add 'hasPackageInstalled' for android

actionscript/src/com/freshplanet/ane/AirCapabilities/AirCapabilities.as

@@ -397,6 +397,17 @@ import com.freshplanet.ane.AirCapabilities.events.AirCapabilitiesOpenURLEvent;
 			_extContext.call("switchToPortrait");
 		}
 
+		/**
+		 * Android only!
+		 */
+		public function hasPackageInstalled(packageName:String):Boolean
+		{
+			if(Capabilities.manufacturer.indexOf("Android") < 0)
+				return false;
+
+			return _extContext.call("hasPackageInstalled", packageName);
+		}
+
 		/**
 		 * MacOS only!
 		 */

android/lib/src/main/java/com/freshplanet/ane/AirCapabilities/AirCapabilitiesExtensionContext.java

@@ -27,6 +27,7 @@
 import com.freshplanet.ane.AirCapabilities.functions.GetDeviceModelFunction;
 import com.freshplanet.ane.AirCapabilities.functions.GetOSVersionFunction;
 import com.freshplanet.ane.AirCapabilities.functions.HasInstagramFunction;
+import com.freshplanet.ane.AirCapabilities.functions.HasPackageInstalledFunction;
 import com.freshplanet.ane.AirCapabilities.functions.HasSMSFunction;
 import com.freshplanet.ane.AirCapabilities.functions.HasTwitterFunction;
 import com.freshplanet.ane.AirCapabilities.functions.LogFunction;
@@ -92,6 +93,7 @@ public Map<String, FREFunction> getFunctions()
         functionMap.put("postPictureOnInstagram", new PostPictureOnInstagramFunction());
         functionMap.put("getCurrentMem", new GetCurrentMemFunction());
         functionMap.put("openAdSettings", new OpenAdSettingsFunction());
+		functionMap.put("hasPackageInstalled", new HasPackageInstalledFunction());
 
 		return functionMap;	
 	}

android/lib/src/main/java/com/freshplanet/ane/AirCapabilities/functions/HasPackageInstalledFunction.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 FreshPlanet
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.freshplanet.ane.AirCapabilities.functions;
+
+import android.content.pm.PackageManager;
+
+import com.adobe.fre.FREContext;
+import com.adobe.fre.FREFunction;
+import com.adobe.fre.FREObject;
+
+public class HasPackageInstalledFunction implements FREFunction
+{
+	@Override
+	public FREObject call(FREContext context, FREObject[] args)
+	{
+		FREObject result = null;
+
+		try
+		{
+			String packageName = args[0].getAsString();
+			try {
+				context.getActivity().getPackageManager().getPackageGids(packageName);
+				result = FREObject.newObject(true);
+			} catch (PackageManager.NameNotFoundException e) {
+				result = FREObject.newObject(false);
+			}
+		}
+		catch (Exception e)
+		{
+			e.printStackTrace();
+		}
+
+		return result;
+	}
+}