objective-c - 如何使用模拟器 5.0 在 xcode4.2 中将 NSAttributedString 对象设置为 uilabel？

Question

我无法使用模拟器 5.0 在 xcod4.2 中编写以下代码告诉我替代解决方案

NSMutableAttributedString *str=[[NSMutableAttributedString alloc] initwithString:@"This is Green and Red"];
NSDictionary *redatt=@{NSForeGroundColorAttributeName:[UIColor redColor]};
NSDictionary *greenatt=@{NSForeGroundColorAttributeName:[UIColor greenColor]};

[str setAttribute:greenatt range:NSMakeRange(9,5)];
[str setAttribute:redatt range:NSMakeRange(19,3)];

lbl.attributedText=str;

Answer 1

您需要导入CoreText Framework，然后执行它。尝试使用kCTForegroundColorAttributeName。有关更多信息，请参阅此示例

NSMutableAttributedString *str=[[NSMutableAttributedString alloc] initwithString:@"This is Green and Red"];


[str addAttribute:(NSString*)kCTForegroundColorAttributeName value:(id)[[UIColor redColor] CGColor] range:NSMakeRange(9,5)];
[str addAttribute:(NSString*)kCTForegroundColorAttributeName value:(id)[[UIColor greenColor] CGColor] range:NSMakeRange(19,3)];

lbl.attributedText=str;

Answer 2

试试这个，试过效果很好：

NSMutableAttributedString *str=[[NSMutableAttributedString alloc] initWithString:@"This is Green and Red"] ;

    NSDictionary *redatt=@{NSForegroundColorAttributeName:[NSColor redColor]};
    NSDictionary *greenatt=@{NSForegroundColorAttributeName:[NSColor greenColor]};

    [str addAttributes:redatt  range:NSMakeRange(9,5)];
    [str addAttributes:greenatt  range:NSMakeRange(1,4)];

    [lbl.textStorage setAttributedString:str];