## Related terms
- mobile\-sdk
- campaign
- event
See the [glossary](/glossary.md) for definitions.
---
# React Native listeners
### Initialization {id=initialization}
A listener to handle the SDK lifecycle events.
---
---
### NotificationsListener {id=notifications-listener}
A listener to handle actions from the notifications module.
```JavaScript
Synerise.Notifications.setListener({
// The following method is called when Synerise receives a registration token from the native part of application
// It is optional function
onRegistrationToken: function(token) {
...
},
// The following method is called when registration for Push Notifications is needed.
// It is optional function
onNotification: function(payload) {
...
},
// The following method is called when Synerise receives a notification's payload from the native part of application.
// It is optional function
onRegistrationRequired: function() {
...
}
});
```
After invoking **onRegistrationRequired()** function, you must invoke the [Synerise.Notifications.registerForNotifications(registrationToken, mobileAgreement, onSuccess, onError)](/developers/mobile-sdk/method-reference/react-native/campaigns#register-for-push-notifications) method again.
---
---
### ClientStateListener {id=client-state-listener}
A listener to handle customer's sign-in state changes.
```JavaScript
Synerise.Client.setClientStateListener({
// The following method is called when a customer signs in.
// It is optional function
onClientSignedIn: function() {
...
},
// The following method is called when a customer signs out
// It is optional function
onClientSignedOut: function(reason) {
...
}
});
```
---
---
### InjectorListener {id=injector-listener}
A listener to handle URL and deeplink actions from the injector module.
```JavaScript
Synerise.Injector.setListener({
// The following method is called when Synerise handles URL action from campaign activities
// It is required function
onOpenUrl: function(url) {
...
},
// The following method is called when Synerise handles deep link action from campaign activities
// It is required function
onDeepLink: function(deepLink) {
...
}
});
```
---
---
### InjectorInAppMessageListener {id=injector-in-app-message-listener}
A listener to handle the states of [in-app messages](/developers/mobile-sdk/campaigns/in-app-message).
```JavaScript
Synerise.Injector.setInAppMessageListener({
// The following method is called after an in-app message appears
onPresent: function (data) {
...
},
// The following method is called after an in-app message disappears
onHide: function(data) {
...
},
// This method is called when the SRInApp.openUrl(url) method is used in an in-app message.
onOpenUrl: function (data, url) {
...
},
// This method is called when the SRInApp.openDeeplink(url) method is used in an in-app message.
onDeepLink: function (data, deepLink) {
...
},
// This method is called when the
// SRInApp.handleCustomAction(name, params) method is used in an in-app message.
onCustomAction: function(data, name, parameters) {
}
})
```
To provide context for an in-app message, set `Synerise.Injector.inAppContext[InAppContextKey.JinjavaContext]` before the message is rendered. For details, see [In-app context](/developers/mobile-sdk/method-reference/react-native/campaigns#in-app-context).
---
---
### InjectorInlineInAppMessageListener {id=injector-inline-in-app-message-listener}
A listener to handle actions from [inline in-app messages](/developers/mobile-sdk/campaigns/in-app-message/inline-in-app) and to receive components created by the SDK for event-triggered campaigns. In code, the interface is `IInlineInAppMessageListener`
```JavaScript
Synerise.Injector.setInlineInAppMessageListener({
// This method is called when the SDK creates a ready-to-display component
// after an event-based trigger for a placement with no mounted component.
onInlineInAppAvailable: (view, data) => {
...
},
// This method is called when the SRInApp.openUrl(url) method is used in an inline in-app message.
onOpenUrl: (data, url) => {
...
},
// This method is called when the SRInApp.openDeeplink(url) method is used in an inline in-app message.
onDeepLink: (data, deepLink) => {
...
},
// This method is called when the
// SRInApp.handleCustomAction(name, params) method is used in an inline in-app message.
onCustomAction: (data, name, parameters) => {
...
},
// This method is called when the SRInApp.customMethod(name, params) method is used in an inline in-app message.
// Resolve the completion exactly once — with success or failure.
onCustomMethod: (data, name, parameters, completion) => {
completion.success({});
},
});
```