富文本（NSMutableAttributedString）

干货：

- (void)viewDidLoad {

[super viewDidLoad];

NSString * tempStr = @"貌似这个叫富文本";

NSMutableAttributedString * attStr = [self stringTurnToAttributeStringWithString:tempStr

Font:25

TextColor:[UIColor redColor]

Range:NSMakeRange(5, 3)];

UILabel * label = [[UILabel alloc] initWithFrame:self.view.bounds];

label.textAlignment = NSTextAlignmentCenter;

label.attributedText = attStr;

[self.view addSubview:label];

}

- (NSMutableAttributedString *)stringTurnToAttributeStringWithString:(NSString *)string

Font:(CGFloat)fontSize

TextColor:(UIColor *)textColor

Range:(NSRange)range{

NSMutableAttributedString * attStr = [[NSMutableAttributedString alloc] initWithString:string];

[attStr addAttributes:@{NSForegroundColorAttributeName:textColor,

NSFontAttributeName:[UIFont systemFontOfSize:fontSize]}

range:range];

return attStr;

}