---
title: "startController(onNewFabric:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrcontrollerfactory/startcontroller(onnewfabric:)"
---

# startController(onNewFabric:)

## Declaration

```swift
func startController(onNewFabric startupParams: MTRDeviceControllerStartupParams) -> MTRDeviceController?
```