android - Error :java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity - 


<activity     android:name="com.luckyxmobile.timers4meplus.activity.widgetconfigactivity"     android:theme="@style/theme.pageindicator.dark">     <intent-filter>         <action android:name="android.appwidget.action.appwidget_configure" />          <category android:name="com.jakewharton.android.viewpagerindicator.sample.sample" />     </intent-filter> </activity>   <style name="theme.pageindicator.dark" parent="android:theme">     <item name="tpi_tabpadding">12dp</item>     <item name="tpi_tabripple">@style/darktabripplestyle</item>     <item name="tpi_indicatorheight">3dp</item>     <item name="tpi_indicatorcolor">@color/colorprimary</item>     <item name="android:textappearance">@style/darktabtextappearance</item>     <item name="android:background">@color/coloraccent</item>     <item name="tpi_mode">scroll</item> </style>

the above theme , style.when run app,show error. think maybe should "theme.appcompat" not "android:theme",but not sure!

whats logcat throws

error :java.lang.illegalstateexception: need use theme.appcompat theme (or descendant) activity

i guess, need extends appcompatactivity

public class widgetconfigactivity extends appcompatactivity {   // ... }

appcompatactivity appcompat-v7 library. principally, offers backport of action bar. since native action bar added in api level 11, not need appcompatactivity that. however, current versions of appcompat-v7 add limited backport of material design aesthetic, in terms of action bar , various widgets.

you can use theme.appcompat instead of android:theme .


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