apk (file format)
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Internet media type
|Type of format||
The Android Package with the file extension apk
used by the
Android operating system
, and a number of other Android-based operating systems for distribution and installation of
. It can be written in either
APK files can be generated and signed from
Android App Bundles
APK is analogous to other
-based operating systems. To make an APK file, a program for Android is first compiled using a tool such as
and then all of its parts are packaged into one container file. An APK file contains all of a program’s code (such as
files), resources, assets, certificates, and
. As is the case with many file formats, APK files can have any name needed, but it may be required that the file name ends in the file extension for being recognized as such.
Most Android implementations allow users to manually install APK files only after they turn on an “Unknown Sources” setting that allows installation from sources other than trusted ones like
. One may do so for many reasons, such as during the development of apps, to install apps not found on the store, or to install an older version of an existing app.
Use on other operating systems[
announcement event in June 2021,
showcased the new
Windows Subsystem for Android
(WSA) that will enable support for the
Android Open Source Project
(AOSP) and will allow users to run
on their Windows desktop. Microsoft confirmed users will be able to sideload Android apps onto Windows and that it would be possible to install APK files downloaded from third-party sources.
Users were not able to use WSA when the OS launched, but it is currently[
] being tested with Windows Insiders in the United States.[
Google plans to introduce its own way to run Android apps on Windows some time in 2022.
An APK file is an
that usually contains the following files and directories:
- The certificate of the application.
CERT.SF: The list of resources and a
of the corresponding lines in the MANIFEST.MF file; for example:
Signature-Version: 1.0 Created-By: 1.0 (Android) SHA1-Digest-Manifest: wxqnEAI0UA5nO5QJ8CGMwjkGGWE= ... Name: res/layout/exchange_component_back_bottom.xml SHA1-Digest: eACjMjESj7Zkf0cBFTZ0nqWrt7w= Name: res/drawable-hdpi/icon.png SHA1-Digest: DGEqylP8W0n0iV/ZzBx3MW0WGCA=
lib: the directory containing the compiled code that is platform dependent; the directory is split into more directories within it:
armeabi-v7a: compiled code for all
and above based processors only
arm64-v8a: compiled code for all
arm64 and above based processors only
x86: compiled code for
x86_64: compiled code for
, deprecated since NDK r17
res: the directory containing resources not compiled into resources.arsc (see below).
assets: a directory containing applications assets, which can be retrieved by
AndroidManifest.xml: An additional Android manifest file, describing the name, version, access rights, referenced library files for the application. This file may be in Android
that can be converted into human-readable plaintext XML with tools such as AXMLPrinter2, Apktool M, or Androguard.
classes.dex: The classes compiled in the
dex file format
Dalvik virtual machine
Android 4.4 KitKat
resources.arsc: a file containing precompiled resources, such as binary XML for example.
Android software development
Java Programming Language
. Android Developers. Retrieved 2018-12-03.
- Peters, Jay (2021-06-30).
“Google is moving away from APKs on the Play Store”
. The Verge. Retrieved 2021-08-15.
. Android Developers.
“Inside the Android Application Framework”
(video). Google Sites. 2008.
- Hatem Ben Yacoub (20 April 2018).
“Tips: How to install apk files on Android Emulator”
. Open Ha Magazine. Archived from
on 2012-05-26. Retrieved 2021-07-17.
“The Structure of Android Package (APK) Files”
. OPhone SDN. OPhone Software Developer Network. 17 November 2010. Archived from
on 8 February 2011.
“Unknown Sources: Everything you need to know!”
. Android Central. 27 July 2018.
“APK File Extension – What APK File is and How to open it?”
. Tips Overflow. Retrieved 2021-11-12.
- Parmar, Mayank (2021-06-27).
“Microsoft confirms Android apps will run on all Windows 11 PCs”
. Windows Latest. Retrieved 2021-06-28.
- Warren, Tom (2021-12-09).
“Google is bringing Android games to Windows in 2022”
. The Verge. Retrieved 2021-12-13.
“ABI Management | Android Developers”
. developer.android.com. Retrieved 16 June 2018.
“Android ABIs | Android NDK”
. Android Developers. Retrieved 2020-08-14.
Note: Historically the NDK supported ARMv5 (armeabi), and 32-bit and 64-bit
, but support for these ABIs was removed in NDK r17.
- Dan, Albert (Sep 5, 2018).
. GitHub. Retrieved 2020-08-14.
Support for ARMv5 (armeabi), MIPS, and MIPS64 has been removed. Attempting to build any of these
will result in an error.
Chuyên mục: App