why the SketchEditor always is null in xamarin.Android

xipeng

I want to draw polyline use SketchEditor in Android, but this SketchEditor always is null,why?

my code as follow：

btnEdit = FindViewById<Button>(Resource.Id.button1);
btnEdit.Click += (s, e) => {
try
{
SketchEditor se = new SketchEditor();
this._mapView.SketchEditor = se;
this._mapView.SketchEditor.StartAsync(SketchCreationMode.Polyline);
}
catch(Exception ex)
{
}

Really looking forward to answer 

thanks

PreetiMaske

We are aware of this issue. This bug is already logged in our bug tracking system. We will try to get this fixed in upcoming release in summer. At this point , the workaround would be to create the layout in the activity and add the MapView from within the activity.

 <SPAN class="keyword token">protected</SPAN> <SPAN class="keyword token">override</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">OnCreate</SPAN><SPAN class="punctuation token">(</SPAN>Bundle bundle<SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 <SPAN class="keyword token">base</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">OnCreate</SPAN><SPAN class="punctuation token">(</SPAN>bundle<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 layout <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">LinearLayout</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> Orientation <SPAN class="operator token">=</SPAN> Orientation<SPAN class="punctuation token">.</SPAN>Vertical <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">MapView</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 Map <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Map</SPAN><SPAN class="punctuation token">(</SPAN>Basemap<SPAN class="punctuation token">.</SPAN><SPAN class="token function">CreateImagery</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

 ButtonStart <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Button</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">this</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 Text <SPAN class="operator token">=</SPAN> <SPAN class="string token">"Start"</SPAN><SPAN class="punctuation token">;</SPAN>
 Click <SPAN class="operator token">+</SPAN><SPAN class="operator token">=</SPAN> BtnClickAsync<SPAN class="punctuation token">;</SPAN>

 <SPAN class="token function">AddView</SPAN><SPAN class="punctuation token">(</SPAN>ButtonStart<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="token function">AddView</SPAN><SPAN class="punctuation token">(</SPAN>_mapView<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 layout<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>