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Capacitor.Plugins.App.getInfo sometimes does not complete (resolve/reject)

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
42/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
mobile-dev

Research direction

Start with AppPlugin.java and trace how getInfo resolves through postMessage on the androidBridge to JavaScript. Run the linked capacitor-android-reload reproduction and compare Android devices and emulators where the promise stops completing. Done means getInfo consistently resolves or rejects during the reload scenario.

Written by the indexing model from the issue text.

Description

needs reproduction platform: android

Bug Report

Plugin(s)

App

Capacitor Version
💊   Capacitor Doctor  💊 

Latest Dependencies:

  @capacitor/cli: 8.1.0
  @capacitor/core: 8.1.0
  @capacitor/android: 8.1.0
  @capacitor/ios: 8.1.0

Installed Dependencies:

  @capacitor/ios: not installed
  @capacitor/cli: 8.1.0
  @capacitor/android: 8.1.0
  @capacitor/core: 8.1.0

[success] Android looking great! 👌
Platform(s)

Android

On physical devices, I was able to reproduce this on a Pixel 2XL running Android 11, but not on a Pixel 8A or Nothing Phone 1 running Android 14.

However, on Android Studio emulators, I was able to reproduce it on emulators running Android 13, 14 and 15.

Current Behavior

Calling Capacitor.Plugins.App.getInfo() during the DOMContentLoaded event of the index page sometimes does not resolve (nor reject), the promise simply never completes at all.

Expected Behavior

The getInfo function should either resolve or reject.

Code Reproduction

https://github.com/Mottschi/capacitor-android-reload

This example app will automatically reload until the issue is encountered, incrementing a counter to show progress. When the bug occurs, the reloads and counter incrementation will simply stop. Observed frequency the issue occurred was different depending on the device/emulator used, but generally, on the devices where it occurs, it happens the first time within about the first 100 reloads.

Other Technical Details

We did some debugging when we encountered this in our app. From what we were able to tell, the getInfo method in AppPlugin.java is called and resolves normally in these cases, but the result seems to be getting lost when being sent with postMessage through the androidBridge to JS.

Additional Context
Dominant language
Java
Stars
678
Forks
688
Avg merge
5d 11h
Merged PRs (30d)
3

Getting set up

First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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