iOS UILabel设置行间距和字间距并计算高度

#define UILABEL_LINE_SPACE6

#define HEIGHT [ [ UIScreen mainScreen ] bounds ].size.height

//给UILabel设置行间距和字间距

-(void)setLabelSpace:(UILabel*)label withValue:(NSString*)str withFont:(UIFont*)font {

NSMutableParagraphStyle*paraStyle = [[NSMutableParagraphStylealloc]init];

paraStyle.lineBreakMode=NSLineBreakByCharWrapping;

paraStyle.alignment=NSTextAlignmentLeft;

paraStyle.lineSpacing=UILABEL_LINE_SPACE; //设置行间距

paraStyle.hyphenationFactor=1.0;

paraStyle.firstLineHeadIndent=0.0;

paraStyle.paragraphSpacingBefore=0.0;

paraStyle.headIndent=0;

paraStyle.tailIndent=0;

NSDictionary*dic =@{NSFontAttributeName:font,NSParagraphStyleAttributeName:paraStyle,NSKernAttributeName:@1.0f

};

NSAttributedString*attributeStr = [[NSAttributedStringalloc]initWithString:strattributes:dic];

label.attributedText= attributeStr;

}

//计算UILabel的高度(带有行间距的情况)

-(CGFloat)getSpaceLabelHeight:(NSString*)str withFont:(UIFont*)font withWidth:(CGFloat)width {

NSMutableParagraphStyle*paraStyle = [[NSMutableParagraphStylealloc]init];

paraStyle.lineBreakMode=NSLineBreakByCharWrapping;

paraStyle.alignment=NSTextAlignmentLeft;

paraStyle.lineSpacing=UILABEL_LINE_SPACE;

paraStyle.hyphenationFactor=1.0;

paraStyle.firstLineHeadIndent=0.0;

paraStyle.paragraphSpacingBefore=0.0;

paraStyle.headIndent=0;

paraStyle.tailIndent=0;

NSDictionary*dic =@{NSFontAttributeName:font,NSParagraphStyleAttributeName:paraStyle,NSKernAttributeName:@1.5f

};

CGSizesize = [strboundingRectWithSize:CGSizeMake(width,HEIGHT)options:NSStringDrawingUsesLineFragmentOriginattributes:diccontext:nil].size;

returnsize.height;

}