CODEWITHSUNDEEP
android
Venu Annaram
Venu Annaram

Reputation: 287

custom attributes are not working for themes in android

In my attr.xml, I have defined descriptor_bg like:

</declare-styleable>    
    <attr name="descriptor_bg" format="reference|color" />
    </declare-styleable>

and in style.xml:

<style name="Theme_blue">
    <item name="descriptor_bg">@android:color/black</item>
    <item name="android:windowNoTitle">true</item>
</style>

I have used above attribute like:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
    android:angle="90" />
<solid android:color="@attr/descriptor_bg"/>
<stroke
    android:width="2dp"
    android:color="@color/blue_stroke_bg" />

But I am getting an exception like:

android.content.res.Resources$NotFoundException: File res/drawable-mdpi/descriptor_bg.xml

from drawable resource ID #0x7f020006

java.lang.UnsupportedOperationException: Can't convert to color: type=0x1
File res/drawable-mdpi/descriptor_bg.xml from drawable resource ID #0x7f020006

Can anyone please help me?

Upvotes: 1

Views: 1429

Answers (2)

Hassan Ibraheem
Hassan Ibraheem

Reputation: 2369

I think the correct syntax is ?attr/descriptor_bg.

Unfortunately this probably won't fix your issue, because theme attributes aren't supported in XML drawables. This was fixed in L-preview release though.

Upvotes: 1

waqaslam
waqaslam

Reputation: 68187

I guess you need to stick to a single format identifier, like:

<attr name="descriptor_bg" format="color" />

It should automatically translate the color from RGB value or reference.

Upvotes: 0

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