Looking for some help on using this library

[jlaske]

I am looking to get some help on getting this to work.

I can see logs in log cat that say my scanner is enabled but the hardware trigger does not seem to work consistently. When it does work, the onData callback never triggers.

Is there anyway to get additional instructions on how to use this library?

I am currently using a MC3300 Zebra Scanner and have added this project as a dependency.

Any help on this would be appreciated.

Here are some logs that i see:

On initial startup I get a scanner exception right off the bat.

12-03 16:15:13.013 20662-20702/com.nativescannerprototype D/com.symbol.emdk.EMDKServiceConnection: The EMDK Service will be connected soon (asynchronus call)!
12-03 16:15:13.014 20662-20702/com.nativescannerprototype V/[BarcodeScanner]: MDKManager object request SUCCESS!
12-03 16:15:13.014 20662-20702/com.nativescannerprototype V/[BarcodeScanner]: enable
12-03 16:15:13.035 20662-20662/com.nativescannerprototype D/com.symbol.emdk.EMDKServiceConnection: The EMDK Service is now connected!
12-03 16:15:13.100 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: onOpened:
12-03 16:15:13.100 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: com.symbol.emdk.EMDKManager@b593464
12-03 16:15:13.100 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saving API stats...
12-03 16:15:13.103 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saved API stats...
12-03 16:15:13.157 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: com.symbol.emdk.barcode.BarcodeManager@8286605
12-03 16:15:13.158 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: getting scanner.
12-03 16:15:13.158 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: add data listener
12-03 16:15:13.158 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: add status listener
12-03 16:15:13.161 20662-20662/com.nativescannerprototype E/[BarcodeScanner]: initScanner error: com.symbol.emdk.barcode.ScannerException: Failure

I have to minimize then resume the app in order for it to initialize and even then the trigger is not enabled most times.

12-03 16:18:41.960 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: onHostPause
12-03 16:18:41.960 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: destroyScanner:
12-03 16:18:41.990 20662-20662/com.nativescannerprototype D/Scanner: scanner.release: isBTScanner: false
12-03 16:18:41.990 20662-20662/com.nativescannerprototype D/Scanner: scanner.release: isPluggableScanner: false
12-03 16:18:41.991 20662-20662/com.nativescannerprototype D/Scanner: scanner.release: isBTScanner: false
12-03 16:18:41.991 20662-20662/com.nativescannerprototype D/Scanner: scanner.release: isPluggableScanner: false
12-03 16:18:42.076 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saving API stats...
12-03 16:18:42.086 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saved API stats...
12-03 16:18:42.852 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: onHostResume: config: null
12-03 16:18:42.852 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: com.symbol.emdk.EMDKManager@b593464
12-03 16:18:42.852 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saving API stats...
12-03 16:18:42.859 20662-20662/com.nativescannerprototype D/com.symbol.emdk.Analytics: Saved API stats...
12-03 16:18:42.926 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: com.symbol.emdk.barcode.BarcodeManager@b739985
12-03 16:18:42.987 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: getting scanner.
12-03 16:18:42.988 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: add data listener
12-03 16:18:42.992 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: add status listener
12-03 16:18:42.997 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: enable scanner
12-03 16:18:42.998 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: creating opened event
12-03 16:18:42.998 20662-20662/com.nativescannerprototype V/[BarcodeScanner]: initScanner: dispatching event

[timhonders]

Can you post the code u are using to initialize the scanner

[jlaske]

Im doing something like this in the constructor of my component

constructor(props) {
super(props);
BarcodeScanner.init();
BarcodeScanner.enable();
}

I also have a button setup tied to BarcodeScanner.scan() and BarcodeScanner.read()
Something like this

scan() {
BarcodeScanner.scan() // or BarcodeScanner.read();
}

<TouchableOpacity
style={styles.submitButton}
onPress={() => this.scan()}>
Scan

At this point I expect the hardware trigger to be enabled.

I'm also unsure of Barcode.on(event, callback) method. Im assuming I need to call this or this gets called implicitly somewhere in order to trigger the onData callback, but am unsure about the event to pass in.

[timhonders]

If u try this:

`constructor(props) {
super(props);
BarcodeScanner.init();
}

componentDidMount() {
BarcodeScanner.on(BarcodeScannerEvent.BARCODE, (data) => {

});

BarcodeScanner.read({type:['qrcode', 'code128']});

}
`

[machship-mm]

@jlaske did @timhonders proposition work for you?

[jlaske]

@machship-mm I did not get a chance to try @timhonders proposition.
Unfortunately I have since moved on from this.