uicolor求教，如何获取UIColor的RGB值呢？

怎么改变UITableViewCell中被选择行的文本颜色

自定义颜色和背景设置 　　改变UITableViewCell选中时背景色： 　　UIColor *color = [[UIColoralloc]initWithRed:0.0green:0.0blue:0.0alpha:1];//通过RGB来定义自己的颜色 　　[html] view plaincopyprint? 　　01.cell.selectedBackgroundView = [[[UIView alloc] initWithFrame:cell.frame] autorelease]; 　　02.cell.selectedBackgroundView.backgroundColor = [UIColor xxxxxx]; 　　cell.selectedBackgroundView = [[[UIView alloc] initWithFrame:cell.frame] autorelease]; 　　cell.selectedBackgroundView.backgroundColor = [UIColor xxxxxx]; 　　3自定义UITableViewCell选中时背景 　　[html] view plaincopyprint? 　　01.cell.selectedBackgroundView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"cellart.png"]] autorelease]; 　　02.还有字体颜色 　　03.cell.textLabel.highlightedTextColor = [UIColor xxxcolor]; [cell.textLabel setTextColor:color];//设置cell的字体的颜色

如何将nsstring 转换为UIColor呢？

SEL blackSel = NSSelectorFromString(@"blackColor");UIColor* tColor = nil;if ([UIColor respondsToSelector: blackSel]) tColor = [UIColor performSelector:blackSel];

swift UIColor的类方法UIColor.RGBColor怎么没有了

本来就没那个的。

用这个构造器 let rgbColor = UIColor(red: <#CGFloat#>, green: <#CGFloat#>, blue: <#CGFloat#>, alpha: <#CGFloat#>)

如何修改UIActionSheet字体和颜色

实现UIActionSheet 的代理 - (void)willPresentActionSheet:(UIActionSheet *)actionSheet; // before animation and showing view - (void)willPresentActionSheet:(UIActionSheet *)actionSheet { for (UIView *subViwe in actionSheet.subviews) { if ([subViwe isKindOfClass:[UIButton class]]) { UIButton *button = (UIButton*)subViwe; [button setTitleColor:[UIColor colorWithHexString:BLUE_GREEN_COLOR] forState:UIControlStateNormal]; } } }

求教，如何获取UIColor的RGB值呢？

CGFloat R, G, B; UIColor *uiColor = curView.backgroundColor;CGColorRef color = [uiColor CGColor];int numComponents = CGColorGetNumberOfComponents(color); if (numComponents == 4){ const CGFloat ponents = CGColorGetComponents(color); R =ponents[0]; G =ponents[1]; B =ponents[2];}