更新到支持工具后再次获取java.lang.NoClassDefFoundError:android.support.v7.internal.view.menu.i

Question

我已经实现了https://code.google.com/p/android/issues/detail?id=78377上列出的众多解决方案中的一个解决此问题的4.2.2手机,但现在我已更新为支持工具23问题又回来了.如果您查看该问题报告,您会看到自更新以来有很多人遇到同样的问题.NoClassDefFoundError:android.support.v7.internal.view.menu.MenuBuilder上的解决方案也不起作用,因为它们来自https://code.google.com/p/android/issues/detail?id=78377

这是我得到的例外:

java.lang.NoClassDefFoundError: android.support.v7.internal.view.menu.i
       at android.support.v7.widget.ActionMenuView.getMenu(ActionMenuView.java:643)
       at android.support.v7.widget.Toolbar.ensureMenu(Toolbar.java:876)
       at android.support.v7.widget.Toolbar.getMenu(Toolbar.java:847)
       at android.support.v7.internal.widget.ToolbarWidgetWrapper.getMenu(ToolbarWidgetWrapper.java:702)
       at android.support.v7.internal.app.ToolbarActionBar.getMenu(ToolbarActionBar.java:583)
       at android.support.v7.internal.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:441)
       at android.support.v7.internal.app.ToolbarActionBar$1.run(ToolbarActionBar.java:65)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
       at android.view.Choreographer.doCallbacks(Choreographer.java:579)
       at android.view.Choreographer.doFrame(Choreographer.java:547)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
       at android.os.Handler.handleCallback(Handler.java:800)
       at android.os.Handler.dispatchMessage(Handler.java:100)
       at android.os.Looper.loop(Looper.java:194)
       at android.app.ActivityThread.main(ActivityThread.java:5391)
       at java.lang.reflect.Method.invokeNative(Method.java)
       at java.lang.reflect.Method.invoke(Method.java:525)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
       at dalvik.system.NativeStart.main(NativeStart.java)

我的节目有这个:

-keep class !android.support.v7.internal.view.menu.**,android.support.** {*;}

有解决方案吗 得到了很多用户的抱怨.

Answer 1

您的ProGuard"保持类"规则需要更新,因为目标类不再被混淆.在支持工具的第23版中,Google将与菜单相关的类移出内部包.我可以确认以下ProGuard规则消除了在运行Android 4.2.2的某些三星设备上看到的NoClassDefFoundError.

# Workaround for conflict with certain OEM-modified versions of the Android appcompat
# support libs, especially Samsung + Android 4.2.2
# See this thread for more info:
#   https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=78377
-keepattributes **
# Keep all classes except the ones indicated by the patterns preceded by an exclamation mark
-keep class !android.support.v7.view.menu.**,!android.support.design.internal.NavigationMenu,!android.support.design.internal.NavigationMenuPresenter,!android.support.design.internal.NavigationSubMenu,** {*;}
# Skip preverification
-dontpreverify
# Specifies not to optimize the input class files
-dontoptimize
# Specifies not to shrink the input class files
-dontshrink
# Specifies not to warn about unresolved references and other important problems at all
-dontwarn **
# Specifies not to print notes about potential mistakes or omissions in the configuration, such as
# typos in class names or missing options that might be useful
-dontnote **

我强烈建议您使用dex2jar和jd来确认所需的混淆已经发生(在此处描述:https://stackoverflow.com/a/10191338/315702 ).不幸的是,每次升级支持工具时都应该这样做,以防再次移动或重命名包.

谷歌将这些类移出"内部"包,希望这可以避免导致NoClassDefFoundError的类路径冲突.然而,随着克里斯诅咒线程的这个bug(上注明https://code.google.com/p/android/issues/detail?id=78377),他们并没有进行测试,以验证修正-和很多人从那以后你报告了同样的崩溃:

是的,我们决定对内部类进行一次性重命名,这应该解决这个问题.我没有对这些设备进行过测试,也没有计划做任何一个.