从UICollectionViewCell呈现UIPopoverController

Question

我想从UICollectionViewCell上的按钮呈现UIPopoverController.

到目前为止,一切都已创建好,但弹出窗口不可见.

这有什么特别的方法吗？

如果我从集合视图单元格以外的任何其他位置显示代码,则代码可以工作.

以下代码位于UICollectionViewCell子类中.

if (_infoPopover == nil) {
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    GameInfoViewController *gameInfoVC = (GameInfoViewController *)[storyboard instantiateViewControllerWithIdentifier:@"GameInfoViewController_ID"];

    UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:gameInfoVC];
    _infoPopover = popover;
    [gameInfoVC setGameNameString:_gameNameLabel.attributedText];
}

[_infoPopover presentPopoverFromRect:_infoButton.frame inView:self permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

谢谢!

Answer 1

从UIViewController执行PopOver,而不是在UICollectionViewCell中执行.所以,使用委托来控制.

//Cell.m
-(void)popOVerClick:(UIButton *)button{
    [[self delegate] didPopOverClickInCell:self];
}

实施协议

//ViewController
    -(void)didPopOverClickInCell:(MyCell *)cell{
    if ([self.flipsidePopoverController isPopoverVisible]) {
        [self.flipsidePopoverController dismissPopoverAnimated:YES];
    } else {

        FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideViewController" bundle:nil];
        controller.label.text = cell.title;
        controller.delegate = self;

        self.flipsidePopoverController = [[UIPopoverController alloc] initWithContentViewController:controller];
        [self.flipsidePopoverController presentPopoverFromRect:cell.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    }
}

和你的代码:https://github.com/lequysang/TestPopOver