android應用 自動更新，自動安裝

監測是否需要升級：

PackageManager packageManager = MainActivity.getInstance().getPackageManager();PackageInfo packInfo;try{    packInfo = packageManager.getPackageInfo(MainActivity.getInstance().getPackageName(), 0);    String version = packInfo.versionName;    String serverVersion = NetSend.getInstance().getVersion();    ProjectMacro.apkVersion = version;    if (!serverVersion.equals(version))    {        showUpdataDialog();    }}catch (NameNotFoundException e){   e.printStackTrace();}

擷取伺服器版本：

public String getVersion(){    String result = null;    URL url = null;    HttpURLConnection connection = null;    InputStreamReader in = null;    try    {       url = new URL(ProjectMacro.URL_VER_COM);       connection = (HttpURLConnection)url.openConnection();       in = new InputStreamReader(connection.getInputStream());       BufferedReader bufferedReader = new BufferedReader(in);       StringBuffer strBuffer = new StringBuffer();       String line = null;       while ((line = bufferedReader.readLine()) != null)       {          strBuffer.append(line);       }       result = strBuffer.toString().trim();       }       catch (Exception e)       {           e.printStackTrace();       }       finally       {          if (connection != null)          {              connection.disconnect();          }          if (in != null)          {              try              {                  in.close();              }              catch (IOException e)              {                  e.printStackTrace();              }          }            }        return result;    }

下載線程和自動安裝[分為：存在sdcard中的和存在手機記憶體中的]

