Android : AlertDialog takes time to respond with lenghty message in android

I am using an alertdialog to show some text as message. but the message contains around 2000 lines. so when i click to show the dialog it's taking minimum of 7 - 9 seconds to show the dialog and it's taking 4 - 6 seconds to respond like scrolling or clicking on negative button after the dialog getting opened. please help me on this. below is the code.

note :: 'content' below is the message to show in dialog.

    AlertDialog.Builder builder = new AlertDialog.Builder(this);       
    // Make all links behave as intended
    Linkify.addLinks(content, Linkify.WEB_URLS);

    builder.setTitle(title)
            .setMessage(content) // the content is around 2000 lines
            .setNegativeButton(negativeButtonTitle,
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                            dialog.cancel();
                        }
                    });

    AlertDialog alert = builder.create();
    alert.show();