Question

我正在制作一个注册警报视图，其中包含一个UITextField，用户可以在其中输入注册号。一切都是他们的，但我想以编程方式从文本字段中删除复制粘贴功能，因为他们不是文本字段的InterfaceBuilder版本我不知道怎么做...

这是我到目前为止的UIalertview ......

- (void)pleaseRegisterDevice {

    UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Please Register Device!" message:@"this gets covered" delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
    regTextField = [[UITextField alloc] initWithFrame:CGRectMake(12.0, 45.0, 260.0, 25.0)];
    [regTextField setBackgroundColor:[UIColor whiteColor]];
    regTextField.textAlignment = UITextAlignmentCenter;
    [myAlertView addSubview:regTextField];
    [myAlertView show];
    [myAlertView release];

}

Answer 1

这篇文章有许多不错的解决方案：How disable Copy, Cut, Select, Select All in UITextView

我最喜欢的是覆盖canPerformAction:withSender:：

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    if (action == @selector(paste:))
        return NO;
    return [super canPerformAction:action withSender:sender];
}

Answer 2

对于iOS8.0 +，Xcode 6.0.1，启用了ARC

希望像我一样保存一个初学者，一段时间实现这个......

实现禁用复制/粘贴/剪切/等。你必须继承UITextField并覆盖......

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender

要做到这一点......

创建一个新类，它是UITextField的子类（即要包含在app文件夹中的新.h和.m文件）。所以File-＆gt; New-＆gt;“Cocoa Touch Class” - ＆gt; Next-＆gt;“PasteOnlyUITextField”（例如），“UITextField”的子类 - ＆gt; Next-＆gt; Create。

为我们新的UITextField子类创建.h和.m文件，名为“PasteOnlyUITextField”......

PasteOnlyUITextField.h

#import <UIKit/UIKit.h>

@interface PasteOnlyUITextField : UITextField

@end

PasteOnlyUITextField.m

#import "PasteOnlyUITextField.h"

@implementation PasteOnlyUITextField

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    if (action == @selector(paste:))
    {
        return true;
    }

    return false;
}

@end

现在确保将PasteOnlyUITextField.h导入您要使用的地方，例如YourUIViewController.h文件......

#import "PasteOnlyUITextField.h"

现在您必须使用子类，或者使用身份检查器

PasteOnlyUITextField *pasteOnlyUITextField = [[PasteOnlyUITextField alloc] init...];

...或

选择UITextField并转到身份检查器，选择其类。

identity inspector

您可以根据需要更改与菜单选项关联的逻辑...

希望这有帮助！感谢所有原始贡献者。

Answer 3

我找到了一种方法，使用swift使用扩展和没有子类化的associatedObject。我使用readonly属性来禁用粘贴/剪切，但可以调整此样本。

Swift 3 自2016年11月27日起更新

var key: Void?

class UITextFieldAdditions: NSObject {
    var readonly: Bool = false
}

extension UITextField {
    var readonly: Bool {
        get {
           return self.getAdditions().readonly
     } set {
        self.getAdditions().readonly = newValue
    }
}

private func getAdditions() -> UITextFieldAdditions {
    var additions = objc_getAssociatedObject(self, &key) as? UITextFieldAdditions
    if additions == nil {
        additions = UITextFieldAdditions()
        objc_setAssociatedObject(self, &key, additions!, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN)
    }
    return additions!
}

open override func target(forAction action: Selector, withSender sender: Any?) -> Any? {
    if ((action == #selector(UIResponderStandardEditActions.paste(_:)) || (action == #selector(UIResponderStandardEditActions.cut(_:)))) && self.readonly) {
        return nil
    }
    return super.target(forAction: action, withSender: sender)
}

}

其他Swift（2.2）

import UIKit

var key: Void?

class UITextFieldAdditions: NSObject {
    var readonly: Bool = false
}

extension UITextField {
    var readonly: Bool {
        get {
            return self.getAdditions().readonly
        }
        set {
            self.getAdditions().readonly = newValue
        }
    }

    private func getAdditions() -> UITextFieldAdditions {
        var additions = objc_getAssociatedObject(self, &key) as? UITextFieldAdditions
        if additions == nil {
            additions = UITextFieldAdditions()
            objc_setAssociatedObject(self, &key, additions!, objc_AssociationPolicy(OBJC_ASSOCIATION_RETAIN_NONATOMIC))
        }
        return additions!
    }

    public override func targetForAction(action: Selector, withSender sender: AnyObject?) -> AnyObject? {
        if ((action == Selector("paste:") || (action == Selector("cut:"))) && self.readonly) {
            return nil
        }
        return super.targetForAction(action, withSender: sender)
    }

