MaterialSpinner
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NPE when clearing selection if no adapter set
When I try to clear the spinnerSelection.
spinner.setSelection(-1)
And then I get:
java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:344) at com.tiper.MaterialSpinner$DropDownAdapter.getCount(MaterialSpinner.kt:775) at com.tiper.MaterialSpinner.setSelection(MaterialSpinner.kt:131)
I get the list that would be used for the spinner from the server, and I was setting it to null
when no connection or connection error. Now I set to an empty array
and it works.
Maybe it's not a bug, but it took me a while to figure out that the problem was the null
adapter. Maybe you can throw a different exception? Or clear it anyway even if it has no adapter