如何定制安卓AlertDialog的底层

<style name="CustomAlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
    <!-- 自定义样式属性 -->
</style>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <!-- 自定义对话框的内容 -->

</LinearLayout>

AlertDialog.Builder builder = new AlertDialog.Builder(context, R.style.CustomAlertDialog);
builder.setView(R.layout.custom_alert_dialog);
builder.setTitle("自定义对话框");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // 确定按钮点击事件
    }
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        // 取消按钮点击事件
    }
});
AlertDialog dialog = builder.create();
dialog.show();