iOS自动版式：在这种情况下，如何正确计算像元高度？

Question

As you can see in this picture

, the imageView 's size is fixed and I want to have the cell's subviews "exert pressure" and make the content view expand to fit them. Let the intrinsic content size of these subviews drive the height of the table view cell's content view. It's obvious that the cell height depends on the maximum height of messageButton and imageView :

How should I add those constraints?

Answer 1

maybe you can try this:

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 10;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return UITableViewAutomaticDimension;
}

but before that, you should use Auto-layout to add constraints correctly, you don't need think about the imageView and the button height, just add the constraints of distance to the bottom and top. Good luck!

Answer 2

In Swift 3

func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {

        return UITableViewAutomaticDimension

}