Android 自动检测更新，自动下载apk更新版本

public IBinder onBind(Intent intent) {

    // TODO Auto-generated method stub

    return null;

}



@Override

public int onStartCommand(Intent intent, int flags, int startId) {

    // TODO Auto-generated method stub

    // 获取传值

    titleId = intent.getIntExtra("titleId", 0);

// String strVersion=intent.getStringExtra(APK_VERSION);

    strAppUrl = intent.getStringExtra(APK_UIL);

// strAppUrl = MyShareUtil.getSharedString(R.string.APP_UPDATE_URL);

    // 创建文件

    if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {

        updateDir = new File(Environment.getExternalStorageDirectory(), "data/com.tianxin.mapclient.liteapp");

        updateFile = new File(updateDir.getPath(), getResources().getString(titleId)  +"_V"+".apk");

        Log.i("lgq","file======"+updateFile);

    }

    this.updateNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

    this.updateNotification = new Notification();

    this.updateNotification.flags = Notification.FLAG_AUTO_CANCEL;



    new Thread(new UpdateRunner()).start();



    return super.onStartCommand(intent, flags, startId);

}



private Handler updateHandler = new Handler() {

    @Override

    public void handleMessage(Message msg) {

        switch (msg.what) {

            case 1:

                // 自动安装新版本

                Log.e("自动安装新版本", updateFile.getName());

                updateNotificationManager.cancel(0);

                Intent installIntent = new Intent();

                installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                installIntent.setAction(Intent.ACTION_VIEW);

                installIntent.setDataAndType(Uri.fromFile(updateFile), "application/vnd.android.package-archive");

                startActivity(installIntent);



                // 停止服务

                stopSelf();

                break;

            case 0:

                // 下载失败

// Notification.Builder builder = new Notification.Builder(this);//新建Notification.Builder对象

// PendingIntent tintent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), 0);

// builder.setContentTitle(“开始下载”);

// builder.setContentText( “圆心部落 0%”);

// builder.setSmallIcon(R.mipmap.app);

// builder.setContentIntent(tintent);//执行intent

// updateNotification = builder.getNotification();//将builder对象转换为普通的notification

// updateNotification.setLatestEventInfo(UpdateAppService.this, getApplicationContext().getResources().getString(R.string.app_name), “下载失败”, null);

// updateNotificationManager.notify(0, updateNotification);

                stopSelf();

                break;

            default:

                stopSelf();

        }

    }

};



class UpdateRunner implements Runnable {

    Message message = updateHandler.obtainMessage();



    @Override

    public void run() {

        // TODO Auto-generated method stub

        message.what = 1;

        try {

            if (!updateDir.exists()) {

                updateDir.mkdirs();

            }

            if (!updateFile.exists()) {

                updateFile.createNewFile();

            }

            Log.i("lgq下载地址", strAppUrl);

            long downloadSize = downloadUpdateFile(strAppUrl, updateFile);

            if (downloadSize > 0) {

                // 下载成功

                updateHandler.sendMessage(message);

            }

        } catch (Exception ex) {

            ex.printStackTrace();

            message.what = 0;

            // 下载失败

            updateHandler.sendMessage(message);

        }

    }



}



public long downloadUpdateFile(String downloadUrl, File saveFile)

        throws Exception {

    int downloadCount = 0;

    int currentSize = 0;

    long totalSize = 0;

    int updateTotalSize = 0;

    PendingIntent Pendingintent = PendingIntent.getActivity(UpdateAppService.this, 0, new Intent(Intent.ACTION_VIEW), 0);



    HttpURLConnection httpConnection = null;

    InputStream is = null;

    FileOutputStream fos = null;



    try {

        URL url = new URL(downloadUrl);

