Ibm Worklight have samples that calling the native app, but that was created in worklight itself eg: module_09_1_Android_CombiningNativeAndWebPages in this sample in android
Use this function in your applicaton. By default Cordova plugin is installed in worklight application. you need to just call its functionality
function takePicture() {
navigator.camera.getPicture(
function(data) {
var img = dom.byId('camera_image');
img.style.visibility = "visible";
img.style.display = "block";
//img.src = "data:image/jpeg;base64," + data;
img.src = data;
dom.byId('camera_status').innerHTML = "Success";
},
function(e) {
console.log("Error getting picture: " + e);
dom.byId('camera_status').innerHTML = e;
dom.byId('camera_image').style.display = "none";
},
{ quality: 50, destinationType: navigator.camera.DestinationType.FILE_URI, sourceType : navigator.camera.PictureSourceType.CAMERA});
};