dismissModalViewControllerAnimated并不总是有效？

Question

什么阻止模态视图控制器被解雇？我发现dismissModalViewControllerAnimated并不总是有用吗？例如,这不起作用:

SettingsViewController* settings = [[SettingsViewController alloc] init];
UINavigationController *settingsNav = [[UINavigationController alloc] initWithRootViewController:settings];
[navigationController presentModalViewController:settingsNav animated:YES];     
[navigationController dismissModalViewControllerAnimated:YES];

谢谢!

Answer 1

如果您尝试将太多导航动画放得太近,它们通常无法正常工作.尝试做你的dismissModalViewControllerAnimated:延迟0.75秒后.