearAction); 134 } 135 136 private void showConfirm(int textId, final Runnable onConfirmAction) { 137 AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); 138 dialogBuilder.setTitle(R.string.confirm_title); 139 dialogBuilder.setMessage(textId); 140 dialogBuilder.setPositiveButton(android.R.string.ok, 141 new OnClickListener() { 142 public void onClick(DialogInterface dialog, int which) { 143 onConfirmAction.run(); 144 } 145 }); 146 dialogBuilder.setNegativeButton(android.R.string.cancel, 147 new OnClickListener() { 148 public void onClick(DialogInterface dialog, int which) { 149 // do nothing 150 } 151 }); 152 dialogBuilder.show(); 153 } 154 155 private void exportCSV() { 156 String exportFileName = getUniqueFileName("csv"); 157 exportFile(null, exportFileName, new TrackerDataHelper(this, 158 TrackerDataHelper.CSV_FORMATTER)); 159 } 160 161 private void exportKML() { 162 String exportFileName = getUniqueFileName( 163 LocationManager.NETWORK_PROVIDER + ".kml"); 164 exportFile(LocationManager.NETWORK_PROVIDER, exportFileName, 165 new TrackerDataHelper(this, TrackerDataHelper.KML_FORMATTER)); 166 exportFileName = getUniqueFileName( 167 LocationManager.GPS_PROVIDER + ".kml"); 168 exportFile(LocationManager.GPS_PROVIDER, exportFileName, 169 new TrackerDataHelper(this, TrackerDataHelper.KML_FORMATTER)); 170 } 171 172 private void exportFile(String tagFilter, 173 String exportFileName, 174 TrackerDataHelper trackerData) { 175 BufferedWriter exportWriter = null; 176 Cursor cursor = trackerData.query(tagFilter); 177 try { 178 exportWriter = new BufferedWriter(new FileWriter(exportFileName)); 179 exportWriter.write(trackerData.getOutputHeader()); 180 181 String line = null; 182 183 while ((line = trackerData.getNextOutput(cursor)) != null) { 184 exportWriter.write(line); 185 } 186 exportWriter.write(trackerData.getOutputFooter()); 187 Toast.makeText(this, "Successfully exported data to " + 188 exportFileName, Toast.LENGTH_SHORT).show(); 189 190 } catch (IOException e) { 191 Toast.makeText(this, "Error exporting file: " + 192 e.getLocalizedMessage(), Toast.LENGTH_SHORT).show(); 193 194 Log.e(LOG_TAG, "Error exporting file", e); 195 } finally { 196 closeWriter(exportWriter); 197 if (cursor != null) { 198 cursor.close(); 199 } 200 } 201 } 202 203 private void closeWriter(Writer exportWriter) { 204 if (exportWriter != null) { 205 try { 206 exportWriter.close(); 207 } catch (IOException e) { 208 Log.e(LOG_TAG, "error closing file", e); 209 } 210 } 211 } 212 213 private String getUniqueFileName(String ext) { 214 File dir = new File(Environment.getExternalStorageDirectory() + "/locationtracker"); 215 if (!dir.exists()) { 216 dir.mkdir(); 217 } 218 return dir + "/tracking-" + DateUtils.getCurrentTimestamp() + "." + ext; 219 } 220 221 private void launchSettings() { 222 Intent settingsIntent = new Intent(); 223 settingsIntent.setClass(this, SettingsActivity.class); 224 startActivity(settingsIntent); 225 } 226 } 227
