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[@capacitor/share] "Can't share while sharing is in progress" when sharing to the same app on Android

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
58/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
android, java
Domain
mobile

Research direction

Start with the Android SharePlugin implementation and trace share(), activityResult(), isPresenting, and handleOnNewIntent(), paying attention to how MainActivity is reused for ACTION_SEND. Reproduce the issue with the linked sample app, then verify that an incoming share resets the in-progress state and that subsequent shares succeed.

Written by the indexing model from the issue text.

Description

platform: android

Bug Report

Plugin(s)

@capacitor/share

Capacitor Version
💊   Capacitor Doctor  💊 

Latest Dependencies:

  @capacitor/cli: 7.4.3
  @capacitor/core: 7.4.3
  @capacitor/android: 7.4.3
  @capacitor/ios: 7.4.3

Installed Dependencies:

  @capacitor/ios: not installed
  @capacitor/cli: 7.4.3
  @capacitor/core: 7.4.3
  @capacitor/android: 7.4.3

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

Android

Current Behavior

In my app I have both outgoing + incoming share functionality. When I try to share anything to the same app, the plugin's Android implementation becomes stuck in some "in-progress" state, and subsequent share calls immediately fail with error:

Can't share while sharing is in progress
Expected Behavior

All subsequent shares from the app into same app work OK.

Code Reproduction

I've prepared reproduction repo - please check out https://github.com/dmitry-salnikov/capacitor-share-plugin-bug-reproduction

Other Technical Details

Android only, everything works OK on iOS.

Additional Context

The problem
  • Android tries to launch MainActivity with the ACTION_SEND intent.
  • Because launchMode="singleTask", Android doesn't create a new activity instance. Instead, it reuses the existing task and brings it to the front.
  • Since the activity never finishes (it's the same instance), activityResult() is never called.
  • This way, isPresenting flag isn't reset, and all subsequent calls to share() would throw error Can't share while sharing is in progress.
The solution

Handle incoming share intent in SharePlugin's code to reset isPresenting flag and resolve plugin call, e.g.:

@Override
protected void handleOnNewIntent(Intent intent) {
    if (isPresenting && intent != null && Intent.ACTION_SEND.equals(intent.getAction())) {
        PluginCall call = bridge.getSavedCall("activityResult");
        if (call != null) {
            call.resolve(new JSObject().put("activityType", ""));
        }
        isPresenting = false;
    }
}
Dominant language
Java
Stars
682
Forks
689
Avg merge
5d 11h
Merged PRs (30d)
3

Getting set up

First steps

  1. Read the whole issue, then the project's contributing guide.
  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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