当我在NullPointerException的{{1}}中设置minDate和maxDate时，我得到onCreate。
我迫不及待地寻找解决方案。
当我评论CalendarActivity和minDate行时，没有任何问题。
我使用日期范围调用日历（通过http POST使用AsyncTask），当我更改此范围并增加它时，有时也没有问题。
我的Logcat：
maxDate我将代码粘贴到06-17 12:32:39.636 21968-21968/com.example.lissar W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
06-17 12:32:39.660 21968-21968/com.example.lissar W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
06-17 12:32:39.664 21968-21968/com.example.lissar D/AndroidRuntime﹕ Shutting down VM
06-17 12:32:39.664 21968-21968/com.example.lissar W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xa4c00648)
06-17 12:32:39.676 21968-21968/com.example.lissar E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at android.widget.CalendarView.onScroll(CalendarView.java:1214)
at android.widget.CalendarView.access$900(CalendarView.java:76)
at android.widget.CalendarView$2.onScroll(CalendarView.java:1075)
at android.widget.AbsListView.invokeOnItemScrollListener(AbsListView.java:1340)
at android.widget.ListView.layoutChildren(ListView.java:1762)
at android.widget.AbsListView.onLayout(AbsListView.java:2012)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1660)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1436)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:349)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1976)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1730)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
at android.view.Choreographer.doCallbacks(Choreographer.java:562)
at android.view.Choreographer.doFrame(Choreographer.java:532)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
和minDate方法所在的位置。maxDate的末尾：
onCreate如何解决此错误？
答案 0 :(得分：0)