[Bug]: Android app crashes - createPack() throwing error while downloading and app crashes on getPacks() #4230

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1. nv-mahesh

   added

   bug 🪲Something isn't workingSomething isn't working

   on Jun 17, 2026
2. github-actions

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   error-in-code

   on Jun 17, 2026
3. github-actions

   closed this as completedon Jun 17, 2026
4. github-actions

   added

   reopen-on-code-fixed

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   error-in-code

   on Jun 17, 2026
5. github-actions

   reopened this on Jun 17, 2026
6. github-actions

   removed

   reopen-on-code-fixed

   on Jun 17, 2026
7. nv-mahesh

   changed the title [-][Bug]: Android app crashes on getPacks() and createPack() throwing error while downloading[/-] [+][Bug]: Android app crashes - createPack() throwing error while downloading and app crashes on getPacks()[/+] on Jun 17, 2026
8. mfazekas commented on Jul 5, 2026

   

   mfazekas

   on Jul 5, 2026

   Last edited by mfazekas

   Contributor

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   Thanks for the report. We tried to reproduce this on Android and were not able to trigger the crash on the current version.

   What we tested (Android emulator, @rnmapbox/maps current main (d4452ff), using your exact params — StyleURL.Street, bounds [[73.90, 18.45], [74.05, 18.55]], minZoom: 10, maxZoom: 15):

   1. Happy path: createPack() downloaded all resources to 100% (complete), no error. getPacks() afterwards returned the pack fine, no crash.
   2. Interrupted download: we started a large uncached region and cut the network mid-download. The createPack error callback fired (this matches your "createPack throws an error during download"), leaving a partial/errored region in the tile store.
   3. getPacks() on that partial/errored pack: returned the packs cleanly — no crash, app stayed alive.

   A couple of things worth noting:

   • A failed/aborted download surfacing via the errorListener callback is expected — that's the third argument to createPack, it's how download errors are reported. It isn't itself the crash.
   • We could not reproduce a crash in getPacks() even with a partially-downloaded pack present.

   You're on 10.1.45, which is quite old. Could you:

   1. Upgrade to the latest 10.3.x and re-test — there's a good chance this is already resolved.
   2. If it still crashes, we really need the actual error and crash trace to diagnose, since neither is in the report:
      • the error object passed to your errorListener (or logged by your console.error('Failed to download region', err))
      • the full native crash stacktrace from adb logcat at the moment getPacks() crashes.

   Reproducer we used, in case you want to check it against your setup:

   Issue4230Repro.tsx

   import { useState } from 'react';
   import Mapbox, { MapView, Camera, offlineManager } from '@rnmapbox/maps';
   import { Button, ScrollView, Text, View } from 'react-native';
   
   const RegionId = 'offline-region-1';
   const bounds: [[number, number], [number, number]] = [
     [73.9, 18.45], // southwest [lng, lat]
     [74.05, 18.55], // northeast [lng, lat]
   ];
   
   export default function Issue4230Repro() {
     const [log, setLog] = useState<string[]>([]);
     const append = (line: string) => {
       console.log('[4230]', line);
       setLog((l) => [...l, line]);
     };
   
     const createPack = async () => {
       try {
         append('createPack: start');
         await offlineManager.createPack(
           {
             name: RegionId,
             styleURL: Mapbox.StyleURL.Street,
             bounds,
             minZoom: 10,
             maxZoom: 15,
             metadata: { regionId: RegionId, version: '1.0' },
           },
           (_r, status) => append(`progress: ${JSON.stringify(status)}`),
           (err) => append(`ERROR callback: ${JSON.stringify(err)}`),
         );
         append('createPack: resolved');
       } catch (e) {
         append(`createPack THREW: ${String(e)}`);
       }
     };
   
     const getPacks = async () => {
       try {
         append('getPacks: start');
         const packs = await offlineManager.getPacks();
         append(`getPacks: got ${packs.length} pack(s)`);
       } catch (e) {
         append(`getPacks THREW: ${String(e)}`);
       }
     };
   
     return (
       <View style={{ flex: 1 }}>
         <Button title="1. Create Pack" onPress={createPack} />
         <Button title="2. Get Packs" onPress={getPacks} />
         <Button title="Reset DB" onPress={() => offlineManager.resetDatabase()} />
         <ScrollView style={{ maxHeight: 220 }}>
           {log.map((l, i) => (
             <Text key={i} style={{ fontSize: 11 }}>{l}</Text>
           ))}
         </ScrollView>
         <MapView style={{ flex: 1 }} styleURL={Mapbox.StyleURL.Street}>
           <Camera zoomLevel={10} centerCoordinate={[73.97, 18.5]} />
         </MapView>
       </View>
     );
   }
9. mfazekas

   added

   Needs: Author Feedback

   on Jul 5, 2026
10. mfazekas commented on Oct 12, 2026

    

    mfazekas

    on Oct 12, 2026

    Contributor

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    Closing as we couldn't reproduce this on current main and haven't heard back. If you still see the crash on the latest release, please reopen with a standalone reproducer.
11. mfazekas

    closed this as not plannedon Oct 12, 2026