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StackOverflow 文件
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iOS 教程
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UIPickerView
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更改 pickerView 背景顏色和文字顏色
Objective-C
//Displays the country pickerView with black background and white text
[self. countryPicker setValue:[UIColor whiteColor] forKey:@"textColor"];
[self. countryPicker setValue:[UIColor blackColor] forKey:@"backgroundColor"];
迅速
let color1 = UIColor(colorLiteralRed: 1, green: 1, blue: 1, alpha: 1)
let color2 = UIColor(colorLiteralRed: 0, green: 0, blue: 0, alpha: 1)
pickerView2.setValue(color1, forKey: "textColor")
pickerView2.setValue(color2, forKey: "backgroundColor")