Investigate the tools and integration of them with Hardware.

[ElHacker]

https://kivy.org/docs/guide/packaging-android.html

[ElHacker]

http://www.leouieda.com/blog/scipy-on-android.html

[ElHacker]

https://github.com/kivy/python-for-android

[ElHacker]

3D with Kivy https://www.youtube.com/playlist?list=PLP19bggXJC494N7o6DUDJJQ1djJi-k3V-

[ElHacker]

Based on: http://python-for-android.readthedocs.io/en/latest/quickstart/ First create a main.py file in the directory where you're keeping your app

Example main.py file:

import kivy
kivy.require('1.0.9')
from kivy.lang import Builder
from kivy.uix.gridlayout import GridLayout
from kivy.properties import NumericProperty
from kivy.app import App

Builder.load_string('''
<HelloWorldScreen>:
    cols: 1
    Label:
        text: 'Welcome to the Hello world'
    Button:
        text: 'Click me! %d' % root.counter
        on_release: root.my_callback()
''')

class HelloWorldScreen(GridLayout):
    counter = NumericProperty(0)
    def my_callback(self):
        print 'The button has been pushed'
        self.counter += 1

class HelloWorldApp(App):
    def build(self):
        return HelloWorldScreen()

if __name__ == '__main__':
    HelloWorldApp().run()

Connect your android device in developer mode and enable USB debugging: https://developer.android.com/studio/debug/dev-options.html

Now run:

p4a apk --private ~/Developer/Android/ptam --package=org.cs231a.ptam --name "PTAM" --version 0.1 --bootstrap=sdl2 --requirements=python2,kivy,numpy --arch=armeabi-v7a

If successful now let's install the apk in our android device:

sudo adb -d install <path_apk>/name.apk

To uninstall the apk, you'll need the package name:

sudo adb uninstall org.cs231a.ptam

To check the logs of your apk running on device:

abd logcat

Numpy is supported!

[ElHacker]

cp build/other_builds/kivy3/armeabi-v7a/kivy3/kivy3/default.glsl dists/unnamed_dist_2/private/lib/python2.7/site-packages/kivy3/

[ElHacker]

If there are any cython compilation errors it might be due to having the wrong cython version you should install cython 0.21

pip install cython==0.21

https://github.com/kivy/python-for-android/issues/541

[ElHacker]

/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/cs231a/ptam$

[ElHacker]

To do the android app deployment

deployapp ~/Developer/Android/PTAM/src/ org.cs231a.ptam /home/elhacker/.local/share/python-for-android/dists/unnamed_dist_1/build/outputs/apk/unnamed_dist_1-debug.apk ~/Developer/Android/PTAM/src/java_src/ ~/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/cs231a/ptam/

Here's the bash script for deploy app:

# aliases for android dev.
deployapp() {
  echo "Compiling java for errors"
  java_src_dir=$4
  find $4 -name "*.java" > $java_src_dir/sources.txt
  javac @${java_src_dir}/sources.txt || kill -INT $$
  echo "Copying the java src files to the apk"
  apk_java_src_dir=$5
  cp $java_src_dir/*.java $apk_java_src_dir
  echo "Building the new apk..."
  p4a apk --private $1
  echo "Uninstalling the old apk from the phone"
  adb uninstall $2
  echo "Installing the new apk on the phone"
  adb -d install $3
}

Put it on your .bashrc file