219

As I am new in react-native so if there is anything wrong in steps let me know.

I have build a react native android app using the command as per documentation

react-native android

while running on device the following command was used

react-native run-android

which gives me the output of 2 apk files in my projectfolder/android/app/build/outputs/apk

enter image description here

now when I use to install this apk after the installation it ask for an development server to connect to bundle the JS. But my requirement is that the user doesn't have to struggle with the development server just he needs to install the apk and everything is done.

Have gone through some stackoverflow Questions but not helpful to build unsigned apk which doesn't require development server.

Can you guys help me finding the way that how to build and unsigned apk in react native?

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1
  • 2
    Run 'react-native start', it will server your js bundle in development mode. The purpose is so you can edit js files on the fly. Use release mode doesnt need any server as it will include the necessary bundle with it. See answer below
    – kar
    Commented Feb 11, 2016 at 1:18

19 Answers 19

Reset to default
319

You need to manually create the bundle for a debug build.

Bundle debug build:

#React-Native 0.59
react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/src/main/assets/index.android.bundle --assets-dest ./android/app/src/main/res

#React-Native 0.49.0+
react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug

#React-Native 0-0.49.0
react-native bundle --dev false --platform android --entry-file index.android.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug

Then to build the APK's after bundling:

$ cd android
#Create debug build:
$ ./gradlew assembleDebug
#Create release build:
$ ./gradlew assembleRelease #Generated `apk` will be located at `android/app/build/outputs/apk`

P.S. Another approach might be to modify gradle scripts.

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16
  • 4
    In case someone is missing assets: this worked for me --assets-dest ./android/app/src/main/res/
    – Juan Solano
    Commented Aug 10, 2016 at 19:36
  • 14
    And if doing this gives me a big red screen when I start the app? (Note: I am running this directly after ejecting)
    – Simon Forsberg
    Commented Aug 3, 2017 at 19:01
  • 3
    How to take build for latest version because we do not hve index.android.js ?
    – Vivek
    Commented Oct 11, 2017 at 15:44
  • 9
    People with latest version, please change entry point to --entry-file index.js, thanks.
    – Rishabh Bhatia
    Commented Mar 2, 2018 at 16:18
  • 6
    react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug for the new reactnative version where the index.js is unified for ios and android
    – ir2pid
    Commented Jun 18, 2018 at 8:40
135

React Version 0.62.1

In your root project directory

Make sure you have already directory android/app/src/main/assets/, if not create directory, after that create new file and save as index.android.bundle and put your file in like this android/app/src/main/assets/index.android.bundle

After that run this

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/

cd android && ./gradlew assembleDebug

Then you can get apk in app/build/outputs/apk/debug/app-debug.apk

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5
  • @jeeva : how to connect application back to development server of react native ?
    – Mayur Baldha
    Commented Sep 11, 2019 at 13:44
  • 3
    The point which create index.android.bundle is really important for not using development server in host.
    – Lee Elton
    Commented Jan 7, 2020 at 7:16
  • @ Mayur Balha : You can connect back via usb or wifi (connected on same network). For WiFi connect back to server in your react app shake your mobile on emulator press Win+R then click dev settings Scroll down "Debug Server Host & Port" enter your ip address and port( on windows open cmd enter "ipconfig" or Mac open terminal enter "ifconfig" ) like 192.168.1.1:8080 then press ok again shake or Press Win+R for emulator press reload now you can see app connect back to developement ( It will only working for Debug not for Release Apk ).
    – Jeeva
    Commented Jan 8, 2020 at 10:13
  • It's working fine on RN 0.62.1... Should be the correct answear in most recent version!
    – Albert E. Souza
    Commented Apr 7, 2020 at 16:34
  • 1
    I had to run using npx: npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/
    – m_c
    Commented Nov 6, 2023 at 12:26
130

Please follow those steps.

