Git wont ignore /build/intermediates/ files even though I added build/ to .gitignore

Question

I am doing android development in android studio and i'm trying to ignore all /build/ files but it isn't working. This is my current .gitignore file

# built application files
*.apk
*.ap_

# files for the dex VM
*.dex

# Java class files
*.class

# built native files
*.o
*.so

# generated files
bin/
gen/

# Ignore gradle files
.gradle/
build/

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

# Proguard folder generated by Eclipse
proguard/

# Eclipse Metadata
.metadata/

# Mac OS X clutter
*.DS_Store

# Windows clutter
Thumbs.db

# Intellij IDEA (see https://intellij-support.jetbrains.com/entries/23393067)
.idea/workspace.xml
.idea/tasks.xml
.idea/datasources.xml
.idea/dataSources.ids

.*
!/.gitignore

but when I do a git status, build files still appear

Answer 1

Chances are they were added to the repo before they were added to the .gitignore file. You should remove them from the repo with git rm --cached filename.ext , and commit (along with the .gitignore file).