java - Using AppCompat 'layout_behavior' with '@string/appbar_scrolling_view_behavior' throws exception -


i have strange probem using appcompat lib 22.2 new introduced: layout_behavior

if use value "@string/appbar_scrolling_view_behavior" , described here android design support lib application terminates following exception:

could not inflate behavior subclass android.support.design.widget.settings      caused by: java.lang.runtimeexception: not inflate behavior subclass android.support.design.widget.settings      caused by: java.lang.classnotfoundexception: android.support.design.widget.settings      caused by: java.lang.noclassdeffounderror: android/support/design/widget/settings      caused by: java.lang.classnotfoundexception: android.support.design.widget.settings

if change :

app:layout_behavior="android.support.design.widget.appbarlayout$scrollingviewbehavior"

everything works fine.

what i'm missing ?

for others encounter exception , use proguard - need add following proguard rules:

-keep class android.support.design.widget.** { *; } -keep interface android.support.design.widget.** { *; } -dontwarn android.support.design.**

or if don't want keep of design library components can use:

-keepattributes *annotation* -keep public class * extends android.support.design.widget.coordinatorlayout.behavior { *; } -keep public class * extends android.support.design.widget.viewoffsetbehavior { *; }

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