Android 外置存储卡无法使用FileProvider问题

解决办法：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-files-path
        name="my_images"
        path="." />
</paths>

修改为

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <root-path
        name="my_images"
        path="." />
</paths>