如何使用属性字符串设置 minimumfont 大小或 minimumscalfactor(ios7)。
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineBreakMode = self.lineBreakMode;
paragraphStyle.alignment = self.textAlignment;
NSDictionary *dictionary = @{ NSFontAttributeName: self.font,
NSParagraphStyleAttributeName: paragraphStyle,
NSForegroundColorAttributeName:self.textColor};
[self.formattedText drawAtPoint:vLineRect.origin withAttributes:dictionary];
请建议我如何在属性字符串中设置最小字体大小?