Android Question I need a simple, GPlay aproved, Folder Chooser

[Cableguy]

Hi guys,

I've been searching, and reading, and searching, and reading and searching...
and I find myself lost...

My app will need to save image files to a user selected folder, being it internal "external storage" or SD external Storage.
Typically the selected folder will ultimately be a mix of existing folders and a new final folder, defined by the user, So I will need not only to access/List/read but also to Write and create folders and subfolders.

Is there a lib, a CustomView, anything I can use without having to learn how the filesystem works and all its permissions?

 

[Erel]

If you want to let the user save a single file then use the "SaveAs" method. It is simpler than you think. If you want to have full access to a folder then you need to use ExternalStorage which is more complicated to work with.
If it is not a Google Play app then you can set the targetSdkVersion to 29 with a special flag and have full access.

 

[Cableguy]

If you want to let the user save a single file then use the "SaveAs" method. It is simpler than you think. If you want to have full access to a folder then you need to use ExternalStorage which is more complicated to work with.

I will need to Write files to/ List Files within/ Read files from /Create&Delete Folders in (full access?)

If it is not a Google Play app then you can set the targetSdkVersion to 29 with a special flag and have full access.

It will start as a NOT GPlay app, but it might become one along the way..

 

[Erel]

I will need to Write files to/ List Files within/ Read files from /Create&Delete Folders in (full access?)

Yes, this can only be done with ExternalStorage.

I don't know whether it is relevant or not but another option is to store everything in the app internal folders and let the user save a zip file (or load it) use SaveAs / ContentChooser. This will be simpler.

 

[Cableguy]

Sad

I don't know whether it is relevant or not but another option is to store everything in the app internal folders and let the user save a zip file (or load it) use SaveAs / ContentChooser. This will be simpler.

Sadly I cannot.
But that brings another question...
How "large" is the app internal folder?
Can it store a few (many) hundred photos?
Like, can I store up to, let's say, 10GB? (As long as the device total storage allows it?)
Can I reserve such space?

 

[Hamied Abou Hulaikah]

FileProvider solves 50% of your needs, with some other on the counter free utilities files apps, the remaining 50% will be solved.

 

[Erel]

There is no size limit to the internal folder.

 

[DonManfred]

Like, can I store up to, let's say, 10GB? (As long as the device total storage allows it?)

as the device total storage allows it, yes

Can I reserve such space?

no

 

[abonvici]

I will need to Write files to/ List Files within/ Read files from /Create&Delete Folders in (full access?)

It will start as a NOT GPlay app, but it might become one along the way..

Please, what do you mean for GPlay app, and in which way being a gplay app affect your app? Thanks a lot

 

[Hamied Abou Hulaikah]

Please, what do you mean for GPlay app, and in which way being a gplay app affect your app? Thanks a lot

Google play doesn't accept app below 33 sdk, Features pointed by Erel is under 33 version, So google play will not accept app upload.

 

[Erel]

Specifically I've talked about requestLegacyExternalStorage that works with targetSdkVersion <= 29

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

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