ios - 查看从不加载

Question

- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler {

    MainView *Main=[[MainView alloc]initWithNibName:@"MainView" bundle:nil];
    // This module to collect metrics for Notification received, Notification displayed
    UINavigationController *NavBar=[[UINavigationController alloc] initWithRootViewController:Main];

    // react to shortcut item selections
    NSLog(@"A shortcut item was pressed. It was %@.", shortcutItem.localizedTitle);
    if([(NSString *)shortcutItem.localizedTitle isEqualToString:@"Store"])
    {
        PurchaseView *purchaseViewController = [[PurchaseView alloc] initWithNibName:@"PurchaseView" bundle:nil];
        [NavBar pushViewController:purchaseViewController animated:YES];
    }
}

我进入 if([(NSString *)shortcutItem.localizedTitle isEqualToString:@"Store"]) 循环，我看到代码正在执行。但 PurchaseView.xib 永远不会加载。我有类似的推送通知代码，它在我推送要加载的 View 时有效。

如有任何帮助，我们将不胜感激。

Answer 1

这里的问题是糟糕的 View 层次结构。您将 XIB 文件的 View Controller 添加到一个全新的 UINavigationController，它在 View 层次结构中的任何位置都不存在。我相信你想做这样的事情:

UINavigationController *navBar = (UINavigationController *) self.tabBarController.selectedViewController;
[navBar pushViewController:purchaseViewController animated:YES];

同样，以上是一个假设的例子。您需要在 View 层次结构中找到正确的 UINavigationController。