iphone - 如何使用 Storyboard？

Question

我正在尝试使用 Storyboard segue 而不是 didSelectRowAtIndex。

这就是我所拥有的，但此方法无法识别indexPath.row。我可以用其他方法来做同样的事情吗？

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{
    SpecificExerciseTableViewController *upcomingViewController = segue.destinationViewController;
    if ([segue.identifier isEqualToString:@"Web"]) 
    {
        upcomingViewController.exerciseArray = [[self.muscleArray objectAtIndex:indexPath.row]objectForKey:@"exercises"];
        upcomingViewController.muscleName = [[self.muscleArray objectAtIndex:indexPath.row]objectForKey:@"muscleName"];
    }
}

Answer 1

除非您将该 indexPath 作为 ivar，否则范围内不存在此类变量。

如果您想获取 UITableView 中所选行的索引路径，请使用:

- (NSIndexPath *)indexPathForSelectedRow

上面调整后的代码:

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];

    SpecificExerciseTableViewController *upcomingViewController = segue.destinationViewController;
    if ([segue.identifier isEqualToString:@"Web"]) 
    {
        upcomingViewController.exerciseArray = [[self.muscleArray objectAtIndex:indexPath.row]objectForKey:@"exercises"];
        upcomingViewController.muscleName = [[self.muscleArray objectAtIndex:indexPath.row]objectForKey:@"muscleName"];
    }
}