}

Answer 4

Storyboard用户可能希望查看此解决方案，只要您可以使用子类化。

我认为通过扩展或协议可以轻松实现这一目标。

Swift 3.1

import UIKit

@IBDesignable
class CustomTextField: UITextField {

    @IBInspectable var isPasteEnabled: Bool = true

    @IBInspectable var isSelectEnabled: Bool = true

    @IBInspectable var isSelectAllEnabled: Bool = true

    @IBInspectable var isCopyEnabled: Bool = true

    @IBInspectable var isCutEnabled: Bool = true

    @IBInspectable var isDeleteEnabled: Bool = true

    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        switch action {
        case #selector(UIResponderStandardEditActions.paste(_:)) where !isPasteEnabled,
             #selector(UIResponderStandardEditActions.select(_:)) where !isSelectEnabled,
             #selector(UIResponderStandardEditActions.selectAll(_:)) where !isSelectAllEnabled,
             #selector(UIResponderStandardEditActions.copy(_:)) where !isCopyEnabled,
             #selector(UIResponderStandardEditActions.cut(_:)) where !isCutEnabled,
             #selector(UIResponderStandardEditActions.delete(_:)) where !isDeleteEnabled:
            return false
        default:
            //return true : this is not correct
            return super.canPerformAction(action, withSender: sender)
        }
    }
}

Gist link

Answer 5

在ViewController.m中实现此方法此方法将帮助您禁用UITextField上的选项。

它包含对应UITextField上的粘贴，选择，选择所有和复制选项。

当您想要将此密码或UITextField或任何您想要的内容用于DateOfBirth时，此方法非常有用。

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
    if ((_TextField1 isFirstResponder] || [_TextFied2 isFirstResponder]) {
        [[NSOperationQueue mainQueue] addOperationWithBlock:^{
            [[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO];
        }];
    }
    return [super canPerformAction:action withSender:sender];
}

Answer 6

在iOS 9中，我们可以隐藏键盘上的复制粘贴栏

-(void) customMethod{

   yourTextField.inputAssistantItem.leadingBarButtonGroups = @[];
   yourTextField.inputAssistantItem.trailingBarButtonGroups = @[];

}

Answer 7

iOS 10及更早版本（Swift 3）的this answer小更新：

open override func target(forAction action: Selector, withSender sender: Any?) -> Any? {
    guard isReadonly else {
        return super.target(forAction: action, withSender: sender)
    }

    if #available(iOS 10, *) {
        if action == #selector(UIResponderStandardEditActions.paste(_:)) {
            return nil
        }
    } else {
        if action == #selector(paste(_:)) {
            return nil
        }
    }

    return super.target(forAction: action, withSender: sender)
}

Answer 8

如果禁用的文字选择适用于您，请尝试此操作。

class NoMoreSelectionTextField: UITextField {

    override func caretRect(for position: UITextPosition) -> CGRect {
        return CGRect.zero
    }

    override var selectedTextRange: UITextRange? {
        get { return nil }
        set { return }
    }
}

Answer 9

在viewController中尝试

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
        [[NSOperationQueue mainQueue] addOperationWithBlock:^{
            [[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO];
        }];
        return [super canPerformAction:action withSender:sender];
    }

Answer 10

注意：在Swift中，如果您希望您的文本字段禁用所有UIResponderStandardEditActions（剪切，复制，粘贴，查找，共享，选择），请使用UITextFieldDelegate。

func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
    textField.isUserInteractionEnabled = false
    return true
}

func textFieldDidEndEditing(_ textField: UITextField) {
    textField.isUserInteractionEnabled = true
}

Answer 11

Swift 5解决方案：

[items]="customers | async"

Answer 12

你可以在swift中扩展textview或textfield，如下所示：

extension UITextView {    
    open override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
    return false
    }
}

Answer 13

覆盖targetForAction：withSender是最好的恕我直言：

- (id)targetForAction:(SEL)action withSender:(id)sender
{
    if (action == @selector(paste:)) {
        return nil;
    }
    return [super targetForAction:action withSender:sender];
}

Answer 14

Swift 3.0版

class NoMenuTextField: UITextField {
    override func canPerformAction(action: Selector, withSender sender: AnyObject?) -> Bool {
        if (action == #selector(NSObject.paste(_:))) {
            return false
        }
        return super.canPerformAction(action, withSender: sender)
    }
}

Answer 15

用于iOS 7或更高版本

 - (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
    [[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO];
}];
return [super canPerformAction:action withSender:sender];

}

Answer 16

只需设置userInteractionEnabled = NO;

如何以编程方式从UITextField禁用复制粘贴选项

16 个答案:

Swift 3.1