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POCallback from adapter to activity in monodroid
 

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    <p>So I have a listview and a gridview in my activity. Both have custom adapters. If a DragAction.Drop is performed I show a alert to confirm the action. If the user confirms this I will change some data in de database. Now the data is changed I need to refresh the listview. The method already exists but is part of the activity. I perform the alert and other actions that need to be done on drop in the adapter. So I need to tell the activity that the actions for the drop are completed. So the activity can call the refresh method.</p> <p>This is my code from the DragAction.Drop in the adapter:</p> <pre><code>case DragAction.Drop: truckNumber = e.Event.ClipData.GetItemAt (0).Text; truckLabelText = e.Event.ClipDescription.Label; AlertDialog.Builder alertBuilder = new AlertDialog.Builder (context); alertBuilder.SetTitle ("Please confirm"); alertBuilder.SetMessage ("Are you sure you want to assign Truck: " + truckNumber + " to Dock: " + dockName.Text + "?"); alertBuilder.SetPositiveButton ("Yes", async delegate { currentTruck.SetText (truckNumber, TextView.BufferType.Normal); truckLabel.SetText (truckLabelText, TextView.BufferType.Normal); await _DataLayer.changeTruckStatusCode (Convert.ToInt32 (truckNumber), 3); }); alertBuilder.SetNegativeButton ("No", delegate { }); alertBuilder.Show (); e.Handled = true; break; } }; dockName.SetText (item.name.ToString (), TextView.BufferType.Normal); currentTruck.SetText ("", TextView.BufferType.Normal); truckLabel.SetText ("", TextView.BufferType.Normal); return view; } </code></pre>
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