自适应宽度和高度

/*===================返回字符串的自适应宽度width=======================*/

-(CGFloat)getWidthString:(NSString *)string  systemFontSize:(CGFloat)fontSize

{

return [string boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, fontSize) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:fontSize]} context:NULL].size.width;

}

/*==================返回字符串的自适应高度height=====================*/

-(CGFloat)getHeightString:(NSString *)string systemFontSize:(CGFloat)fontSize width:(CGFloat) width

{

return [string boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:fontSize]} context:NULL].size.height;

}