條形碼掃描儀插件返回引用錯誤

Question

我想呼籲按鈕點擊條碼掃描功能，但它返回以下錯誤：

ReferenceError: cordova is not defined 
at ChildScope.$scope.scanBarcode (controllers.js:10) 
at fn (eval at compile (ionic.bundle.js:27643), <anonymous>:4:224) 
at ionic.bundle.js:65429 
at ChildScope.$eval (ionic.bundle.js:30400) 
at ChildScope.$apply (ionic.bundle.js:30500) 
at HTMLButtonElement.<anonymous> (ionic.bundle.js:65428) 
at defaultHandlerWrapper (ionic.bundle.js:16792) 
at HTMLButtonElement.eventHandler (ionic.bundle.js:16780) 
at triggerMouseEvent (ionic.bundle.js:2953) 
at tapClick (ionic.bundle.js:2942) 

，這裏是我的controller.js代碼：

angular.module('app.controllers', ['ionic', 'ngCordova']) 
.controller('page4Ctrl', ['$scope', '$stateParams', '$cordovaBarcodeScanner',function ($scope, $stateParams, $cordovaBarcodeScanner) { 
$scope.scanBarcode = function() 
{ 
    cordova.plugins.barcodeScanner.scan().then(function(imageData) { 
     alert(imageData.text); 
     console.log("Barcode Format -> " + imageData.format); 
     console.log("Cancelled -> " + imageData.cancelled); 
    }, function(error) { 
     console.log("An error happened -> " + error); 
    }); 
}; 

}]) 

和這裏的呼籲app.js之前index.html中插入科爾多瓦/ ngcordova代碼：

<script src="lib/ionic/js/ionic.bundle.js"></script> 

<script src="cordova.js"></script> 
<script src="lib/ngCordova/dist/ng-cordova.js"></script> 

這可能是個問題？

Answer 1

你將不得不改變實施條碼掃描器

$scope.scanBarcode = function(){ 
    $cordovaBarcodeScanner.scan().then(function(imageData) { 
     alert(imageData.text); 
     console.log("Barcode Format -> " + imageData.format); 
     console.log("Cancelled -> " + imageData.cancelled); 
    }, function(error) { 
     console.log("An error happened -> " + error); 
    }); 
}; 

如您在控制器注入$cordovaBarcodeScanner。 cordova.plugins.barcodeScanner將無法​​直接訪問。

Ref。 ：http://ngcordova.com/docs/plugins/barcodeScanner/

問候。