Dynamic picker for Android

I am trying to make a dynamic picker which is working fine on iOS but on android there's no chance, here is my code

function showPicker(data, lbl, parentView) {
 
        var picker_view;
        var pickerHeight = 251;
        var slide_in = Titanium.UI.createAnimation({
            bottom : 0
        });
        var slide_out = Titanium.UI.createAnimation({
            bottom : -pickerHeight
        });
 
        picker_view = Titanium.UI.createView({
            height : pickerHeight,
            bottom : -pickerHeight,
            zIndex : 1000
        });
 
        var cancel = Titanium.UI.createButton({
            title : 'Cancel',
            style : Titanium.UI.iPhone.SystemButtonStyle.BORDERED
        });
 
        var done = Titanium.UI.createButton({
            title : 'Done',
            style : Titanium.UI.iPhone.SystemButtonStyle.DONE
        });
 
        var spacer = Titanium.UI.createButton({
            systemButton : Titanium.UI.iPhone.SystemButton.FLEXIBLE_SPACE
        });
 
        // var toolbar = Titanium.UI.iOS.createToolbar({
        // top : 0,
        // items : [cancel, spacer, done]
        // });
 
        var picker = Titanium.UI.createPicker({
            top : (2 * height_unit),
            selectionIndicator : true,
            width : win_width - (15 * width_unit),
        });
 
        if (lbl.id == "complaintype") {
            for (var i = 0; i < data.length; i++) {
                alert(i);
                picker.add(Ti.UI.createPickerRow({
 
                    title : claimantTypeData[i],
                    //_id : i + 1
                }));
            }
        }
 
        cancel.addEventListener('click', function() {
            picker_view.animate(slide_out);
        });
 
        done.addEventListener('click', function() {
            lbl.text = "  " + picker.getSelectedRow(0).title;
            lbl.color = 'black';
            picker_view.animate(slide_out);
 
            if (lbl.id == "sitecode") {
                siteid = picker.getSelectedRow(0)._id;
            } else {
                complaintype = picker.getSelectedRow(0)._id;
            }
 
        });
 
        lbl.addEventListener('focus', function() {
            picker_view.animate(slide_out);
        });
 
        parentView.addEventListener('click', function() {
 
            if (lbl.id == "sitecode") {
 
                if (siteCodeData.length == 0) {
 
                    activityIndicator.show();
                    getSiteCodeData(function(serverResponse) {
                        var length = serverResponse.length;
                        for (var i = 0; i < length; i++) {
                            siteCodeData.push(serverResponse[i].actName);
                            picker.add(Ti.UI.createPickerRow({
                                title : siteCodeData[i],
                                _id : JSON.parse(serverResponse[i].actCode)
                            }));
                        }
 
                        activityIndicator.hide();
 
                        //picker_view.add(toolbar);
                        picker_view.add(picker);
 
                        picker_view.animate(slide_in);
                    });
 
                } else {
                    //picker_view.add(toolbar);
                    picker_view.add(picker);
 
                    picker_view.animate(slide_in);
                }
            } else {
 
                //picker_view.add(toolbar);
                picker_view.add(picker);
 
                picker_view.animate(slide_in);
            }
        });
 
        return picker_view;
    }

//This function calls ws for getting site code and name.
    function getSiteCodeData(callback) {
 
        if (Titanium.Network.networkType != Titanium.Network.NETWORK_NONE) {
            var xhr = Titanium.Network.createHTTPClient({
                onload : function(e) {
                    callback(JSON.parse(this.responseText).acts);
                },
                onerror : function(e) {
                    activityIndicator.hide();
                    alert("Can not get server response");
                }
            });
 
            xhr.open('GET', 'http://89.237.149.36/ws/resources/shop/acts');
            xhr.send();
        } else {
            alert("No network avialable.");
        }
 
    }
 
    function pickerParentView(hintText) {
        var parentView = Titanium.UI.createView({
            height : 40,
            width : 280,
            borderRadius : 3,
            top : 20,
            backgroundColor : "#FFFFFF",
            layout : "horizontal",
        });
 
        var lbl = Titanium.UI.createLabel({
            text : hintText,
            color : 'gray',
            width : '75%',
            height : 40,
            left : 5,
            //right : 5,
            textAlign : 'center'
        });
 
        if (hintText == hintComplainType) {
            lbl.id = "complaintype";
        } else {
            lbl.id = "sitecode";
        }
 
        var drop_buttonParent = Titanium.UI.createView({
            width : '20%',
            height : 40
        });
 
        var drop_buttonChild = Titanium.UI.createImageView({
            image : "/images/button_downArrow.png",
            width : 15,
            height : 11
        });
 
        drop_buttonParent.add(drop_buttonChild);
 
        parentView.add(lbl);
        parentView.add(drop_buttonParent);
 
        return parentView;
    }
 
    var codeView = pickerParentView(hintSiteCode);
    formView.add(codeView);
    formView.add(showPicker(siteCodeData, codeView.children[0], codeView));