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Quick Start

Because of lacking the knowledge of android, I made very slow progress on running filechooser on android.

But thanks the post in GitHub issue, I finally made it. (original codes from Sirfanas)

And this is the codes below which could substitude the photos on the background by choosing the photo in your phone.

main.pyfrom plyer import filechooser
from kivy.properties import ListProperty
from kivy.uix.button import Button
class Main(Widget):

  selection = ListProperty([])
  def choose(self):
      '''
      Call plyer filechooser API to run a filechooser Activity.
      '''
      filechooser.open_file(on_selection=self.handle_selection)
  def handle_selection(self, selection):
      '''
      Callback function for handling the selection response from Activity.
      '''
      self.selection = selection
      #print(str(selection))
  def on_selection(self, *a, **k):
      '''
      Update TextInput.text after FileChoose.selection is changed
      via FileChoose.handle_selection.
      '''
      self.b_t.ii = self.selection[0]
      self.box.ii = self.selection[0]

class RunApp(App):
def build(self):
game = Main()
return game
if name == ‘main‘:
RunApp().run()

</details>
<details>
<summary><span style="font-size:20px"> <code>run.kv</code></span> </summary>
```kv run.kv
<Main@BoxLayout>:
    box: box_img
    b_t: b_t
    orientation: " vertical"
    BoxLayout:
        id: box_img
        ii: '1.png'
        canvas:
            Rectangle:
                source: self.ii
                pos: root.pos
                size: root.size
    BoxLayout:
        width: root.width
        Button:
            size_hint_x:1
            pos: self.pos
            text: 'Switch'
            on_release: root.choose()
        Label:
            size_hint_x:9
            id: b_t
            ii: '123'
            text: self.ii
            haling: 0

`buildozer.spec```` [app]

(str) Title of your application

title = FileChooser

(str) Package name

package.name = filechooser

(str) Package domain (needed for android/ios packaging)

package.domain = org.sirfanas.filechooser

(str) Source code where the main.py live

source.dir = .

(list) Source files to include (let empty to include all the files)

source.include_exts = py,png,jpg,kv,atlas

(list) List of inclusions using pattern matching

source.include_patterns = assets/,images/.png

(list) Source files to exclude (let empty to not exclude anything)

source.exclude_exts = spec

(list) List of directory to exclude (let empty to not exclude anything)

source.exclude_dirs = tests, bin

(list) List of exclusions using pattern matching

source.exclude_patterns = license,images//.jpg

(str) Application versioning (method 1)

version = 0.5

(str) Application versioning (method 2)

version.regex = version = ‘“[‘“]

version.filename = %(source.dir)s/main.py

(list) Application requirements

comma separated e.g. requirements = sqlite3,kivy

requirements = plyer, android, kivy, kivymd, python3==3.7.5, Pillow

(str) Custom source folders for requirements

Sets custom source for any requirements with recipes

requirements.source.kivy = ../../kivy

(list) Garden requirements

garden_requirements =

(str) Presplash of the application

presplash.filename = %(source.dir)s/data/presplash.png

(str) Icon of the application

icon.filename = %(source.dir)s/data/icon.png

(str) Supported orientation (one of landscape, sensorLandscape, portrait or all)

orientation = all

(list) List of service to declare

services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY

#

OSX Specific

#

#

author = © Copyright Info

change the major version of python used by the app

osx.python_version = 3

Kivy version to use

osx.kivy_version = 1.9.1

#

Android specific

#

(bool) Indicate if the application should be fullscreen or not

fullscreen = 0

(string) Presplash background color (for new android toolchain)

Supported formats are: #RRGGBB #AARRGGBB or one of the following names:

red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,

darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,

olive, purple, silver, teal.

android.presplash_color = #FFFFFF

(list) Permissions

android.permissions = INTERNET,WRITE_EXTERNAL_STORAGE,READ_EXTERNAL_STORAGE

(int) Target Android API, should be as high as possible.

android.api = 27

(int) Minimum API your APK will support.

android.minapi = 21

(str) Android NDK version to use

android.ndk = 19b

(int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.

android.ndk_api = 21

(bool) Use —private data storage (True) or —dir public storage (False)

android.private_storage = True

(str) Android NDK directory (if empty, it will be automatically downloaded.)

android.ndk_path =

