IOS 如何将数组转至另一个 View Controller

Question

我有一个初始 View Controller (A) 和一个导航 Controller 链接到另一个 View Controller (B)。我如何通过 segue 将数组从 A 传递到 Big？

这是我的转场代码。

  -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSLog(@"prepareForSegue: %@", segue.identifier);

    if ([segue.identifier isEqualToString:@"severityInfo"]) {
        UINavigationController *segueNavigation = [segue destinationViewController];
        NSLog(@"%@",[[segueNavigation viewControllers]objectAtIndex:0]);
        IncidentOverviewViewController *B = (IncidentOverviewViewController *)[[segueNavigation viewControllers]objectAtIndex:0];
        B.BArray = feeds;
    }
}

运行此代码后出现此错误:原因:'-reason:'无法找到 segue 'severityInfo' 的导航 Controller 。只有当源 Controller 由 UINavigationController 的实例管理时，才能使用推送转场。'

我已经在我的第二个 View Controller (事件 View Controller )中声明了这个方法，它看起来像这样:

-(void)setFeeds:(NSMutableArray*)received
{
    BArray = received;

    NSLog(@"feeds are%@", BArray);

}

我已经从我的初始 View Controller 调用“ View Controller ”在 Storyboard 中插入标识符，这个初始 View Controller 连接到导航 View Controller ，然后从导航 View Controller 连接到我的目标 View Controller 调用“incidentOverviewViewController” "

Answer 1

这是怎么做的

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSLog(@"prepareForSegue: %@", segue.identifier);

    if ([segue.identifier isEqualToString:@"severityInfo"]) {
        UINavigationController *segueNavigation = [segue destinationViewController];
        ViewController *B = (ViewController *)[segueNavigation topViewController];
        [B setBArray:feeds];

    }
}