视图控制器中的两个表视图：Swift

Question

I have a UITableView with prototype cells that essentially takes up the whole page. I have a UIButton on the very bottom that should display a pop-up static UITableView when tapped. I'm struggling to account for the pop-up table view in cellForRowAtIndexPath .

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

        let result: UITableViewCell

        if tableView == self.tableView {

            var cell = self.tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! UITableViewCell

            cell.textLabel!.text = array[indexPath.row]

            result = cell

        } else if tableView == self.popUpTableView {

            var popUpCell = self.popUpTableView.dequeueReusableCellWithIdentifier("popUpCell", forIndexPath: indexPath) as! UITableViewCell

            popUpCell.textLabel!.text = popUpArray[indexPath.row]

            result = popUpCell

        }

        return result
    }

I'm getting an error at return result , where Variable 'result' used before being initialized , but I'm declaring it at the very top. Where am I going wrong with this?

Answer 1

You need to have exhaustive choices. It's possible that result never gets initialized because your checks are "if" and "else if". What happens if tableView is not either "self.tableView" or "self.popUpTableView"?

The simple fix is (if you only plan on having these two) to simply change your "else if" to a simple "else". This way result will always get initialized.