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There is no problem in the development environment, but when I get the release build, the app crashes. (Android) I created a new project (v0.68.2), I didn't make any changes, the room crashed in the same way.

npx react-native run-android --variant=release

FATAL EXCEPTION: create_react_context

java.lang.RuntimeException: Unable to load script. Make sure you're either running Metro (run 'npx react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.

FATAL EXCEPTION: create_react_context
Process: com.testreleasebuild, PID: 8291
java.lang.RuntimeException: Unable to load script. Make sure you're either running Metro (run 'npx react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.
    at com.facebook.react.bridge.CatalystInstanceImpl.jniLoadScriptFromAssets(Native Method)
    at com.facebook.react.bridge.CatalystInstanceImpl.loadScriptFromAssets(CatalystInstanceImpl.java:248)
    at com.facebook.react.bridge.JSBundleLoader$1.loadScript(JSBundleLoader.java:29)
    at com.facebook.react.bridge.CatalystInstanceImpl.runJSBundle(CatalystInstanceImpl.java:277)
    at com.facebook.react.ReactInstanceManager.createReactContext(ReactInstanceManager.java:1422)
    at com.facebook.react.ReactInstanceManager.access$1200(ReactInstanceManager.java:138)
    at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java:1111)
    at java.lang.Thread.run(Thread.java:923)
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5 Answers5

9

For my case, after upgrade my react-native project from version 0.69.x to 0.70.x. The Android debug build should work but release build got same issue. Change to use Android Gradle plugin 7.2.2 help me resolved this.

android/build.gradle

classpath 'com.android.tools.build:gradle:7.2.2'
Cuong Lam
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    This was it for me! I had upgraded to 7.3.1 which worked on debug builds but crashed on start in release mode. Lowering to 7.2.2 it started working again. – Simon Bengtsson Oct 26 '22 at 18:24
5

The Android Gradle Plugin version was 7.0.4 when the project was first created. Android Studio version asked me to upgrade to 7.2.1, so I upgraded. It worked when I downgraded the version to 7.0.4.

android>build.gradle

classpath('com.android.tools.build:gradle:7.0.4')
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1

this helped me to solve it https://github.com/facebook/react-native/issues/29398#issuecomment-708545702

//Fix for bundle not getting included in APK or AAB with android gradle plugin 4+
//Seems like there's a task ordering issue and the assets get computed before the bundle is copied
//This forces the copy task to run before merge resources
project.afterEvaluate {
        tasks.findAll { task ->
            task.name.startsWith('merge') && task.name.endsWith('Resources')
        }.each { t -> t.dependsOn "copyReleaseBundledJs" }
}
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0

This link may be useful : App Crash in Release Build

And url for similar question: Duplicate question

Jimmy
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0

Later i found solution to run this command

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

above command modify index.android.bundle and create it if not exist, problem mostly is that file index.android.bundle not exist.

if you have got a problem with assets after run this command remove created assets will work ie remove created drawable folders

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