在横向滑动中无法以编程方式在Windows Phone 8应用程序中工作

Question

我是Windows手机开发的初学者，我在纵向方向上以旋转视图方式扫描图像，我尝试了横向orintation，这是不成功的。请任何人帮我解决这个问题。

TouchPoint _first;

private List<TList> _pivotList;

public Pivot()
{
    InitializeComponent();
    Loaded += pivot_Loaded;
    Touch.FrameReported += Touch_FrameReported;
}







private void Touch_FrameReported(object sender, TouchFrameEventArgs e)

{ 

TouchPoint mainTouch = e.GetPrimaryTouchPoint(null);

if (mainTouch.Action == TouchAction.Down)

    _first = mainTouch;

else if (mainTouch.Action == TouchAction.Up)

{
    var xDelta = mainTouch.Position.X - _first.Position.X;

    var yDelta = Math.Abs(mainTouch.Position.Y - _first.Position.Y);

    if (yDelta > Math.Abs(xDelta))

        return;

    if (Math.Abs(xDelta - 0) > 10)

    {

        var currentIndex = pivotList.SelectedIndex;

        int noOfPivotItems = pivotList.Items.Count;


        currentIndex = (xDelta < 0) ?

            ++currentIndex % noOfPivotItems :
            (--currentIndex + noOfPivotItems) % noOfPivotItems;
        pivotList.SelectedIndex = currentIndex;

    }

}

}

Answer 1

这是DisplayOrientations的代码。

public Pivot()
{
    InitializeComponent();
    Loaded += pivot_Loaded;
            this.navigationHelper = new NavigationHelper(this);
            Windows.Graphics.Display.DisplayInformation.AutoRotationPreferences = Windows.Graphics.Display.DisplayOrientations.Landscape;
            Windows.Graphics.Display.DisplayInformation.AutoRotationPreferences = Windows.Graphics.Display.DisplayOrientations.PortraitFlipped;


        }