I'm also facing the same problem on the parent device. The Activity picker displaying all apps from the child device, but $selection is empty, also onChange() didn't trigger. But the same is working properly on the child device. (Both running 15.4.1). Also, I have a query, anyone know how to create Application/ApplicationToken instance from the token received from the ActivityPicker ? I'm planning to pass this token to the child device somehow. But here is no documentation about how to serialize/deserialize the tokens. Anyone managed to store/send the tokens from one device to another ? Thanks :)