android - Replace Action bar with toolbar -

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i'm using toolbar replace actionbar. going before replacing. after replacing gives me error:

java.lang.runtimeexception: unable start activity componentinfo{com.oi.mmg/com.oi.mmg.eventdetailsscreenactivity}: java.lang.illegalstateexception:

this activity has action bar supplied window decor. not request window.feature_action_bar , set windowactionbar false in theme use toolbar instead.

without knowing code suggest using parent theme application:

theme.appcompat.light.noactionbar

the property "windowactionbar" "false" default.

and if using appcompat activities should extend "appcompatactivity".


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