MapControl事件未觸發;檢測用戶交互

Question

我想要檢測用戶何時開始拖動MapControl以從屏幕中心分離，但是Drag*事件中的NONE未被觸發。

map.MapTapped += Map_MapTapped; 
map.ActualCameraChanged += Map_ActualCameraChanged; 
map.DragEnter += Map_DragEnter; 
map.DragStarting += Map_DragStarting; 
map.DragLeave += Map_DragLeave; 
map.DragOver += Map_DragOver; 
map.ManipulationStarted += Map_ManipulationStarted; 
map.Tapped += Map_Tapped; 
map.PointerPressed += Map_PointerPressed; 
map.PointerMoved += Map_PointerMoved; 

，我看到解僱的唯一事件是MapTapped和ActualCameraChanged但是這兩個事件不火就拖，當我需要他們。

Answer 1

使用ActualCameraChanging上漲事件的同時拖動

<Maps:MapControl Name="MyMap" ActualCameraChanging="MyMap_ActualCameraChanging"/> 

使用ChangeReason檢查原因拖

private void MyMap_ActualCameraChanging(MapControl sender, MapActualCameraChangingEventArgs args) 
{ 
    if(args.ChangeReason == MapCameraChangeReason.UserInteraction) 
    { 
     //... 
    } 
}