(str) Android SDK directory (if empty, it will be automatically downloaded.)

android.sdk_path =

(str) ANT directory (if empty, it will be automatically downloaded.)

android.ant_path =

(bool) If True, then skip trying to update the Android sdk

This can be useful to avoid excess Internet downloads or save time

when an update is due and you just want to test/build your package

android.skip_update = False

(bool) If True, then automatically accept SDK license

agreements. This is intended for automation only. If set to False,

the default, you will be shown the license when first running

buildozer.

android.accept_sdk_license = True

(str) Android entry point, default is ok for Kivy-based app

android.entrypoint = org.renpy.android.PythonActivity

(list) Pattern to whitelist for the whole project

android.whitelist =

(str) Path to a custom whitelist file

android.whitelist_src =

(str) Path to a custom blacklist file

android.blacklist_src =

(list) List of Java .jar files to add to the libs so that pyjnius can access

their classes. Don’t add jars that you do not need, since extra jars can slow

down the build process. Allows wildcards matching, for example:

OUYA-ODK/libs/*.jar

android.add_jars = foo.jar,bar.jar,path/to/more/*.jar

(list) List of Java files to add to the android project (can be java or a

directory containing the files)

android.add_src =

(list) Android AAR archives to add (currently works only with sdl2_gradle

bootstrap)

android.add_aars =

(list) Gradle dependencies to add (currently works only with sdl2_gradle

bootstrap)

android.gradle_dependencies =

(list) Java classes to add as activities to the manifest.

android.add_activites = com.example.ExampleActivity

(str) python-for-android branch to use, defaults to master

p4a.branch = master

(str) OUYA Console category. Should be one of GAME or APP

If you leave this blank, OUYA support will not be enabled

android.ouya.category = GAME

(str) Filename of OUYA Console icon. It must be a 732x412 png image.

android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png

(str) XML file to include as an intent filters in tag

android.manifest.intent_filters =

(str) launchMode to set for the main activity

android.manifest.launch_mode = standard

(list) Android additional libraries to copy into libs/armeabi

android.add_libs_armeabi = libs/android/*.so

android.add_libs_armeabi_v7a = libs/android-v7/*.so

android.add_libs_x86 = libs/android-x86/*.so

android.add_libs_mips = libs/android-mips/*.so

(bool) Indicate whether the screen should stay on

Don’t forget to add the WAKE_LOCK permission if you set this to True

android.wakelock = False

(list) Android application meta-data to set (key=value format)

android.meta_data =

(list) Android library project to add (will be added in the

project.properties automatically.)

android.library_references =

(list) Android shared libraries which will be added to AndroidManifest.xml using tag

android.uses_library =

(str) Android logcat filters to use

android.logcat_filters = *:S python:D

(bool) Copy library instead of making a libpymodules.so

android.copy_libs = 1

(str) The Android arch to build for, choices: armeabi-v7a, arm64-v8a, x86, x86_64

android.arch = armeabi-v7a

#

Python for android (p4a) specific

#

(str) python-for-android git clone directory (if empty, it will be automatically cloned from github)

p4a.source_dir =

(str) The directory in which python-for-android should look for your own build recipes (if any)

p4a.local_recipes =

(str) Filename to the hook for p4a

p4a.hook =

(str) Bootstrap to use for android builds

p4a.bootstrap = sdl2

(int) port number to specify an explicit —port= p4a argument (eg for bootstrap flask)

p4a.port =

#

iOS specific

#

(str) Path to a custom kivy-ios folder

ios.kivy_ios_dir = ../kivy-ios

Alternately, specify the URL and branch of a git checkout:

ios.kivy_ios_url = https://github.com/kivy/kivy-ios ios.kivy_ios_branch = master

Another platform dependency: ios-deploy

Uncomment to use a custom checkout

ios.ios_deploy_dir = ../ios_deploy

Or specify URL and branch

ios.ios_deploy_url = https://github.com/phonegap/ios-deploy ios.ios_deploy_branch = 1.7.0

(str) Name of the certificate to use for signing the debug version

Get a list of available identities: buildozer ios list_identities

ios.codesign.debug = “iPhone Developer: ()”

(str) Name of the certificate to use for signing the release version

ios.codesign.release = %(ios.codesign.debug)s

[buildozer]

(int) Log level (0 = error only, 1 = info, 2 = debug (with command output))

log_level = 2

(int) Display warning if buildozer is run as root (0 = False, 1 = True)

warn_on_root = 1

(str) Path to build artifact storage, absolute or relative to spec file

build_dir = ../.buildozer

