path of primary and secondary sdcard with plyer problem

[Degenerate Tech]

#primary sdcrd path is ok .but path of secondary sd card is none 

from kivy.lang import Builder

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

from android import storage

app_storage_path = storage.app_storage_path()

print(f'app_storage_path: {app_storage_path}')

primary_external_storage_path = storage.primary_external_storage_path()

print(f'primary_external_storage_path: {primary_external_storage_path}')

secondary_external_storage_path = storage.secondary_external_storage_path()

print(f'secondary_external_storage_path: {secondary_external_storage_path}')

#persistent_keystore_path = cls.get_persistent_keystore_path()

#print(f'persistent_keystore_path: {persistent_keystore_path}')

#non_persistent_keystore_path = cls.get_non_persistent_keystore_path()

#print(f'non_persistent_keystore_path: {non_persistent_keystore_path}')

Builder.load_string('''

#: import storagepath plyer.storagepath

<StoragePathInterface>:

    BoxLayout:

        orientation: 'vertical'

        BoxLayout:

            Button:

                text: 'Home'

                on_press: label.text = str(storagepath.get_home_dir())

            Button:

                text: 'External Storage'

                on_press:

                    label.text = str(storagepath.get_external_storage_dir())

        BoxLayout:

            Button:

                text: 'Root'

                on_press: label.text = str(storagepath.get_root_dir())

            Button:

                text: 'Documents'

                on_press: label.text = str(storagepath.get_documents_dir())

        BoxLayout:

            Button:

                text: 'Downloads'

                on_press: label.text = str(storagepath.get_downloads_dir())

            Button:

                text: 'Videos'

                on_press: label.text = str(storagepath.get_videos_dir())

        BoxLayout:

            Button:

                text: 'Music'

                on_press: label.text = str(storagepath.get_music_dir())

            Button:

                text: 'Pictures'

                on_press: label.text = str(storagepath.get_pictures_dir())

        Button:

            text: 'Applications'

            on_press: label.text = str(storagepath.get_application_dir())

        Label:

            id: label

''')

class StoragePathInterface(BoxLayout):

    pass

class StoragePathApp(App):

    def build(self):

        return StoragePathInterface()

if __name__ == "__main__":

    

    

    

    StoragePathApp().run()

######adb log

11-01 18:14:28.341  8580  8664 I python  : [INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_gif (img_pil, img_ffpyplayer ignored)
11-01 18:14:29.273  8580  8664 I python  : app_storage_path: /data/user/0/org.test.plyerstoragepath/files
11-01 18:14:29.290  8580  8664 I python  : primary_external_storage_path: /storage/emulated/0
11-01 18:14:29.299  8580  8664 I python  : secondary_external_storage_path: None
11-01 18:14:29.631  8580  8664 I python  : [INFO   ] [Window      ] Provider: sdl2

[Robert Flatt]

Yes, on an Android device secondary external storage may not exist. 

[Degenerate Tech]

i have samsung micro sd card in my phone ......

[Robert Flatt]

https://github.com/kivy/python-for-android/blob/develop/pythonforandroid/recipes/android/src/android/storage.py