Tableview行根据选择调整大小

Question

I have setup a tableview to use self-sizing cells (in fact I didn't have to do anything more than use auto layout - it seems that UITableViewAutomaticDimension is the default rowHeight).

The cells are sized correctly:

However, when I push another controller on to the stack, the cells immediately resize just before the transition animation:

They remain at the incorrect size when I pop back to the table view controller. I can partially resolve this part by reloading on viewWillAppear to recalculate the correct heights, but then I lose some other animations and selection state.

Is this an iOS bug? How might I work around it?

Here is a sample project that demonstrates the same.

Answer 1

You need to set estimatedRowHeight:

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.tableView registerClass:[Cell class] forCellReuseIdentifier:@"Cell"];
    self.tableView.rowHeight = UITableViewAutomaticDimension;
    self.tableView.estimatedRowHeight = 80;
}