Java tutorial
/******************************************************************************* * Copyright 2011, 2012, 2013 fanfou.com, Xiaoke, Zhang * * 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.fanfou.app.opensource.service; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; import android.annotation.SuppressLint; import android.app.AlarmManager; import android.app.AlertDialog; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Handler; import android.os.Message; import android.text.TextUtils; import android.util.Log; import android.webkit.MimeTypeMap; import android.widget.RemoteViews; import com.fanfou.app.opensource.AppContext; import com.fanfou.app.opensource.NewVersionPage; import com.fanfou.app.opensource.R; import com.fanfou.app.opensource.http.SimpleClient; import com.fanfou.app.opensource.update.AppVersionInfo; import com.fanfou.app.opensource.util.CommonHelper; import com.fanfou.app.opensource.util.IOHelper; /** * @author mcxiaoke * @version 1.0 2011.09.04 * @version 2.0 2011.10.31 * @version 2.1 2011.11.24 * @version 2.2 2011.11.25 * @version 2.3 2011.11.28 * @version 2.4 2011.12.02 * @version 2.5 2011.12.19 * @version 2.6 2011.12.30 * @version 2.7 2012.01.05 * @version 2.8 2012.01.16 * */ public class DownloadService extends BaseIntentService { @SuppressLint("HandlerLeak") private class DownloadHandler extends Handler { private static final long UPDATE_TIME = 1500; private long lastTime = 0; @Override public void handleMessage(final Message msg) { if (AppContext.DEBUG) { log("DownloadHandler what=" + msg.what + " progress=" + msg.arg1); } if (DownloadService.MSG_PROGRESS == msg.what) { final long now = System.currentTimeMillis(); if ((now - this.lastTime) < DownloadHandler.UPDATE_TIME) { return; } final int progress = msg.arg1; updateProgress(progress); this.lastTime = System.currentTimeMillis(); } else if (DownloadService.MSG_SUCCESS == msg.what) { DownloadService.this.nm.cancel(DownloadService.NOTIFICATION_PROGRESS_ID); final String filePath = msg.getData().getString(Constants.EXTRA_FILENAME); CommonHelper.open(DownloadService.this, filePath); } } } private static final String TAG = DownloadService.class.getSimpleName(); public static final String UPDATE_VERSION_FILE = "http://apps.fanfou.com/android/update.json"; private static final int NOTIFICATION_PROGRESS_ID = -12345; public static final long AUTO_UPDATE_INTERVAL = 2 * 3600 * 1000L; private NotificationManager nm; private Notification notification; private Handler mHandler; public static final int TYPE_CHECK = 0; public static final int TYPE_DOWNLOAD = 1; private static final int MSG_PROGRESS = 0; private static final int MSG_SUCCESS = 1; public static AppVersionInfo fetchVersionInfo() { final SimpleClient client = new SimpleClient(AppContext.getAppContext()); try { final HttpResponse response = client.get(DownloadService.UPDATE_VERSION_FILE); final int statusCode = response.getStatusLine().getStatusCode(); if (AppContext.DEBUG) { Log.d(DownloadService.TAG, "statusCode=" + statusCode); } if (statusCode == 200) { final String content = EntityUtils.toString(response.getEntity(), HTTP.UTF_8); if (AppContext.DEBUG) { Log.d(DownloadService.TAG, "response=" + content); } return AppVersionInfo.parse(content); } } catch (final IOException e) { if (AppContext.DEBUG) { e.printStackTrace(); } } catch (final Exception e) { if (AppContext.DEBUG) { e.printStackTrace(); } } finally { } return null; } public static Intent getNewVersionIntent(final Context context, final AppVersionInfo info) { final Intent intent = new Intent(context, NewVersionPage.class); intent.putExtra(Constants.EXTRA_DATA, info); return intent; } private final static PendingIntent getPendingIntent(final Context context) { final Intent intent = new Intent(context, DownloadService.class); intent.putExtra(Constants.EXTRA_TYPE, DownloadService.TYPE_CHECK); final PendingIntent pi = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); return pi; } public static void notifyUpdate(final AppVersionInfo info, final Context context) { final String versionInfo = info.versionName; final NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); final Notification notification = new Notification(R.drawable.ic_notify_icon, "?" + versionInfo, System.currentTimeMillis()); final PendingIntent contentIntent = PendingIntent.getActivity(context, 0, DownloadService.getNewVersionIntent(context, info), 0); notification.setLatestEventInfo(context, "?" + versionInfo, "", contentIntent); notification.flags |= Notification.FLAG_AUTO_CANCEL; nm.notify(2, notification); } public static void showUpdateConfirmDialog(final Context context, final AppVersionInfo info) { final DialogInterface.OnClickListener downListener = new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { DownloadService.startDownload(context, info); } }; final AlertDialog.Builder builder = new AlertDialog.Builder(context); builder.setTitle("???").setCancelable(true).setNegativeButton("??", null); builder.setPositiveButton("??", downListener); final StringBuffer sb = new StringBuffer(); sb.append("").append(AppContext.appVersionName).append("(Build") .append(AppContext.appVersionCode).append(")"); sb.append("\n").append(info.versionName).append("(Build").append(info.versionCode) .append(")"); sb.append("\n").append(info.releaseDate); sb.append("\n").append(info.forceUpdate ? "???" : "?"); sb.append("\n\n").append(info.changelog); builder.setMessage(sb.toString()); final AlertDialog dialog = builder.create(); dialog.show(); } public static void startDownload(final