Error barcode scanning in ionic capacitor @capacitor-mlkit/barcode-scanning

Capacitor
1

Hi install @capacitor-mlkit/barcode-scanning and until yesterday it was working on my device Android. Today it stopped working but on other devices it works. Does anyone know what is going on or how I can fix this?

Versions
“@capacitor-mlkit/barcode-scanning”: “^5.0.2”,
“@capacitor/core”: “4.6.1”,
“@capacitor/android”: “3.4.3”,
“@capacitor/app”: “1.1.1”,

2

I’m surprised it was working as you have a mix of versions that are not compatible between them.

@capacitor-mlkit/barcode-scanning 5 should be used with Capacitor 5, but you are using @capacitor/core 4 and @capacitor/android 3.

You should update everything to version 5, including @capacitor/app.

1 Like
3

This problem was fixed today, see bug(barcode-scanning): `scan failed` on some Android devices · Issue #38 · capawesome-team/capacitor-mlkit · GitHub.

There are two new methods and a new listener:

/**
 * Check if the Google Barcode Scanner module is available.
 *
 * Only available on Android.
 *
 * @since 5.1.0
 */
isGoogleBarcodeScannerModuleAvailable(): Promise<IsGoogleBarcodeScannerModuleAvailableResult>;
/**
 * Install the Google Barcode Scanner module.
 * 
 * Attention: This only starts the installation.  The googleBarcodeScannerModuleInstallProgress event listener will notify you when the installation is complete.
 *
 * Only available on Android.
 *
 * @since 5.1.0
 */
installGoogleBarcodeScannerModule(): Promise<void>;
/**
 * Called when the Google Barcode Scanner module is installed.
 *
 * Available on Android.
 *
 * @since 5.1.0
 */
addListener(
  eventName: 'googleBarcodeScannerModuleInstallProgress',
  listenerFunc: (
    event: GoogleBarcodeScannerModuleInstallProgressEvent,
  ) => void,
): Promise<PluginListenerHandle> & PluginListenerHandle;

With those you can check if the Google Barcode Scanner module is available and install it if necessary.

4

Install failed without any message, just state 5, it is possible to install previously

5

@JLoveI Please take a look at this comment.