How to do save_file_dialog or Share a file on Android?

[vzool]

Here is the snippet code that works and opens a dialog, the file is created but it is zero bytes:

    from android.content import Intent
    from android.net import Uri
    from java.io import File

    file_path = os.path.join(self.paths.data, 'zakat.pickle')
    file = File(str(file_path))
    print('file.length:', file.length())

    intent = Intent(Intent.ACTION_CREATE_DOCUMENT)
    intent.setType("*/*")
    intent.addCategory(Intent.CATEGORY_OPENABLE)
    intent.putExtra(Intent.EXTRA_TITLE, 'zakat.pickle')
    intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));

    self._impl.start_activity(Intent.createChooser(intent, 'Save database'))

Open save Dialog

After clicking Save, file zakat.pickle (1) created but it is zero bytes

Any suggestions?

Thanks

[freakboy3742]

I have no particular experience with the Android File dialog APIs, but my immediate impression is: if the file exists, but there's no content in the file... where is the code that is writing to the file? Based on the snippet you've provided, I can see you've created a Java File object, but you're not invoking anything that would write to that file.

[mhsmith]

I think he's attempting to attach an existing file to the intent, but that's not the correct way to use ACTION_CREATE_DOCUMENT. You're supposed to wait for the intent result, which will contain a URI that you can write to.

See #1158 (comment) for a link to a Java example, and #1158 (comment) for how to wait for an intent result.