Bundle your js:

if you have index.android.js in project root then run 

react-native bundle --dev false --platform android --entry-file index.android.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug

if you have index.js in project root then run 

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

Create debug apk:

cd android/
./gradlew assembleDebug

Then You can find your apk here:

cd app/build/outputs/apk/
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10
  • 12
    And if doing this gives me a big red screen when I start the app? (Note: I am running this directly after ejecting)
    – Simon Forsberg
    Commented Aug 3, 2017 at 18:59
  • 2
    @SimonForsberg if you are using react ^0.5, change the entry point to index.js instead of App.js or index.android.js, react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug
    – d.bayo
    Commented Apr 25, 2018 at 18:08
  • 6
    Not working, this commands building an apk but that apk is not running without packager server.
    – Vishal Chhodwani
    Commented Aug 10, 2018 at 10:36
  • 3
    This is not going to work, because it requires a dev server
    – sheriff_paul
    Commented May 15, 2019 at 17:16
  • 2
    I'm having the same issue, when generating the debug-APK, I could install it, but I need the dev server, and when I use the release APK, I could not install it on my phone, I don't know what is wrong with it
    – aName
    Commented Jul 11, 2019 at 22:19
30

With me, in the project directory run the following commands.

For react native old version (you will see index.android.js in root):

mkdir -p android/app/src/main/assets && rm -rf android/app/build && react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res && cd android && ./gradlew clean assembleRelease && cd ../

For react native new version (you just see index.js in root):

mkdir -p android/app/src/main/assets && rm -rf android/app/build && react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res && cd android && ./gradlew clean assembleRelease && cd ../

The apk file will be generated at:

  • Gradle < 3.0: android/app/build/outputs/apk/
  • Gradle 3.0+: android/app/build/outputs/apk/release/
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6
  • can you please elaborate a bit and how does it solves the problem?
    – Priyal
    Commented Aug 29, 2017 at 5:00
  • I was getting error opening in in index.android.bundle , and solved it by your suggestion. Thank you... :)
    – zephyr
    Commented Apr 19, 2018 at 12:09
  • 6
    For me it is $ mkdir -p android/app/src/main/assets && rm -rf android/app/build && react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res && cd android && ./gradlew assembleDebug
    – Arif
    Commented Apr 28, 2018 at 16:39
  • File not found: index.android.js in any of the project roots
    – Anuj
    Commented Sep 20, 2018 at 12:35
  • 1
    Note that --entry-file index.android.js needs to be replaced with --entry-file index.js for newer projects that have index.js instead of index.android.js in the root of their project directory.
    – olfek
    Commented Sep 25, 2018 at 12:13
19

After you follow the first response, you can run your app using

react-native run-android --variant=debug

And your app will run without need for the packager

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1
  • 1
    the simplest answer was the most efficient all along, it worked flawless, spent days testing out different command lines and tons of js configurations, and everything was resumed in this
    – Nicolas Silva
    Commented Oct 1, 2019 at 19:25
13

As of react-native 0.57, none of the previously provided answers will work anymore, as the directories in which gradle expects to find the bundle and the assets have changed.

Simple way without react-native bundle

The simplest way to build a debug build is without using the react-native bundle command at all, but by simply modifying your app/build.gradle file.

Inside the project.ext.react map in the app/build.gradle file, add the bundleInDebug: true entry. If you want it to not be a --dev build (no warnings and minified bundle) then you should also add the devDisabledInDebug: true entry to the same map.

With react-native bundle

If for some reason you need to or want to use the react-native bundle command to create the bundle and then the ./gradlew assembleDebug to create the APK with the bundle and the assets you have to make sure to put the bundle and the assets in the correct paths, where gradle can find them.

As of react-native 0.57 those paths are android/app/build/generated/assets/react/debug/index.android.js for the bundle

and android/app/build/generated/res/react/debug for the assets. So the full commands for manually bundling and building the APK with the bundle and assets are:

react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/generated/assets/react/debug/index.android.bundle --assets-dest ./android/app/build/res/react/debug

and then

./gradlew assembleDebug

Bundle and assets path

Note that that paths where gradle looks for the bundle and the assets might be subject to change. To find out where those paths are, look at the react.gradle file in your node_modules/react-native directory. The lines starting with def jsBundleDir = and def resourcesDir = specify the directories where gradle looks for the bundle and the assets respectively.

