forked from upstream-mirrors/OpenTracks
merge heads
This commit is contained in:
Jimmy Shih
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/*
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* Copyright 2012 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.android.apps.mytracks;
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import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
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import com.google.android.apps.mytracks.io.file.GpxImporter;
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import com.google.android.apps.mytracks.util.FileUtils;
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import com.google.android.apps.mytracks.util.SystemUtils;
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import com.google.android.maps.mytracks.R;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.os.AsyncTask;
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import android.os.PowerManager.WakeLock;
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import android.util.Log;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import javax.xml.parsers.ParserConfigurationException;
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import org.xml.sax.SAXException;
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/**
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* AsyncTask to import GPX files from the SD card.
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*
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* @author Jimmy Shih
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*/
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public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
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private static final String TAG = ImportAsyncTask.class.getSimpleName();
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private ImportActivity importActivity;
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private final boolean importAll;
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private final String path;
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private final MyTracksProviderUtils myTracksProviderUtils;
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private WakeLock wakeLock;
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// true if the AsyncTask result is success
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private boolean success;
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// true if the AsyncTask has completed
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private boolean completed;
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// number of files successfully imported
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private int successCount;
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// number of files to import
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private int totalCount;
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// the last successfully imported track id
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private long trackId;
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/**
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* Creates an AsyncTask.
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*
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* @param importActivity the activity currently associated with this AsyncTask
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* @param importAll true to import all GPX files
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* @param path path to import GPX files
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*/
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public ImportAsyncTask(ImportActivity importActivity, boolean importAll, String path) {
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this.importActivity = importActivity;
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this.importAll = importAll;
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this.path = path;
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myTracksProviderUtils = MyTracksProviderUtils.Factory.get(importActivity);
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SharedPreferences sharedPreferences = importActivity.getSharedPreferences(
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Constants.SETTINGS_NAME, Context.MODE_PRIVATE);
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long recordingTrackId = sharedPreferences.getLong(
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importActivity.getString(R.string.recording_track_key), -1L);
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// Get the wake lock if not recording
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if (recordingTrackId == -1L) {
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wakeLock = SystemUtils.acquireWakeLock(importActivity, wakeLock);
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}
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success = false;
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completed = false;
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successCount = 0;
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totalCount = 0;
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trackId = -1L;
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}
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/**
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* Sets the current {@link ImportActivity} associated with this AyncTask.
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*
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* @param importActivity the current {@link ImportActivity}, can be null
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*/
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public void setActivity(ImportActivity importActivity) {
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this.importActivity = importActivity;
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if (completed && importActivity != null) {
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importActivity.onAsyncTaskCompleted(success, successCount, totalCount, trackId);
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}
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}
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@Override
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protected void onPreExecute() {
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if (importActivity != null) {
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importActivity.showProgressDialog();
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}
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}
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@Override
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protected Boolean doInBackground(Void... params) {
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try {
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if (!FileUtils.isSdCardAvailable()) {
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return false;
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}
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List<File> files = getFiles();
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totalCount = files.size();
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if (totalCount == 0) {
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return true;
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}
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for (int i = 0; i < totalCount; i++) {
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if (isCancelled()) {
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// If cancelled, return true to show the number of files imported
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return true;
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}
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File file = files.get(i);
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if (importFile(file)) {
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successCount++;
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}
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publishProgress(i + 1, totalCount);
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}
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return true;
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} finally {
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// Release the wake lock if obtained
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if (wakeLock != null && wakeLock.isHeld()) {
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wakeLock.release();
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}
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}
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}
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@Override
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protected void onProgressUpdate(Integer... values) {
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if (importActivity != null) {
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importActivity.setProgressDialogValue(values[0], values[1]);
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}
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}
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@Override
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protected void onPostExecute(Boolean result) {
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success = result;
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completed = true;
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if (importActivity != null) {
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importActivity.onAsyncTaskCompleted(success, successCount, totalCount, trackId);
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}
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}
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/**
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* Imports a GPX file.
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*
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* @param file the file
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*/
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private boolean importFile(final File file) {
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try {
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long trackIds[] = GpxImporter.importGPXFile(new FileInputStream(file), myTracksProviderUtils);
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int length = trackIds.length;
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if (length > 0) {
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trackId = trackIds[length - 1];
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}
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return true;
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} catch (FileNotFoundException e) {
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Log.d(TAG, "file: " + file.getAbsolutePath(), e);
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return false;
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} catch (ParserConfigurationException e) {
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Log.d(TAG, "file: " + file.getAbsolutePath(), e);
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return false;
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} catch (SAXException e) {
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Log.d(TAG, "file: " + file.getAbsolutePath(), e);
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return false;
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} catch (IOException e) {
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Log.d(TAG, "file: " + file.getAbsolutePath(), e);
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return false;
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}
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}
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/**
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* Gets a list of GPX files. If importAll is true, returns a list of GPX files
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* under the path directory. If importAll is false, returns a list containing
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* just the path file.
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*/
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private List<File> getFiles() {
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List<File> files = new ArrayList<File>();
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File file = new File(path);
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if (importAll) {
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File[] candidates = file.listFiles();
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if (candidates != null) {
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for (File candidate : candidates) {
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if (!candidate.isDirectory() && candidate.getName().endsWith(".gpx")) {
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files.add(candidate);
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}
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}
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}
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} else {
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files.add(file);
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}
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return files;
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}
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}
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