ios - 如何在 iOS 中将 UIPickerView 文本颜色更改为白色

Question

我想知道是否有人知道如何将 UIPickerView 文本颜色更改为白色。我的代码如下:

代码:

(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{

    [self.pickerView setValue:[UIColor whiteColor] forKey:@"textColor"];

}

有什么想法吗？

Answer 1

有一种委托(delegate)方法，您可以通过它获得所需的输出。

objective-C :

- (NSAttributedString *)pickerView:(UIPickerView *)pickerView attributedTitleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    NSString *strTitle = @"YourTitle";
    NSAttributedString *attString = [[NSAttributedString alloc] initWithString:strTitle attributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];

    return attString;

}

swift :

func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {

    let strTitle = "YourTitle"   
    let attString = NSAttributedString(string: strTitle, attributes: [NSForegroundColorAttributeName : UIColor.whiteColor()])
    return attString
}

希望这对你有帮助:)