Android Dialog如何自定义设置宽度和高度

Builder mBuilder = new Builder(ctx);Dialog mAlert = mBuilder.create();mAlert.show();Window window = mAlert.getWindow();WindowManager.LayoutParams P = window.getAttributes();P.width = 自定义宽度（px）;P.height = 自定义高度（px）;window.setAttributes(P);window.setBackgroundDrawableResource(android.R.color.transparent);// 去掉dialog的默认背景mAlert.setContentView(contentView);