File list (Check if you may need any files):
AndroidChat-master
..................\.gitignore
..................\LICENSE
..................\README.md
..................\app
..................\...\build.gradle
..................\...\proguard-rules.pro
..................\...\src
..................\...\...\main
..................\...\...\....\AndroidManifest.xml
..................\...\...\....\java
..................\...\...\....\....\com
..................\...\...\....\....\...\firebase
..................\...\...\....\....\...\........\androidchat
..................\...\...\....\....\...\........\...........\Chat.java
..................\...\...\....\....\...\........\...........\ChatApplication.java
..................\...\...\....\....\...\........\...........\ChatListAdapter.java
..................\...\...\....\....\...\........\...........\FirebaseListAdapter.java
..................\...\...\....\....\...\........\...........\MainActivity.java
..................\...\...\....\res
..................\...\...\....\...\drawable
..................\...\...\....\...\........\firebase_logo.png
..................\...\...\....\...\layout
..................\...\...\....\...\......\activity_main.xml
..................\...\...\....\...\......\chat_message.xml
..................\...\...\....\...\values-sw720dp-land
..................\...\...\....\...\...................\dimens.xml
..................\...\...\....\...\values
..................\...\...\....\...\......\colors.xml
..................\...\...\....\...\......\dimens.xml
..................\...\...\....\...\......\strings.xml
..................\...\...\....\...\......\styles.xml
..................\build.gradle
..................\gradle
..................\......\wrapper
..................\......\.......\gradle-wrapper.jar
..................\......\.......\gradle-wrapper.properties
..................\gradlew
..................\gradlew.bat
..................\screenshot.png
..................\settings.gradle