how to make enum values with | in them

Question

I declared an android custom view that has an enum in it

   <attr name="ff_type" format="enum">
            <enum name="small" value="1" />
            <enum name="big" value="32" />
            <enum name="medium" value="8288" />

        </attr>

how to allow in my xml of the custom view to do app:ff_type="small|medium" ?

weston · Accepted Answer · 2014-06-12T08:42:19.737

1

Use flag rather than enum:

<attr name="ff_type" format="flag">
    <flag name="small" value="1" />
    <flag name="big" value="32" />
    <flag name="medium" value="8288" />
</attr>

Inclusion of format="flag" is optional.

8288 is an odd choice, you're better sticking to powers of 2. As it stands 8288 = 32 * 259. Therefore you can't select medium without implying big.

<attr name="ff_type">
    <flag name="small" value="1" />
    <flag name="medium" value="2" />
    <flag name="big" value="4" />
</attr>

Then you can optionally add additional values as shortcuts:

<attr name="ff_type">
    <flag name="small" value="1" />
    <flag name="medium" value="2" />
    <flag name="big" value="4" />
    <flag name="smallerThanBig" value="3" />
</attr>

So here smallerThanBig is the same as small|medium (but you can use both).

edited Jun 12 '14 at 08:42

answered Jun 12 '14 at 07:58

weston

54,145
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You are almost correct , instead of format=flag i need to put format=integer and the – Lena Bru Jun 12 '14 at 08:28
"isnt bitwise or between the values"? What is it then? – weston Jun 12 '14 at 08:34
I'd drop the `format` altogether rather than choosing `integer` see if that helps. – weston Jun 12 '14 at 08:35

moonlus · Answer 2 · 2023-01-04T08:13:32.387

0

<flag/>can be multiple,like gravity="center | left"
but <enum/> must be single,like layout_height="wrap_content"

edited Jan 04 '23 at 08:13

answered Jan 04 '23 at 08:12

moonlus

31
4

how to make enum values with | in them

2 Answers2