Can't we make folder programatically in external storage of Android 'R' i.e. android 11 using flutter (OS Error: Operation not permitted, errno = 1)

Question

I'm downloading 1 image from URL

   await dio.download(url, saveFile.path,
            onReceiveProgress: (value1, value2) {
          setState(() {
            progress = value1 / value2;
            print(progress);
          });
        });

This Works fine in Android 10 but not working in Android 11 Why ?

This is my exception:- FileSystemException: Creation failed, path = '/storage/emulated/0/4k unique wallpapers' (OS Error: Operation not permitted, errno = 1)

Though I had called this code in Manifest...

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

<application
    android:preserveLegacyExternalStorage="true"
    android:requestLegacyExternalStorage="true"
</application>

You did not tell what you want to do and there is no code that does anything. Please write a normall post. — blackapps, Jun 26 '21 at 09:34
Your code does not show which folder it tries to create. Or where. Please write a normal post. — blackapps, Jun 26 '21 at 11:15

score 0 · Answer 1 · answered Jul 09 '21 at 10:52

I came here via the GitHub Issue on the Permission Handler plugin. It worked on Android 10, but not on Android 11 you said. Have you tried using the manageExternalStorage permission of the plugin you're using? In the manifest you should add this:

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

And of course you need to request() the permission.

Please read the documentation of the manage external storage, because Google needs to approve the usage of the manageExternalStorage. Let me know if this fixed your problem!

That issue was raised by me. I had added all permissions. – Vaibhav Pallod Jul 10 '21 at 01:03 — Vaibhav Pallod, Jul 10 '21 at 01:03

Can't we make folder programatically in external storage of Android 'R' i.e. android 11 using flutter (OS Error: Operation not permitted, errno = 1)

1 Answers1