    private NotificationManager mNotificationManager;        private Notification mNotification;        private static final int HANDLER_MESSAGE_START_DOWNLOADING = 0;        private static final int HANDLER_MESSAGE_IS_DOWNLOADING = 1;        private static final int HANDLER_MESSAGE_DOWNLOAD_COMPLETE = 2;        private static final int HANDLER_MESSAGE_INSTALL_COMPLETE = 3;        private static final int CURRENT_NETWORK_ERROR = 10000;        private DownloadThread thread = new DownloadThread();        private boolean isStopDownload;        /**     * DownloadBinder中定義了一些實用的方法     *      * @author user     *      */    public class DownloadThread extends Thread    {                @Override        public void run()        {            super.run();            startDownload();        }    }        private Handler mUpdateHandler = new Handler()    {        public void handleMessage(Message msg)        {            switch (msg.what)            {                case HANDLER_MESSAGE_START_DOWNLOADING:                    setUpNotification();                    break;                case HANDLER_MESSAGE_IS_DOWNLOADING:                    setCurrentProgressInfo(msg.arg1, msg.arg2);                    break;                case HANDLER_MESSAGE_DOWNLOAD_COMPLETE:                    setUpOkNotification();                    thread.interrupt();                    Toast.makeText(MainActivity.getInstance(), "下載完成！", Toast.LENGTH_SHORT).show();                    break;                case HANDLER_MESSAGE_INSTALL_COMPLETE:                    break;                case CURRENT_NETWORK_ERROR:                    if (thread != null)                    {                        thread.interrupt();                    }                    showToast("網路異常", 2);                    break;                default:                    break;            }        };    };        /**     * 設定當前進度資訊     *      * @param currentProgress     * @param totalSize     */    private void setCurrentProgressInfo(int currentProgress, int totalSize)    {        // 更新進度        RemoteViews contentView = mNotification.contentView;        contentView.setTextViewText(R.id.download_file_tempsize, "" + currentProgress + "Kb");        contentView.setTextViewText(R.id.download_file_size, "" + totalSize + "Kb");        contentView.setProgressBar(R.id.download_file_progressBar, 100, (int)(currentProgress * 100 / totalSize), false);        mNotificationManager.notify(R.string.app_name, mNotification);    }        /**     * 設定下載通知     */    private void setUpNotification()    {                mNotificationManager =            (NotificationManager)MainActivity.getInstance().getSystemService(Context.NOTIFICATION_SERVICE);        mNotification = new Notification(R.drawable.ic_launcher, "正在下載", System.currentTimeMillis());        mNotification.flags = Notification.FLAG_ONGOING_EVENT;        RemoteViews rv =            new RemoteViews(MainActivity.getInstance().getPackageName(), R.layout.update_download_apk_progressbar);        mNotification.contentView = rv;        Intent intent = new Intent();        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        PendingIntent contentIntent =            PendingIntent.getActivity(MainActivity.getInstance(),                R.string.app_name,                intent,                PendingIntent.FLAG_UPDATE_CURRENT);        mNotification.contentIntent = contentIntent;        mNotificationManager.notify(R.string.app_name, mNotification);            }        /**     * 下載完成     */    private void setUpOkNotification()    {        mNotification.flags = Notification.FLAG_AUTO_CANCEL;        mNotification.contentView = null;        File file = null;        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))        {            //sdCard存在,升級APK放在sdCard中            file = new File(Environment.getExternalStorageDirectory(), "MIQ.apk");        }        else        {            //sdCard不存在, 升級APK放在本機存放區中            file = new File(getCacheDir().getAbsolutePath() + File.separator + "download", "MIQ.apk");        }                Intent intent = new Intent();        intent.setAction(android.content.Intent.ACTION_VIEW);        intent.addCategory(Intent.CATEGORY_DEFAULT);        intent.setComponent(new ComponentName("com.android.packageinstaller", "com.android.packageinstaller.PackageInstallerActivity"));        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");        startActivity(intent);                PendingIntent contentIntent =            PendingIntent.getActivity(MainActivity.getInstance(),                R.string.app_name,                intent,                PendingIntent.FLAG_UPDATE_CURRENT);        mNotification.contentIntent = contentIntent;        mNotification.setLatestEventInfo(MainActivity.getInstance(), "下載完成", "檔案已下載完畢", contentIntent);        mNotificationManager.notify(R.string.app_name, mNotification);    }        /**     * 下載模組     */    private void startDownload()    {         Message msg = mUpdateHandler.obtainMessage();        msg.what = HANDLER_MESSAGE_START_DOWNLOADING;        msg.arg1 = 0;        mUpdateHandler.sendMessage(msg);        HttpClient client = new DefaultHttpClient();        HttpParams httpParams = client.getParams();        HttpConnectionParams.setConnectionTimeout(httpParams, 1000 * 60);        HttpConnectionParams.setSoTimeout(httpParams, 1000 * 60);        ConnManagerParams.setTimeout(httpParams, 1000 * 60);        HttpGet get = new HttpGet(ProjectMacro.URL_DOWN_COM);        HttpResponse response;        try        {            response = client.execute(get);            HttpEntity entity = response.getEntity();            long length = entity.getContentLength();            Log.i("DownLoadNewAppSer", "length is " + length);            InputStream is = entity.getContent();            FileOutputStream fileOutputStream = null;            File file = null;            if (is != null)            {                if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))                {                    //sdCard存在                    file = new File(Environment.getExternalStorageDirectory(), "MIQ.apk");                }                else                {                    //sdCard不存在                    String apkPath = getCacheDir().getAbsolutePath() + File.separator + "download";                    String apkName = "MIQ.apk";                    file = new File(apkPath, apkName);                    if (!file.getParentFile().exists())                    {                        file.getParentFile().mkdirs();                    }                }                fileOutputStream = new FileOutputStream(file);                byte[] buf = new byte[2048];                int ch = -1;                int count = 0;                long startTime = System.currentTimeMillis();                while ((ch = is.read(buf)) != -1)                {                    if (!NetUtil.checkNet(MainActivity.getInstance()))                    {                        msg.what = CURRENT_NETWORK_ERROR;                        mUpdateHandler.sendMessage(msg);                        return;                    }                                        long endTime = System.currentTimeMillis();                    fileOutputStream.write(buf, 0, ch);                    count += ch;                    // ------ 下載完成一點發送Message通知handler更新下進度                    if (isStopDownload != true)                    {                        if (endTime - startTime > 1000)                        {                            // 一秒種更新一次                            msg = mUpdateHandler.obtainMessage();                            msg.what = HANDLER_MESSAGE_IS_DOWNLOADING;                            msg.arg1 = (count / 1024);                            msg.arg2 = (int)(length / 1024);                            mUpdateHandler.sendMessage(msg);                            startTime = endTime;                        }                        isStopDownload = false;                    }                                    }                String permission = "755";                // 下載的檔案夾要具有RX許可權(可以進入檔案夾的前提)                String filesCom = "chmod " + permission + " " + file.getParentFile().getAbsolutePath();                // 下載的檔案apk為android的應用程式 需要具有x的許可權，也就是可執行檔許可權，才能安裝                String apkComm = "chmod " + permission + " " + file.getAbsolutePath();                // String apkComm = "chmod -R " + permission + " " + apkPath + "/"                // + apkName;//不支援 -R選項                Runtime runtime = Runtime.getRuntime();                runtime.exec(filesCom);                runtime.exec(apkComm);            }            fileOutputStream.flush();            if (fileOutputStream != null)            {                fileOutputStream.close();            }            // ------下載完成發送Message通知handler            if (isStopDownload != true)            {                 msg = mUpdateHandler.obtainMessage();                 msg.what = HANDLER_MESSAGE_DOWNLOAD_COMPLETE;                 mUpdateHandler.sendMessage(msg);                 isStopDownload = false;            }                        try            {                Thread.sleep(10);            }            catch (InterruptedException e)            {                e.printStackTrace();            }        }        catch (ClientProtocolException e)        {            e.printStackTrace();        }        catch (IOException e)        {            e.printStackTrace();        }            }        protected void showUpdataDialog()    {        AlertDialog.Builder builer = new Builder(MainActivity.getInstance());        builer.setTitle("版本升級");        builer.setMessage("檢測到最新版本，請及時更新");        builer.setPositiveButton("確定", new OnClickListener()        {            public void onClick(DialogInterface dialog, int which)            {                thread.start();            }        });        builer.setNegativeButton("取消", new OnClickListener()        {            public void onClick(DialogInterface dialog, int which)            {                            }        });        builer.create();        builer.show();    }

