Question

我正在尝试使用故事板segue而不是didSelectRowAtIndex。

这就是我所拥有的，但此方法无法识别indexPath.row。有没有其他方法可以用来做同样的事情？

-(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indexPath作为ivar，否则范围内不存在此类变量。

如果您想在UITableView中获取所选行的indexPath，请使用：

- (NSIndexPath *)indexPathForSelectedRow

以上调整后的代码：

-(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"];
    }
}

Answer 2

这个技巧很好，下面是我用它将解析后的元素拉入网页视图的一个例子

.h文件

@property (strong, nonatomic) NSString *url;
@property (strong, nonatomic) UIWebView *webView;

.m文件

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
    if ([segue.identifier isEqualToString:@"WebViewSegue"]) {

        WebViewController *webViewController = segue.destinationViewController;
        webViewController.url = (self.parseResults)[indexPath.row][@"link"];
        webViewController.title = (self.parseResults)[indexPath.row][@"title"];

    }
}

如何使用故事板？

2 个答案: