Venator85 Venator85 - 4 months ago 13
Android Question

Same-named attributes in attrs.xml for custom view

I'm writing a few custom views which share some same-named attributes. In their respective

<declare-styleable>
section in
attrs.xml
I'd like to use the same names for attributes:

<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="MyView1">
<attr name="myattr1" format="string" />
<attr name="myattr2" format="dimension" />
...
</declare-styleable>

<declare-styleable name="MyView2">
<attr name="myattr1" format="string" />
<attr name="myattr2" format="dimension" />
...
</declare-styleable>
</resources>


I'm getting an error saying that
myattr1
and
myattr2
are already defined. I found that I should omit the
format
attribute for
myattr1
and
myattr2
in
MyView2
, but if I do that, I obtain the following error in the console:

[2010-12-13 23:53:11 - MyProject] ERROR: In <declare-styleable> MyView2, unable to find attribute


Is there a way I could accomplish this, maybe some sort of namespacing (just guessing)?

Thanks for your help ;)

Answer

SOLVED!

Simply extract common attributes from both views and add them directly as children of the <resources> node:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="myattr1" format="string" />
    <attr name="myattr2" format="dimension" />

    <declare-styleable name="MyView1">
        <attr name="myattr1" />
        <attr name="myattr2" />
        ...
    </declare-styleable>

    <declare-styleable name="MyView2">
        <attr name="myattr1" />
        <attr name="myattr2" />
        ...
    </declare-styleable>
</resources>