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# ar_session_set_data_provider_state_change_handler

Sets the handler for responding to a state change of one or more data providers.

```
extern void ar_session_set_data_provider_state_change_handler(ar_session_t session, dispatch_queue_t queue, ar_session_data_provider_state_change_handler_t data_provider_state_change_handler);
```

## Parameters

`session`

The `ar_session_t` instance.

`queue`

The queue on which the handler will be called. Passing NULL will default to the main queue.

`data_provider_state_change_handler`

The data provider state change handler.

## Discussion> Note: Setting this will override the function set using `ar_session_set_data_provider_state_change_handler_f`.

---

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