- (CGFloat)fd_heightForHeaderFooterViewWithIdentifier:(NSString *)identifier configuration:(void (^)(id))configuration;

[zj381652512]

• (CGFloat)fd_heightForHeaderFooterViewWithIdentifier:(NSString )identifier configuration:(void (^)(id))configuration { UITableViewHeaderFooterView templateHeaderFooterView = [self fd_templateHeaderFooterViewForReuseIdentifier:identifier];

  if_ (configuration) {

  configuration(templateHeaderFooterView);

  }

  NSLayoutConstraint *widthFenceConstraint = [NSLayoutConstraint constraintWithItem:templateHeaderFooterView attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:CGRectGetWidth(self.frame)]; [templateHeaderFooterView addConstraint:widthFenceConstraint]; CGFloat fittingHeight = [templateHeaderFooterView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height; [templateHeaderFooterView removeConstraint:widthFenceConstraint];

  if (fittingHeight == 0) { fittingHeight = [templateHeaderFooterView sizeThatFits:CGSizeMake(CGRectGetWidth(self.frame), 0)].height; } return fittingHeight; }

[zj381652512]

大佬,用您的库v1.6做仿好友圈,发现计算高度完全不正确,一看没有执行block, header没有被撑起来

[zj381652512]

如果是xib的cell,会因为从xib生成cell时有默认宽度,会导致计算高度错误,故:

• (void)awakeFromNib { [super awakeFromNib]; self.width = kScreenW; // 避免计算cell高度不准 }