update_download_apk_progressbar.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/download_file_progress_layout"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:focusable="true"    android:focusableInTouchMode="true"    android:orientation="horizontal" >    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:background="@drawable/ic_launcher" />    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="vertical" >        <RelativeLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content" >            <TextView                android:id="@+id/text"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:padding="3dp"                android:text="下載新版本中"                android:textColor="#FFFFFF"                android:textSize="16sp" />            <LinearLayout                android:id="@+id/downloud_progress_layout"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_toRightOf="@+id/text" >                <TextView                    android:id="@+id/download_file_tempsize"                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:padding="3dp"                    android:text="0 kb"                    android:textColor="#FFFFFF" />                <TextView                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:layout_marginLeft="3dp"                    android:layout_marginRight="3dp"                    android:text="/"                    android:textColor="#FFFFFF" />                <TextView                    android:id="@+id/download_file_size"                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:text="0 kb"                    android:textColor="#FFFFFF" />            </LinearLayout>            <ImageButton                android:id="@+id/stop_download"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_alignParentRight="true"                android:layout_marginRight="120dp"                android:background="@drawable/stop_download_btn"                android:visibility="gone" />        </RelativeLayout>        <ProgressBar            android:id="@+id/download_file_progressBar"            style="?android:attr/progressBarStyleHorizontal"            android:layout_width="240dp"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:padding="3dp"            android:progressDrawable="@drawable/download_progressbar" />    </LinearLayout></LinearLayout>

添加許可權：

    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.WRITE_OWNER_DATA" />