android - 红米手机java.io.IOException: open failed: EACCES (Permission denied)

Question

为什么只有红米手机会报权限问题，我把权限都添加上了，只有红米手机报错
我调用的是拍照功能

Answer 1

Android version of Redmi phone? If it is 6.0 or above, you need to apply for runtime permissions.

Answer 2

Have you added permissions

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>  

If it is a 6.0 system

   你可以看看大神的介绍：http://blog.csdn.net/lmj623565791/article/details/50709663

Answer 3

These mobile phones have built-in permission management. It may be that the built-in permission management has prohibited relevant permissions