我們如果想要點選按鈕跳轉到相應的介面的話我們可以這麼做，舉個例子，就拿UITabBarController來說事，控制器如下所示

比如說我們在前臺的時候，我們可以通過傳送通知就能實現應用程式的跳轉，我們可以傳送以下的通知，然後去拼接UNMutableNotificationContent的userInfo內容，我們可以把下面的程式碼新增到一個UIButton的點選方法中。

 UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init];
  content.title = @"sss";
  content.body = @"哈哈";
  content.badge = @5;
  content.sound = [UNNotificationSound defaultSound];
  //重點是裡面的selectIndex的值 
  content.userInfo = @{@"selectIndex":@(1)};
  UNTimeIntervalNotificationTrigger * trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:5 repeats:NO];
  //包裝成通知請求
   UNNotificationRequest * request = [UNNotificationRequest requestWithIdentifier:@"tongzhi" content:content trigger:trigger];
    
    //通知中心新增這個通知請求
    [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
        
    }];
 

-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler
{

    
     //當然這裡需要去判斷userInfo的值，我這裡就先不去判斷了，準確的話一定要進行判斷的，畢竟通知有很多個
    //在這裡也可以做頁面跳轉
    UITabBarController * vc = (UITabBarController *)self.window.rootViewController;
    
   vc.selectedIndex = [notification.request.content.userInfo[@"selectIndex"]intValue];
    
    //這裡設定沒有提示
    completionHandler(UNNotificationPresentationOptionNone);
}
 

-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response 
withCompletionHandler:(void (^)(void))completionHandler
{
   //這裡也是需要去判斷userInfo的值的，我這裡也省略了
   UITabBarController * vc = (UITabBarController *)self.window.rootViewController;

    vc.selectedIndex = [response.notification.request.content.userInfo[@"selectIndex"]intValue];
    
    completionHandler();

}