我有一个奇怪probem使用AppCompat库22.2新介绍：layout_behavior

I have a strange probem using the AppCompat Lib 22.2 with the new introduced: layout_behavior

如果我使用它的价值@字符串/ appbar_scrolling_view_behavior，这里所描述的 Android的设计支持库中的应用程序与下面的异常终止：

If i use it with the value "@string/appbar_scrolling_view_behavior" , as described here Android Design Support Lib the application terminates with the following exception:

Could not inflate Behavior subclass android.support.design.widget.Settings
     Caused by: java.lang.RuntimeException: Could 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

如果我更改为：

app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior"

一切工作正常。

everything works fine.

什么我失踪？

推荐答案

有关其他人谁遇到这样的异常，并使用ProGuard的 - 你需要添加以下ProGuard的规则：

For others who encounter this exception and use proguard - you need to add following proguard rules:

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

如果你不想让所有的设计库组件可以使用的：

or if you don't want to keep all of the design library components you can use:

-keepattributes *Annotation*
-keep public class * extends android.support.design.widget.CoordinatorLayout.Behavior { *; }
-keep public class * extends android.support.design.widget.ViewOffsetBehavior { *; }