The .gitignore I use for Android development

.gitignore-android

# Built application files
*.apk
*.aar
*.ap_
*.aab

# Files for the ART/Dalvik VM
*.dex

# Java class files
*.class

# Generated files
bin/
gen/
out/

# Gradle files
.gradle/
build/

# Local configuration file (sdk path, etc)
local.properties

# Proguard folder generated by Eclipse
proguard/

# Log Files
*.log

# Android Studio Navigation editor temp files
.navigation/

# Android Studio captures folder
captures/

# IntelliJ/Android Studio project files
.idea/
*.iml
*.ipr
*.iws

# Keystore files
*.jks
*.keystore

# External native build folder generated in Android Studio 2.2 and later
.externalNativeBuild
.cxx/

# Google Services (e.g. APIs or Firebase)
google-services.json

# Version control
vcs.xml

# lint
lint/

# Mac OS files
.DS_Store