Question

我正在使用UITableViewController。如果我长按tableview cell，我将在UIMenuController中创建自定义菜单并且工作正常（转发，回复）。在同一视图中，我在底部有textview。如果我点击它应该显示正常的动作，但它不会。它附带默认项目以及我为tableview cell添加的项目（转发，回复）。如何从UIMenuController中删除自定义项目或如何为特定单元格执行操作。

在单元格内我有一个UIImageView。我添加了手势来执行操作。

Answer 1

为此，首先要创建一个包含自定义项目的菜单，然后收听UIMenuControllerWillHideMenuNotification通知。在菜单即将隐藏的此通知中，您可以删除添加的项目。这是示例代码。

-(void) showMenu{
     UIMenuController * menuController =[UIMenuController sharedMenuController];
     UIMenuItem * item1 = [[UIMenuItem alloc] initWithTitle:@"Goto" action:@selector(menuItem1Clicked:)];
     UIMenuItem * item2 = [[UIMenuItem alloc] initWithTitle:@"Edit" action:@selector(menuItem2Clicked:)];
     [menuController setMenuItems:@[item, item1]];
     [menuController setTargetRect:rect inView:self.view];
     [menuController setMenuVisible:YES animated:YES];
}

当菜单要隐藏时删除您添加的项目

-(void) menuControllerWillHide:(NSNotification*)notification
{
     UIMenuController * controller = [UIMenuController sharedMenuController];
     NSArray * items = [controller menuItems]; // These are all custom items you added
     NSMutableArray * finalItemsYouWant = [NSMutableArray array];
     // Here you can check what items you dont want and then remove it
     [controller setMenuItems:finalItemsYouWant];
}

Answer 2

您应该已实施canPerformAction:withSender:以使自定义项生效。在该方法中，您可以验证发件人以检查它是什么类/实例并决定要做什么。

或者，检查哪个实例是第一个响应者。

Answer 3

Swift3：在ViewController的viewDidLoad中：

 NotificationCenter.default.addObserver(self, selector: #selector(menuControllerWillHide), name: NSNotification.Name.UIMenuControllerWillHideMenu, object: nil)

func menuControllerWillHide(notification:NSNotification){
    UIMenuController.shared.menuItems = []
}

Answer 4

-(void)showMenu:(UILongPressGestureRecognizer *)longPressRecognizer  
{  
    longPressRowNum = longPressRecognizer.view.tag;  
    NSIndexPath *indPath = [NSIndexPath indexPathForRow:longPressRecognizer.view.tag inSection:0];
    //Type cast it to CustomCell   
    UITableViewCell *cell = (UITableViewCell*)[projectTable cellForRowAtIndexPath:indPath];        
    ProjectDashBoard *projectDashBoard = [listRecord objectAtIndex:longPressRecognizer.view.tag];
    NSLog(@"long press project status---%@",projectDashBoard.projectStatus);

    if (longPressRecognizer.state == UIGestureRecognizerStateBegan) {



    UITableViewCell *selectedCell = (UITableViewCell *)longPressRecognizer.view;
    [selectedCell setSelected:YES];

    UIMenuItem *delete = [[UIMenuItem alloc] initWithTitle:NSLocalizedString(@"deleteproject", nil)  action:@selector(deleteClicked:)];

    UIMenuController *menu = [UIMenuController sharedMenuController];

    if([projectDashBoard.projectStatus isEqualToString:statusActive]){
        UIMenuItem *archive = [[UIMenuItem alloc] initWithTitle:NSLocalizedString(@"archiveproject", nil)  action:@selector(archiveClicked:)];
        [menu setMenuItems:[NSArray arrayWithObjects:delete, archive, nil]];
    }else{
        UIMenuItem *archive = [[UIMenuItem alloc] initWithTitle:NSLocalizedString(@"unarchiveproject", nil)  action:@selector(archiveClicked:)];
        [menu setMenuItems:[NSArray arrayWithObjects:delete, archive, nil]];
    }

    [[UIMenuController sharedMenuController] update];
    [menu setTargetRect:cell.frame inView:cell.superview];
    [menu setMenuVisible:YES animated:YES];
 }
}

摆脱UIMenuController的自定义菜单项

4 个答案: