Question

我是android开发的新手，在运行时发生致命异常：

`com.ymapps.restaurants.mobifooddemo.single E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.ymapps.restaurants.mobifooddemo.single, PID: 930
java.lang.RuntimeException: Unable to start activity   ComponentInfo{com.ymapps.restaurants.mobifooddemo.single/com.ymapps.restaurants.YMAMainActivity}: com.a.a.a: Could not instantiate mapper : com.thoughtworks.xstream.mapper.EnumMapper :     com.thoughtworks.xstream.mapper.EnumMapper

        Caused by: com.a.a.a: Could not instantiate mapper :   
        at com.a.a.c.a(Unknown Source)
        at com.a.a.c.g(Unknown Source)
        at com.a.a.c.<init>(Unknown Source)
        at com.a.a.c.<init>(Unknown Source)
        at com.a.a.c.<init>(Unknown Source)
        at com.a.a.c.<init>(Unknown Source)
        at com.a.a.c.<init>(Unknown Source)

        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
        Caused by: java.lang.NoClassDefFoundError: com/thoughtworks/xstream/mapper/EnumMapper
        Caused by: java.lang.ClassNotFoundException: com.thoughtworks.xstream.mapper.EnumMapper
        Caused by: java.lang.ClassNotFoundException: com.thoughtworks.xstream.mapper.EnumMapper

Xstream1.4.7.jar被添加到libs文件夹中。

这显示.java文件中的错误

   import android.content.IIntentReceiver;
   import android.content.pm.IPackageManager;
   import android.net.IConnectivityManager;
   import com.google.android.collect.Lists;
   import com.android.internal.app.IVoiceInteractor;
   import libcore.io.DropBox; 

  etc

我无法理解这个问题。我认为xstream类无法通过应用程序识别。 xstream1.4.7.jar文件已添加为库

   build.gradle file:
   compile fileTree(include: ['*.jar'], dir: 'libs')
   compile files('libs/xstream-1.4.7.jar')

我该怎么办？请帮我.. 谢谢

android studio中的运行时异常：无法实例化mapper：xstream .jar

0 个答案: