ios - 关闭 UIScrollView 中的键盘

Question

好吧，我有几个UITextFieldsandUITextViews在 aUIScrollView中，我想将键盘设置为在scrollview触摸或滚动时消失（当然，除非您在文本字段/视图内触摸时）。

我目前这样做的尝试是用子类替换，并将其设置为在touchesBegan方法UIScrollView内调用 removeKeyboard 函数（在主视图控制器内定义）。但是，这只会在正常触摸时移除键盘，而不是在简单地滚动视图时。那么，什么是移除键盘内部的最佳方法？UIScrollView

在此先感谢您的帮助。

score 143 · Accepted Answer

这是在 iOS 7.0 及更高版本中实现此目的的最简洁方法。

scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;

或者

scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;

在斯威夫特：

scrollView.keyboardDismissMode = .onDrag

或者

scrollView.keyboardDismissMode = .interactive

score 51 · Accepted Answer

有点晚了，但如果其他人正在寻找这个问题的答案，这就是我解决它的方法：

1) 创建一个带有目标回调方法的点击手势识别器，以在所有字段上使用 resignFirstResponder 关闭键盘。

2）将点击手势添加到滚动视图。

这是一个例子：

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];

// prevents the scroll view from swallowing up the touch event of child buttons
tapGesture.cancelsTouchesInView = NO;    

[pageScrollView addGestureRecognizer:tapGesture];

[tapGesture release];

...

// method to hide keyboard when user taps on a scrollview
-(void)hideKeyboard
{
    [myTextFieldInScrollView resignFirstResponder];
}

score 39 · Accepted Answer

虽然本质是一样的，但我更喜欢少一些代码。

在属性检查器中滚动scrollView时将键盘设置为消失：

滚动scrollView时使键盘消失

然后在点击 scrollView 时消失键盘：

将 Tap Gesture Recognizer 拖到您的滚动视图上
动作中只有一行—— scrollView.endEditing(true)。如果你使用的是 Objective-C，[self.scrollView endEditing: YES];

score 10 · Accepted Answer

在斯威夫特：

有点晚了，但如果其他人正在寻找这个问题的答案，这就是我解决它的方法：

1) 创建一个带有目标回调方法的点击手势识别器，以在所有字段上使用 resignFirstResponder 关闭键盘。

2）将点击手势添加到滚动视图。

这是一个例子：

import UIKit

class ViewController: UIViewController {

    @IBOutlet var t1: UITextField!
    @IBOutlet var t2: UITextField!
    @IBOutlet var t3: UITextField!
    @IBOutlet var t4: UITextField!

    @IBOutlet var srcScrollView: UIScrollView!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "hideKeyboard")

        // prevents the scroll view from swallowing up the touch event of child buttons
        tapGesture.cancelsTouchesInView = false

        srcScrollView.addGestureRecognizer(tapGesture)
    }

    func hideKeyboard() {
        t1.resignFirstResponder()
        t2.resignFirstResponder()
        t3.resignFirstResponder()
        t4.resignFirstResponder()
    }
}

score 9 · Accepted Answer

查看 UIScrollView 的keyboardDismissMode属性。

// will hide keyboard when your text field is about to go beyond the keyboard.
vwScrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;

// will hide keyboard instantly once the scroll view started scrolling by user.
vwScrollView.keyboardDismissMode = UIScrollViewKeyboardDismissOnDrag;

// If you need to hide keyboard on tap of scroll view,consider adding a tap gesture or sub class and override touchesbegan: method.

斯威夫特版本

vwScrollView.keyboardDismissMode = .interactive
vwScrollView.keyboardDismissMode = .onDrag

score 4 · Accepted Answer

4

尝试这个

[self.selectedViewController.view endEditing:YES];

于 2013-07-22T11:02:04.740 回答

score 4 · Accepted Answer

创建一个扩展类以在任何地方触摸滚动视图/视图时隐藏键盘

extension UIViewController {
  func hideKeyboardWhenTappedAround() {
    let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
    tap.cancelsTouchesInView = false
    view.addGestureRecognizer(tap)
  }
    
