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./gradlew assembleRelease produce very old Apk

I am trying to generate a new apk and I get a very old apk when I run
./gradlew assembleRelease
I am using react native above 0.63.
I tried to remove the build folder and remove caches and it still produces the old apk.
so my question is why does it produce the old apk? and how to get the new apk?

Delete files inside directory android/app/src/main/assets.
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
$ react-native run-android

try with:
rm -rf android/app/build
rm -rf android/build
cd android
./gradlew clean
cd ..
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 assembleRelease
this should clean the build folder and create a new index.android.bundle with all the updates

Try this:
cd android
./gradlew clean
./gradlew assembleRelease
cd ..

Images are not show in the debug apk - React Native

Hi I'm new to react native. I have created react native application and for testing I have get the debug apk as output. But once I installed on debug APK on real device some Images are not showing.. Anything wrong I have done ?

I think you haven't bundle your assets before generating debug apk
Try this code in your terminal for bundle all the assets and get debug apk as output
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

React Native Android runs in dev but not with release [duplicate]

Android Studio is generating very old apk for react-native project like 3 months old. But running perfectly in emulator while running this command "react-native run-android"
Process -
* Open file location
* Build => Build Bundles => Build APK
Tried re-installing android studio but still getting old APK

In the old react-native version, when we generate the android APK, sometimes the bundle is old, we have to generate it by ourself.
In the react-native 0.61, I find the problem is dismissed.
In the old version, firstly you should add the following script to the package.json
"scripts":{
...
"bundle-android": "react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./android/app/src/main/assets/index.android.bundle --assets-dest ./android/app/src/main/res",
...
}
the when you generate the apk , you firstly run the follwing script in the termail to generate the new bundle
npm run bundle-android
when the bundle outputs successfully, then go into the android directory and assemble the APK
cd android
./gradlew assembleRelease

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/
If you get an error of duplicate resources than go to res folder and delete the drawable-hdpi,drawable-mdpi,drawable-xhdpi,drawable-xxhdpi,drawable-xxxhdpi folder only and try to rebuild the project. It will work.

It is because, you have old index.android.bundle file. Follow these steps to update this file and create a new apk:
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
curl "http://localhost:8081/index.bundle?platform=android" -o "android/app/src/main/assets/index.android.bundle"
cd android && ./gradlew clean assembleDebug

React Native: generate release APK using npm command

I am using such command to generate an APK:
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 && react-native run-android
Is it possible to edit this command to generate release APK?

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 && ./gradlew assembleRelease
./gradlew assembleRelease assembles all release builds (and generates release apk)
Your release build should be available under the following directory: [projectRoot]/android/app/build/outputs/apk/release/

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 ../
I hope this will work for you…

ORG_GRADLE_PROJECT_bundleInArRelease=true npx react-native run-android --variant Release
then you will find the APK inside
./android/app/build/apk/release/
I hope it helps you

How to build debug apk in react native

I want to build unsigned apk or debug apk. My application is successfully running on localhost. I have tried different methods. But it shows the error. I have got the answer from Here . when applying the command
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
It showing the error is
Cannot find entry file index.android.js in any of the roots: ["D:\\workspace\\reactjs\\native\\myapp5"]
Then i have change index.android.js to App.js
Then it will showing the error is
ENOENT: no such file or directory, open 'D:\workspace\reactjs\native\myapp5\android\app\build\intermediates\assets\debug\index.android.bundle'
How to solve this problem? Please help me.
My react native versions are react-native-cli: 2.0.1 , react-native: 0.52.0 . Screenshot of my root folder i have posted.
when i run gradlew assembleDebug in android folder it showing the error.

In your root project directory
Make sure if you have already directory android/app/src/main/assets/ if not there 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 run this in cmd
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 app/build/outputs/apk/debug/app-debug.apk

The problem here is that you do not seem to have the entry file you have specified for react native bundle:
index.android.js
Replace it with your project's entry file index.js or app.js according to your project structure.
Update:
react-native bundle --dev false --platform android --entry-file <your-entry-file> --bundle-output ./android/app/build/intermediates/assets/debug/index.android.bundle --assets-dest ./android/app/build/intermediates/res/merged/debug
Create debug build:
cd android && ./gradlew assembleDebug
Your apk will be at android/app/build/outputs/apk

In the root folder of your project, run the following command:
For RN Old Version:
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 assembleDebug && cd ../
For RN New Version:
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 assembleDebug && cd ../
The apk is generated in following folder:
app/build/outputs/apk/debug/app-debug.apk
And if you want to run the apk on simulator. Run the following command:
react-native run-android --variant=debug

This will work..
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