/**

      * 安装apk

      *

      * @param url

      */

     private void installApk() {

         File apkfile = new File(apkFilePath);

         if (!apkfile.exists()) {

             return;

         }

         Intent i = new Intent(Intent.ACTION_VIEW);

         i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

         i.setDataAndType(Uri.parse("file://" + apkfile.toString()),

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

         mContext.startActivity(i);

     }