(str) Path to build output (i.e. .apk, .ipa) storage

bin_dir = ./bin

——————————————————————————————————————-

List as sections

#

You can define all the “list” as [section:key].

Each line will be considered as a option to the list.

Let’s take [app] / source.exclude_patterns.

Instead of doing:

#

[app]

source.exclude_patterns = license,data/audio/.wav,data/images/original/

#

This can be translated into:

#

[app:source.exclude_patterns]

license

data/audio/*.wav

data/images/original/*

#

——————————————————————————————————————-

Profiles

#

You can extend section / key with a profile

For example, you want to deploy a demo version of your application without

HD content. You could first change the title to add “(demo)” in the name

and extend the excluded directories to remove the HD content.

#

[app@demo]

title = My Application (demo)

#

[app:source.exclude_patterns@demo]

images/hd/*

#

Then, invoke the command line with the “demo” profile:

#

buildozer —profile demo android debug

![](https://s3.ax1x.com/2021/01/02/sSdtHg.gif#alt=Kivy%20file%20chooser)
<a name="8c136bd0"></a>
## Choose files or directorys
Whit this script, it can print the absolute path of the file/directory you piked at the button.
`filechooser.open_file` works fine. But `filechooser.choose_dir` works only in my PC, not on Android. No idea why.
`main.py`from kivy.clock import Clock<br />
from random import randint<br />
from kivy.lang import Builder<br />
from kivy.uix.image import AsyncImage<br />from plyer import filechooser<br />
from kivy.properties import ListProperty<br />
from kivy.uix.button import Button<br />class Main(Widget):<br />
selection = ListProperty([])

def choose(self): ‘’’ Call plyer filechooser API to run a filechooser Activity. ‘’’ filechooser.open_file(on_selection=self.handle_selection)

def choose_d(self): ‘’’ Call plyer filechooser API to run a filechooser Activity. ‘’’ filechooser.choose_dir(on_selection=self.handle_selection)

def handle_selection(self, selection): ‘’’ Callback function for handling the selection response from Activity. ‘’’ self.selection = selection

  #print(str(selection))

def on_selection(self, a, *k): ‘’’ Update TextInput.text after FileChoose.selection is changed via FileChoose.handle_selection. ‘’’ self.b_t.ii = self.selection[0]

class RunApp(App):<br />
def build(self):<br />
game = Main()<br />
return game<br />if **name** == '**main**':<br />
RunApp().run()

![](https://s3.ax1x.com/2021/03/12/6aAbHx.png#alt=Kivy%20file%20chooser)
<a name="ef9bc1e8"></a>
## For android
This example makes you are able to choose a filer/directory in Android phone.
```python
from kivy.core.window import Window
from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.filemanager import MDFileManager
from kivymd.toast import toast
from kivy.utils import platform
KV = '''
BoxLayout:
    orientation: 'vertical'
    MDToolbar:
        title: "MDFileManager"
        left_action_items: [['menu', lambda x: None]]
        elevation: 10
    FloatLayout:
        MDRoundFlatIconButton:
            text: "Open manager"
            icon: "folder"
            pos_hint: {'center_x': .5, 'center_y': .6}
            on_release: app.file_manager_open()
'''
class Example(MDApp):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        Window.bind(on_keyboard=self.events)
        self.manager_open = False
        self.file_manager = MDFileManager(
            exit_manager=self.exit_manager,
            select_path=self.select_path,
            #preview=True
        )
    def build(self):
        return Builder.load_string(KV)
    def file_manager_open(self):
        PATH ="."
        if platform == "android":
          from android.permissions import request_permissions, Permission
          request_permissions([Permission.READ_EXTERNAL_STORAGE, Permission.WRITE_EXTERNAL_STORAGE])
          app_folder = os.path.dirname(os.path.abspath(__file__))
          PATH = "/storage/emulated/0" #app_folder
        self.file_manager.show(PATH)  # output manager to the screen
        self.manager_open = True
    def select_path(self, path):
        '''It will be called when you click on the file name
        or the catalog selection button.
        :type path: str;
        :param path: path to the selected directory or file;
        '''
        self.exit_manager()
        toast(path)
    def exit_manager(self, *args):
        '''Called when the user reaches the root of the directory tree.'''
        self.manager_open = False
        self.file_manager.close()
    def events(self, instance, keyboard, keycode, text, modifiers):
        '''Called when buttons are pressed on the mobile device.'''
        if keyboard in (1001, 27):
            if self.manager_open:
                self.file_manager.back()
        return True
Example().run()

