Below code will change the background color of the UIPickerView to cyan showing it is a valid selection when total of row indexes = 6. Would like to have pickerLabel background in view(selected) to turn cyan instead in all four components when selection is valid. Any idea?Below code will change the background color of
阅读背景：
在Swift中进行有效选择时，如何使用多个组件在UIPickerView视图中更改文本的背景颜色
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