UITableView dividing line

After UITableView adds footerView, the last line of dividing line cannot be displayed

The code is as follows:
rewrite the layoutSubviews method of the cell

- (void)layoutSubviews
{
    [super layoutSubviews];
 
    for (UIView *subview in self.contentView.superview.subviews) {
        if ([NSStringFromClass(subview.class) hasSuffix:@"SeparatorView"]) {
            subview.hidden = NO;
        }
    }
}

Hidden system dividing line

TableView.separatorStyle  = UITableViewCellSeparatorStyleNone;

// 自绘分割线
- (void)drawRect:(CGRect)rect
{
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor);
    CGContextFillRect(context, rect);
    
    CGContextSetStrokeColorWithColor(context, [UIColor colorWithRed:0xE2/255.0f green:0xE2/255.0f blue:0xE2/255.0f alpha:1].CGColor);
    CGContextStrokeRect(context, CGRectMake(0, rect.size.height - 1, rect.size.width, 1));
}

2. Rewrite the setFrame method of cell, height -1, reveal the background color

- (void)setFrame:(CGRect)frame
{
    frame.size.height -= 1;
    // 给cellframe赋值
    [super setFrame:frame];
}

3. To use the system property settings (separatorInset, layoutMargins), you need to add three lines of code:

Set the separatorInset and layoutMargins properties of the tableView

//1.调整(iOS7以上)表格分隔线边距
    if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
        self.tableView.separatorInset = UIEdgeInsetsZero;
    }
    //2.调整(iOS8以上)view边距(或者在cell中设置preservesSuperviewLayoutMargins,二者等效)
    if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
        self.tableView.layoutMargins = UIEdgeInsetsZero;
    }

Setting the LayoutMargins property of the cell

对cell的设置可以写在cellForRowAtIndexPath里,也可以写在willDisplayCell方法里

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *ID = @"cell";
    FSDiscoverSpecialCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    if (cell == nil) {
        cell = [[FSDiscoverSpecialCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ID];
    }

   //2.调整(iOS8以上)tableView边距(与上面第2步等效,二选一即可)
    if ([cell respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) {
        cell.preservesSuperviewLayoutMargins = NO;
    }
   //3.调整(iOS8以上)view边距
    if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
        [cell setLayoutMargins:UIEdgeInsetsZero];
    }
    return cell;
}