Context context, final AppVersionInfo info) { final Intent intent = new Intent(context, DownloadService.class); intent.putExtra(Constants.EXTRA_TYPE, DownloadService.TYPE_DOWNLOAD); intent.putExtra(Constants.EXTRA_URL, info); context.startService(intent); } public static void unset(final Context context) { final AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); am.cancel(DownloadService.getPendingIntent(context)); if (AppContext.DEBUG) { Log.d(DownloadService.TAG, "unset"); } } public DownloadService() { super("DownloadService"); } private void check() { final AppVersionInfo info = DownloadService.fetchVersionInfo(); if (AppContext.DEBUG) { Log.d(DownloadService.TAG, "check() VersionInfo=" + info); if (info != null) { DownloadService.notifyUpdate(info, this); return; } } if ((info != null) && (info.versionCode > AppContext.appVersionCode)) { DownloadService.notifyUpdate(info, this); } } private void download(final AppVersionInfo info) { if ((info == null) || TextUtils.isEmpty(info.downloadUrl)) { return; } showProgress(); final String url = info.downloadUrl; final int versionCode = info.versionCode; if (AppContext.DEBUG) { Log.v(DownloadService.TAG, "download apk file url: " + url + " versionCode:" + versionCode); } InputStream is = null; BufferedOutputStream bos = null; final SimpleClient client = new SimpleClient(AppContext.getAppContext()); boolean needDownload = true; final File file = new File(IOHelper.getDownloadDir(this), "fanfouapp_" + versionCode + ".apk"); try { final HttpResponse response = client.get(url); final int statusCode = response.getStatusLine().getStatusCode(); if (statusCode == 200) { final HttpEntity entity = response.getEntity(); final long totalSize = entity.getContentLength(); long download = 0; if (file.exists() && file.isFile() && (file.length() == totalSize)) { needDownload = false; download = totalSize; if (AppContext.DEBUG) { Log.v(DownloadService.TAG, "download apk file is already exists: " + file.getAbsolutePath()); } } if (needDownload) { is = entity.getContent(); bos = new BufferedOutputStream(new FileOutputStream(file)); final byte[] buffer = new byte[8196]; int read = -1; while ((read = is.read(buffer)) != -1) { bos.write(buffer, 0, read); download += read; final int progress = (int) ((100.0 * download) / totalSize); sendProgressMessage(progress); if (AppContext.DEBUG) { log("progress=" + progress); } } bos.flush(); } if (download >= totalSize) { sendSuccessMessage(file); } } } catch (final IOException e) { if (AppContext.DEBUG) { Log.e(DownloadService.TAG, "download error: " + e.getMessage()); e.printStackTrace(); } } finally { this.nm.cancel(DownloadService.NOTIFICATION_PROGRESS_ID); IOHelper.forceClose(is); IOHelper.forceClose(bos); } } @SuppressWarnings("unused") private PendingIntent getInstallPendingIntent(final String fileName) { final String mimeType = MimeTypeMap.getSingleton() .getMimeTypeFromExtension(CommonHelper.getExtension(fileName)); if (mimeType != null) { final Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(new File(fileName)), mimeType); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); final PendingIntent pi = PendingIntent.getActivity(this, 0, intent, 0); return pi; } return null; } private void log(final String message) { Log.d("DownloadService", message); } @Override public void onCreate() { super.onCreate(); this.mHandler = new DownloadHandler(); } @Override protected void onHandleIntent(final Intent intent) { this.nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); final int type = intent.getIntExtra(Constants.EXTRA_TYPE, DownloadService.TYPE_CHECK); if (AppContext.DEBUG) { Log.d(DownloadService.TAG, "onHandleIntent type=" + type); } if (type == DownloadService.TYPE_CHECK) { check(); } else if (type == DownloadService.TYPE_DOWNLOAD) { final AppVersionInfo info = intent.getParcelableExtra(Constants.EXTRA_URL); log("onHandleIntent TYPE_DOWNLOAD info=" + info); if ((info != null) && !TextUtils.isEmpty(info.downloadUrl)) { download(info); } } } private void sendProgressMessage(final int progress) { final Message message = new Message(); message.what = DownloadService.MSG_PROGRESS; message.arg1 = progress; this.mHandler.sendMessage(message); } private void sendSuccessMessage(final File file) { final Message message = new Message(); message.what = DownloadService.MSG_SUCCESS; message.getData().putString(Constants.EXTRA_FILENAME, file.getAbsolutePath()); this.mHandler.sendMessage(message); } private void showProgress() { this.notification = new Notification(R.drawable.ic_notify_download, "?", System.currentTimeMillis()); this.notification.flags |= Notification.FLAG_ONGOING_EVENT; this.notification.flags |= Notification.FLAG_AUTO_CANCEL; this.notification.contentIntent = PendingIntent.getActivity(this, 0, new Intent(), 0); final RemoteViews view = new RemoteViews(getPackageName(), R.layout.download_notification); view.setTextViewText(R.id.download_notification_text, "? 0%"); view.setProgressBar(R.id.download_notification_progress, 100, 0, false); this.notification.contentView = view; this.nm.notify(DownloadService.NOTIFICATION_PROGRESS_ID, this.notification); } private void updateProgress(final int progress) { final RemoteViews view = new RemoteViews(getPackageName(), R.layout.download_notification); view.setTextViewText(R.id.download_notification_text, "? " + progress + "%"); view.setInt(R.id.download_notification_progress, "setProgress", progress); this.notification.contentView = view; this.nm.notify(DownloadService.NOTIFICATION_PROGRESS_ID, this.notification); } }