zipFile.ExtractToDirectory() error

Question

I can't unzip a file in the destination path. Every time I get this error message: System.UnauthorizedAccessException: 'Access to the path "/ storage / emulated / 0 / Download / Matrix 08_06.enc' is denied".
In manifest I declared MANAGE_EXTERNAL_STORAGE and gave the file access permission to the app.
Anyone have an idea on how to fix?

Answer 1

Hello,​

If you add MANAGE_EXTERNAL_STORAGE in your AndroidManifest.xml, you need to request this permission as well, Use the ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION intent action to direct users to a system settings page where they can enable the following option for your app: Allow access to manage all files.

please refer to following thread.
https://developer.android.com/training/data-storage/manage-all-files#all-files-access

Please note: If you request MANAGE_EXTERNAL_STORAGE permission. Your application should be following permitted list that uses of the All files access permission. Otherwise, your application will be rejected from Google Play.

• File management
• Backup and restore apps
• Anti-virus apps
• Document management apps
• Search (On Device)
• Disk/Folder Encryption and Locking
• Device Migration/Phone transfer

Best Regards,

Leon Lu

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