// URL url = new URL(“http://image.baidu.com/search/detail?ct=503316480&z=0&tn=baiduimagedetail&ipn=d&word=%E7%BD%91%E9%99%85%E9%A3%9E%E4%BE%A0%E7%9A%84%E4%BD%9C%E5%93%81&step_word=&ie=utf-8&in=&cl=undefined&lm=undefined&st=undefined&cs=97365977,1969139888&os=&simid=&pn=0&rn=1&di=0&fr=&fmq=1527155755045_R&fm=&ic=undefined&s=undefined&se=undefined&sme=&tab=0&width=undefined&height=undefined&face=undefined&is=0,0&istype=0&ist=&jit=undefined&bdtype=-1&spn=0&pi=49125372204&gsm=0&objurl=http%3A%2F%2Fe.hiphotos.baidu.com%2Fimage%2Fpic%2Fitem%2F500fd9f9d72a6059099ccd5a2334349b023bbae5.jpg&rpstart=0&rpnum=0&adpicid=0&catename=%E9%A3%8E%E5%85%89”);

        httpConnection = (HttpURLConnection) url.openConnection();

        httpConnection.setRequestProperty("User-Agent", "PacificHttpClient");

        if (currentSize > 0) {

            httpConnection.setRequestProperty("RANGE", "bytes=" + currentSize + "-");

        }

        httpConnection.setConnectTimeout(10000);

        httpConnection.setReadTimeout(20000);

        updateTotalSize = httpConnection.getContentLength();

        if (httpConnection.getResponseCode() == 404) {

            throw new Exception("fail!");

        }

        is = httpConnection.getInputStream();

        fos = new FileOutputStream(saveFile, false);

        byte buffer[] = new byte[4096];

        int readsize = 0;

        int persent = 0;

        while ((readsize = is.read(buffer)) > 0) {

            fos.write(buffer, 0, readsize);

            totalSize += readsize;

            persent = (int) totalSize * 100 / updateTotalSize;

            if ((downloadCount == 0) || persent - 1 > downloadCount) {

                Notification.Builder builder = new Notification.Builder(this);//新建Notification.Builder对象

                PendingIntent Pendingintentt = PendingIntent.getActivity(UpdateAppService.this, 0, new Intent(Intent.ACTION_VIEW), 0);

                builder.setContentTitle("开始下载");

                builder.setContentText( "正在下载"+ persent + "%");

                builder.setSmallIcon(R.mipmap.ic_launcher);

                builder.setContentIntent(Pendingintentt);//执行intent

                updateNotification = builder.getNotification();//将builder对象转换为普通的notification



                Log.i("lgqq","body=====MyServiceTestActivity====="+persent);

// updateNotification.setLatestEventInfo(UpdateAppService.this, “正在下载”, persent >= 0 ? persent + “%” :“努力下载中~”, null);

                downloadCount += 1;

                Log.v("lgq", persent + "%");

                updateNotificationManager.notify(0, updateNotification);

            }

        }

    } finally {

        if (httpConnection != null) {

            httpConnection.disconnect();

        }

        if (is != null) {

            is.close();

        }

        if (fos != null) {

            fos.close();

        }

    }

    return totalSize;

}

}

### 附：上面 updateNotificationManager.notify(0, updateNotification);，可不用。



使用进度条显示加载进度： [https://blog.youkuaiyun.com/meixi\_android/article/details/82456945]( )



配置service

查看是否更新版本

private void getwebvison() {

String url = Url.oneupdversion;//云版本控制链接

RequestParams params = new RequestParams();

AsyncHttpClient client = new AsyncHttpClient();

client.get(url, params, new TextHttpResponseHandler() {

    @Override

    public void onFailure(int i, Header[] headers, String s, Throwable throwable) {

        Toast.makeText(getContext(), "网络连接异常", Toast.LENGTH_SHORT).show();

    }



    @Override

    public void onSuccess(int i, Header[] headers, String s) {

        try {

            JSONObject object = new JSONObject(s);

            contentlg = object.getString("content");//更新内容

            urllg = object.getString("url");//apk下载链接

            int versionlg = object.getInt("version");//云版本号

            int loca = TxApplication.getVersionCode();//本地版本号

            if (versionlg > loca) {

                Intent updateIntent = new Intent(getContext(), UpdateAppService.class);

                updateIntent.putExtra("titleId", R.string.app_name);

                updateIntent.putExtra(UpdateAppService.APK_UIL, urllg);

                getActivity().startService(updateIntent);//开始下载

            }