UILabel 设置字体行间距

作者Talent•C
转载请注明出处

在iOS开发中经常会用到UIlabel来展示一些文字性的内容，但是默认的文字排版会觉得有些挤，为了更美观也更易于阅读我们可以通过某些方法将UIlabel的行间距和字间距按照需要调节。

- (NSAttributedString *)handleTextWithFont:(UIFont *)font textString:(NSString *)str
{
    NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
    paraStyle.lineBreakMode = NSLineBreakByTruncatingTail;
    paraStyle.alignment = NSTextAlignmentLeft;
    paraStyle.lineSpacing = 9; //设置行间距
    paraStyle.hyphenationFactor = 1.0;
    paraStyle.firstLineHeadIndent = 0.0;
    paraStyle.paragraphSpacingBefore = 0.0;
    paraStyle.headIndent = 0;
    paraStyle.tailIndent = 0;
    //设置字间距 NSKernAttributeName:@1.5f 如果需要可以将此字段加入字典用来设置字间距
    NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle
                          };
    NSAttributedString *attributeStr = [[NSAttributedString alloc] initWithString:str attributes:dic];
    return attributeStr;

}