Appcelerator MapView showAnnotations Android

index.js

var returnData; // returned array of location data

if (OS_IOS) {

    $.MapView.showAnnotations(annotationArray);

}

if (OS_ANDROID) {

    var largestLat = Math.max.apply(Math, returnData.map(function(o) {
        return o.business.loc[1];
    }));

    var smallestLat = Math.min.apply(Math, returnData.map(function(o) {
        return o.business.loc[1];
    }));

    var largestLon = Math.max.apply(Math, returnData.map(function(o) {
        return o.business.loc[0];
    }));

    var smallestLon = Math.min.apply(Math, returnData.map(function(o) {
        return o.business.loc[0];
    }));

    var latDelta = (largestLat - smallestLat);
    var lonDelta = (largestLon - smallestLon);

    $.MapView.setRegion({
        latitude: Ti.App.cords.latitude,
        longitude: Ti.App.cords.longitude,
        latitudeDelta: latDelta,
        longitudeDelta: lonDelta,
        //bearing : Ti.App.cords.heading,
        tilt: 60
    });

}