Font change

I can't change the font for the droplist view or the dialog text font can you please add this feature in your new update? I found it in code as a set typeface and it worked very well, hope you can add it in XML too, many thanks

该 issue 提到了现有的 setTypeface 用法，但没有提供文件路径或测试路径。首先定位该用法以及下拉菜单和对话框的 XML 属性定义；完成标准是两种字体都可以通过 XML 配置。

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