科尔多瓦相机没有发射

Question

我尝试了很多方法并且在这里引用了很多问题，但我的相机仍未启动。请帮助我。我检查了清单并配置了xml文件。这里没有任何错误。任何人都可以为我提供Cordova相机的工作示例

<script>

var pictureSource;   
var destinationType; 
document.addEventListener("deviceready",onDeviceReady,false);

function onDeviceReady() {
    pictureSource=navigator.camera.PictureSourceType;
    destinationType=navigator.camera.DestinationType;
}


function onPhotoDataSuccess(imageData) {

  var smallImage = document.getElementById('smallImage');

  smallImage.style.display = 'block';

  smallImage.src = "data:image/jpeg;base64," + imageData;
}
function onPhotoURISuccess(imageURI) {

  var largeImage = document.getElementById('largeImage');

  largeImage.style.display = 'block';

  largeImage.src = imageURI;
}


function capturePhoto() {
    alert("varun");
   navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
    destinationType: destinationType.DATA_URL,
    sourceType: Camera.PictureSourceType.CAMERA });
}

function onFail(message) {
  alert('Failed because: ' + message);
}

</script>