Question

I really want to make an AlertDialog with single button, can someone guide me with this. Thanks!

Answer 1

Yes you can:

new AlertDialog.Builder(this)
.setIcon(R.drawable.icon)
.setTitle("Error")
.setMessage("Please fill out the entire form")
.setPositiveButton("Close", new DialogInterface.OnClickListener() {

    @Override
    public void onClick(DialogInterface dialog, int which) {

    }
})
.create()
.show()
;