Hi there,
I’ve noticed a few crashes from my Android application in the wild that only reproduce on an EAS build.
Callstack
2021-09-08 16:41:45.940 9194-9194/com.repro.locationcrash E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.repro.locationcrash, PID: 9194
java.lang.RuntimeException: Unable to resume activity {com.repro.locationcrash/com.repro.locationcrash.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4003)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4035)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1940)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:209)
at android.app.ActivityThread.main(ActivityThread.java:7046)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:486)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
Caused by: java.lang.NullPointerException
at java.util.Objects.requireNonNull(Objects.java:203)
at expo.modules.location.LocationModule.handleForegroundLocationPermissions(LocationModule.java:838)
at expo.modules.location.LocationModule.lambda$requestForegroundPermissionsAsync$2$LocationModule(LocationModule.java:195)
at expo.modules.location.-$$Lambda$LocationModule$D--6Q7JrlKjA_yBo0ZZZH8hwBGk.onResult(Unknown Source:4)
at org.unimodules.adapters.react.permissions.PermissionsService$createListenerWithPendingPermissionsRequest$1.onRequestPermissionsResult(PermissionsService.kt:255)
at com.facebook.react.ReactActivityDelegate$2.invoke(ReactActivityDelegate.java:171)
at com.facebook.react.ReactActivityDelegate.onResume(ReactActivityDelegate.java:102)
at com.facebook.react.ReactActivity.onResume(ReactActivity.java:57)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1442)
at android.app.Activity.performResume(Activity.java:7795)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3993)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4035)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1940)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:209)
at android.app.ActivityThread.main(ActivityThread.java:7046)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:486)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
handleForegroundLocationPermissions is being given a null value for either the coarse location or fine location permissions inside of LocationModule.java.
Repro
- Create bare Expo app and install
expo-location. - Call
Location.requestForegroundPermissionsAsync()inApp.tsx. - Create an EAS build of the application for Android.
- Install the app on a device or simulator.
- Enable “Always show crash dialog” to make the crashes more obvious.
- Open the application.
- When the dialog asking for location permissions appears, switch to any other app.
- Open the app drawer and reopen the application.
- Observe the crash.
Doesn’t Occur on Expo Build
Using the legacy Expo Build command does not reproduce this issue according to my testing.
Repro Project Settings
Base Expo project. Only changes to project files are as follows:
App.js
import { StatusBar } from 'expo-status-bar';
import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import * as Location from 'expo-location';
export default function App() {
const [permission, setPermission] = React.useState();
React.useEffect(() => {
(async () => {
let permissionResult = await Location.requestForegroundPermissionsAsync();
setPermission(permissionResult.status);
})();
}, []);
return (
<View style={styles.container}>
<Text>Open up App.js to start working on your app!</Text>
<Text>{permission}</Text>
<StatusBar style="auto" />
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
});
app.json
{
"expo": {
"name": "location-crash",
"slug": "location-crash",
"version": "1.0.0",
"orientation": "portrait",
"icon": "./assets/icon.png",
"splash": {
"image": "./assets/splash.png",
"resizeMode": "contain",
"backgroundColor": "#ffffff"
},
"updates": {
"fallbackToCacheTimeout": 0
},
"assetBundlePatterns": [
"**/*"
],
"ios": {
"supportsTablet": true
},
"android": {
"adaptiveIcon": {
"foregroundImage": "./assets/adaptive-icon.png",
"backgroundColor": "#FFFFFF"
},
"permissions": [
"ACCESS_COARSE_LOCATION",
"ACCESS_FINE_LOCATION"
],
"package": "com.repro.locationcrash"
},
"web": {
"favicon": "./assets/favicon.png"
}
}
}
package.json
{
"main": "node_modules/expo/AppEntry.js",
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},
"dependencies": {
"expo": "~42.0.1",
"expo-location": "~12.1.2",
"expo-status-bar": "~1.0.4",
"react": "16.13.1",
"react-dom": "16.13.1",
"react-native": "https://github.com/expo/react-native/archive/sdk-42.0.0.tar.gz",
"react-native-web": "~0.13.12"
},
"devDependencies": {
"@babel/core": "^7.9.0"
},
"private": true
}
eas.json
{
"builds": {
"android": {
"apk": {
"workflow": "managed",
"distribution": "internal",
"buildType": "apk"
}
}
}
}
Let me know if there’s anything I can do to help reproduce on your end.
