Getting Fatal Exception: java.lang.NullPointerException

[varun514]

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:457) at android.widget.ArrayAdapter.getDropDownView(ArrayAdapter.java:505) at fr.ganfra.materialspinner.MaterialSpinner$HintAdapter.buildView(MaterialSpinner.java:786) at fr.ganfra.materialspinner.MaterialSpinner$HintAdapter.getDropDownView(MaterialSpinner.java:774) at android.widget.Spinner$DropDownAdapter.getDropDownView(Spinner.java:1007) at android.widget.Spinner$DropDownAdapter.getView(Spinner.java:1003) at android.widget.Spinner.measureContentWidth(Spinner.java:869) at android.widget.Spinner$DropdownPopup.computeContentWidth(Spinner.java:1240) at android.widget.Spinner$DropdownPopup.show(Spinner.java:1266) at android.widget.Spinner.performClick(Spinner.java:792) at android.view.View.performClickInternal(View.java:7218) at android.view.View.access$3800(View.java:824) at android.view.View$PerformClick.run(View.java:27719) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:228) at android.app.ActivityThread.main(ActivityThread.java:7782) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)

This issue is coming for me and it is not producible. Basically I am attaching the materialSpinner with a null Array<String> adapter and after data comes from api then adapter is updated.