# Opt-out

When opt-out is enabled, the SDK stops sending all events.

{% hint style="info" %}
The React Native SDK operates based on the Android SDK and iOS SDK.
{% endhint %}

## Configuration at Initialization

```javascript
import { createInstance, HackleProvider } from "@hackler/react-native-sdk";

const config = {
    optOutTracking: true
};

const hackleClient = createInstance("YOUR_APP_SDK_KEY", config);

const App = () => {
  return (
    <HackleProvider hackleClient={hackleClient}>
      <YourApp />
    </HackleProvider>
  );
};
```

## Runtime Opt-out Control

```javascript
hackleClient.setOptOutTracking(true);
hackleClient.setOptOutTracking(false);
const isOptOut = await hackleClient.isOptOutTracking();
```

## Persistence Management

{% hint style="warning" %}
The opt-out state changed at runtime is reset to the value configured in the initialization Config when the app restarts.

To persist the state after an app restart, you must implement your own save and restore logic.
{% endhint %}

```javascript
import AsyncStorage from '@react-native-async-storage/async-storage';

async function saveOptOutState(optOut) {
    await AsyncStorage.setItem("hackle_opt_out", JSON.stringify(optOut));
    hackleClient.setOptOutTracking(optOut);
}

async function getOptOutConfig() {
    const value = await AsyncStorage.getItem("hackle_opt_out");
    const optOut = value ? JSON.parse(value) : false;
    return {
        optOutTracking: optOut
    };
}

const config = await getOptOutConfig();
const hackleClient = createInstance("YOUR_APP_SDK_KEY", config);
```


---

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