Getting Fatal Exception

[yogigorle]

I am Implementing your Android-Hint-Spinner library in one of my projects and i am getting a crash , the details of the crash is

Fatal Exception,

at me.srodrigo.androidhintspinner.HintSpinner$1.onItemSelected(HintSpinner.java)
at android.widget.AdapterView.fireOnSelected + 914(AdapterView.java:914)
at android.widget.AdapterView.dispatchOnItemSelected + 903(AdapterView.java:903)
at android.widget.AdapterView.selectionChanged + 897(AdapterView.java:897)
at android.widget.AdapterView.checkSelectionChanged + 1068(AdapterView.java:1068)
at android.widget.AdapterView.handleDataChanged + 1044(AdapterView.java:1044)
at android.widget.AbsSpinner.onMeasure + 184(AbsSpinner.java:184)
at android.widget.Spinner.onMeasure + 507(Spinner.java:507)
at android.support.v7.widget.AppCompatSpinner.onMeasure(AppCompatSpinner.java)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout + 1436(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical + 722(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure + 613(LinearLayout.java:613)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout + 1436(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical + 722(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure + 613(LinearLayout.java:613)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout + 1436(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical + 722(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure + 613(LinearLayout.java:613)
at android.view.View.measure + 17555(View.java:17555)
at android.widget.ScrollView.measureChildWithMargins + 1260(ScrollView.java:1260)
at android.widget.FrameLayout.onMeasure + 436(FrameLayout.java:436)
at android.widget.ScrollView.onMeasure + 337(ScrollView.java:337)
at android.view.View.measure + 17555(View.java:17555)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout + 1436(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical + 722(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure + 613(LinearLayout.java:613)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure + 436(FrameLayout.java:436)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure + 436(FrameLayout.java:436)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.LinearLayout.measureChildBeforeLayout + 1436(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical + 722(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure + 613(LinearLayout.java:613)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewGroup.measureChildWithMargins + 5536(ViewGroup.java:5536)
at android.widget.FrameLayout.onMeasure + 436(FrameLayout.java:436)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure + 2616(PhoneWindow.java:2616)
at android.view.View.measure + 17555(View.java:17555)
at android.view.ViewRootImpl.performMeasure + 2028(ViewRootImpl.java:2028)
at android.view.ViewRootImpl.measureHierarchy + 1186(ViewRootImpl.java:1186)
at android.view.ViewRootImpl.performTraversals + 1392(ViewRootImpl.java:1392)
at android.view.ViewRootImpl.doTraversal + 1074(ViewRootImpl.java:1074)
at android.view.ViewRootImpl$TraversalRunnable.run + 5904(ViewRootImpl.java:5904)
at android.view.Choreographer$CallbackRecord.run + 773(Choreographer.java:773)
at android.view.Choreographer.doCallbacks + 586(Choreographer.java:586)
at android.view.Choreographer.doFrame + 556(Choreographer.java:556)
at android.view.Choreographer$FrameDisplayEventReceiver.run + 759(Choreographer.java:759)
at android.os.Handler.handleCallback + 739(Handler.java:739)
at android.os.Handler.dispatchMessage + 95(Handler.java:95)
at android.os.Looper.loop + 135(Looper.java:135)
at android.app.ActivityThread.main + 5265(ActivityThread.java:5265)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke + 372(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run + 902(ZygoteInit.java:902)
at com.android.internal.os.ZygoteInit.main + 697(ZygoteInit.java:697)