gitignore file for Android projects

Android .gitignore

# built application files
*.apk
*.ap_

# lint folder
lint

# files for the dex VM
*.dex

# Java class files
*.class

# generated files
bin/
gen/
classes/
gen-external-apklibs/

# maven output folder
target

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

# Eclipse project files
.classpath
.project
.metadata
.settings

# IntelliJ files
.idea
*.iml

# OSX files
.DS_Store

# Windows files
Thumbs.db

# vi swap files
*.swp

# backup files
*.bak

# gradle directory
.gradle
gradlew
gradlew.bat
gradle/
build/

# crashlytics
com_crashlytics_export_strings.xml
crashlytics-build.properties