ScrollViewer 在键盘处于活动状态时不向上滚动 [英] ScrollViewer not scroll up while Keyboard is active

问题描述

如何在 Windows Phone 中获取表单的行为，例如联系人 >> 新联系人 >> 姓名.在此页面中，滚动查看器中有许多文本框.当用户点击任何文本框并获得焦点时，页面会向上滚动，标题保持不变并显示 SIP 键盘.这是我的示例，但不起作用

How I can get behavior of form in windows Phone like Contacts >> New contacts >> Name. In this page it have many textboxes in scrollviewer. When user taps on any textbox and its get focus then the page scrolls up and header remains constant and SIP keyboard shown. This is a my example but not it works

https://app.box.com/s/lxxcmxp8ckuottrweg52

为什么?谢谢

推荐答案

我已经修改了上面的代码，如下所示.

I have modified the above code that works fine for as below.

    public double OldHeight;
    private TranslateTransform _translateTransform;

    #region TranslateY dependency property
    public static readonly DependencyProperty TranslateYProperty = DependencyProperty.Register(
        "TranslateYProperty", typeof(double), typeof(Chat), new PropertyMetadata(default(double), PropertyChangedCallback));

    private static void PropertyChangedCallback(DependencyObject o, DependencyPropertyChangedEventArgs e)
    {
        var chat = o as Chat;
   #if DEBUG
        Debug.WriteLine("New value:" + e.NewValue);
        Debug.WriteLine("Old value:" + e.OldValue);
   #endif
        if (chat != null)
        {
            chat.UpdateTopMargin((double)e.NewValue);
        }
    }

    public double TranslateY
    {
        get { return (double)GetValue(TranslateYProperty); }
        set { SetValue(TranslateYProperty, value); }
    }
    #endregion

    private void ChatPage_OnLoaded(object sender, RoutedEventArgs e)
    {
        var transform = ((Application.Current).RootVisual).RenderTransform as TransformGroup;
        if (transform != null)
        {
            _translateTransform = transform.Children.OfType<TranslateTransform>().FirstOrDefault();
            if (_translateTransform != null)
            {
                var binding = new Binding("Y")
                {
                    Source = _translateTransform
                };
                BindingOperations.SetBinding(this, TranslateYProperty, binding);
            }
        }
    }

    private void UpdateTopMargin(double translateY)
    {
        LayoutRoot.Margin = new Thickness(0, -translateY, 0, 0);
    }

谢谢

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