多次按下按钮会加载多个页面(Android)

时间:2017-02-20 19:18:41

标签: xamarin navigation xamarin.forms

我想解决这个问题,当我多次按下按钮时 - 提供了许多相同的页面。我在这里找到了这样的代码。

var stack = Navigation.NavigationStack;
if (stack[stack.Count - 1].GetType() != typeof(DetailsPage))
await Navigation.PushAsync (new DetailsPage ());

Navigation.NavigationStack - 工作正常。 Navigation.ModalStack - 不t work. But I can获取名称。

请帮我解决这个问题。

1 个答案:

答案 0 :(得分:6)

在这个常见问题上有各种各样的主题,我可以在论坛上看到你已经评论过它,还有NavigationExtensions类:

public static class NavigationExtensions
{
    public static async Task PushModalAsyncSingle(this INavigation nav, Page page, bool animated = false)
    {
        if (App.Navigation.ModalStack.Count == 0 || 
            App.Navigation.ModalStack.Last().GetType() != page.GetType())
        {
            await nav.PushModalAsync(page, animated);
        }
    }

    public static async Task PushAsyncSingle(this INavigation nav, Page page, bool animated = false)
    {
        if (App.Navigation.NavigationStack.Count == 0 ||
            App.Navigation.NavigationStack.Last().GetType() != page.GetType())
        {
            await nav.PushAsync(page, animated);
        }
    }
}

以下是讨论: https://forums.xamarin.com/discussion/29787/double-tapping-in-xamarin-forms-on-android