feat: Always download CodeScanner model instead of relying on Google Play Services

[mrousavy]

What

Instead of using RegEx replaces, this change adds a new prop to the build.gradle setup of VisionCamera: VisionCamera_enableCodeScanner.

VisionCamera_enableCodeScanner can be configured in your app's gradle.properties file:

react-native-vision-camera/package/example/android/gradle.properties

Lines 44 to 45 in fdbc2db

	# Can be set to true to include the full 2.4 MB MLKit dependency
	#VisionCamera_enableCodeScanner=true

• When VisionCamera_enableCodeScanner is set to false (the default), the Google Play Services MLKit library will be used which only includes the code for Barcode detection but not the 2.4 MB model. On phones that support Google Play Services, the model can be dynamically downloaded once you use a CodeScanner (useCodeScanner).
• When VisionCamera_enableCodeScanner is set to true, VisionCamera will include the full MLKit dependency instead of the dynamic google play services one, and will bundle the 2.4 MB model into your app. This will work on every Android phone then, even without Google Play Services.

react-native-vision-camera/package/android/build.gradle

Lines 168 to 175 in fdbc2db

	if (enableCodeScanner) {
	// User enabled code-scanner, so we bundle the 2.4 MB model in the app.
	implementation 'com.google.mlkit:barcode-scanning:17.2.0'
	} else {
	// Fall-back to just including the code for the CodeScanner to avoid the 2.4 MB bundle in the app.
	// On devices with Google Play Services, this can also download the CodeScanner model on-demand.
	implementation "com.google.android.gms:play-services-mlkit-barcode-scanning:18.3.0"
	}

Changes

Tested on

Related issues

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Name	Status	Preview	Comments	Updated (UTC)
react-native-vision-camera	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 8, 2024 0:14am

[kyjus25]

v3.7.0 works great! Thank you again!

[mrousavy]

Awesome thanks for confirming!