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4
  • 1
    The suggested paths do not match with the resulting react-native bundle command. And none of the variants ends up with bundle being part of the APK with React Native 0.63. See the description in bug reported to React Native CLI docs.
    – Radek Matěj
    Commented Oct 6, 2020 at 18:52
  • 1
    But thanks for the suggestion with bundleInDebug. That's the right way to go. Using react-native bundle makes no sense when there are Gradle scripts taking care of everyghing.
    – Radek Matěj
    Commented Oct 6, 2020 at 18:54
  • The paths might have changed from react native 0.57 until now, so I don't know if the paths are still up to date.
    – TheBaj
    Commented Oct 7, 2020 at 22:10
  • 1
    Yes, they've changed dramatically. Your answer is still the closest one to the optimal solution. I would just add a note that none of these paths is working anymore.
    – Radek Matěj
    Commented Oct 9, 2020 at 8:13
12

Generate debug APK without dev-server

If you really want to generate a debug APK (for testing purpose) that can run without the development server, Congrats! here I am to help you. :)
Everyone is saying that we need to run two commands react-native bundle ... and then gradlew assembleDebug but the generated APK still doesnot work without development server. After many research & try I figured out that we need to change in the gradle file (as in step-2). Just follow these steps:

  1. In your react native project go to /android/app/src/main create a folder assets
  2. edit android > app > build.gradle
project.ext.react = [
    ...
    bundleInDebug: true, // add this line
]
  1. run this command at the root directory of your react native project
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
  1. Now, go into the android folder: cd android
  2. And, run this command: gradlew assembleDebug
    (if build failed, try building assembleDebug from android studio)

This will create app-debug.apk file in android/app/build/outputs/apk/debug directory, which you can install & run without dev-server.

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2
  • 2
    For me after copying assets, I faced duplicate resources issue.
    – Muhammad Maqsood
    Commented Jul 15, 2021 at 8:36
  • 1
    I upvoted this answer as step 2 Adding bundleInDebug: true) is necessary to make it work without a server. Tested with react-native 0.66. You do end up with duplicate resources in android/app/build/generated/res/react/debug/ and android/app/src/main/res The solution is to delete the duplicates in the latter directory
    – mike
    Commented Sep 10, 2022 at 20:07
9

There are two extensions you can use for this. This is added to react-native for setting these:

  1. disableDevInDebug: true: Disables dev server in debug buildType
  2. bundleInDebug: true: Adds jsbundle to debug buildType.

So, your final project.ext.react in android/app/build.gradle should look like below

project.ext.react = [
    enableHermes: false,  // clean and rebuild if changing
    devDisabledInDev: true, // Disable dev server in dev release
    bundleInDebug: true, // add bundle to dev apk
]
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2
  • 1
    in your code should be bundleInDebug instead bundleInDev
    – Peretz30
    Commented May 11, 2021 at 9:26
  • this should be the accepted answer. both devDisabledInDev and bundleInDebug should be set to true!
    – Teo
    Commented Oct 18, 2021 at 2:57
7

For Windows user if all steps followed properly from this: https://facebook.github.io/react-native/docs/signed-apk-android.html

You need to only run: gradlew assembleRelease

And your file will be:

  • app-release.apk
  • app-release-unaligned.apk

Location: E:\YourProjectName\android\app\build\outputs\apk

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4
  • You can install/share app-release.apk to any device
    – Dharam Mali
    Commented Jan 2, 2017 at 7:16
  • 2
    Usually, the debug build has a different configuration than the release build (e.g. it uses a staging API). This doesn't help if you want a standalone APK that uses a different build configuration from the release
    – Josh
    Commented Feb 27, 2017 at 15:39
  • This APK is just for development/Testing purpose.
    – Dharam Mali
    Commented Feb 28, 2017 at 6:15
  • First cd into android folder
    – Dylan Karimagoko
    Commented Apr 30 at 8:24
7

Just in case someone else is recently getting into this same issue, I'm using React Native 0.59.8 (tested with RN 0.60 as well) and I can confirm some of the other answers, here are the steps:

  1. Uninstall the latest compiled version of your app installed you have on your device

  2. Run react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

  3. run cd android/ && ./gradlew assembleDebug

  4. Get your app-debug.apk in folder android/app/build/outputs/apk/debug

good luck!

