条码扫描仪立即关闭，弹出窗口不显示

Question

我正在尝试使用 controller.js 中的代码在单击按钮时显示警告框：

angular.module('app.controllers', ['ionic','ngCordova'])

.controller('page1Ctrl', ['$scope', '$stateParams', '$cordovaBarcodeScanner'

函数（$scope、$stateParams、$cordovaBarcodeScanner）{

document.addEventListener("deviceready", function () {

$scope.scanCode = function()
{
   $cordovaBarcodeScanner.scan(
   function (result) {
      alert("We got a barcode\n" +
            "Result: " + result.text + "\n" +
            "Format: " + result.format + "\n" +
            "Cancelled: " + result.cancelled);

  }, 
   function (error) 
   {
      alert("Scanning failed: " + error);
   }
 );
}

});

}])

但是当我运行设备中的应用程序时，扫描仪工作但显示详细信息的警告框不显示，并且扫描仪在检测到条形码后立即关闭。可能是什么问题？

Answer 1

尝试按照Documentation

中提到的方法

$cordovaBarcodeScanner
  .scan()
  .then(function(barcodeData) {
    // Success! Barcode data is here
    alert("We got a barcode\n" +
        "Result: " + barcodeData.text + "\n" +
        "Format: " + barcodeData.format + "\n" +
        "Cancelled: " + barcodeData.cancelled);
  }, function(error) {
    // An error occurred
  });

此致。

条码扫描仪立即关闭，弹出窗口不显示

barcode scanner closes at once, popup doesnt show

barcode-scanner

angularjs

ionic-framework

cordova-plugins