= Notes from THP's !EuroPython 2012 Talk]
[[PageOutline]]

[wiki:android back to the main Android porting page]

These notes were compiled based on the [https://ep2012.europython.eu/conference/talks/developing-android-apps-completely-in-python Youtube video] of [http://www.thp.io THP's ] talk from !EuroPython 2012 called [https://ep2012.europython.eu/conference/talks/developing-android-apps-completely-in-python Developing Android Apps completely in Python].

My notes are prefixed with ''MartinK:'' and written in ''italic''.

== !PySide @ Android ==

=== Intro ===
Based on 3 projects:
* Python4Android - takes care of the Python interpreter
* Necessitas - provides Qt libraries for Android
* !PySide - provides Python bindings for Qt

It should be possible to also use !PyQt in place of !PySide but THP was used to !PySide so he used that.

''MartiK: As !PySide currently (January 2013) doesn't support Qt 5 at all but !PyQt does, using !PyQt might be needed for using Qt 5 on Android devices.''

First build Python4Android for you host system - it is used for compiling PySide (you have to cross-compile PySide for Android).

Then there is a small C++ project called [https://github.com/thp/pyside-launcher-android PySide Launcher] - it invokes the Python interpreter from a C++ application. Using it you can use the Necessitas IDE and deploy directly to the device.

The PySide launcher initializes the interpreter, passes it the command-line arguments and runs the main.py file from a folder on the Android ''sdcard'' folder.

The result looks from outside like a C++ application, but what it really does is that it calls the Python interpreter, the Python interpreter then calls PySide and PySide calls the Qt APIs so you can have a Qt application. 

=== Necessitas SDK ===
The Necessitas SDK can be downloaded from here and takes up about 3.5 GB. It contains Android NDK, Android SDK, Qt Creator, Qt compiled for desktop, Qt compiled for Android - basically all in one package.