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];
    }
}

我输入 if（[（NSString *）shortcutItem.localizedTitle isEqualToString：@＆＃34; Store＆＃34;]）循环，我看到代码正在执行。但是PurchaseView.xib永远不会加载。我有推送通知的类似代码，它在我推送视图加载时有效。

任何帮助都将不胜感激。

Answer 1

这里的问题是视图层次结构不好。您已将XIB文件的视图控制器添加到视图层次结构中不存在的全新UINavigationController。我相信你想做这样的事情：

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

同样，上面是一个假设的例子。您需要在视图层次结构中找到正确的UINavigationController。

视图从不加载

1 个答案: