如果模态ViewController演示文稿样式是UIModalPresentationFormSheet，则iPad键盘不会被忽略 [英] iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationFormSheet

问题描述

注意：

从iOS 4.3开始，请参阅已接受的答案（不是最受欢迎的答案）。

See accepted answer (not top voted one) for solution as of iOS 4.3.

此问题是关于在iPad键盘中发现的行为，如果在带有导航控制器的模态对话框中显示，则拒绝解除该行为。

This question is about a behavior discovered in the iPad keyboard, where it refuses to be dismissed if shown in a modal dialog with a navigation controller.

基本上，如果我使用以下行显示导航控制器，如下所示：

Basically, if I present the navigation controller with the following line as below:

navigationController.modalPresentationStyle = UIModalPresentationFormSheet;

键盘拒绝被解雇。如果我注释掉这一行，键盘就会消失。

The keyboard refuses to be dismissed. If I comment out this line, the keyboard goes away fine.

...

我有两个textFields，用户名和密码; username有一个Next按钮，密码有一个Done按钮。如果我在模态导航控制器中显示它，键盘将不会消失。

I've got two textFields, username and password; username has a Next button and password has a Done button. The keyboard won't go away if I present this in a modal navigation controller.

工作

broken *b = [[broken alloc] initWithNibName:@"broken" bundle:nil];
[self.view addSubview:b.view];

不工作

broken *b = [[broken alloc] initWithNibName:@"broken" bundle:nil];
UINavigationController *navigationController = 
[[UINavigationController alloc]
 initWithRootViewController:b];
navigationController.modalPresentationStyle = UIModalPresentationFormSheet;
navigationController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:navigationController animated:YES];
[navigationController release];
[b release];

如果我删除导航控制器部件并将'b'作为模态视图控制器单独显示，作品。导航控制器是问题吗？

If I remove the navigation controller part and present 'b' as a modal view controller by itself, it works. Is the navigation controller the problem?

工作

broken *b = [[broken alloc] initWithNibName:@"broken" bundle:nil];
b.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:b animated:YES];
[b release];

WORKS

broken *b = [[broken alloc] initWithNibName:@"broken" bundle:nil];
UINavigationController *navigationController = 
    [[UINavigationController alloc]
         initWithRootViewController:b];
[self presentModalViewController:navigationController animated:YES];
[navigationController release];
[b release];

推荐答案

在以模态方式呈现的viewController中，只需覆盖disablesAutomaticKeyboardDismissal to总是返回NO

In the viewController that is presented modally just overwrite disablesAutomaticKeyboardDismissal to always return NO

- (BOOL)disablesAutomaticKeyboardDismissal {
    return NO;
}

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