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List:       openjdk-openjfx-dev
Subject:    Re: Android port status
From:       Stephen F Northover <steve.x.northover () oracle ! com>
Date:       2013-12-31 18:04:07
Message-ID: 52C30717.9030000 () oracle ! com
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Hi Johan,

Have you signed the OCA (Oracle Contributor Agreement)?

Ok, let's bootstrap your port and merge it with the existing code after 
we are up and running.  I can see what looks like useful code in the 
"android" directory and we can either copy it over or merge your code in 
at a later time.  Let's continue this discussion in the JIRA.

https://javafx-jira.kenai.com/browse/RT-35123

Steve

On 2013-12-31 3:47 AM, Johan Vos wrote:
> Steve,
> 
> The main issue is currently getting bootstrapped. If we want to build 
> the Dalvik-runtime using open-jfx, we need a location on where to put 
> the dalvik files. This is what I tried to describe in 
> https://javafx-jira.kenai.com/browse/RT-35123
> 
> Please note that we're not really doing an Android port, but a Dalvik 
> port. The (excellent) work done by Oracle in the past allowed for both 
> using Dalvik as well as an Oracle-internal VM. There are no 
> indications that the latter is ever going to fly, so I don't want to 
> have an abstraction on top of {Dalvik, OracleVM} if only the first one 
> exists. I do hope there will be other VM's (Oracle VM and more) later, 
> as that will make it easier to have Java 8 and so on, but right now we 
> have to stick with what we have (dalvik).
> 
> Without these files, we can supply patches for existing files in 
> open-jfx, but by no means we can build the runtime. I do understand it 
> is not trivial to "add" a directory for the sake of a port, but then, 
> a port is not trivial as well. I'm open to all suggestions.
> The longer we wait, however, with synchronizing the bitbucket repo 
> with the open-jfx repo, the harder it gets. Right now, I have no other 
> option than committing all changes in the bitbucket repo, as I need to 
> be able to build a runtime. We had 419 downloads of the runtime in 10 
> days, so clearly there are people interested in this.
> 
> - Johan
> 
> 
> 2013/12/20 Stephen F Northover <steve.x.northover@oracle.com 
> <mailto:steve.x.northover@oracle.com>>
> 
> Hi Johan,
> 
> This is very good news.  We need to work together so that you are
> able to run OpenJFX unmodified.  This may not be practical for all
> sorts of reasons, but we need to seriously explore this and work
> towards this goal.  Please open JIRA for the various problems you
> are seeing and we can try to deal with them there and on this list.
> 
> Thanks,
> Steve
> 
> 
> On 2013-12-20 12:56 PM, Johan Vos wrote:
> 
> Hi,
> 
> As you might know, 2 months ago I started a community effort
> for "porting"
> JavaFX to Android. Today, we released build 3 of the JavaFX
> Android
> runtime, which can be downloaded at
> https://bitbucket.org/javafxports/android/downloads/dalvik-sdk-b3.zip
> with
> instructions on how to build applications at
> https://bitbucket.org/javafxports/android/wiki/Building%20and%20deploying%20JavaFX%20Applications
>  
> Building the runtime itself is explained at
> https://bitbucket.org/javafxports/android/wiki/Building%20the%20JavaFX%20Android%20Runtime
>  
> At this moment, most of the Ensemble suite runs on Android
> (positive
> reports starting with Android 3.x).
> 
> The downloadable runtime is created using the bitbucket project at
> https://bitbucket.org/javafxports/android-graphics-rt which is
> a fork of
> the openjfx-graphics-rt mirror on bitbucket. We merge often,
> so all changes
> made in openjfx-graphics should be in the Android runtime as well.
> 
> There are a number of issues left:
> * touch map issues causing applications to crash if "touched
> too much". I
> created a JIRA ticket for this and will create another one
> (related, but
> not same cause) later.
> * Java 7 only. Currently, applications cannot make use of Java
> 8 features.
> Dalvik has no invokedynamic, so we can't do lambda's.
> * we just started, so there will be plenty of other bugs.
> 
> We are also spending efforts in documentation and community
> interaction.
> The google group javafxandroid has a pretty active
> mailinglist. Build 2 of
> the runtime has been downloaded 291 times in 2 weeks, and
> build 3 has been
> downloaded 60 times since it was released a couple of hours
> ago. So there
> is definitely community interest and involvement.
> Clearly, there is involvement from Oracle as well. Most of the
> effort so
> far has been done by Tomas Brandalik and the Prague team. I
> was positively
> surprised to see the amount of native code that was already
> available for
> Android.
> 
> After a few discussions, it has been agreed that we should try to
> synchronize as much as possible with the OpenJFX repositories,
> without
> jeopardizing the stability and performance of the main ports,
> and without
> running into legal trouble.
> 
> I will run a diff on the current code versus the OpenJFX code,
> and I will
> try to create issues with patches for sending the changes back
> to OpenJFX.
> Not all changes can go back to OpenJFX. We had to add a number
> of classes
> that are missing on Dalvik and that are used by OpenJFX, and
> clearly we
> can't commit those in OpenJFX.
> 
> We had to make a number of changes to JavaFX files as well, in
> order to
> make them compile with JDK 1.7. Most of these were about
> removing Function
> and adding implementations for the default interface methods on
> ObservableList.
> I have no clear opinion on how these changed files could
> somehow be used
> from within OpenJFX, but I'm very open to suggestions.
> 
> Finally, keep in mind that this is a community effort. Nobody
> is paying for
> this, and it is done in our spare time. I'm doing my best to
> move forward
> as soon as I can, but I have other things to work on as well
> of course.
> However, the collaboration between the Java community and
> Oracle (mainly
> Tomas) has been great so far. It is in the interest of anyone
> working on or
> with Java to show the world that JavaFX runs on Android devices.
> 
> - Johan
> 
> 
> 


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