storyboard - iOS 5 segue实现

Question

在两个 View Controller 之间实现segue时，如何使用segue对象更改目标 View Controller 的属性？该文档说，这可以在prepareForSegue:sender:方法中完成。我尝试过，但没有成功

Answer 1

我不知道您是否仍然需要答案，但这是一个很寂寞的帖子，如果我是正确的话，这不再属于NDA。如果我弄错了，请忽略我的回答，这样我们就可以开始了:我刚刚完成了可以使用您需要的操作。这是对我有用的代码:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"relevantSegueIdentifier"])
    {
        // [segue destinationViewController] is read-only, so in order to
        // write to that view controller you'll have to locally instantiate
        // it here:
        ViewController *upcomingViewController = [segue destinationViewController];
        
        // You now have a solid reference to the upcoming / destination view
        // controller. Example use: Allocate and initialize some property of
        // the destination view controller before you reach it and inject a
        // reference to the current view controller into the upcoming one:
        upcomingViewController.someProperty = [[SomePropertyClass alloc] initWithString:@"Whatever!"];
        upcomingViewController.initialViewController = [segue sourceViewController];
        // Or, equivalent, but more straightforward:
        //upcomingViewController.initialViewController = self;
    }
}

假设someProperty和initialViewController都是目标 View Controller 的综合访问器。希望这可以帮助!