UIMenuController 未显示

Posted 2023-03-12

【中文标题】UIMenuController 未显示

【英文标题】：UIMenuController not getting displayed

【发布时间】：2013-04-17 07:26:00

【问题描述】：

我在长按和双击手势时显示 UIMenuController，但它没有显示。我已经按照这里给出的答案，但它仍然没有出现。 UIMenuController not showing up

下面是我的代码

- (void) doubleTap:(UITapGestureRecognizer *)gesture

    [self becomeFirstResponder]; 

    CGPoint location = [gesture locationInView:[gesture view]];
    UIMenuController *menuController = [UIMenuController sharedMenuController];
    UIMenuItem *resetMenuItem = [[UIMenuItem alloc] initWithTitle:@"DoubleTap" action:@selector(hideKeyboard)];

    [menuController setMenuItems:[NSArray arrayWithObject:resetMenuItem]];
    [menuController setTargetRect:CGRectMake(location.x, location.y, 0.0f, 0.0f) inView:[gesture view]];
    [menuController setMenuVisible:YES animated:YES];


- (void) longPress:(UITapGestureRecognizer *)gesture

    [self becomeFirstResponder]; 

    CGPoint location = [gesture locationInView:[gesture view]];
    UIMenuController *menuController = [UIMenuController sharedMenuController];
    UIMenuItem *resetMenuItem = [[UIMenuItem alloc] initWithTitle:@"LongPress" action:@selector(hideKeyboard)];

    [menuController setMenuItems:[NSArray arrayWithObject:resetMenuItem]];
    [menuController setTargetRect:CGRectMake(location.x, location.y, 0.0f, 0.0f) inView:[gesture view]];
    [menuController setMenuVisible:YES animated:YES];


- (BOOL)becomeFirstResponder

    return YES;


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

    if (action == @selector(copy:))
    
        return YES;
    
    return [super canPerformAction:action withSender:sender];

我正在尝试在 tableView 的 didSelectRow 上获取此事件，可以穿什么。

【参考方案1】：

我终于通过在我的代码中添加以下方法解决了我的问题

- (BOOL) canBecomeFirstResponder 

     return YES; 

您还必须实现所有按钮的操作。否则，该特定按钮将不会显示在菜单中。

【讨论】：

任何以前在 ios6 上工作的菜单在 iOS7 上不工作的人？