Android更新工具包
实现的逻辑，创建一个UpdateManager类，单例模式构建。 第一步网络请求检测是否有更新，通过Handler对象发送消息，提示检测结果或者是否下载。
第二步下载安装包，通过Handler对象发送消息，更新进度条和完成后进行安装。下载的时候先放进临时文件，下载完成后改成正式的安装包名字。
/** * 应用程序更新工具包 */ public class UpdateManager { private static final int DOWN_NOSDCARD = 0; private static final int DOWN_UPDATE = 1; private static final int DOWN_OVER = 2; private static final int DIALOG_TYPE_LATEST = 0; private static final int DIALOG_TYPE_FAIL = 1; private static UpdateManager updateManager; private Context mContext; //通知对话框 private Dialog noticeDialog; //下载对话框 private Dialog downloadDialog; //'已经是最新' 或者 '无法获取最新版本' 的对话框 private Dialog latestOrFailDialog; //进度条 private ProgressBar mProgress; //显示下载数值 private TextView mProgressText; //查询动画 private ProgressDialog mProDialog; //进度值 private int progress; //下载线程 private Thread downLoadThread; //终止标记 private boolean interceptFlag; //提示语 private String updateMsg = ""; //返回的安装包url private String apkUrl = ""; //下载包保存路径 private String savePath = ""; //apk保存完整路径 private String apkFilePath = ""; //临时下载文件路径 private String tmpFilePath = ""; //下载文件大小 private String apkFileSize; //已下载文件大小 private String tmpFileSize; private String curVersionName = ""; private int curVersionCode; private Update mUpdate; private String mUpdateVersion; private Handler mHandler = new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case DOWN_UPDATE: mProgress.setProgress(progress); mProgressText.setText(tmpFileSize + "/" + apkFileSize); break; case DOWN_OVER: downloadDialog.dismiss(); installApk(); break; case DOWN_NOSDCARD: downloadDialog.dismiss(); //Toast.makeText(mContext, "无法下载安装文件，请检查SD卡是否挂载").show(); break; } }; }; public static UpdateManager getUpdateManager() { if(updateManager == null){ updateManager = new UpdateManager(); } updateManager.interceptFlag = false; return updateManager; } /** * 检查App更新 * @param context * @param isShowMsg 是否显示提示消息 */ public void checkAppUpdate(Context context, final boolean isShowMsg){ this.mContext = context; getCurrentVersion(); if(isShowMsg){ if(mProDialog == null) mProDialog = ProgressDialog.show(mContext, null, "正在检测，请稍后...", true, true); else if(mProDialog.isShowing() || (latestOrFailDialog!=null && latestOrFailDialog.isShowing())) return; } final Handler handler = new Handler(){ public void handleMessage(Message msg) { //进度条对话框不显示 - 检测结果也不显示 if(mProDialog != null && !mProDialog.isShowing()){ return; } //关闭并释放释放进度条对话框 if(isShowMsg && mProDialog != null){ mProDialog.dismiss(); mProDialog = null; } //显示检测结果 if(msg.what == 1){ mUpdate = (Update)msg.obj; if(mUpdate != null ){//更新 if(!mUpdate.getVersionName().equals(AppConfig.APP_Version) ) { apkUrl = mUpdate.getDownloadUrl(); updateMsg =mUpdate.getUpdateLog(); showNoticeDialog(); } else if(isShowMsg){ showLatestOrFailDialog(DIALOG_TYPE_LATEST); } } }else if(isShowMsg){ showLatestOrFailDialog(DIALOG_TYPE_FAIL); } } }; new Thread(new Runnable() { @Override public void run() { Message msg = new Message(); Update update =new Update(); try { // Update update = ApiClient.checkVersion((AppContext)mContext.getApplicationContext()); Document doc = Jsoup.connect("url").timeout(30000).get(); Element e = doc.select("p.version").first(); update.setVersionName(e.ownText()); e = doc.select("p.desc").first(); update.setUpdateLog(e.ownText()); e = doc.select("p.url").first(); update.setDownloadUrl(e.ownText()); } catch (Exception e) { update.setVersionName(AppConfig.APP_Version); } msg.what = 1; msg.obj = update; handler.sendMessage(msg); } }).start(); } /** * 显示'已经是最新'或者'无法获取版本信息'对话框 */ private void showLatestOrFailDialog(int dialogType) { if (latestOrFailDialog != null) { //关闭并释放之前的对话框 latestOrFailDialog.dismiss(); latestOrFailDialog = null; } AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("系统提示"); if (dialogType == DIALOG_TYPE_LATEST) { builder.setMessage("您当前已经是最新版本"); } else