Change plugin initialize

src/android/com/cocodin/barcodescan/plugin/BarcodeScanChainway.java

@@ -20,11 +20,10 @@ public class BarcodeScanChainway extends CordovaPlugin {
   }
 
   public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) {
-    PluginHelper.init(cordova);
     Log.d(TAG, "execute: " + action);
     if (action.equalsIgnoreCase("scan")) {
       PluginHelper.scan(cordova, webView, args, callbackContext);
-    }else if(action.equalsIgnoreCase("getDevices")){
+    } else if (action.equalsIgnoreCase("getDevices")) {
       PluginHelper.getDevices(cordova, webView, args, callbackContext);
     }
     return true;

src/android/com/cocodin/barcodescan/plugin/PluginHelper.java

@@ -27,24 +27,22 @@ public class PluginHelper {
     private static Barcode2DWithSoft mInstance;
     private static JSONArray Devices = new JSONArray().put("camera").put("c4050");
 
-    public static void init(CordovaInterface cordova) {
-        Context context = cordova.getActivity();
-        try {
-            mInstance = Barcode2DWithSoft.getInstance();
-            if (mInstance != null) {
-                mInstance.open(context);
-            }
-        } catch (Exception e) {
-            Log.e(TAG, e.getMessage());
-        }
-    }
-
     public static void scan(CordovaInterface cordova, CordovaWebView webView, JSONArray args,
             final CallbackContext callbackContext) {
         String device = "";
         try {
             device = args.get(0).toString();
             if (device.equalsIgnoreCase(Devices.getString(1))) {
+                Context context = cordova.getActivity();
+                try {
+                    mInstance = Barcode2DWithSoft.getInstance();
+                    if (mInstance != null) {
+                        mInstance.open(context);
+                    }
+                } catch (Exception e) {
+                    Log.e(TAG, e.getMessage());
+                    callbackContext.sendPluginResult(new PluginResult(Status.ERROR, e.getMessage()));
+                }
                 mInstance.setScanCallback(new Barcode2DWithSoft.ScanCallback() {
                     @Override
                     public void onScanComplete(int i, int length, byte[] data) {
@@ -62,8 +60,7 @@ public class PluginHelper {
                             JSONObject result = new JSONObject().put("text", barCode);
                             callbackContext.sendPluginResult(new PluginResult(Status.OK, result));
                         } catch (JSONException e) {
-                            e.printStackTrace();
-                            callbackContext.sendPluginResult(new PluginResult(Status.ERROR, ""));
+                            callbackContext.sendPluginResult(new PluginResult(Status.ERROR, e.getMessage()));
                         }
                     }
                 });
@@ -81,7 +78,8 @@ public class PluginHelper {
         }
     }
 
-    public static void getDevices(CordovaInterface cordova, CordovaWebView webView, JSONArray args, final CallbackContext callbackContext){
+    public static void getDevices(CordovaInterface cordova, CordovaWebView webView, JSONArray args,
+            final CallbackContext callbackContext) {
         callbackContext.sendPluginResult(new PluginResult(Status.OK, Devices));
     }
 }