Unable to get proper custom AlertDialog

Question

I have been trying to set a custom AlertDialog but was not able to get correctly.

prompt.xml

Answer 1

    Dialog d=new Dialog(this);
    //Add this
    d.requestWindowFeature(Window.FEATURE_NO_TITLE);

    d.setContentView(R.layout.prompt);
    WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
    lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
    lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
    d.getWindow().setAttributes(lp);
    d.show();