having 2 theme, can dynamically switched.
there txtcolor attribute defined in attrs.xml
<attr name=“txtcolor” format="reference" /> in themes.xml, defined color attribute in different theme
<style name=“customlight" parent="apptheme.base"> <item name="txtcolor”>#000000</item> <style name=“customdark" parent="apptheme.base"> <item name="txtcolor”>#ffffff</item> in layout file, using attribute fine
android:textcolor="?attr/txtcolor" but got exception when try use txtcolor attribute
caused by: android.content.res.resources$notfoundexception: resource id #0x7f010015 txtview.settextcolor(getresources().getcolor(r.attr.txtcolor)); question: how change color dynamically using attribute?
first attribute format should "color"
<attr name="txtcolor" format="color"/>
then can set color doing this:
int[] attrs = {r.attr.txtcolor} ; try { //getpackagemanager() can throw exeption activity activity = getactivity(); themeid = activity.getpackagemanager().getactivityinfo(activity.getcomponentname(), 0).theme; typedarray ta = activity.obtainstyledattributes(themeid, attrs); int color = ta.getcolor(0, color.black); //i set black default color txtview.settextcolor(color); ta.recycle(); } catch (namenotfoundexception e) { e.printstacktrace(); } 