Combining AngularJS with Bridgeit.js for a seamless mobile web app experience

Question

Combining AngularJS with Bridgeit.js for a seamless mobile web app experience

Currently, I'm working on an AngularJS web application that requires scanning a package from a mobile device. To achieve this functionality, I am utilizing BridgeIt.

Unfortunately, the code I've written in Angular doesn't seem to be functioning as expected.

HTML CODE:

<input id="inp" />
<button id="scan" ng-click="scan()"> Scan </button>

JS CODE:

// Inside Angular controller
$scope.scan = function() {
    bridgeit.scan('scan', 'window.scan');
}

// In global scope
window.scan = function(event) {
    alert(event.data);
}

Result: While BridgeIt successfully scans the QR/bar code, it is not returning the value as intended.

javascript angularjs mobile

Answer 1

Answer №1

Consider naming the function on the global scope and passing it to bridgeit.

Currently, you are merely assigning it to a property on the window named scan.

Ensure that the function is not nested inside any other functions or hidden from the global scope in any way.

Bridgeit executes a string on the webpage to invoke your function.

// within an angular controller
$scope.scan = function() {
    bridgeit.scan('scan', 'globalScan');
}

// on the global scope
window.scan = function globalScan(event) {
    alert(event.data);
}

Update:

Another helpful tip is to create your global function before including the bridgeit script.

The crucial point is that bridgeit interprets the string provided to it using an eval function and searches for it within the global scope.

Answer 2

Consider naming the function on the global scope and passing it to bridgeit.

Currently, you are merely assigning it to a property on the window named scan.

Ensure that the function is not nested inside any other functions or hidden from the global scope in any way.

Bridgeit executes a string on the webpage to invoke your function.

// within an angular controller
$scope.scan = function() {
    bridgeit.scan('scan', 'globalScan');
}

// on the global scope
window.scan = function globalScan(event) {
    alert(event.data);
}

Update:

Another helpful tip is to create your global function before including the bridgeit script.

The crucial point is that bridgeit interprets the string provided to it using an eval function and searches for it within the global scope.

Answer 3

Answer №2

Through many attempts, I discovered that the issue lies within the presence of hashtags in the URL.

Let's illustrate this with an example using the same code,

// Angular controller snippet
$scope.scan = funcction() {
    bridgeit.scan('scan', 'bridgeitCallback');
}

// Global scope function
window.bridgeitCallback = function(event) {
    alert(event.data);
}

Suppose there is a URL such as

http://stackoverflow.com/#question

with a scan field on the page. When scanning the barcode, it modifies the URL to something like,

http://stackoverflow.com/#c=scan%3Fid%3Dscan%26&r=http%3A//stackoverflow.com%23icemobilesx&o=enc%3Dbase64&h=%26h%3D%2523/question%26c%3DbridgeitCallback%26seq%3D1432552876578

To elaborate further,

http://stackoverflow.com/#c=scan{{some_uri_encode_characters}}/{{your_route,mine_is question}}/{{bridgeit_callback_method}}

This results in the inability to execute a successful POST callback.

The solution was enabling html5Mode in Angular, by adding the following line:

$locationProvider.html5Mode(true);

After doing so, everything functioned flawlessly.

Hoping this knowledge proves beneficial for future users.

Answer 4

Through many attempts, I discovered that the issue lies within the presence of hashtags in the URL.

Let's illustrate this with an example using the same code,

// Angular controller snippet
$scope.scan = funcction() {
    bridgeit.scan('scan', 'bridgeitCallback');
}

// Global scope function
window.bridgeitCallback = function(event) {
    alert(event.data);
}

Suppose there is a URL such as

http://stackoverflow.com/#question

with a scan field on the page. When scanning the barcode, it modifies the URL to something like,

http://stackoverflow.com/#c=scan%3Fid%3Dscan%26&r=http%3A//stackoverflow.com%23icemobilesx&o=enc%3Dbase64&h=%26h%3D%2523/question%26c%3DbridgeitCallback%26seq%3D1432552876578

To elaborate further,

http://stackoverflow.com/#c=scan{{some_uri_encode_characters}}/{{your_route,mine_is question}}/{{bridgeit_callback_method}}

This results in the inability to execute a successful POST callback.

The solution was enabling html5Mode in Angular, by adding the following line:

$locationProvider.html5Mode(true);

After doing so, everything functioned flawlessly.

Hoping this knowledge proves beneficial for future users.

Answer 5

Answer №3

Below is the snippet of code that I've integrated into my personal project:

function handleCallback(response)
{
    alert("Response received: " + JSON.stringify(response));
}

$(document).ready(function onDocumentReady()
{
    var button = $('#button');
    button[0].addEventListener('click', function () {
        bridgeit.scan('scan', 'handleCallback');
    });
});

This implementation is successfully functioning for me. I included it outside of Angular in my primary controller class.

You can easily extract the code within the document ready function and place it anywhere within your webpage.

Update:

Keep in mind that when returning from Bridgeit, most web browsers will refresh the page, resulting in loss of data. Consider utilizing local storage to retain any necessary information. The AmplifyJS library offers a user-friendly solution for this purpose.

Answer 6

Below is the snippet of code that I've integrated into my personal project:

function handleCallback(response)
{
    alert("Response received: " + JSON.stringify(response));
}

$(document).ready(function onDocumentReady()
{
    var button = $('#button');
    button[0].addEventListener('click', function () {
        bridgeit.scan('scan', 'handleCallback');
    });
});

This implementation is successfully functioning for me. I included it outside of Angular in my primary controller class.

You can easily extract the code within the document ready function and place it anywhere within your webpage.

Update:

Keep in mind that when returning from Bridgeit, most web browsers will refresh the page, resulting in loss of data. Consider utilizing local storage to retain any necessary information. The AmplifyJS library offers a user-friendly solution for this purpose.

Combining AngularJS with Bridgeit.js for a seamless mobile web app experience

Answer №1

Answer №2

Answer №3

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