全球定位系统在窗口手机（从当前位置移动，当我在路上移动，如何？）

Question

我正在使用GPS在Windows手机7.1，我得到了当前位置上冰淇淋地图，并得到最近的餐厅显示在冰上地图。但现在我想要在路上行驶时，向我展示的图钉也随我移动。 即当前位置也想随着我的动作而改变。

Answer 1

我希望this来帮助你。简而言之，您必须使用对象GeoCoordinateWatcher。

private void startLocationButton_Click(object sender, RoutedEventArgs e) 
{ 
    if (watcher == null) 
    { 
     watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.Default); 
     watcher.MovementThreshold = 20; 
     watcher.StatusChanged += new EventHandler<GeoPositionStatusChangedEventArgs>(watcher_StatusChanged); 
     watcher.PositionChanged += new EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>>(watcher_PositionChanged); 

    } 
    watcher.Start(); 
} 

void watcher_StatusChanged(object sender, GeoPositionStatusChangedEventArgs e) 
{ 
    switch (e.Status) 
    { 
     case GeoPositionStatus.Disabled: 
      MessageBox.Show("Location Service is not enabled on the device"); 
      break; 

     case GeoPositionStatus.NoData: 
      MessageBox.Show(" The Location Service is working, but it cannot get location data."); 
      break; 
    } 
} 

void watcher_PositionChanged(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e) 
{ 
    if (e.Position.Location.IsUnknown) 
    { 
     MessageBox.Show("Please wait while your prosition is determined...."); 
     return; 
    } 
}