Android10 分区存储

Environment.getExternalStorageDirectory()

专用目录 context.getExternalFilesDir()

/sdcard/Android/data/packagename/
/data/data/packagename/

以上目录本App无需申请访问权限即可申请

共享存储空间里的文件需要通过Uri构造输入输出流访问，Uri获取方式有两种：

使用MediaStore或存储访问框(SAF)

content://media/external/file/985

more

https://zoyi14.smartapps.cn/pages/note/index?slug=37feb5116191&origin=share&_swebfr=1&_swebFromHost=mibrowser

https://zoyi14.smartapps.cn/pages/note/index?slug=3c0b39b76ef1&origin=share&_swebfr=1&_swebFromHost=mibrowser

https://www.jianshu.com/p/d71afdf9c90a

Que get 外置sd卡

存储卡/Failed to find configured root that contains

File[] fileList = context.getExternalFilesDirs(null);
/storage/E251-E537/Android/data/com.zuoyebang.iotunion/files/cache/camera_image.jpg

7.0-9.0 FileProvider

https://blog.csdn.net/weixin_44008788/article/details/123376570

https://blog.csdn.net/weixin_42168423/article/details/108918660?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1-108918660-blog-122997598.pc_relevant_multi_platform_whitelistv3&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1-108918660-blog-122997598.pc_relevant_multi_platform_whitelistv3&utm_relevant_index=2

https://www.jianshu.com/p/121bbb07cb07