我正在使用urbanairship来显示通知。我已经更新了我的Android SDK到最新更新，它开始显示与urbanairship提供商相关的错误，它在旧版本下工作正常。
05-22 17:54:30.476: E/AndroidRuntime(575): FATAL EXCEPTION: main
05-22 17:54:30.476: E/AndroidRuntime(575): java.lang.RuntimeException: Unable to get provider com.urbanairship.UrbanAirshipProvider: java.lang.ClassNotFoundException: com.urbanairship.UrbanAirshipProvider
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.installProvider(ActivityThread.java:4289)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.installContentProviders(ActivityThread.java:4041)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3995)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.access$1300(ActivityThread.java:127)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1217)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.os.Handler.dispatchMessage(Handler.java:99)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.main(ActivityThread.java:4508)
05-22 17:54:30.476: E/AndroidRuntime(575): at java.lang.reflect.Method.invokeNative(Native Method)
05-22 17:54:30.476: E/AndroidRuntime(575): at java.lang.reflect.Method.invoke(Method.java:511)
05-22 17:54:30.476: E/AndroidRuntime(575): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
05-22 17:54:30.476: E/AndroidRuntime(575): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
05-22 17:54:30.476: E/AndroidRuntime(575): at dalvik.system.NativeStart.main(Native Method)
05-22 17:54:30.476: E/AndroidRuntime(575): Caused by: java.lang.ClassNotFoundException: com.urbanairship.UrbanAirshipProvider
05-22 17:54:30.476: E/AndroidRuntime(575): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
05-22 17:54:30.476: E/AndroidRuntime(575): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
05-22 17:54:30.476: E/AndroidRuntime(575): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
05-22 17:54:30.476: E/AndroidRuntime(575): at android.app.ActivityThread.installProvider(ActivityThread.java:4274)
05-22 17:54:30.476: E/AndroidRuntime(575): ... 12 more
我在我的项目中使用urbanairship-lib-2.1.4.jar。有什么兼容性问题吗?
哇!刚刚找到了解决办法!这个问题是在Android Private Libraries中，它是在最近的更新中引入的。由于某些原因，默认情况下它们在项目属性中被勾选。
去Project -> Properties -> Java Build Path -> Order and Export检查Android Private Libraries。这就解决了我的问题