public class UpdateVersionController {
 private Context context;
 //更新文件的實例
 private AppUpdateInfo info;
 //當前版本號
 private int versionCode;
 //提示用戶更新的dialog
 private Dialog dialog;
 //下載進度條
 private ProgressDialog pd;

 public static UpdateVersionController getInstance(Context context) {
 return new UpdateVersionController(context);
 }
 public UpdateVersionController(Context context) {
 this.context = context;
 }
 public void normalCheckUpdateInfo() {
 //獲取版本號：這里的版本號在項目的build.gradle中是可以看到的，看復制過來的參數(shù)
 /**
 defaultConfig {
 applicationId "com.zhh.test"
 minSdkVersion 16
 targetSdkVersion 23
 versionCode 1
 versionName "1.0"
 }
 */
 versionCode = getVerCode(context);//等于19
 checkVersionTask();
 }
 public void forceCheckUpdateInfo() {//強制更新一般不用
 versionCode = getVerCode(context);//等于19
 info = new AppUpdateInfo();
 info.setUrl("http://60.210.21.89/appdl.hicloud.com/dl/appdl/application/apk/dd/ddeabc7e64d64e4287340ffb89c592a8/com.hellotext.1309171635.apk?sign=baidu@baidu&wshc_tag=0&wsts_tag=58c7bde2&wsid_tag=7c5a47c8&wsiphost=ipdbm");
 info.setVercode(2);//每次更新都靠它
 info.setVername("2.0");//版本名字
 info.setApkname("com.hellotext.1309171635.apk");
 info.setAppname("Hello");
 info.setForceUpp("yes");
 info.setUppcontent("1. Hello啊喲更新了\n2. 英文的,界面很好看.\n3. 界面效果優(yōu)化");//更新內(nèi)容
 updateApp();
 }
 /**
 * 步驟一：獲取版本信息
 */
 private void checkVersionTask() {
 //網(wǎng)絡加載獲取app新版版本信息
 //這里不做請求直接賦值
 info = new AppUpdateInfo();
 info.setUrl("http://60.210.21.89/appdl.hicloud.com/dl/appdl/application/apk/dd/ddeabc7e64d64e4287340ffb89c592a8/"+
　　　　　　　　　　　　"com.hellotext.1309171635.apk?sign=baidu@baidu&wshc_tag=0&wsts_tag=58c7bde2&wsid_tag=7c5a47c8&wsiphost=ipdbm");
 info.setVercode(2);//每次更新都靠它
 info.setVername("2.0");//版本名字
 info.setApkname("com.hellotext.1309171635.apk");
 info.setAppname("Hello");
 info.setForceUpp("no");
 info.setUppcontent("1. Hello啊喲更新了\n2. 英文的,界面很好看.\n3. 界面效果優(yōu)化");//更新內(nèi)容
 updateApp();
 }
 private void updateApp() {
 if (null != info && info.getVercode() > versionCode) {//20>19可更新
 showUpdataDialog();
 } else {
 Toast.makeText(context, "已經(jīng)是最新版本啦~", Toast.LENGTH_SHORT).show();
 }
 }
 private Button cancelBtn;
 /**
 * 步驟二：彈出對話框提示用戶更新
 */
 protected void showUpdataDialog() {
 dialog = new Dialog(context, android.R.style.Theme_Dialog);
 dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
 dialog.setContentView(R.layout.activity_updater);
 dialog.setCanceledOnTouchOutside(false);
 dialog.setCancelable(false);
 ((TextView) dialog.findViewById(R.id.content)).setText(info.getUppcontent());
 cancelBtn = (Button) dialog.findViewById(R.id.cancel);
 cancelBtn.setVisibility("yes".equals(info.getForceUpp()) ? View.GONE : View.VISIBLE);
 // 取消更新
 cancelBtn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 dialog.dismiss();
 }
 });
 // 確認更新
 dialog.findViewById(R.id.ok).setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 dialog.dismiss();
 downLoadApk();
 }
 });
 dialog.findViewById(R.id.market).setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 Intent intent = new Intent(Intent.ACTION_VIEW);
 intent.setData(Uri.parse("market://details?id=Hello"));
 context.startActivity(intent);
 }
 });
 dialog.show();
 }
 /**
 * 步驟三：下載文件
 */
 private void downLoadApk() {
 // 進度條對話框
 pd = new ProgressDialog(context);
 pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
 pd.setMessage("下載中...");
 pd.setCanceledOnTouchOutside(false);
 pd.setCancelable(false);
 // 監(jiān)聽返回鍵--防止下載的時候點擊返回
 pd.setOnKeyListener(new OnKeyListener() {
 @Override
 public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
 if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
 Toast.makeText(context, "正在下載請稍后", Toast.LENGTH_SHORT).show();
 return true;
 } else {
 return false;
 }
 }
 });
 // Sdcard不可用
 if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
 Toast.makeText(context, "SD卡不可用~", Toast.LENGTH_SHORT).show();
 } else {
 pd.show();
 //下載的子線程
 new Thread() {
 @Override
 public void run() {
 try {
 // 在子線程中下載APK文件
 File file = getFileFromServer(info.getUrl(), pd);
 sleep(1000);
 // 安裝APK文件
 installApk(file);
 pd.dismiss(); // 結(jié)束掉進度條對話框
 } catch (Exception e) {
 Toast.makeText(context, "文件下載失敗了~", Toast.LENGTH_SHORT).show();
 pd.dismiss();
 e.printStackTrace();
 }
 }
 }.start();
 }
 }
 /**
 * 從服務器下載apk
 */
 public File getFileFromServer(String path, ProgressDialog pd) throws Exception {
 // 如果相等的話表示當前的sdcard掛載在手機上并且是可用的
 if (Environment.getExternalStorageState().equals(
 Environment.MEDIA_MOUNTED)) {
 URL url = new URL(path);
 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 conn.setConnectTimeout(5000);
 // 獲取到文件的大小
 pd.setMax(conn.getContentLength() / 1024);
 InputStream is = conn.getInputStream();

