sizeWithFont:minFontSize:actualFontSize:forWidth:lineBreakMode: iOS7 替代

Question

请帮我找到弃用方法的替代方法...

CGSize size = [title sizeWithFont:buttonFont
                                  minFontSize:10
                               actualFontSize:nil
                                     forWidth:_view.bounds.size.width
                                lineBreakMode:NSLineBreakByClipping];

(boundingRectWithSize:options:attributes:context:) 可以这样做吗？像这样的...

    NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                [UIFont systemFontOfSize:10], NSFontAttributeName,
                                nil];

    CGSize size = [title boundingRectWithSize:CGSizeMake(_view.bounds.size.width-kBorder*2, _view.bounds.size.height)
                                      options:NSLineBreakByClipping
                                   attributes:attributes
                                      context:nil].size;

我说的对吗？ 期待您的建议:)

Answer 1

查看我使用此代码制作的 here 之前的答案：

- (CGSize)text:(NSString *)text sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size
{
    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(7.0))
    {
        NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                                          font, NSFontAttributeName,
                                          nil];

        CGRect frame = [text boundingRectWithSize:size
                                          options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
                                       attributes:attributesDictionary
                                          context:nil];

        return frame.size;
    }
    else
    {
        return [text sizeWithFont:font constrainedToSize:size];
    }
}