I'm getting error: Caused by: : Attempt to invoke virtual method 'long ()' on a null object referenceįindViewById is not listing my spinner in R.id. In the beginnings, I'm learning to get an item selected in list from Spinner in display in text view after clicking on a button. in Android Studio, 291 creating objects, 224, 236 creating spinners. When you run the app, you will get below screen: When you click on dropdown and select china, you will get below screen. I started reading book head first Android. 148 letters, adding to numbers, 144146 lifecycle, 125 line comments.
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