android activity - Activities are always collapsed in rehosted designer -

i'm trying rehost designer, every time slap workflow designer:

_workflowdesigner = new workflowdesigner(); // added ui here properties.content = _workflowdesigner.propertyinspectorview; _workflowdesigner.load(myworkflowinstance); 

where myworkflowinstance workflow defined in referenced assembly. have done magic register default activity metadata registered:

new designermetadata().register(); 

and i've registered custom nativeactivities:

public static void register(ienumerable<type> activitytypes) {                 // activitytypes custom nativeactivities     // , workflows (root of system.activities.activity)     var builder = new attributetablebuilder();     var attrgroups =         x in activitytypes         y in x.getcustomattributes(true).oftype<attribute>()         group y x g          select g;      foreach (var typegroup in attrgroups)         builder.addcustomattributes(typegroup.key, typegroup.toarray());     metadatastore.addattributetable(builder.createtable()); } 

yet, when load activity in designer get:

what missing here?

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i'm thinking has fact these workflows compiled , exist within implementation property of activity...

is workflow instance wrapped in activitybuilder?

update: investigating little further here found 1 possible solution using workflowinspectionservices.

var activities = workflowinspectionservices.getactivities(new demoworkflow()); designer.load(activities.first());