app更新代码

使用okttputil网络请求框架检测更新

public void checkUpdate(Activity activity, final boolean isShowTip) {     OkHttpUtils.get().url(Url.UPDATE_VERSION).build().execute(new StringCallback() {         @Override         public void onError(Call call, Exception e, int id) {           }           @Override         public void onResponse(String response, int id) {             final JsonData jsonData = JsonData.create(response);             int versionCode = jsonData.optInt("version");             int currentVersionCode = SystemUtils.getAppVersionCode(context);             if (versionCode > currentVersionCode) {                 AlertDialog.Builder builder = new AlertDialog.Builder(context);                 builder.setTitle("更新");                 builder.setMessage("检测到有更新,是否立刻更新？");                 builder.setNegativeButton("稍后更新", new DialogInterface.OnClickListener() {                       @Override                     public void onClick(DialogInterface dialog, int which) {                     }                 });                 builder.setPositiveButton("立刻更新", new DialogInterface.OnClickListener() {                       @Override                     public void onClick(DialogInterface dialog, int which) {                         if (!StringUtils.isWifi(context)) {                             AlertDialog.Builder builder = new AlertDialog.Builder(context);                             builder.setTitle("提示");                             builder.setMessage("您当前正在使用移动网络，继续下载将消耗流量");                             builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {                                   @Override                                 public void onClick(DialogInterface dialog, int which) {                                   }                             });                             builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {                                   @Override                                 public void onClick(DialogInterface dialog, int which) {                                     downLoadApk(jsonData.optString("download"));                                 }                             });                             builder.create().show();                         } else {                             downLoadApk(jsonData.optString("download"));                         }                     }                 });                 builder.create().show();             } else {                 if (isShowTip) {                     ToastUtils.show(context, "当前已是最新版本");                 }             }         }       }); }   /*    * 从服务器中下载APK */   protected void downLoadApk(final String url) {       final ProgressDialog pd;    //进度条对话框       pd = new ProgressDialog(this);       pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);       pd.setMessage("正在下载更新");       pd.show();       new Thread() {           @Override           public void run() {               try {                   File file = DownLoadManager.getFileFromServer(url, pd);                   sleep(3000);                   installApk(file);                   pd.dismiss(); //结束掉进度条对话框               } catch (Exception e) {                   Toast.makeText(context, "下载失败!",                           Toast.LENGTH_SHORT).show();                   e.printStackTrace();               }           }       }.start();   }     //安装apk   protected void installApk(File file) {       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");       startActivity(intent);   }

这里是下载数据的代码DownLoadManager.java

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import java.io.BufferedInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL;   import android.app.ProgressDialog; import android.os.Environment;   public class DownLoadManager {       public static File getFileFromServer(String path, ProgressDialog pd) throws Exception {         //如果相等的话表示当前的sdcard挂载在手机上并且是可用的         if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {             URL url = new URL(path);             HttpURLConnection conn = (HttpURLConnection) url.openConnection();             conn.setConnectTimeout(5000);             //获取到文件的大小             pd.setMax(conn.getContentLength());             InputStream is = conn.getInputStream();             File file = new File(Environment.getExternalStorageDirectory(), "某某某.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;                 //获取当前下载量                 pd.setProgress(total);             }             fos.close();             bis.close();             is.close();             return file;         } else {             return null;         }     } }

本文参考地址：http://blog.it985.com/19585.html