classes could not be instantiated: - android.support.v7.internal.widget.ActionBarOverlayLayout

本文解决了Android Studio中新建Project时遇到的Activity设计页面错误问题。通过修改res/values/styles.xml文件中的AppTheme设置,将Theme.AppCompat.Light.DarkActionBar更改为Base.Theme.AppCompat.Light.DarkActionBar,从而解决了无法实例化ActionBarOverlayLayout的错误。

问题描述:

在Android Studio中新建一个Project,Activity的Design页面有错误提示:

The following classes could not be instantiated: - android.support.v7.internal.widget.ActionBarOverlayLayout
java.lang.NoClassDefFoundError: Could not initialize class android.support.v7.internal.widget.ActionBarOverlayLayout
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:413)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:105)
at com.android.tools.idea.rendering.LayoutlibCallback.loadView(LayoutlibCallback.java:177)
.......................................

解决办法:

打开文件res/values/styles.xml,

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
</style>
       修改为
<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
</style>

06-05 05:19:55.434 8556 8556 D AndroidRuntime: Shutting down VM 06-05 05:19:55.437 8556 8556 E AndroidRuntime: FATAL EXCEPTION: main 06-05 05:19:55.437 8556 8556 E AndroidRuntime: Process: com.avatr.commonservice, PID: 8556 06-05 05:19:55.437 8556 8556 E AndroidRuntime: java.util.ServiceConfigurationError: com.avatr.common.base.modules.BusinessInterface: Provider com.avatr.commonservice.updatecountry.UpdateCountryManager could not be instantiated 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader.fail(ServiceLoader.java:233) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader.-$$Nest$smfail(Unknown Source:0) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:392) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:416) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader$1.next(ServiceLoader.java:494) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at com.avatr.common.base.BusinessImplClassFactory.next(BusinessImplClassFactory.java:41) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at com.avatr.common.base.modules.ModulesManaer.initModule(ModulesManaer.java:37) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at com.avatr.common.base.ComService.onCreate(ComService.java:39) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.app.ActivityThread.handleCreateService(ActivityThread.java:4736) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.app.ActivityThread.-$$Nest$mhandleCreateService(Unknown Source:0) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2333) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:218) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.os.Looper.loop(Looper.java:307) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:8309) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:573) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: Caused by: java.lang.IllegalAccessException: void com.avatr.commonservice.updatecountry.UpdateCountryManager.<init>() is not accessible from java.lang.Class<java.util.ServiceLoader$LazyIterator> 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.lang.Class.newInstance(Native Method) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:388) 06-05 05:19:55.437 8556 8556 E AndroidRuntime: ... 15 more
06-07
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