Nearby Messages API sample chat application for Kotlin
Setup your Nearby Messagees API at Google Developers Console.
Follow official instruction below.
https://developers.google.com/nearby/messages/android/get-started
Put your API KEY in android:value of meta-data.
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.nearby.messages.API_KEY"
android:value="YOUR API KEY" />