自定义dialog设置宽高

 // 动态设置自定义Dialog的显示内容的宽和高
         WindowManager m = getWindowManager();
         Display d = m.getDefaultDisplay();  //为获取屏幕宽、高
         android.view.WindowManager.LayoutParams p = progressDialog.getWindow().getAttributes();  //获取对话框当前的参数值
         p.height = (int) (d.getHeight() * 0.3);   //高度设置为屏幕的0.3
         p.width = d.getWidth();    //宽度设置为全屏
         progressDialog.getWindow().setAttributes(p);     //设置生效