班级插座的实例未分配

Question

I have a subclass of UITableCell called HistoriqueCell . This class has outlets (4 labels). I have a UIViewController ( HistoriqueViewController ) that has a UITableView . This table has a prototype cell subclassed with HistoriqueCell . That prototype cell's four labels are linked to the outlets of HistoriqueCell.h . However all my instance of those cell always have unallocated outlets. My colleague's version is working perfectly and it's the exact same code (we bypassed git and I simply loaded his copied project from his usb stick just to be 100% sure it wasn't git, even though git assured us there already was no difference).

This makes me suspect that the problem doesn't lie in the code but in a xcode config. I remember I had a similar problem way back that was due to localized storyboard . Simply put, the french version was loaded and had no outlets connected in it, contrary to the english version where I put the outlets. When the french storyboard was used the outlets were unallocated like the problem I have now, but my storyboard is not localized.

Here's the debug showing my unallocated outlets

Here's the storyboard, I also have the @synthesize in the .m

Example of cell usage :

My really really frustrated on the problem, I can't seem the find the issue. Please, if anyone have any leads I'm all ears!

Answer 1

This is expected as nib file isn't loaded automatically.

You should either load the nib file manually by calling [[NSBundle mainBundle] loadNibNamed:@"HistoriqueCell" owner:self options:nil] .

Or preferably register the nib object with the table view as following:

UINib *cellNib = [UINib nibWithNibName:@"HistoriqueCell" bundle:nil];
[self.tableView registerNib:cellNib forCellReuseIdentifier:@"HistoriqueCell"];

And now, when you call dequeueReusableCellWithIdentifier: the table view will either return a reusable cell, or create a new instance of the cell and load the nib for you. And this check won't be needed anymore:

if (cell == nil) {
    ...
}

Answer 2

也许您在代码中将“单元格”设置为类似于标识ID，但在Interface Builder中未设置单元格