public void install(String urlContainsFileName) {

   

   

    String apkName = urlContainsFileName.substring(urlContainsFileName.lastIndexOf('/') + 1);

    String filePath = Environment.getExternalStorageDirectory()

    .toString() + "/lenovo";

    Intent intent = new Intent();

    intent.setAction(Intent.ACTION_VIEW);

    intent.setDataAndType(Uri.parse("file://" + filePath + "/" + apkName), "application/vnd.android.package-archive");

    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    mContext.startActivity(intent);

    

   

  }