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♪ [intro music] ♪ Need to provide users with a way to select a value from the list of options? Try DropdownButton. To start, give it a list of options as DropdownMenuItems. DowndownMenuItems represent the things youll actually see in the drop-down menu. Since theyre all in a list together, they must all be of the same type. Provide a state variable containing the value of the selected drop-down menu item. And finally, give it an onChanged callback that calls setState to update the variable when a new value is selected. Now, technically, you can stop right there, or you can customize the drop-down button to your hearts content. Is that arrow too small? Make it bigger by adjusting the icon size. Or perhaps the default gray doesnt stand out enough? Give it a splash of color by providing an iconEnabledColor. Dont even like the arrow? Go ahead and replace it with a different icon. Have the drop-down content horizontally fill its parent by enabling IsExpanded. And you can even give