Why doesn't .gitignore work for a new project in Android Studio?

Question

Android

I created a project which has a .gitignore file with a lot of content. After that, I initialized Git through the console and made a commit. But I still don't understand why it committed my files from .gitignore? What did I do wrong? The sequence of entered commands is in the screenshots.

.DS_Store

# built application files
*.apk
*.ap_

# files for the dex VM
*.dex

# Java class files
*.class

# generated files
bin/
out/
gen/

# Libraries used by the app
# Can explicitly add if we want, but shouldn't do so blindly.  Licenses, bloat, etc.
/libs


# Build stuff (auto-generated by android update project ...)
build.xml
ant.properties
local.properties
project.properties

# Eclipse project files
.classpath
.project

# idea project files
.idea/
.idea/.name
*.iml
*.ipr
*.iws

##Gradle-based build
.gradle
build/

Answer 1

You have a very old git -- update.
Are there sure to be no spaces or other characters at the end of lines in the .gitignore file?
https://git.kernel.org/cgit/git/git.git/tree/Docum...

Updates since v1.9 series
* Trailing whitespaces in .gitignore files, unless they are quoted
for fnmatch(3), eg "path\ ", are warned and ignored. Strictly
speaking, this is a backward-incompatible change, but very unlikely
to bite any sane user and adjusting should be obvious and easy.

https://git.kernel.org/cgit/git/git.git/tree/Docum...
Fixes since v2.0
* Mishandling of patterns in .gitignore that have trailing SPs quoted
with backslashes (eg ones that end with "\ ") has been
corrected.
(merge 97c1364be6b pb/trim-trailing-spaces later to maint).
https://git.kernel.org/cgit/git/git.git/tree/Docum...

Fixes since v2.4
* The codepaths that read .gitignore and .gitattributes files have been
taught that these files encoded in UTF-8 may have UTF-8 BOM marker at
the beginning; this makes it in line with what we do for configuration
files already.
(merge 27547e5 cn/bom-in-gitignore later to maint).

Answer 2

For git ignore to work, it must be in the repository before you commit anything else.
git add .gitignore
git commit -m 'add .gitignore'
git push
git add .
git commit -m 'initial commit'
git push