自动适配文字高度

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//UILabel文字自适应   - (UILabel *)titleL{ if(_titleL ==nil){          _titleL = [[UILabel alloc] init];         /**设置文字*/         [_titleL setText:self.myMessModel.content];         [_titleL setTextAlignment:NSTextAlignmentLeft];       //文字颜色         [_titleL setTextColor:[self.Skin getCellTitleColor]];           _titleL.numberOfLines = 0; //多行    //设置格式         NSStringDrawingOptions options =  NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading;         [_titleL setFont:[self.Skin getDefaultTextFont]];     //SCREEN_SIZE.width 屏幕的宽度   WJ_HOME_LEFT_RIGHT_GAP间隙  MAXFLOAT 最大高度         CGRect contentRect = [_titleL.text boundingRectWithSize:CGSizeMake(SCREEN_SIZE.width - 2*WJ_HOME_LEFT_RIGHT_GAP, MAXFLOAT) options:options attributes:@{NSFontAttributeName:         [self.Skin getDefaultTextFont]} context:nil];         [_titleL setFrame:CGRectMake(WJ_HOME_LEFT_RIGHT_GAP, CGRectGetMaxY(self.timeL.frame), contentRect.size.width, contentRect.size.height)];   } return _titleL; }   //获取字符串的宽度 -(float) widthForString:(NSString *)value fontSize:(float)fontSize andHeight:(float)height   { //此处的换行类型（lineBreakMode）可根据自己的实际情况进行设置       CGRect sizeToFit = [value boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, height) options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]} context:nil];     return sizeToFit.size.width; } //获得字符串的高度 -(float) heightForString:(NSString *)value fontSize:(float)fontSize andWidth:(float)width {     CGRect sizeToFit = [value boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, width) options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]} context:nil];     return sizeToFit.size.height; }