# Add Chat SDK to your project ### Android X Make sure you've added the following to your `gradle.properties` file: ``` android.useAndroidX=true android.enableJetifier=true ``` ### Inherit from Chat SDK theme The Chat SDK uses custom attributes so you need to make sure that your app inherits from the Chat SDK theme. ``` <style name="AppTheme" parent="ChatSDKTheme"> ``` ### Add Gradle dependencies ##### Project-level `build.gradle` ``` buildscript { dependencies { classpath "com.google.gms:google-services:4.3.3" ... } ... } allprojects { repositories { google() jcenter() maven { url "https://jitpack.io" } maven { url "http://dl.bintray.com/chat-sdk/chat-sdk-android" } } } ``` ##### App-level `build.gradle` Enable multi-dex, Java 8 and the Google Services plugin: ``` apply plugin: 'com.google.gms.google-services' android { defaultConfig { multiDexEnabled = true ... } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } ``` Then add the dependencies. Replace the `[latest-version]` with the version in the badge: [ ![Download](https://api.bintray.com/packages/chat-sdk/chat-sdk-android/AudioMessagePro/images/download.svg) ](https://bintray.com/chat-sdk/chat-sdk-android/AudioMessagePro/_latestVersion) Choose **one** of the following backends to use: **Firebase** ``` implementation "sdk.chat:firebase-app:[latest-version]" ``` **FireStream (experimental)** ``` implementation "sdk.chat:firestream-app:[latest-version]" ``` **XMPP (experimental)** ``` implementation "sdk.chat:xmpp-app:[latest-version]" ```