How to install .apk programmatically in android

  Here the blow code is used to call .apk file from the android programmatically.
  Status.apk is the .apk file name.you can use your .apk file name.
             
                Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(
Uri.fromFile(new File(Environment.getExternalStorageDirectory()
+ "/" + "Status.apk")),
"application/vnd.android.package-archive");
startActivity(intent);