 File file = new File(Environment.getExternalStorageDirectory().getPath()
 + "/blibao/merchant", "i_blibao_shop.apk");
 //判斷文件夾是否被創(chuàng)建
 if (!file.getParentFile().exists()) {
 file.getParentFile().mkdirs();
 }
 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;
 // 獲取當前下載量
 pd.setProgress(total / 1024);
 }
 fos.close();
 bis.close();
 is.close();
 return file;
 } else {
 return null;
 }
 }
 /**
 * 安裝apk
 */
 protected void installApk(File file) {
 Intent intent = new Intent();
 // 執(zhí)行動作
 intent.setAction(Intent.ACTION_VIEW);
 // 執(zhí)行的數(shù)據(jù)類型
 intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 context.startActivity(intent);
 }
 /**
 * 獲取版本名
 */
 public static String getVerName(Context context) {
 String verName = "";
 try {
 // 獲取packagemanager的實例
 PackageManager packageManager = context.getPackageManager();
 // getPackageName()是你當前類的包名，0代表是獲取版本信息
 PackageInfo packInfo = packageManager.getPackageInfo(
 context.getPackageName(), 0);

 verName = packInfo.versionName;
 } catch (Exception e) {
 e.printStackTrace();
 }
 return verName;
 }
 /**
 * 獲取版本號
 */
 public static int getVerCode(Context context) {
 int verCode = -1;
 try {
 // 獲取packagemanager的實例
 PackageManager packageManager = context.getPackageManager();
 // getPackageName()是你當前類的包名，0代表是獲取版本信息
 PackageInfo packInfo = packageManager.getPackageInfo(
 context.getPackageName(), 0);

 verCode = packInfo.versionCode;
 } catch (Exception e) {
 e.printStackTrace();
 }
 return verCode;
 }
}