如何设置HighlightedTextColor @ NSAttributedString

Question

我有一个使用NSAttributedString的自定义UITableViewCell.我希望它在选择单元格时改变颜色.如何使NSAttributedString与具有highlightTextColor设置的UILabel具有相同的行为？

我试图改变单元格的函数setSelected和setHighlighted的颜色,但似乎它们被调用到很晚(在touchUpInside上而不是touchDown)

提前致谢!

Answer 1

UILabel子类解决方案

@implementation CustomLabelHighlighted
{
    NSAttributedString *savedAttributedString;
}

-(void)setHighlighted:(BOOL)highlighted
{
    [super setHighlighted:highlighted];

    if (!highlighted) 
    {
       [super setAttributedText:savedAttributedString];
       return;
    }

    NSMutableAttributedString *highAttributedString = [savedAttributedString mutableCopy];
    NSRange range = NSMakeRange(0, highAttributedString.string.length);
    [highAttributedString addAttribute:NSForegroundColorAttributeName value:self.highlightedTextColor range:range];
    [super setAttributedText:highAttributedString];
}

- (void)setAttributedText:(NSAttributedString *)attributedText
{
    [super setAttributedText:attributedText];
    savedAttributedString = attributedText;
}

@end