logcat

08-30 12:10:10.996      940-940/com.raditya.renunganonline E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.NullPointerException
            at com.raditya.renunganonline.adapter.NavDrawerListAdapter.getView(NavDrawerListAdapter.java:51)
            at android.widget.AbsListView.obtainView(AbsListView.java:2472)
            at android.widget.ListView.makeAndAddView(ListView.java:1775)
            at android.widget.ListView.fillDown(ListView.java:678)
            at android.widget.ListView.fillFromTop(ListView.java:739)
            at android.widget.ListView.layoutChildren(ListView.java:1614)
            at android.widget.AbsListView.onLayout(AbsListView.java:2307)
            at android.view.View.layout(View.java:14107)
            at android.view.ViewGroup.layout(ViewGroup.java:4655)
            at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:825)
            at android.view.View.layout(View.java:14107)
            at android.view.ViewGroup.layout(ViewGroup.java:4655)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14107)
            at android.view.ViewGroup.layout(ViewGroup.java:4655)
            at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655)
            at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513)
            at android.widget.LinearLayout.onLayout(LinearLayout.java:1426)
            at android.view.View.layout(View.java:14107)
            at android.view.ViewGroup.layout(ViewGroup.java:4655)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
            at android.view.View.layout(View.java:14107)
            at android.view.ViewGroup.layout(ViewGroup.java:4655)
            at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2049)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1870)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1142)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4709)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
            at android.view.Choreographer.doCallbacks(Choreographer.java:555)
            at android.view.Choreographer.doFrame(Choreographer.java:525)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4947)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
            at dalvik.system.NativeStart.main(Native Method)