[Monodroid] New build error, unable to build

[Paul Camacho]

I get this error often interactively, right after I hand-edit a layout XML. It's *always* been about me forgetting a closing bracket, every time. With interactive I mean: do the build, deploy, change layout, build, oops error. So I knew exactly where to look and never really bothered to read the actual message text. BTW I think I ran into that sample yesterday as I googled "xmlns:binding" but then Jon's post popped in.


Am 03.03.2011 um 16:44 schrieb Chris Erickson <chris at cartopac.com>:

> Grr, I need to get better at digging through those error messages.  I was
> following an example from an android project, and that's how they had done
> their namespace, so I didn't think to look there.
> 
> Thank you,
> 
> 
> 
> On 3/2/11 5:21 PM, "Jonathan Pryor" <jpryor at novell.com> wrote:
> 
>> On Mar 2, 2011, at 4:41 PM, Chris Erickson wrote:
>>> I'm unable to build again, with an unhelpful error.  Can anybody add
>>> any insight?
>> 
>> What, the following isn't clear enough: ;-)
>> 
>>> 
>>> /Users/chriserickson/Projects/MultiTargetSampleIOS/MultiTargetSampleMonoD
>>> roid/obj/Debug/res/layout/main.axml:9: error: No resource identifier
>>> found for attribute 'text' in package 'com.cartopac.android.binding'
>> 
>> As per your later email, you have:
>> 
>>   <LinearLayout ...
>> 
>> xmlns:binding="http://schemas.android.com/apk/res/com.cartopac.android.bin
>> ding"
>>> 
>>       <TextView ...
>>               binding:text="TextDisplayBinding"
>>               ...
>> 
>> The problem is that `aapt` doesn't like this. At all.
>> 
>> Doing the same thing (custom xmlns declaration + binding:text attribute)
>> within Eclipse results in the same error.
>> 
>> However, one thing that stood out to me was:
>> 
>> 
>> xmlns:binding="http://schemas.android.com/apk/res/com.cartopac.android.bin
>> ding"
>> 
>> This didn't strike me as being "kosher," as you're sticking your own
>> custom string after someone elses TLD. Don't do that.
>> 
>> In fact:
>> 
>> 
>> http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=too
>> ls/aapt/XMLNode.cpp;h=c0d74275a8a6a6883fedeed008ab6e993e4658cc;hb=HEAD#l49
>> 
>> If an XML namespace starts with RESOURCES_PREFIX, aka
>> RESOURCES_ROOT_NAMESPACE, aka "http://schemas.android.com/apk/res/", then
>> `aapt` considers the namespace to be "public" and treats it specially,
>> which is your actual problem.
>> 
>> Consequently, if I change the above xml namespace declaration to:
>> 
>>   xmlns:binding="http://com.cartopac.android.binding"
>> 
>> then `aapt` builds the Eclipse project fine, so I believe the actual
>> problem is that you chose a terrible xml namespace ID.
>> 
>> - Jon
>> 
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