iOS开发 根据字符内容计算宽高度

根据内容计算宽度

- (CGFloat)calculateRowWidth:(NSString *)string {

    NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize:17]};  //指定字号

    CGRect rect = [string boundingRectWithSize:CGSizeMake(0, 30)/*计算宽度时要确定高度*/ options:NSStringDrawingUsesLineFragmentOrigin |

                  NSStringDrawingUsesFontLeading attributes:dic context:nil];

    return rect.size.width;

}

根据内容计算高度

- (CGFloat)calculateRowHeight:(NSString *)string fontSize:(NSInteger)fontSize{

    NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]};//指定字号

    CGRect rect = [string boundingRectWithSize:CGSizeMake(self.view.width - 30, 0)/*计算高度要先指定宽度*/ options:NSStringDrawingUsesLineFragmentOrigin |

                  NSStringDrawingUsesFontLeading attributes:dic context:nil];

    return rect.size.height;

}

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作者：cocoawork丶

来源：CSDN

原文：https://blog.csdn.net/u010170540/article/details/51916511

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