iOS label和cell自适应高度

- (void)setLabelHeight:(UILabel *)label labelText:(NSString *)text font:(UIFont *)font {

NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];

paraStyle.lineBreakMode = NSLineBreakByCharWrapping;

paraStyle.alignment = NSTextAlignmentJustified;

NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@0.0f};

NSAttributedString *attributeStr = [[NSAttributedString alloc] initWithString:text attributes:dic];

label.attributedText = attributeStr;

}

[self setLabelHeight:self.locationLab labelText:self.locationLab.text font:[UIFont systemFontOfSize:12]];

##### 需要自适应高度的label调用上边这方法即可

//返回cell高度

+ (CGFloat)getCellHeightWithString:(NSString *)string {

CGFloat height = [ScanInfoCell initWithSize:CGSizeMake(SCREEN_WIDTH - 30 - 58, CGFLOAT_MAX) string:string font:12].height + 51;

if (!string) {

height += 14.5;

}

return height;

}

//字符串转size

+ (CGSize)initWithSize:(CGSize)size string:(NSString *)string font:(NSInteger)font {

NSDictionary *attribute = @{NSFontAttributeName : [UIFont systemFontOfSize:font]};

CGSize sizes = [string boundingRectWithSize:size options:NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:attribute context:nil].size;

return sizes;

}

####在tableview代理方法中调用下边方法即可达到效果

//返回cell高度

+ (CGFloat)getCellHeightWithString:(NSString *)string;

如下：

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

//设置地址label自适应 cell高度随label高度变化

ScanInfo *scan = self.viewModel.scanHistoryArr[indexPath.section];

return [ScanInfoCell getCellHeightWithString:scan.deviceLocation];

}