Selection limit to file picker

[AkshayAshokCode]

Hey!

Is it possible to add a limit to file picker selection?

[anggrayudi]

Currently, there's no Intent.EXTRA_* in Android framework to set maximum selected files. But you have 2 alternatives:

First alternative: Request again after the files are selected.

storageHelper.onFileSelected = { requestCode, files ->
    if (files.size > 4) {
        Toast.makeText(this, "Please select max 4 files", Toast.LENGTH_SHORT).show()
        storageHelper.openFilePicker(REQUEST_CODE_PICK_FILE, true)
    } else {
        // do stuff
    }
}

Second alternative: Take only as many as elements you need.

storageHelper.onFileSelected = { requestCode, files ->
    val selected = files.take(4)
}

I'll update this answer once Google added this capability via Intent.EXTRA_*

[AkshayAshokCode]

Yeah right, but it also compromises user experience.

What if I show a screen with the list of user selected items and tell user that only max 4 items can be selected and ask him to unselect files from this list.
And after he unselected the extra files, I'll let the user proceed.

I want to know your views on it @anggrayudi

[anggrayudi]

Your idea has a better user experience. You can create a dialog with checkboxes, list all selected file names retrieved from storageHelper.onFileSelected callback, and tell the user that he should select only 4 items. Button OK from the dialog must be disabled if the selected files still exceed than 4 items.

[AkshayAshokCode]

Thanks @anggrayudi for the early response and also for this amazing repository! 👌🏻