Map crashing for android

Hello,

Titanium Studio, build: 3.4.1

Titanium SDK: 3.5.0

ti.map : 2.2.2

I am trying to implement map in my app with above mentioned things. I've followed the steps mentioned here Google_Maps_v2 & generated the api key. Added the following code in tiapp.xml

<manifest>
            <application android:theme="@style/Theme.AppCompat.Light.DarkActionBar"/>
            <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="19"/>
            <uses-permission android:name="android.permission.INTERNET"/>
            <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
            <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
            <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
            <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
            <uses-feature android:glEsVersion="0x00020000" android:required="true"/>
            <uses-permission android:name="<my.app.id>.permission.MAPS_RECEIVE"/>
            <permission
                android:name="<my.app.id>.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
            <application>
                <meta-data
                    android:name="com.google.android.maps.v2.API_KEY" android:value="<API_KEY>"/>
            </application>
        </manifest>

I've a button click on index.js when opens secondwin.js & loads the map this works perfectly fine. But when I close secondwin.js or hit a back button the app crashes. I've attached my code below.

index.js

function doadd(evt){
    Alloy.createController('secondwin').getView().open();
}

secondwin.js

var Map = require('ti.map');
var mapview = Map.createView({mapType:Map.NORMAL_TYPE});
 
$.secondwin.add(mapview);

Please help me with the map

Thanks,