UITableView cell间距

- (void)setFrame:(CGRect)frame{    CGFloat CellMargin = 10;    CGRect cellFrame = frame;    cellFrame.size.height = cellFrame.size.height - CellMargin;//    cellFrame.origin.y = cellFrame.origin.y + CellMargin;    cellFrame.size.width = cellFrame.size.width - CellMargin * 2;    cellFrame.origin.x = cellFrame.origin.x + CellMargin;    frame = cellFrame;    [super setFrame:frame];}