Extending an Attribute in Styles in Android

Question

I have a Button as follows:

  <Button
    android:id="@+id/previousQuestion"
    style="?android:attr/buttonBarButtonStyle"
    android:text="@string/questions_activity_previous_button"
    android:onClick="previousButton_OnClick"
  />

but I want to add more styling attribute which makes the Button hard to maintain later on so instead, I was going to put them into its own Style resource.

The question is "How am I going to still use ?android:attr/buttonBarButtonStyle?" I tried to do the following but didn't work:

<style name="PreviousQuestionButtonStyle" parent="android:attr/buttonBarButtonStyle">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_alignParentLeft">true</item>
</style>

Any ideas?

Tarik · Accepted Answer · 2014-01-01 07:40:00Z

1

Try to replace this

<style name="PreviousQuestionButtonStyle" parent="android:attr/buttonBarButtonStyle">

with this

<style name="PreviousQuestionButtonStyle" parent="@android:style/ButtonBar">

edited Jan 1, 2014 at 7:40

Tarik

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answered Jan 1, 2014 at 2:26

Greg Ennis

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3 Comments

tomrozb Over a year ago

It doesn't look the same as ?android:attr/buttonBarButtonStyle

Edijae Crusar Over a year ago

@android:style/ButtonBar doesn't produce the same result as android:attr/buttonBarButtonStyle. I wonder how this answer is marked correct.

Rob Drimmie Over a year ago

For reasons I don't understand, this solution worked really well for me in my project.

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