关于“声明仅在档案范围有效” [英] About "Declaration is only valid at file scope"
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问题描述
任何人都可以帮我修复吗?
class ListViewController:UIViewController,AddItemViewControllerDelegate {...}
扩展名ListViewController:UITableViewDataSource {
func tableView(tableView:UITableView,didSelectRowAtIndexPath indexPath:NSIndexPath){
tableView.deselectRowAtIndexPath(indexPath,animated:true)
performSegueWithIdentifier(ShowDetail,sender:indexPath)
}
}
解决方案
错误在您的 ...
- 该错误意味着您的 ListViewController
类没有关闭,所以扩展名被解释为内嵌嵌套,如下所示:
class ListViewController {
...
extension ListViewController {
}
}
找到缺少的大括号,你应该解决问题。
I have a class+extension swift file. After adding a delegate that I declared in another file to the class, the Xcode shows "Declaration is only valid at file scope" at the extension line. I don't know what the problem is.
Can anyone help me to fix it?
class ListViewController: UIViewController, AddItemViewControllerDelegate {...}
extension ListViewController: UITableViewDataSource{
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
tableView.deselectRowAtIndexPath(indexPath, animated: true)
performSegueWithIdentifier("ShowDetail", sender: indexPath)
}
}
解决方案
The error is somewhere in your ...
— that error means that your ListViewController
class didn't get closed, so the extension is being interpreted as nested inside, like this:
class ListViewController {
...
extension ListViewController {
}
}
Find the missing closing brace and you should solve the problem.
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