requirements = kivy, python3==3.7.5, docutils, android

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.factory import Factory
from kivy.properties import ObjectProperty
from kivy.uix.popup import Popup
from kivy.utils import platform
import os
class LoadDialog(FloatLayout):
    load = ObjectProperty(None)
    cancel = ObjectProperty(None)
class SaveDialog(FloatLayout):
    save = ObjectProperty(None)
    text_input = ObjectProperty(None)
    cancel = ObjectProperty(None)
class Root(FloatLayout):
    loadfile = ObjectProperty(None)
    savefile = ObjectProperty(None)
    text_input = ObjectProperty(None)
    def dismiss_popup(self):
        self._popup.dismiss()
    def show_load(self):
        content = LoadDialog(load=self.load, cancel=self.dismiss_popup)
        PATH = "."
        if platform == "android":
          from android.permissions import request_permissions, Permission
          request_permissions([Permission.READ_EXTERNAL_STORAGE, Permission.WRITE_EXTERNAL_STORAGE])
          app_folder = os.path.dirname(os.path.abspath(__file__))
          PATH = "/storage/emulated/0" #app_folder
        content.ids.filechooser.path = PATH
        self._popup = Popup(title="Load file", content=content,
                            size_hint=(0.9, 0.9))
        self._popup.open()
    def show_save(self):
        content = SaveDialog(save=self.save, cancel=self.dismiss_popup)
        PATH = "."
        if platform == "android":
          from android.permissions import request_permissions, Permission
          request_permissions([Permission.READ_EXTERNAL_STORAGE, Permission.WRITE_EXTERNAL_STORAGE])
          app_folder = os.path.dirname(os.path.abspath(__file__))
          PATH = "/storage/emulated/0" #app_folder
        content.ids.filechooser.path = PATH
        self._popup = Popup(title="Save file", content=content,
                            size_hint=(0.9, 0.9))
        self._popup.open()
    def load(self, path, filename):
        with open(os.path.join(path, filename[0])) as stream:
            self.text_input.text = stream.read()
        self.dismiss_popup()
    def save(self, path, filename):
        with open(os.path.join(path, filename), 'w') as stream:
            stream.write(self.text_input.text)
        self.dismiss_popup()
class Editor(App):
    pass
Factory.register('Root', cls=Root)
Factory.register('LoadDialog', cls=LoadDialog)
Factory.register('SaveDialog', cls=SaveDialog)
if __name__ == '__main__':
    Editor().run()

#:kivy 1.1.0
Root:
    text_input: text_input
    BoxLayout:
        orientation: 'vertical'
        BoxLayout:
            size_hint_y: None
            height: 30
            Button:
                text: 'Load'
                on_release: root.show_load()
            Button:
                text: 'Save'
                on_release: root.show_save()
        BoxLayout:
            TextInput:
                id: text_input
                text: ''
            RstDocument:
                text: text_input.text
                show_errors: True
<LoadDialog>:
    BoxLayout:
        size: root.size
        pos: root.pos
        orientation: "vertical"
        FileChooserListView:
            id: filechooser
            path: "."
        BoxLayout:
            size_hint_y: None
            height: 30
            Button:
                id: test
                text: "Cancel"
                on_release: root.cancel()
            Button:
                text: "Load"
                on_release: root.load(filechooser.path, filechooser.selection)
<SaveDialog>:
    text_input: text_input
    BoxLayout:
        size: root.size
        pos: root.pos
        orientation: "vertical"
        FileChooserListView:
            id: filechooser
            on_selection: text_input.text = self.selection and self.selection[0] or ''
        TextInput:
            id: text_input
            size_hint_y: None
            height: 30
            multiline: False
        BoxLayout:
            size_hint_y: None
            height: 30
            Button:
                text: "Cancel"
                on_release: root.cancel()
            Button:
                text: "Save"
                on_release: root.save(filechooser.path, text_input.text)