这可能是一个显而易见的问题,但我无法弄清楚这个问题的正确解决方案。我有一个自定义segue类,它的工作原理是它成功转换到目标控制器。在目标控制器中,我需要获取一些子视图的位置并保存它们以供以后使用。我在ViewDidAppear中这样做。此代码在使用标准segue时有效,但在使用我的自定义segue时,该位置解析为{0,0}。但是,我能够对子视图做其他事情,比如绘制边框。
目的地视图代码:
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
for (UIView * view in self.videos) {
[self.origCenter setObject:[NSValue valueWithCGPoint:[view.superview convertPoint:view.center toView:view.superview]]
forKey:[NSValue valueWithNonretainedObject:view]];
view.layer.borderColor = [UIColor redColor].CGColor;
view.layer.borderWidth = 3.0f;
}
}
自定义代码:
-(void)perform {
UIViewController *sourceViewController = (UIViewController*)[self sourceViewController];
UIViewController *destinationController = (UIViewController*)[self destinationViewController];
[sourceViewController.view addSubview:destinationController.view];
CATransition* transition = [CATransition animation];
transition.duration = .25;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromRight;
[sourceViewController.navigationController.view.layer addAnimation:transition forKey:kCATransition];
[[self sourceViewController] presentModalViewController:[self destinationViewController] animated:NO];
}