ios - UItableview cell 第一个cell上面的距离怎么变小

Question

试了用-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section方法，但是不知为什么并没有什么改变。。还有什么办法吗？或者我上面的方法可能问题出在哪些地方

Answer 1

return 0.001 has no effect?

Answer 2

If you return 0 in this method;

In fact, the default value is still displayed

So you can try return 1; or a smaller number

Answer 3

If I understand correctly, you want to change the distance from the first Cell to the top. You can fill an empty UIView 到 tableHeaderView and then control it through the Frame Height of this View.

UIView *tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 10)];    // 这里 10 就是你想要的高度
tableView.tableHeaderView = tableHeaderView;

Answer 4

If you just want to change the distance from the first cell to the top, the simplest, direct and crude way is to reserve the space you want between the top of your tableView and the top of the parent view (that is, the so-called above the first cell distance), this can

Answer 5

I don’t know what the directory level of your view is. To set the height of the header, you must first have a header.

//swift
// 返回header的高度
override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 5
}
// 在header中添加一个视图
override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let view = UIView()
    view.backgroundColor = UIColor.redColor()
    return view
}