if (dialogType == DIALOG_TYPE_FAIL) { builder.setMessage("无法获取版本更新信息"); } builder.setPositiveButton("确定", null); latestOrFailDialog = builder.create(); latestOrFailDialog.show(); } /** * 获取当前客户端版本信息 */ private void getCurrentVersion(){ try { PackageInfo info = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0); curVersionName = info.versionName; curVersionCode = info.versionCode; } catch (NameNotFoundException e) { e.printStackTrace(System.err); } } /** * 显示版本更新通知对话框 */ private void showNoticeDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("软件版本更新"); builder.setMessage(updateMsg); builder.setPositiveButton("立即更新", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); showDownloadDialog(); } }); builder.setNegativeButton("以后再说", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); noticeDialog = builder.create(); noticeDialog.show(); } /** * 显示下载对话框 */ private void showDownloadDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("正在下载新版本"); final LayoutInflater inflater = LayoutInflater.from(mContext); View v = inflater.inflate(R.layout.update_progress, null); mProgress = (ProgressBar)v.findViewById(R.id.update_progress); mProgressText = (TextView) v.findViewById(R.id.update_progress_text); builder.setView(v); builder.setNegativeButton("取消", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); interceptFlag = true; } }); builder.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { dialog.dismiss(); interceptFlag = true; } }); downloadDialog = builder.create(); downloadDialog.setCanceledOnTouchOutside(false); downloadDialog.show(); downloadApk(); } private Runnable mdownApkRunnable = new Runnable() { @Override public void run() { try { String apkName = "YourApp_"+mUpdate.getVersionName()+".apk"; String tmpApk = "YourApp_"+mUpdate.getVersionName()+".tmp"; //判断是否挂载了SD卡 String storageState = Environment.getExternalStorageState(); if(storageState.equals(Environment.MEDIA_MOUNTED)){ savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/YourApp/Update/"; File file = new File(savePath); if(!file.exists()){ file.mkdirs(); } apkFilePath = savePath + apkName; tmpFilePath = savePath + tmpApk; } //没有挂载SD卡，无法下载文件 if(apkFilePath == null || apkFilePath == ""){ mHandler.sendEmptyMessage(DOWN_NOSDCARD); return; } File ApkFile = new File(apkFilePath); //是否已下载更新文件 if(ApkFile.exists()){ downloadDialog.dismiss(); installApk(); return; } //输出临时下载文件 File tmpFile = new File(tmpFilePath); FileOutputStream fos = new FileOutputStream(tmpFile); URL url = new URL(apkUrl); HttpURLConnection conn = (HttpURLConnection)url.openConnection(); conn.connect(); int length = conn.getContentLength(); InputStream is = conn.getInputStream(); //显示文件大小格式：2个小数点显示 DecimalFormat df = new DecimalFormat("0.00"); //进度条下面显示的总文件大小 apkFileSize = df.format((float) length / 1024 / 1024) + "MB"; int count = 0; byte buf[] = new byte[1024]; do{ int numread = is.read(buf); count += numread; //进度条下面显示的当前下载文件大小 tmpFileSize = df.format((float) count / 1024 / 1024) + "MB"; //当前进度值 progress =(int)(((float)count / length) * 100); //更新进度 mHandler.sendEmptyMessage(DOWN_UPDATE); if(numread <= 0){ //下载完成 - 将临时下载文件转成APK文件 if(tmpFile.renameTo(ApkFile)){ //通知安装 mHandler.sendEmptyMessage(DOWN_OVER); } break; } fos.write(buf,0,numread); }while(!interceptFlag);//点击取消就停止下载 fos.close(); is.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch(IOException e){ e.printStackTrace(); } } }; /** * 下载apk */ private void downloadApk(){ downLoadThread = new Thread(mdownApkRunnable); downLoadThread.start(); } /** * 安装apk */ private void installApk(){ File apkfile = new File(apkFilePath); if (!apkfile.exists()) { return; } Intent i = new Intent(Intent.ACTION_VIEW); i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive"); mContext.startActivity(i); } }
