UIMenuController未显示 [英] UIMenuController not getting displayed

问题描述

我正在长按和显示UIMenuController;双击手势，但它没有显示。我已经按照这里给出的答案但仍然没有出现。 UIMenuController未显示

I am displaying UIMenuController on long press & double tap gesture, but its not getting displayed. I have followed the answers given here but it still not showing up. UIMenuController not showing up

以下是我的代码

- (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];
}

我试图在tableView的didSelectRow上获取此事件，可以是什么。

I am trying to get this event on didSelectRow of tableView, What can be worng.

推荐答案

我终于通过在我的代码中添加以下方法解决了我的问题

I finally solved my issue by adding below method in my code

- (BOOL) canBecomeFirstResponder 
{
     return YES; 
}

您还必须为所有按钮实施操作。否则，特定按钮不会显示在菜单中。

You must also implement the actions for all the buttons. Else that particular button wont be displayed in the menu.

这篇关于UIMenuController未显示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！