iOS11 SectionHeader Solution to the duplicate content when it moves randomly and slides

After upgrading to iOS 11, more painful things have occurred. The code that did not have problems with the previous version was compiled by Xcode 9, and millions of grass and mud horses galloped by;

Today I encountered a strange problem and went straight to the topic:

Question description:

-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
  return 12;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
  UIView* headerSection_V = [[UIView alloc]initWithFrame:CGRectMake(ZERODIS, ZERODIS, SCREEN_WIDTH, 12)];
  [headerSection_V setBackgroundColor:COLOR_3];
  return headerSection_V;
}

1- The headerView will move in a mess, and adjusting the style of the tableView has no effect;

2- When sliding the tableView, it seems that there is another layer tableView at the bottom, repeating the content of the tableViewCell;

3- The following code is invalid: (Of course, when tableVIew is lazy to load, the corresponding code also sets the offset of the cell split line)

/**
  * Solve the cell division line 12 away from both sides and center aligned
  */
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
  if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
    [cell setSeparatorInset:UIEdgeInsetsMake(ZERODIS, 12, ZERODIS, 12)];
  }
  if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
    [cell setLayoutMargins:UIEdgeInsetsMake(ZERODIS, 12, ZERODIS, 12)];
  }
}

The final investigation found:

The old code uses xib but does not use xib's tableView. The tableView is generated by its own code. After deleting xib, it will be OK;

PS: The following is a sample code to share with you the header of the UITableView SectionHeader custom section.

The specific code is as follows:

//Customize the header of the section- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
  UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(10, 0, 300, 30)];//Create a view  UIImageView *headerImageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 0, 300, 30)];
  UIImage *image = [UIImage imageNamed:@""];
  [headerImageView setImage:image];
  [headerView addSubview:headerImageView];
  [headerImageView release];
  NSString *createTime = [ objectAtIndex:section];
  createTime = [createTime stringByReplacingCharactersInRange:NSMakeRange(4, 1) withString:@"-"];
  createTime = [createTime stringByReplacingCharactersInRange:NSMakeRange(7, 1) withString:@"-"];
  UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(130, 5, 150, 20)];
   = [UIColor clearColor];
   = [UIFont boldSystemFontOfSize:15.0];
   = [UIColor blueColor];
   = createTime;
  [headerView addSubview:headerLabel];
  [headerLabel release];
  return headerView;
}

Summarize

The above is the solution to the iOS11 SectionHeader that I introduced to you. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support for my website!