NSString 计算显示范围

最新推荐文章于 2025-11-10 10:14:34 发布

原创最新推荐文章于 2025-11-10 10:14:34 发布 · 553 阅读

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#iOS

/**
 *  计算文本显示size
 *
 *  @param width   宽度
 *  @param font    字体
 *
 *  @return 显示size
 */
- (CGSize)calcTextDisplaySizeWithWidth:(CGFloat)width font:(UIFont *)font
{
    CGSize size = CGSizeZero;
    
    CGSize temp = CGSizeMake(width, 2000);
    NSStringDrawingOptions opt = NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading;
    NSDictionary *dic = @{NSFontAttributeName: font};
    
    if (IOS6)
    {
//        size = [self sizeWithFont:font forWidth:width lineBreakMode:NSLineBreakByWordWrapping];
        size = [self sizeWithFont:font constrainedToSize:CGSizeMake(width, 2000)];
    }
    else
    {
        size = [self boundingRectWithSize:temp options:opt attributes:dic context:nil].size;
    }
    
    return size;
}