React Native Built App is closing unexpectedly

Question

Okay, I've been struggling for the last two days and this is it. I'm developing my first React Native android app using React Native CLI and using the following Packages:

"dependencies": {
    "@react-native-masked-view/masked-view": "^0.2.6",
    "@react-navigation/drawer": "^6.3.1",
    "@react-navigation/material-bottom-tabs": "^6.1.1",
    "@react-navigation/material-top-tabs": "^6.1.1",
    "@react-navigation/native": "^6.0.8",
    "@react-navigation/stack": "^6.1.1",
    "react": "17.0.2",
    "react-native": "0.67.3",
    "react-native-gesture-handler": "^2.3.2",
    "react-native-immersive": "^2.0.0",
    "react-native-linear-gradient": "^2.5.6",
    "react-native-material-textinput": "^1.3.0",
    "react-native-pager-view": "^5.4.15",
    "react-native-paper": "^4.11.2",
    "react-native-reanimated": "^2.4.1",
    "react-native-safe-area-context": "^4.2.1",
    "react-native-screens": "^3.13.1",
    "react-native-svg": "^12.3.0",
    "react-native-tab-view": "^3.1.1",
    "react-native-vector-icons": "^9.1.0"
  },
  "devDependencies": {
    "@babel/core": "^7.12.9",
    "@babel/runtime": "^7.12.5",
    "babel-jest": "^26.6.3",
    "jest": "^26.6.3",
    "metro-react-native-babel-preset": "^0.66.2",
    "react-native-svg-transformer": "^1.0.0",
    "react-test-renderer": "17.0.2"
  },

In the Development mode, The App works just fine and smooth. I'm developing the app without any errors. But, When I built the app for production into aab and apk files, the issue arises. If I run the app, whether via npx react-native run-android --variant=release or installing the app on my physical device, the app just close instantly after opening. Here's the GitHub Repo Link

Note: I'm developing the app in Windows 10 with the latest Android Studio and all the latest versions of dependencies. Preview: App on Production Mode

Preview: App on Development Mode

score 1 · Accepted Answer · answered Mar 25 '22 at 21:52

1

Please run the app in the simulator with LogCat running and check the error message there. That should give some indication, like this it could be anything. If logcat does not automatically run in your android studio you can open a terminal and run:

adb logcat

answered Mar 25 '22 at 21:52

Fapi

323
2
15

Okay. The problem was, in android/app/build.gradle, I've changed following values: def enableProguardInReleaseBuilds = false def enableSeparateBuildPerCPUArchitecture = false universalApk false If I keep those unchanged, the builds work perfectly and smoothly. Can anyone please describe the reason? – Maruf Mar 30 '22 at 13:01
Maybe you can add this to your post in some way? Would make it easier for others to find. – Fapi Mar 30 '22 at 16:00

score 0 · Answer 2 · answered Apr 07 '22 at 23:37

The problem was in my android/app/build.gradle file. I've changed following values:

def enableProguardInReleaseBuilds = false

def enableSeparateBuildPerCPUArchitecture = false

universalApk false

If I keep those unchanged, the builds work perfectly and smoothly. Can anyone please describe the reason?

score 0 · Answer 3 · answered Sep 10 '22 at 18:16

This issue can occur due to variations from libs version incompatibilities, missing files and configuration...

In my case it was a missing key in file in: Info.plist

<key>NSUserTrackingUsageDescription</key>
    <string>$(PRODUCT_NAME) requires your permission to track in order to show you more relevant ads.</string>

Try looking at the simulator error log..

React Native Built App is closing unexpectedly

3 Answers3