小编Ken*_*ade的帖子

错误 ：

总共有三个片段。从第三个片段转到第一个片段后发生错误。当从第二个片段转到第一个片段时，我的应用程序不会崩溃。

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.direct.indianpeople, PID: 20204
    java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter selectedItemView
        at com.example.senthil.kotlin_tablayout.Fragment.nameFrag$onViewCreated$1.onItemSelected(Unknown Source:2)
        at android.widget.AdapterView.fireOnSelected(AdapterView.java:944)
        at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:933)
        at android.widget.AdapterView.selectionChanged(AdapterView.java:922)
        at android.widget.AdapterView.checkSelectionChanged(AdapterView.java:1105)
        at android.widget.AdapterView.handleDataChanged(AdapterView.java:1081)
        at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:191)
        at android.widget.Spinner.onMeasure(Spinner.java:602)
        at androidx.appcompat.widget.AppCompatSpinner.onMeasure(AppCompatSpinner.java:428)
        at android.view.View.measure(View.java:23355)
        at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227)
        at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572)
        at android.view.View.measure(View.java:23355)
        at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1326)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
        at android.widget.ScrollView.onMeasure(ScrollView.java:355)
        at android.view.View.measure(View.java:23355)
        at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1638)
        at android.view.View.measure(View.java:23355)
        at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227)
        at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572)
        at android.view.View.measure(View.java:23355)
        at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227)
        at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572)
        at android.view.View.measure(View.java:23355)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6758)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
        at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143)
        at …