Android Question how to find app's folder (android 7+) ?

[peacemaker]

Hi, All

There is a task to get files from another app in rooted Android 7. Reading file is tested, it's OK, if the path is known.
But if i have app's package name and the target file name - how to find the file in folders of the app ?
I mean, to find the exact full file path.

 

[teddybear]

Try the path File.DirInternal /data/user/0/packagename/files

 

[peacemaker]

Question is not to try some, but to make an algorithm to find the path correctly, on any rooted device with various drive configurations.

 

[teddybear]

Question is not to try some, but to make an algorithm to find the path correctly, on any rooted device with various drive configurations.

I mean that you can get your app fullpath using File.DirInternal and then replace the packagename substring of the fullpath with the packagename which you want to get file.

 

[Erel]

No other app can access File.DirInternal which makes its actual path irrelevant.

 

[peacemaker]

Hmm, indeed:
1) my app in MEMU emulator File.DirInternal gives his own path as "/data/user/0/MYPACKAGE/files"
2) but a file explorer gives the target app as "/storage/emulated/0/Android/data/TARGETPACKAGE/files"

And no folder of my app like "/storage/emulated/0/Android/data/MYPACKAGE/files"

 

[teddybear]

No other app can access File.DirInternal which makes its actual path irrelevant.

It is the device which has root permission

 

[peacemaker]

And no folder of my app like "/storage/emulated/0/Android/data/MYPACKAGE/files"

This path ("/storage/emulated/0/Android/data/MYPACKAGE/files") is got by

Starter.rp.GetSafeDirDefaultExternal("")

 

[teddybear]

Hmm, indeed:
1) my app in MEMU emulator File.DirInternal gives his own path as "/data/user/0/MYPACKAGE/files"
2) but a file explorer gives the target app as "/storage/emulated/0/Android/data/TARGETPACKAGE/files"

And no folder of my app like "/storage/emulated/0/Android/data/MYPACKAGE/files"

/storage/emulated/0/Android/data/MYPACKAGE/files is File.DIrDefaultExternal, if your phone has TF card

 

[peacemaker]

So, this works:

        Dim p As String = Starter.rp.GetSafeDirDefaultExternal("").Replace(Application.PackageName, TARGETPACKAGE) 
        Dim f As List = File.ListFiles(p)

It means that 2 paths can be checked, internal and external.

 

[teddybear]

This path ("/storage/emulated/0/Android/data/MYPACKAGE/files") is got by

Starter.rp.GetSafeDirDefaultExternal("")

If you are not sure which dir the file is in, you can test if it is existed both of internal and external dir