[TBD]Python app running in android

Creation of HelloWorld Android APK

Preconditon

Create virtualenv and use python3.6 version (Tested on python3.6). Refer below command.

virtualenv -p python3.6 buildozerenv3

Install buildozer

Installation steps (Refer: https://github.com/kivy/buildozer)

git clone https://github.com/kivy/buildozer.git

$ pwd

/Users/deepak/Documents/coding/python/android/buildozer

$python3 setup.py build

$pip3 install -e

$python3 ./setup.py install

$ buildozer --help | more

# Check configuration tokens

Usage:

buildozer [--profile <name>] [--verbose] [target] <command>...

buildozer --version

Available targets:

ios iOS target, based on kivy-ios project

android Android target, based on python-for-android project

osx OSX target, based on kivy-sdk-packager

Global commands (without target):

appclean Clean the .buildozer folder in the app directory.

distclean Clean the whole Buildozer environment.

help Show the Buildozer help.

init Create a initial buildozer.spec in the current directory

serve Serve the bin directory via SimpleHTTPServer

setdefault Set the default command to run when no arguments are given

version Show the Buildozer version

Fetch hello-world app

Buildozer requires main.py as entry point. Below example has this.

Fetch hello world app

$git clone https://github.com/Dirk-Sandberg/KivyHelloWorld.git

$cd KivyHelloWorld/

$ls

main.py

$buildozer init

$ls

buildozer.spec main.py

$ cat buildozer.spec | more

[app]

# (str) Title of your application

title = My Application

# (str) Package name

package.name = myapp

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

package.domain = org.test

# (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

...

$ cat main.py

from kivy.app import App

from kivy.uix.button import Button

class MainApp(App):

def build(self):

return Button(text="Hello World")

MainApp().run()

Enable debugging for android

Enable android Logcat in the Buildozer spec

# (str) Android logcat filters to use

android.logcat_filters = *:S python:D

Install apt packages

APT pkg install

deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ sudo apt update

deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ sudo apt install -y git zip openjdk-8-jdk python3-pip autoconf libtool pkg-config zlib1g-dev libncurses5-dev libncursesw5-dev libtinfo5 cmake libffi-dev

deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ pip3 install --user --upgrade Cython virtualenv

Run Buildozer for api creation

Buildozer for api creation

(buildozerenv3) deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ buildozer android debug deploy run

......

WARNING: Received a --sdk argument, but this argument is deprecated and does nothing.

No compiled python is present to zip, skipping.

No setup.py/pyproject.toml used, copying full private data into .apk.

Applying Java source code patches...

Applying patch: src/patches/SDLActivity.java.patch

# Android packaging done!

# APK helloworld-0.1-armeabi-v7a-debug.apk available in the bin directory

# Run '/home/deepak/.buildozer/android/platform/android-sdk/platform-tools/adb devices'

# Cwd None

* daemon not running; starting now at tcp:5037

* daemon started successfully

List of devices attached

# Application pushed.

# Application started.

(buildozerenv3) deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ ls

bin buildozer.spec main.py

(buildozerenv3) deepak@containerd121:~/deepak/neo4j/android/KivyHelloWorld$ ls -ltrh bin

total 13M

-rw-rw-r-- 1 deepak deepak 13M Apr 19 06:51 helloworld-0.1-armeabi-v7a-debug.apk

Copy the APK file to android device and then install it. Below is the output.

Useful tool

Android SDK command line tool at https://developer.android.com/studio/command-line

JNI tool for running python in Android via Java

https://github.com/joaoventura/pybridge

Reference

https://www.youtube.com/watch?v=EupAeyL8zAo

https://www.youtube.com/watch?v=kRWtSkIYPFI

https://github.com/HeaTTheatR/KivyMD.git

https://wiki.python.org/moin/Android