How can I make the spinner width same as largest available item width

Question

I realize even I use wrap_content for my spinner (I avoid using match_parent as I do not want the spinner overly long), and using match_parent

Answer 1

You can try spinnerMode="dialog" but it is just a workaround, not the right answer. Because it will display a new window with a dialog.

So here is the way do to it. It will automatically fit the content.

It strongly depends how you set up your custom layout. May i suggest you to write your own xml file myspinner_custom_dropdown.xml. Recommanded way is now ConstraintLayout from androidX.

Important : you have yo use your custom layout with your adapter

dataAdapter.setDropDownViewResource(R.layout.myspinner_custom_dropdown);

That's all, you do not need some kinds of hardcored attributes in your spinner declaration.