//获取服务器版本号

  HttpUtils utils_ver = new HttpUtils();

        utils_ver.send(HttpMethod.GET, Net_URL.VER_SION, new RequestCallBack<String>() {

            @Override

            public void onSuccess(ResponseInfo<String> responseInfo) {

                String result_ver = responseInfo.result;

                Gson g = new Gson();

                Vis_Big json = g.fromJson(result_ver, Vis_Big.class);

                list_v = json.getVersion();

                //判断更新

                update();

            }

            @Override

            public void onFailure(HttpException e, String s) {

                Toast.makeText(HomeActivity.this, "请检查网络连接", Toast.LENGTH_LONG).show();

            }

        });

 

//判断更新

 

 try {

            PackageManager manager = this.getPackageManager();

            PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);

            String version = info.versionName;

            System.out.println("版本号" + version + list_v.getVersion());

            if (version != list_v.getVersion()) {

                System.out.println("=========" + list_v.getVersion());

                initAlert();

            } else {

                Toast.makeText(getApplicationContext(), "要更新了", Toast.LENGTH_LONG).show();

            }

        } catch (PackageManager.NameNotFoundException e) {

            e.printStackTrace();

        } catch (Exception e) {

            e.printStackTrace();

        }

 

//自定义dialog

 

 try {

            Toast.makeText(getApplicationContext(), "更新给糖吃", Toast.LENGTH_LONG).show();

            AlertDialog.Builder builder = new AlertDialog.Builder(HomeActivity.this);

            builder.setTitle("亲！  快来更新啦");

            builder.setMessage("当前版本号为" + list_v.getVersion());

            builder.setPositiveButton("立即更新",

                    new DialogInterface.OnClickListener() {

                        public void onClick(DialogInterface dialog, int which) {

                            // 点击立即下载更新包

                            downLoadApk();

                        }

                    });

            builder.setNegativeButton("狠心丑拒",

                    new DialogInterface.OnClickListener() {

                        public void onClick(DialogInterface dialog, int which) {

                        }

                    });

            AlertDialog alertDialog = builder.create();

            alertDialog.show();

        } catch (Exception e) {

            e.printStackTrace();

        }

 

//进行下载

public class DownLoadManager {

public static File getFileFromServer(String path, ProgressDialog pd) throws Exception{

        //濡傛灉鐩哥瓑鐨勮瘽琛ㄧず褰撳墠鐨剆dcard鎸傝浇鍦ㄦ墜鏈轰笂骞朵笖鏄彲鐢ㄧ殑

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

            URL url = new URL(path);

            HttpURLConnection conn =  (HttpURLConnection) url.openConnection();

            conn.setConnectTimeout(5000);

            //鑾峰彇鍒版枃浠剁殑澶у皬

            pd.setMax(conn.getContentLength());

            InputStream is = conn.getInputStream();

            File file = new File(Environment.getExternalStorageDirectory(), "updata.apk");

            FileOutputStream fos = new FileOutputStream(file);

            BufferedInputStream bis = new BufferedInputStream(is);

            byte[] buffer = new byte[1024];

            int len ;

            int total=0;

            while((len =bis.read(buffer))!=-1){

                fos.write(buffer, 0, len);

                total+= len;

                //鑾峰彇褰撳墠涓嬭浇閲�

                pd.setProgress(total);

            }

            fos.close();

            bis.close();

            is.close();

            return file;

        }

        else{

            return null;

        }

    }

}

 

//下载进度框

 final ProgressDialog pd; // 进度条对话框

        pd = new ProgressDialog(HomeActivity.this);

        pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

        pd.setMessage("正在下载更新");

        pd.show();

        // 进行下载操作

        new Thread() {

            @Override

            public void run() {

                try {

                    // 下载

                    File file = DownLoadManager.getFileFromServer(

                            list_v.getUrl(), pd);

                    sleep(3000);

                    // 安装

                    installApk(file);

                    pd.dismiss(); // 结束掉进度条对话框

                } catch (Exception e) {

                }

            }

        }.start();

 

//跳转安装

 Intent intent = new Intent();

        // 执行动作

        intent.setAction(Intent.ACTION_VIEW);

        // 执行的数据类型

        intent.setDataAndType(Uri.fromFile(file),

                "application/vnd.android.package-archive");

        HomeActivity.this.startActivity(intent);