continuing with Android quick heads-up
I'm going to show you how one can
develop an Android mobile app or well it
in minutes
okay so claimants should have been
presenting but she got all our IDE
stolen and she couldn't board the plane
so I'm filling in I'm so we burn we both
work for a bank
the second bank in France which is not a
classical bank it's organized like a
credit union where each customer has a
share and voting rights to a regional
bank and the regional banks a owned the
central the central body we've done that
as a side project of our main project
which is called cash whose aim is to
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enable every of our banking customer to
go on the blockchain we are focused on
mostly on identity and key recovery once
we've made those two areas we will focus
on writing here iam banking application
okay so this is really a side project
how did it happen
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first we we wanted to build to build
prototypes mock-ups for the UI and uux
experiment to get
our IDs right before committing to to a
full cutting so and our product owner
was here with specialist of blood
language so he wrote an open book open
source book on opens blocks CAD which is
a computer-aided design system using
block programming and so he made us
aware of block language design for
Android so we went that way and then
looking closer I realized that this
thing was extensible and so why not
write an ECM extension so that's how it
happened so let's start with a demo of
how it's working
so App Inventor is a web IDE that is you
you don't have to install anything on
your machine you just log in on the MIT
server and you've got two screens first
screen is the interface composer very
much like very much like what you get in
the Android studio and you can switch to
the programming so you program with
blogs so you don't have any curly
brackets or semicolon error kind of
stuff everything clicks into place and
this is how you do your programming this
is this makes another screen appear with
the name history so this is App Inventor
who who knew App Inventor
okay so okay
the other ones are real programmers okay
so you click build and then it downloads
on your mobile device
you're then application is starting and
you see the usual ECM stuff addresses
transactions stuff like that
so if you want to do that just create a
login at this address train yourself
without a serum serum is not a standard
component and after a while you'll get
your apps in within 10 minutes you get a
small app very fast it can compile and
download on a companion application or
you can compile to a real apk that is a
real a real Android application
now we've we've made a new serum
extension you load it explicitly from
your computer from your filesystem you
do import extension once extension is
imported it appears here as a non
visible component and it also appear
here in the list of widgets most of the
widgets as you see there are interface
with it and this one is when providing
the ECM functionality now when you
switch to the programming mode you see
that a CRM extension appears here and
this is some of the method we have
implemented so you can see both basic
one get blocked number get balance the
gate key pair create secret key and
public key you can do your hash function
get transaction status and then the
sending
is Earl to another device okay
the we work with web suite a web suite J
is a Java library they do the heavy
lifting
most of our functions they are 10 to 20
line and they just wrap the web suite a
functions ok this is how you can get
started
unfortunately the MIT web server is as
capacity problem because it relies on
the Google App Engine and the Google App
Engine itself as a limitation of 10
megabytes of data going out that is if
your APK file your application is
greater than 10 megabyte
it's not going to work so I had to
modify the code of the App Inventor
and remove some of the limitation make
it work with App Engine library from
Google and you have to make it work on
your own server on on your local machine
this is a 1.4 gigabyte download because
it includes all the source code all the
intermediate files from the compilation
and so forth no time to fix it and make
it lighter and it just requires Java 8
JVM we've tested it on Windows Linux and
Apple
if you run it on your local machine then
the idea will appear on localhost 8 8
then you'll need the serum component the
ECM component is here and you'll be able
to import it into your project and have
the etherium functionality the source
code is not yet here but will be what
this place is not much and this is why
we suppose that this will be useful
as far as most of the project you'll
you're not focused on developing this as
far as it will be I suppose for you a
side project but let's cooperate on the
side project and let's make it grow in
functionality let's keep in touch
try it on your own and let's make it
rethink we have time for questions yes
one mint Soviet
no questions one
no you it's not possible to Android
studio that it doesn't compile to Java
there is a complex system inside
I believe it compiles to scheme which is
a list flag language and there is a
scheme interpreter in the thing
something like that I'm not a specialist
of this but still you get a real apk and
with the latest version of the MIT you
can upload it to the tourist or question
I don't think they changed well it
that's depend that depends on Google
because there is a limitation they have
this 10 Meg limitation on whatever goes
out of the Google server so until they
remove that there is no chance and this
is because the web sweetie library and
it's dependencies they are quite big the
extension object is 10 Meg itself well
we are running it on Google compute
Google compute server compute engine
we're renting servers it's it's more
expensive you you know the I think
father they made for MIT they run it on
App Engine and because it's less
expensive than running the full Java
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okay yeah yeah we can
okay okay so thank you thank you
we'd have the Fondation address that's
it thank you