  @objc func dismissKeyboard() {
    view.endEditing(true)
  }
}

并在 viewDidLoad 中调用此方法，如

override func viewDidLoad() {
  super.viewDidLoad()
  self.hideKeyboardWhenTappedAround()    
}

score 3 · Accepted Answer

有点晚了，但如果其他人正在用Swift 3搜索这个问题的答案：

func scrollViewDidScroll(_ scrollView: UIScrollView) {
    view.endEditing(true)
}

score 2 · Accepted Answer

当我将手势添加到的子类时UIScrollView，我遇到了视图树中的各种手势相互干扰的问题，例如能够单击子视图、滚动视图以及在所有情况下都关闭键盘。我想出了这个解决方案，它可以从超类UIScrollView或UIViewController.

该类DismissKeyboardTapGesture使用 ARC，适用于视图下的任何文本字段，并且不会接管来自按钮等子视图的任何点击。还利用 iOS7 滚动效果来关闭键盘。

从 UISScrollView 超类设置：

    _dismissKeyboard = [[DismissKeyboardTapGesture alloc] initWithView:self];

或来自 UIViewController：

    _dismissKeyboard = [[DismissKeyboardTapGesture alloc] initWithView:self.view];

这是课程：

@interface DismissKeyboardTapGesture : NSObject <UIGestureRecognizerDelegate>

@end

@implementation DismissKeyboardTapGesture

- (id)initWithView:(UIView *)view
{
    self = [super init];
    if (self) {
        UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap:)];
        singleTap.cancelsTouchesInView = NO;
        singleTap.delegate = self;
        [view addGestureRecognizer:singleTap];

        if ([view respondsToSelector:@selector(setKeyboardDismissMode:)]) {
            // Bonus effect to dismiss keyboard by scrolling
            ((UIScrollView *)view).keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
        }
    }
    return self;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    // Don't stop any existing gestures in our view from working
    if (otherGestureRecognizer.view == gestureRecognizer.view) {
        return YES;
    }
    return NO;
}

- (void)singleTap:(UIGestureRecognizer*)gestureRecognizer
{
    // Close keyboard for any text edit views that are children of the main view
    [gestureRecognizer.view endEditing:YES];
}

@end

score 1 · Accepted Answer

试试这个滚动视图委托方法 -

链接 IB 中的委托以滚动视图，然后复制此代码（根据您的需要进行修改）。

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{         
//sample code    
    [challengeABallotComponent.voterNameTextField resignFirstResponder];
    [challengeABallotComponent.ballotNumberTextField resignFirstResponder];
    [locationInformation.pollingLocation resignFirstResponder];
}

这应该有效。您也可以尝试其他委托方法

   -(void)scrollViewDidScroll: (UIScrollView *)scrollView 
{
//do your stuff
}

score 1 · Accepted Answer

1

scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;

于 2017-10-16T07:23:29.820 回答

score 1 · Accepted Answer

    extension UIView{
    //Set tag via storyboard 
    func keyboardDissmissInteractiveMode(_ tag:Int){
        if let scrollView = self.viewWithTag(tag) as? UIScrollView{
            scrollView.keyboardDismissMode = .interactive
        }
        if let tableview = self.viewWithTag(tag) as? UITableView{
            tableview.keyboardDismissMode = .interactive
        }
    }

    func keyboardDissmissOnDragMode(_ tag:Int){
        if let scrollView = self.viewWithTag(tag) as? UIScrollView{
            scrollView.keyboardDismissMode = .onDrag
        }
        if let tableview = self.viewWithTag(tag) as? UITableView{
            tableview.keyboardDismissMode = .onDrag
        }
    }


    func keyboardDissmissInteractiveMode(_ view:UIView){
        if let scrollView = view as? UIScrollView{
            scrollView.keyboardDismissMode = .interactive
        }
        if let tableview = view as? UITableView{
            tableview.keyboardDismissMode = .interactive
        }
    }

    func keyboardDissmissOnDragMode(_ view:UIView){
        if let scrollView = view as? UIScrollView{
            scrollView.keyboardDismissMode = .onDrag
        }
        if let tableview = view as? UITableView{
            tableview.keyboardDismissMode = .onDrag
        }
    }
}

ios - 关闭 UIScrollView 中的键盘

12 回答 12

斯威夫特版本

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