title: Android:How can I set the AlertDialog width and height,and the button of the AlertDialog style?
body: <p>I have a task to change the AlertDialog width and height by xml,I want make that become style,so I can use it easy.And that ,I need to change button of AlertDialog style also.Can you tell me a way to achieve the target。Thank you Very grateful。
  PS，I'd better achieve the target by change xml。</p>