代码之家 › 专栏 › 技术社区 › MGames

如何在Swift中删除UIMenuController默认项

uimenuitem uimenucontroller swift ios

0

MGames · 技术社区 · 7 年前

我正在尝试删除这些项目查阅共有

override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        // add two custom menu items to the context menu of UIWebView (assuming in contenteditable mode)


        let menuItem1 = UIMenuItem(title: "My Button", action: #selector(myButtonSel))
        UIMenuController.shared.menuItems = [menuItem1]

    }

以下是我的简历:

  override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {

        //let shareSelector: Selector = NSSelectorFromString("_share:")

        if webView?.superview != nil {
            if action == #selector(myButtonSel){
                return true
            }
        }

        return super.canPerformAction(action, withSender: sender)
    }

override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {

    //let shareSelector: Selector = NSSelectorFromString("_share:")

    if webView?.superview != nil {
        if action == #selector(myButtonSel){
            return true
        }
        else {

            return false
        }
    }

    return super.canPerformAction(action, withSender: sender)
}

即使当我试图删除所有其他项目,并保持我的习惯,我不能这样做。我所能做的就是添加我的自定义项。

2 回复 | 直到 7 年前

1

2

Umar Farooque 7 年前

我尝试了这个方法,但它通过将WebView子类化并重写 canPerformAction

override func canPerformAction(_ action: Selector, withSender sender: AnyObject?) -> Bool {
    if action == #selector(cut(_:)) {
      return false
    }
    if action == #selector(paste(_:)) {
      return false
    }
    if action == #selector(select(_:)) {
      return false
    }
    if action == #selector(selectAll(_:)) {
      return false
    }
    ...

    return super.canPerformAction(action, withSender: sender)
  }

我提到 this 答复人这对我很有效。试试看。

2

0

prateek sekhri 2 年前

UIResponderStandardEditActions ! 要删除默认项,请确保为功能创建UITextField或UITextView的子类,否则在UiViewController类中它将不起作用。

#import "CustomTextField.h"

@implementation CustomTextField



- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
if (action == @selector(captureTextFromCamera:) ||
    action == @selector(delete:) ||
    action == @selector(cut:) ||
    [NSStringFromSelector(action)  isEqualToString:@"_promptForReplace:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_transliterateChinese:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_insertDrawing:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_lookup:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_define:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_translate:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_addShortcut:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_accessibilitySpeak:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_accessibilitySpeakLanguageSelection:"] ||
    [NSStringFromSelector(action) isEqualToString:@"_share:"] )
{
    return  false;
}
NSLog(@"OPtion :- %@",NSStringFromSelector(action));

return [super canPerformAction:action withSender:sender];
}


@end

默认可用选项位于要禁用的选项下方。

cut:
copy:
paste:
delete:
_promptForReplace:
_transliterateChinese:
_insertDrawing:
captureTextFromCamera:
_showTextStyleOptions:
_lookup:
_define:
_translate:
_addShortcut:
_accessibilitySpeak:
_accessibilitySpeakLanguageSelection:
_accessibilityPauseSpeaking:
_share:
makeTextWritingDirectionRightToLeft:
makeTextWritingDirectionLeftToRight: