diff --git a/src/android/startApp.java b/src/android/startApp.java
index e947e45..adb2d4f 100644
--- a/src/android/startApp.java
+++ b/src/android/startApp.java
@@ -25,6 +25,8 @@ import org.json.JSONException;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.ComponentName;
+import android.content.pm.PackageManager;
 
 /**
  * This class provides access to vibration on the device.
@@ -34,8 +36,7 @@ public class startApp extends CordovaPlugin {
     /**
      * Constructor.
      */
-    public startApp() {
-    }
+    public startApp() { }
 
     /**
      * Executes the request and returns PluginResult.
@@ -46,37 +47,57 @@ public class startApp extends CordovaPlugin {
      * @return                  True when the action was valid, false otherwise.
      */
     public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
-        if (action.equals("startapp")) {
-            this.startApp(args.getString(0));
+        if (action.equals("start")) {
+            this.start(args, callbackContext);
         }
-        else {
-            return false;
-        }
-
-        // Only alert and confirm are async.
-        callbackContext.success();
-        return true;
+		else if(action.equals("check")) {
+			this.check(
+				args.getString(0), 
+				callbackContext,
+				this.cordova.getActivity().getApplicationContext()
+			);
+		}
+		
+		return true;
     }
 
     //--------------------------------------------------------------------------
     // LOCAL METHODS
     //--------------------------------------------------------------------------
-
-    
     /**
      * startApp
      */
-    public void startApp(String component) {
-    	Intent LaunchIntent = this.cordova.getActivity().getPackageManager().getLaunchIntentForPackage(component);
-    	/**
-    	 * If you want to pass parameters:
-    	 */
-    	/**
-    	ComponentName comp = new ComponentName("com.component.name", "com.component.name.MainActivity");
-    	LaunchIntent.setComponent(comp);
-    	LaunchIntent.putExtra("product_id", 102);
-    	*/
-    	
-    	this.cordova.getActivity().startActivity(LaunchIntent);
+    public void start(JSONArray args, CallbackContext callback) {
+		// args.getString(0) - com name
+		// args.getString(1) - activity
+		// args.getString(2) - key
+		// args.getString(3) - value
+		try {
+			Intent LaunchIntent = this.cordova.getActivity().getPackageManager().getLaunchIntentForPackage(args.getString(0));
+			
+			if(args.length() > 3) {
+				ComponentName comp = new ComponentName(args.getString(0), args.getString(1));
+				LaunchIntent.setComponent(comp);
+				LaunchIntent.putExtra(args.getString(2), args.getString(3));
+			}
+			
+			this.cordova.getActivity().startActivity(LaunchIntent);
+			callback.success();
+		} catch (Exception e) {
+			callback.error(e.toString());
+        }
     }
+
+    /**
+     * checkApp
+     */	 
+	public void check(String component, CallbackContext callback, Context context) {
+		PackageManager pm = context.getPackageManager();
+		try {
+			pm.getPackageInfo(component, PackageManager.GET_ACTIVITIES);
+			callback.success();
+		} catch (Exception e) {
+			callback.error(e.toString());
+		}
+	}
 }
diff --git a/test/main.js b/test/main.js
index e8d8d1a..b5d87c9 100644
--- a/test/main.js
+++ b/test/main.js
@@ -21,5 +21,38 @@
 
 
 function init() {
-	navigator.startApp('com.example.hello');
+	/**
+	 * check the application is installed
+	 */
+	navigator.startApp.check('com.teaway.teamenu', function(message) { /* success */
+		console.log(message); // => OK
+	}, 
+	function(error) { /* error */
+		console.log('47', error);
+	});
+	
+	/**
+	 * start application without parameters
+	 */
+	navigator.startApp.start('com.teaway.teamenu', function(message) { /* success */
+		console.log(message); // => OK
+	}, 
+	function(error) { /* error */
+		console.log('47', error);
+	});
+	
+	/**
+	 * start application with parameters
+	 */
+	navigator.startApp.start([
+		'com.teaway.teamenu', // applucation
+		'com.teaway.teamenu.MainActivity', // activity
+		'product_id', // key
+		'102' // value
+	], function(message) { /* success */
+		console.log(message); // => OK
+	}, 
+	function(error) { /* error */
+		console.log('47', error);
+	});
 }
diff --git a/www/startApp.js b/www/startApp.js
index bf1ab63..e92eda2 100644
--- a/www/startApp.js
+++ b/www/startApp.js
@@ -1,4 +1,4 @@
-/*
+cordova.define("org.apache.cordova.startapp.startapp", function(require, exports, module) { /*
  *
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
@@ -22,12 +22,17 @@
 var exec = require('cordova/exec');
 var platform = require('cordova/platform');
 
-
 /** Open a native alert dialog, with a customizable title and button text.
  *
  * @param {String} message              app name
  * @param {Function} completeCallback   The callback that is called when open app
  */
-module.exports = function(message, completeCallback) {
-	exec(completeCallback, null, "startApp", "startapp", [message]);
-}
\ No newline at end of file
+module.exports = {
+	check: function(message, completeCallback, errorCallback) {
+		exec(completeCallback, errorCallback, "startApp", "check", [message]);
+	},
+	start: function(message, completeCallback, errorCallback) {
+		exec(completeCallback, errorCallback, "startApp", "start", (typeof message === 'string') ? [message] : message);
+	}	
+}
+});