objective-c 中从 UIApplicationShortcutItem 打开故事板视图控制器的正确实现

Question

这是我尝试从故事板打开视图控制器时获得的代码。我在

上收到错误 "expected identifier"

UINavigationController controller = [(UINavigationController)[[mainStoryboard instantiateViewControllerWithIdentifier: @"ARViewController"];

有人可以帮忙吗。

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

NSLog(@"%@", shortcutItem.type);
if ([shortcutItem.type isEqualToString:@"ADD OWN STRING HERE"]) {

    UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
    UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
    UINavigationController *controller = [(UINavigationController*)[[mainStoryboard instantiateViewControllerWithIdentifier: @"ARViewController"]];
    [navigationController pushViewController:controller animated:YES];

}
}

@end

Answer 1

您的 [ 和 ] 的数量和位置不匹配（两个 [ 太多，一个 ] 太多）。应该是：

UINavigationController *controller = (UINavigationController*)[mainStoryboard instantiateViewControllerWithIdentifier: @"ARViewController"];

objective-c 中从 UIApplicationShortcutItem 打开故事板视图控制器的正确实现

Correct implementation of opening storyboard view controller from UIApplicationShortcutItem in objective-c

xcode

objective-c

ios

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