@angular-native/plugin-barcode

Reading a barcode with the camera. AVCaptureMetadataOutput decodes on the device, with no model to download and no service behind it.

It comes two ways. scan() opens full screen and closes when something is read. And there is a live preview you can put in your own layout, which is the one view any plugin in this project contributes — see a view a plugin brings:

<an-custom [view]="'barcode-preview'" [style.height]="'260'" [borderRadius]="16" />

The preview emits what it reads on the module event channel rather than resolving a promise, because a preview produces none or a hundred and a promise carries one.

npm install @angular-native/plugin-barcode

Where it works

iOS · iPadOS	macOS	watchOS	Android
✓	✓	—	—

Where it does not, the reason is the plugin’s own and the build says it rather than the first call at run time:

watchOS — a watch has no camera. AVFoundation’s capture classes are not in the watchOS SDK at all.

Android — Android ships no barcode API. The usual answer is ML Kit, which lives in Google Play Services and is a Gradle dependency; this toolchain has no Gradle, and bundling the Play-backed variant would make an app that cannot be installed on a device without Play Services. The alternative is embedding a decoder such as ZXing in the shell, which is a decision about what every angular-native app carries and not one a plugin can make on its own.

The API

Method	Returns
available()	Promise<boolean>
scan(options: ScanOptions = {})	Promise<Barcode>	Opens the scanner and resolves with the first thing it reads.

Every method is a call across the bridge, so every one returns a promise, and every failure is a rejection that names what was asked for. See Native modules for what crosses and what a rejection looks like.