Change call functions

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

@@ -20,6 +20,7 @@ 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);

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

@@ -3,8 +3,6 @@ package com.cocodin.barcodescan.plugin;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
-import com.rscja.deviceapi.Barcode2D;
-import com.rscja.deviceapi.exception.ConfigurationException;
 import com.rscja.utility.StringUtility;
 import com.zebra.adc.decoder.Barcode2DWithSoft;
 
@@ -12,38 +10,35 @@ import org.apache.cordova.CordovaInterface;
 import org.apache.cordova.CordovaWebView;
 import org.apache.cordova.CallbackContext;
 import org.apache.cordova.PluginResult;
+import org.apache.cordova.PluginResult.Status;
 import org.json.JSONArray;
 
-import android.app.ProgressDialog;
 import android.content.Context;
-import android.os.AsyncTask;
-import android.os.Handler;
 import android.os.Message;
 import android.util.Log;
-import android.widget.Toast;
 
 public class PluginHelper {
 
     private static final String TAG = "PluginHelper";
     private static boolean threadStop = true;
-    private static String init_barcode;
     private static ExecutorService executor;
     private static Barcode2DWithSoft mInstance;
 
-    public static void scan(CordovaInterface cordova, CordovaWebView webView, JSONArray args,
-            final CallbackContext callbackContext) {
-
-        Context context = null;
+    public static void init(CordovaInterface cordova) {
+        Context context = cordova.getActivity();
 
         try {
-            context = cordova.getActivity();
             mInstance = Barcode2DWithSoft.getInstance();
+            if (mInstance != null) {
+                mInstance.open(context);
+            }
         } catch (Exception e) {
             Log.e(TAG, e.getMessage());
-            return;
+        }
     }
 
-        mInstance.open(context);
+    public static void scan(CordovaInterface cordova, CordovaWebView webView, JSONArray args,
+            final CallbackContext callbackContext) {
 
         mInstance.setScanCallback(new Barcode2DWithSoft.ScanCallback() {
             @Override
@@ -57,11 +52,10 @@ public class PluginHelper {
                 String barCode = new String(data);
                 barCode = barCode.replaceAll("\u0000", "");
                 Log.i(TAG, barCode);
-
                 mInstance.stopScan();
                 mInstance.close();
 
-                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, barCode));
+                callbackContext.sendPluginResult(new PluginResult(Status.OK, barCode));
             }
         });