Question

我的Windows Phone中的地图上显示了一条路线。现在我想根据地图上绘制的路线来适应缩放。

我做了以下事情：

this.map.SetView(LocationRectangle.CreateBoundingRectangle(locations));

locations是一个GeoCoordinate的数组。在横向方向上它可以很好地工作，但是当我切换到纵向方向时，它不会。

--- --- EDIT

以下是相关代码：

在我的OnLoad-Method中调用的draw方法中，我的位置数组在此填充：

double[,] givenCoordinates;
private MapOverlay overlay;
private Microsoft.Phone.Maps.Controls.MapLayer layer = new Microsoft.Phone.Maps.Controls.MapLayer();
private List<GeoCoordinate> locations = new List<GeoCoordinate>();

private void drawMap()
{
    try
    {
        bool centerPosition = false;
        for (int i = 0; i < givenCoordinates.GetLength(0); i++)
        {
            GeoCoordinate tmpCoord;
            GeoCoordinate centerPoint = new GeoCoordinate(0, 0);

            Image image = new Image();
            BitmapImage myImage = new BitmapImage(new Uri(@"Images\pushpin.png", UriKind.Relative));
            image.Width = 40;
            image.Height = 40;
            image.Opacity = 10;
            image.Source = myImage;

            if (givenCoordinates[i, 0] != 0 && givenCoordinates[i, 1] != 0)
            {
                tmpCoord = new GeoCoordinate(givenCoordinates[i, 0], givenCoordinates[i, 1]);

                if (!centerPosition)
                {
                    centerPoint = new GeoCoordinate(givenCoordinates[i, 0], givenCoordinates[i, 1]);
                    centerPosition = true;
                }

                overlay = new MapOverlay
                {
                    GeoCoordinate = tmpCoord,
                    Content = image,
                    PositionOrigin = new System.Windows.Point(0.5, 1)
                };
                layer.Add(overlay);
                locations.Add(tmpCoord);
            }
        }
        delMap.Layers.Add(layer);

        Microsoft.Phone.Maps.Controls.MapPolyline line = new Microsoft.Phone.Maps.Controls.MapPolyline();

    }
    catch (Exception ex)
    {
        MessageBox.Show("Error loading the map!");
        MessageBox.Show(ex.Message);
    }
}

我在OrientationChanged事件中，在Loaded事件中和单击按钮后调用setView（）方法，因此您可以轻松地将缩放恢复为默认值。代码：

private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
    this.delMap.SetView(LocationRectangle.CreateBoundingRectangle(locations));
}

private void btn_default_zoom_Click(object sender, RoutedEventArgs e)     
{
    this.delMap.SetView(LocationRectangle.CreateBoundingRectangle(locations));
}
private void PhoneApplicationPage_OrientationChanged_1(object sender, OrientationChangedEventArgs e)
{
     delMap.SetView(LocationRectangle.CreateBoundingRectangle(locations));
}

所有这些在横向模式下都能正常工作，它们都不能在纵向模式下工作，甚至按钮也不能。

Answer 1

我在调用drawMap

时尝试了这个小改动

//just for testing a list of locations
givenCoordinates = new double[3, 2];
givenCoordinates[0, 0] = 23.4896;
givenCoordinates[0, 1] = 12.1392;
givenCoordinates[1, 0] = 23.4835;
givenCoordinates[1, 1] = 12.1794;
givenCoordinates[2, 0] = 23.5153;
givenCoordinates[2, 1] = 12.1516;



drawMap();

await Task.Run(async () =>
{
    Thread.Sleep(1);
    Dispatcher.BeginInvoke(() =>
    {
        delMap.SetView(LocationRectangle.CreateBoundingRectangle(locations), MapAnimationKind.Linear);
    });
});

Windows Phone map.setView（）处于纵向模式

1 个答案: