Question

如何让xib中的label能够根据内容自定义高度

Answer 1

-(CGFloat)heightForString:(NSString*)stringfontSize:(float)fontSizeandWidth:(float)width{if(string==nil){return0;}floatdev=[[[UIDevicecurrentDevice]systemVersion]floatValue];if(dev>=7.0){if((NSNull*)string==[NSNullnull]){return0;}if(string!=nil&&string.length>1){UIFont*tfont=[UIFontsystemFontOfSize:fontSize];CGSizesize=CGSizeMake(width,CGFLOAT_MAX);NSDictionary*tdic=[NSDictionarydictionaryWithObjectsAndKeys:tfont,NSFontAttributeName,nil];CGSizeactualsize=[stringboundingRectWithSize:sizeoptions:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeadingattributes:tdiccontext:nil].size;returnactualsize.height;}return0;}else{if(string!=nil&&string.length>1){CGSizesizeToFit=[stringsizeWithFont:[UIFontsystemFontOfSize:fontSize]constrainedToSize:CGSizeMake(width,CGFLOAT_MAX)lineBreakMode:NSLineBreakByWordWrapping];//此处的换行类型（lineBreakMode）可根据自己的实际情况进行设置returnsizeToFit.height;}return0;}}上面的代码就可以。还需设置下label的numberofline=0breakMode以及重新设置label.frame如果在tableview上要重新设置cell的高度.