目标需要更改为self
,这在这个Apple 示例中显示,它是为打印项目完成的,但可以像我在评论后所做的那样轻松更改为切换拆分项目。
/** This is an optional delegate function, called when a new item is about to be added to the toolbar.
This is a good spot to set up initial state information for toolbar items, particularly items
that you don't directly control yourself (like with NSToolbarPrintItemIdentifier).
The notification's object is the toolbar, and the "item" key in the userInfo is the toolbar item
being added.
*/
func toolbarWillAddItem(_ notification: Notification) {
let userInfo = notification.userInfo!
if let addedItem = userInfo["item"] as? NSToolbarItem {
let itemIdentifier = addedItem.itemIdentifier
if itemIdentifier == .print {
addedItem.toolTip = NSLocalizedString("print string", comment: "")
addedItem.target = self
}
// added code
else if itemIdentifier == .toggleSidebar {
addedItem.target = self
}
}
}
然后通过添加等效的 Swift 将动作添加到场景委托中:
- (IBAction)toggleSidebar:(id)sender{
UISplitViewController *splitViewController = (UISplitViewController *)self.window.rootViewController;
[UIView animateWithDuration:0.2 animations:^{
splitViewController.preferredDisplayMode = (splitViewController.preferredDisplayMode != UISplitViewControllerDisplayModePrimaryHidden ? UISplitViewControllerDisplayModePrimaryHidden : UISplitViewControllerDisplayModeAllVisible);
}];
}