[android-developers] Don't mix Eclipse and Ant

2012-05-11 Thread Jacob Abrams
Sorry for this rant, but I have a number of complaints with the Android 
build system I'd like to air.

Firstly thank you Android build system engineers for adding incremental 
building to the build system, this is a hard problem and your work here is 
appreciated.

Now on to the major issue I just spent the evening debugging:

When you combine eclipse with the command line Ant build you may get 
runtime errors in your APK!

If you are using eclipse and it can't build one of your library projects 
because the java source has compilation errors Eclipse will go ahead and 
make class files anyway! The methods in these class files will be filled 
with junk like:

throw new Error("Unresolved compilation problem: \n");

If you then go ahead and build the same project with Ant in the 
commandline, the new incremental checks in the Android Ant build script 
will see that it is already been compiled, skip that step and use these 
class files in the generated APK. Resulting in runtime errors.

Jacob Abrams

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Re: [android-developers] Don't mix Eclipse and Ant

2012-05-11 Thread Nikolay Elenkov
On Fri, May 11, 2012 at 5:58 PM, Jacob Abrams  wrote:
>
> If you are using eclipse and it can't build one of your library projects
> because the java source has compilation errors Eclipse will go ahead and
> make class files anyway! The methods in these class files will be filled
> with junk like:
>
> throw new Error("Unresolved compilation problem: \n");
>
> If you then go ahead and build the same project with Ant in the commandline,
> the new incremental checks in the Android Ant build script will see that it
> is already been compiled, skip that step and use these class files in the
> generated APK. Resulting in runtime errors.
>

Sounds nasty, but did you file a bug? You should, if you haven't.

>From what I've seen, the Ant build system doesn't seem to get much testing,
sometimes it's downright broken between releases. Haven't tried it lately
though, so things might have changed.

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Re: [android-developers] Don't mix Eclipse and Ant

2012-05-11 Thread Daniel Drozdzewski
Jacob,

Don't use tools that modify the project pulling rugs from underneath
Eclipse's feet. As an IDE it has specific stages to package and build
each project and it needs to hook into those, so that it understands,
what has happened and what is to happen.

You can either use a tool chain that is Eclipse free (disjoint source
editor + ant to build) or make use of Eclipse's ability to build using
Ant:

http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2FgettingStarted%2Fqs-93_project_builder.htm
http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2FgettingStarted%2Fqs-80_ant.htm


Daniel



On 11 May 2012 09:58, Jacob Abrams  wrote:
> Sorry for this rant, but I have a number of complaints with the Android
> build system I'd like to air.
>
> Firstly thank you Android build system engineers for adding incremental
> building to the build system, this is a hard problem and your work here is
> appreciated.
>
> Now on to the major issue I just spent the evening debugging:
>
> When you combine eclipse with the command line Ant build you may get runtime
> errors in your APK!
>
> If you are using eclipse and it can't build one of your library projects
> because the java source has compilation errors Eclipse will go ahead and
> make class files anyway! The methods in these class files will be filled
> with junk like:
>
> throw new Error("Unresolved compilation problem: \n");
>
> If you then go ahead and build the same project with Ant in the commandline,
> the new incremental checks in the Android Ant build script will see that it
> is already been compiled, skip that step and use these class files in the
> generated APK. Resulting in runtime errors.
>
> Jacob Abrams
>
> --
> You received this message because you are subscribed to the Google
> Groups "Android Developers" group.
> To post to this group, send email to android-developers@googlegroups.com
> To unsubscribe from this group, send email to
> android-developers+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/android-developers?hl=en



-- 
Daniel Drozdzewski

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