UIView動畫

Question

我需要水平翻轉視圖。

當我這樣做時，我嘗試與導航控制器一起翻轉，背景屏幕變黑

如何避免這種情況？

我嘗試了這段代碼。

HomeViewController *homeVC = [[HomeViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:homeVC];
nav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
nav.modalPresentationStyle = UIModalPresentationFormSheet;
[[self navigationController] presentViewController:nav animated:YES completion:^{
    [Constants showHomeScreenOnViewController:self];
}];

Answer 1

請嘗試以下代碼：-

UIViewController *controller = [[[MyViewController alloc] init] autorelease];
UIViewAnimationTransition trans = UIViewAnimationTransitionCurlUp;
[UIView beginAnimations: nil context: nil];
[UIView setAnimationTransition: trans forView: [self window] cache: YES];
[navController presentModalViewController: controller animated: NO];
[UIView commitAnimations];

Answer 2

您可以通過以下代碼更改演示樣式來避免黑屏，

用這個，

 nav.modalPresentationStyle = UIModalPresentationOverFullScreen;

要么

 nav.modalPresentationStyle = UIModalPresentationOverCurrentContext;

希望這會幫助你。