# Display an In-App Changelog for a new published version

### In-App Changelog content

In `LocalGetWhatsNewRepository` find a `whatsNewFor` function that returns a list of `FeatureItemData`.

A `FeatureItemData` is just a data class with 

* an image vector
* an icon tint color
* an icon background color
* a title
* a description

This way in whatsNewFor you can do this: 

```
return when (build) {
    "3" -> changelog3
    "4" -> changelog4 
    etc
}
```

The title and description can be localized like : 

```
FeatureItemData(
    imageVector = Icons.Rounded.Collections,
    iconTint = Color(0XFF161415),
    iconBackgroundColor = Color(0xFFb4a13e),
    title = SharedRes.strings.collection_feature,
    text = SharedRes.strings.collection_feature_description
)
```

Learn more about localization [here](https://docs.appkickstarter.com/features/translations).

#### Get In-App Changelog from server

The function `whatsNewFor` is a suspend function: this means you can easily plugs a connexion to a server to fetch the in-app changelog. Example: 

```
class WhatsNewRepository(inAppChangelogApi: InAppChangelogApi) {

    suspend fun whatsNewFor(build: String): List<FeatureItemData> {
        return inAppChangelogApi.get(build)
    }
}
```

### Update the latest version seen

```
UpdatesLatestWhatsNewSeen
```