Sample code to initialize the scanner with this library

[bluefletch]

Sample code to initialize the scanner with this library

[blakebyrnes]

The example in the readme should be all you need. Let me know if you've seen those and still aren't sure what to do.

[TheRobBrennan]

Hi Blake,

Thanks for your prompt reply! The part I’m confused on is this example:

document.addEventListener("deviceready", function(){
...
captuvo.registerScannerCallback(function(barcode){

       console.log("Barcode scanned: " + barcode);

       //TODO: handle barcode/label type
   });
   //This function will send the first readable track
   captuvo.registerMagstripeCallback(function(track){
        //track 1 uses carets as dividers (NOTE: won't work if track 2 is read)
        if (track.indexOf("%B") == 0) {
          track = track.split('^');

          var cc = {
             number : track[0].substr(2), //strip leading %B
             name : track[1].trim(),
             expr : '20' + track[2].substr(0,2) + '-' + track[2].substr(2,2)
          };
        } else {
          //handle track 2
        }

   });

Where does the device itself - captuvo - get defined/initialized? I’m curious where that part of the code is.

On Jan 26, 2015, at 7:34 PM, Blake Byrnes [email protected] wrote:

The example in the readme should be all you need. Let me know if you've seen those and still aren't sure what to do.

—
Reply to this email directly or view it on GitHub #1 (comment).

[blakebyrnes]

Hi Rob,
When you call captivo.registerScannerCallback, it will activate the hardware under the covers. You should not need to do anything else. Hope that answers your question!
Blake

Sent from my iPhone

On Jan 26, 2015, at 8:36 PTheRobBrennan [email protected] wrote:

Hi Blake,

Thanks for your prompt reply! The part I’m confused on is this example:

document.addEventListener("deviceready", function(){
...
captuvo.registerScannerCallback(function(barcode){

console.log("Barcode scanned: " + barcode);

//TODO: handle barcode/label type
});
//This function will send the first readable track
captuvo.registerMagstripeCallback(function(track){
//track 1 uses carets as dividers (NOTE: won't work if track 2 is read)
if (track.indexOf("%B") == 0) {
track = track.split('^');

var cc = {
number : track[0].substr(2), //strip leading %B
name : track[1].trim(),
expr : '20' + track[2].substr(0,2) + '-' + track[2].substr(2,2)
};
} else {
//handle track 2
}

});
Where does the device itself - captuvo - get defined/initialized? I’m curious where that part of the code is.

Rob Brennan | [email protected]
Phone [phone]
Skype The.Rob.Brennan
Web http://www.therobbrennan.com

On Jan 26, 2015, at 7:34 PM, Blake Byrnes [email protected] wrote:

The example in the readme should be all you need. Let me know if you've seen those and still aren't sure what to do.

—
Reply to this email directly or view it on GitHub #1 (comment).

—
Reply to this email directly or view it on GitHub.

[TheRobBrennan]

Oh yeah. For some reason I was thinking that there was an initialization phase that had to occur.

One final question (I promise) - were you able to get the callback to fire more than once? In a very simple app, I was able to get the callback to fire once, but it failed to run on subsequent scans of the same barcode. Any idea what I might be missing perhaps?

I really do appreciate your time on this. I love the plug-in; just want to make sure I'm using it correctly =)

document.addEventListener("deviceready", init, false);
var resultDiv;
function init() {
    resultDiv = document.querySelector("#results");
    // Honeywell SL42 scanner
    captuvo.registerScannerCallback(function(barcode){
        //console.log("Barcode scanned: " + barcode);
        resultDiv.innerHTML = "Barcode scanned: " + barcode;
        //TODO: handle barcode/label type
    });
}

[TheRobBrennan]

Solved! Figured it was best to just create a function and have it re-register for the callback:

document.addEventListener("deviceready", init, false);
var resultDiv;
var counter = 0;
function init() {
    resultDiv = document.querySelector("#results");
    prepareScannerToReceiveBarcodeData();
}
// Honeywell SL42
function prepareScannerToReceiveBarcodeData(){
    captuvo.registerScannerCallback(function(barcode){
        resultDiv.innerHTML = "Barcode scanned [" + counter + "]: " + barcode;
        counter++;    // ...just to prove that we're successfully calling back our function multiple times
        
        // TODO: handle barcode/label type
        /* Super secret processing */
        // Add the callback handler again
        prepareScannerToReceiveBarcodeData();
    }); 
}