Attribute由dic和range组成
NSMutableAttributedString *AttributedStr= [[NSMutableAttributedString alloc] init];
NSDictionary *DicAttribute1 = @{NSFontAttributeName:[UIFont systemFontOfSize:15.0f],NSForegroundColorAttributeName:[UIColor whiteColor]};
NSDictionary *DicAttribute2 = @{NSFontAttributeName:[UIFont systemFontOfSize:20.0f],NSForegroundColorAttributeName:[UIColor blackColor]};
[AttributedStr addAttributes:DicAttribute1range:NSMakeRange(0, 3)];
[AttributedStr addAttributes:DicAttribute2range:NSMakeRange(3, AttributedStr.length - 3)];
self.testLabel.attributedText = AttributedStr;
各属性字典设置
字体
NSDictionary *textFontAttribute = @{NSFontAttributeName:[UIFont systemFontOfSize:15.0f]};
颜色
NSDictionary *textColorAttribute = @{NSForegroundColorAttributeName:[UIColor blackColor]]};
行间距
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:2];
NSDictionary *widthDicAttribute = @{NSParagraphStyleAttributeName:paragraphStyle};
列间距
NSDictionary *segDicAttribute = @{NSKernAttributeName:[NSNumber numberWithInteger:0.7]};
下划线
NSDictionary *underLineDictAttribute = @{NSUnderlineStyleAttributeName:[NSNumber numberWithInteger:NSUnderlineStyleSingle],NSUnderlineColorAttributeName:[UIColor whiteColor]};
用于文字适配
NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize:14],NSParagraphStyleAttributeName:paragraphStyle,NSKernAttributeName:[NSNumber numberWithInteger:0.7]};
CGRect rect = [str boundingRectWithSize:CGSizeMake(text_w, 0) options:NSStringDrawingUsesLineFragmentOrigin attributes:dic context:nil];
