添加自定义视图到popover的uibarbuttonitem

Question

在阅读了apple的示例:MultipleDetailViews演示如何使用UIPopOverController两个详细视图控制器之后,我无法弄清楚如何将自定义视图添加到委托方法中barButtonItem存在的视图splitViewController:

-(void)splitViewController:(UISplitViewController*)svc willHideViewController: (UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem*)barButtonItem forPopoverController:(UIPopoverController*)pc {

    self.popoverController = pc;
    barButtonItem.text = @"root view controller";
    self.rootPopoverButtonItem = barButtonItem;

    UIViewController <SubstitutableDetailViewController> *detailViewController = [mySplitViewController.viewControllers objectAtIndex:0];
    [detailViewController showRootPopoverButtonItem:self.rootPopoverButtonItem];
}

弹出按钮与其默认形状配合良好,但当我尝试这样的事情时:

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *customImage = [UIImage imageNamed:@"popOver.png"];
[button setBackgroundImage: [UIImage imageNamed:@"popOver.png"] forState:UIControlStateNormal];
button.frame= CGRectMake(0.0, 0.0, customImage.size.width, customImage.size.height);
[button addTarget:self action:@selector(???) forControlEvents:UIControlEventTouchUpInside];
barButtonItem.customView = button;

我不知道这个按钮的选择器会使弹出窗口正确显示,我的弹出窗口很好,没有使用委托方法UISplitViewController的选择器,所以我应该放在什么样的选择器？

Answer 1

为什么要在条形按钮项目中添加按钮而不是图像视图？使用图像视图(或禁用按钮上的用户交互)将使应用程序使用条形按钮项目选择器和目标.

如果您仍想使用单独的按钮,那么您可以做的是:

[button addTarget:barButtonItem.target action:barButtonItem.action forControlEvents:UIControlEventTouchUpInside];

这将复制默认的栏按钮项目目标和操作.