iOS Back button on centre of window using Titanium - titanium

Question

I am trying to place a back button at centre of window. I am able to achieve the same using image view. However navigation to previous windows except for the very last are failing.
Lets say I have traversed three windows A->B->C. From window 'C' the button takes me to window 'B'. But from window 'B' click of same button evokes no response (ideally it should have taken me to window 'A')
The code I have used are as following
{
var imgView = Ti.UI.createImageView({
top:'50%',
left : 0,
image : "icons/back.png"
});
imgView.addEventListener('click', function(){
self.close();
});
}

Answer 1

Add the above line in your each file which containing the new window, since you're opening new windows using url method.
var currentWindow = Ti.UI.currentWindow;
Then close the window as follows
imgView.addEventListener('click', function(){
currentWindow.close();
});
This will close the current window, since currentWindow represents the active window
I'll add the working Example :
app.js
var win = Ti.UI.createWindow({
backgroundColor : 'white'
});
var back = Ti.UI.createButton({
title : 'To win1 ',
width : '70%'
});
back.addEventListener('click', function(){
var win1 = Ti.UI.createWindow({
url : 'win1.js',
backgroundColor : 'white',
layout : 'vertical'
});
win1.open();
});
win.add(back);
win.open();
win1.js
var self = Ti.UI.currentWindow;
var back = Ti.UI.createButton({
title : 'Back to home',
top : 20,
width : '70%'
});
var next = Ti.UI.createButton({
title : 'To win2',
top : 20,
width : '70%'
});
self.add(back);
self.add(next);
back.addEventListener('click',function(){
self.close();
});
next.addEventListener('click', function(){
var win2 = Ti.UI.createWindow({
url : 'win2.js',
backgroundColor : 'white',
layout : 'vertical'
});
win2.open();
});
win2.js
var self = Ti.UI.currentWindow;
var back = Ti.UI.createButton({
title : 'Back to win1',
top : 20,
width : '70%'
});
self.add(back);
back.addEventListener('click',function(){
self.close();
});