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こんにちは、私はAndroid用のXamarin C＃を使用しています。 ListViewでウィジェットを作成しようとしました。Xamarin Androidサービスにバインドできませんヌルポインタ
私の移植コード：https://github.com/Nailik/AppWidgetListView
まず私は、C＃にこれを移植： https://laaptu.wordpress.com/2013/07/19/android-app-widget-with-listview/ （ソース：https://github.com/laaptu/appwidget-listview/tree/appwidget-listview1）
をそれから私は、この変更をした：https://forums.xamarin.com/discussion/16930/app-widget-with-listview
、今私は立ち往生。私はそれだけでremoteviewsに空のビューを示していますし、このエラーでクラッシュしている私の画面にウィジェットを追加しようと毎回：
Java.Lang.RuntimeException: Unable to bind to service [email protected] with Intent { dat=intent: cmp=StimeApplication.StimeApplication/md5037fca43706e0b812912372d4076c895.WidgetService (has extras) }: java.lang.NullPointerException: Attempt to invoke interface method 'void android.widget.RemoteViewsService$RemoteViewsFactory.onCreate()' on a null object reference ---> Java.Lang.NullPointerException: Attempt to invoke interface method 'void android.widget.RemoteViewsService$RemoteViewsFactory.onCreate()' on a null object reference
at --- End of managed exception stack trace ---
at java.lang.NullPointerException: Attempt to invoke interface method 'void android.widget.RemoteViewsService$RemoteViewsFactory.onCreate()' on a null object reference
at at android.widget.RemoteViewsService.onBind(RemoteViewsService.java:243)
at at android.app.ActivityThread.handleBindService(ActivityThread.java:2939)
at at android.app.ActivityThread.access$1900(ActivityThread.java:169)
at at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1511)
at at android.os.Handler.dispatchMessage(Handler.java:111)
at at android.os.Looper.loop(Looper.java:194)
at at android.app.ActivityThread.main(ActivityThread.java:5552)
at at java.lang.reflect.Method.invoke(Native Method)
at at java.lang.reflect.Method.invoke(Method.java:372)
at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:964)
at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:759)
--- End of inner exception stack trace ---
at --- End of managed exception stack trace ---
at java.lang.RuntimeException: Unable to bind to service [email protected] with Intent { dat=intent: cmp=StimeApplication.StimeApplication/md5037fca43706e0b812912372d4076c895.WidgetService (has extras) }: java.lang.NullPointerException: Attempt to invoke interface method 'void android.widget.RemoteViewsService$RemoteViewsFactory.onCreate()' on a null object reference
at at android.app.ActivityThread.handleBindService(ActivityThread.java:2952)
at at android.app.ActivityThread.access$1900(ActivityThread.java:169)
at at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1511)
at at android.os.Handler.dispatchMessage(Handler.java:111)
at at android.os.Looper.loop(Looper.java:194)
at at android.app.ActivityThread.main(ActivityThread.java:5552)
at at java.lang.reflect.Method.invoke(Native Method)
at at java.lang.reflect.Method.invoke(Method.java:372)
at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:964)
at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:759)
at Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void android.widget.RemoteViewsService$RemoteViewsFactory.onCreate()' on a null object reference
at at android.widget.RemoteViewsService.onBind(RemoteViewsService.java:243)
at at android.app.ActivityThread.handleBindService(ActivityThread.java:2939)
at ... 9 more
私が誰かが私を助けることができると思いますが、私は何を検索する見当がつかないと、このエラーは出番から。