android - SpannableString not working when using AppCompat theme -

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i'm unable spannablestring work when set apptheme theme.appcompat.light.darkactionbar.

i have button , text set spannablestring. when use holo theme text renders expected, when switch appcompat theme span effects seam ignored. how can spannablestring work using appcompat theme?

enter image description here

styles.xml - when switching between 2 themes different results...

<resources>   <style name="apptheme" parent="theme.appcompat.light.darkactionbar" />   <!--<style name="apptheme" parent="@android:style/theme.holo.light" />--> </resources>

... button uses spannablestring

public static class placeholderfragment extends fragment {      public placeholderfragment() {     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {         view rootview = inflater.inflate(r.layout.fragment_main, container, false);          button button = (button) rootview.findviewbyid(r.id.button);          string detail = "abc";         string caption = string.format("2 %s", detail);         spannable span = new spannablestring(caption);          int detailindex = caption.indexof(detail);          span.setspan(new stylespan(typeface.bold), 0, detailindex, spannable.span_exclusive_exclusive);         span.setspan(new relativesizespan(0.5f), detailindex, detailindex+detail.length(), spannable.span_exclusive_exclusive);          button.settext(span);          return rootview;     } }

well, it's not tied appcompat-v7. if remove theme stuff entirely, , use default theme, on android 5.0+ theme.material, , same effect can seen there.

part of material design aesthetic button captions should caps, , implemented wiping out spans. appcompat-v7 works code on pre-5.0 devices, suggesting backported widget effects not include app-caps stuff, , delegating standard widgets on 5.0+.

adding android:textallcaps="false" button in layout seems clear problem.


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