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3
  • 1
    Doesn't work!!!, it generate the debug APK, but the app still need the dev server
    – aName
    Commented Jul 11, 2019 at 21:56
  • This can't work in react-native 0.59.8, as gradle expects the bundle to be in android/app/build/generated/assets/react/debug/index.android.js and the assets to be in android/app/build/generated/res/react/debug as of react-native 0.57.
    – TheBaj
    Commented Sep 10, 2019 at 15:31
  • Works fine for react native 0.60 >
    – Moso Akinyemi
    Commented Jul 9, 2020 at 7:36
6

It can be possible to generate an unsigned apk version for testing purpose so you can run on your mobile.

Initially i got the red screen errors as most mentioned here. but i followed the same which was mentioned here and it worked for me.

On your console from working directory, run these four commands

react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug

cd android

gradlew assembleDebug

gradlew assembleRelease

And then APK file will produce on : android\app\build\outputs\apk\debug\app-debug.apk

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0
5

quite late for the party but none of the solutions at least on page 1 does not work for me. Thus I looked a bit deeper into the grade tasks registered by react;

just add bundleInDebug : true as shown in @Er Suman G's answer

run ./gradlew assembleDebug or gradle.bat assembleDebug based on your environment in your android folder.

This will generate the debuggable non server required app in android/app/build/outputs/apk/debug

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4

I'm on react native 0.55.4, basically i had to bundle manually:

react-native bundle --dev false --platform android --entry-file index.js --bundle- 
output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets- 
dest ./android/app/build/intermediates/res/merged/debug

Then connect your device via usb, enable usb debugging. Verify the connected device with adb devices.

Lastly run react-native run-android which will install the debug apk on your phone and you can run it fine with the dev server

Note:

  • From 0.49.0, the entrypoint is a single index.js
  • gradlew assembleRelease only generates the release-unsigned apks which cannot be installed
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2

Generate debug APK without dev-server

If you want to generate a debug APK (for testing purposes) that can run without the development server.

  1. In your react native project go to /android/app/src/main create a folder assets
  2. edit android > app > build.gradle
universalApk true  // If true, also generate a universal APK
  1. run this command at the root directory of your react native project
npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
  1. Now, go into the android folder: cd android
  2. And, run this command: ./gradlew assembleDebug
    (if build failed, try building assembleDebug from android studio)

Just do this things.

and if you want to install app in device just run cmd

adb install 'path/add-debug.apk'
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1

Add devDisabledInDebug: true to project.ext.react in build.gradle file.

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1

I wanted to profile my app from Android Studio which builds a debug build and I hit the issue of no packaged bundle. I could build a release build with <profileable android:shell="true"/> and attach the profiler after starting, but I needed specifically to profile my app's startup so there wasn't enough time to attach and I couldn't figure out how to launch a release build with the profiler. So I needed a way to build the debug build with the bundle. I'm running Expo 50 and React Native 0.73.4 and instead of the following in build.gradle:

project.ext.react = [
    enableHermes: false,  // clean and rebuild if changing
    devDisabledInDev: true, // Disable dev server in dev release
    bundleInDebug: true, // add bundle to dev apk
]

I had to use debuggableVariants:

react {
    debuggableVariants = []
}

If editing the build.gradle file in Android Studio, after adding the above line and saving, click Sync Now in the top right. Then I could connect my phone and Run } Profile 'app' with complete data.

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0

I found a solution changing buildTypes like this:

buildTypes {
  release {
    signingConfig signingConfigs.release
  }
}
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0

Happened to me as well, apparently i forgot to import the variable

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0

Apk generate without keystore in vscode

  1. npx react-native bundle --dev false --platform android --entry-file index.js --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug
  2. cd android
  3. ./gradlew assembleDebug
  4. ./gradlew assembleRelease

check folder: android/app/build/outputs/apk/release->.apk

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