addListeners problem

[linuxyf]

there is a togglefield in componentView's item, i want to listen the change event of togglefield control. if i do this as following:

{							xtype: 'togglefield',
							listeners: {
		        				change: function (me, thumb, value, options) {
		        					
		        					if(value == 1) {
		        						...
		        					}
		        					else {
		        						...
		        					}
		        				}
							 }

the change event of first item in componentView can be catched when i tap the toggle of first item. but the change event of other items in componentView can't be catched. Why?

So i want to add a listener for togglefield in initialize function, how to write the addListeners code??

Ext.define('ShopSystem.view.SyohinZanListItem', {
    extend: 'Ext.dataview.DataItem',
    ......
     initialize: function(){    	    	this.down('title').setTitle(this._syohin_name.getHtml());
    	var s2 = this.down('togglefield');
    	s2.addListener(.....)   ???

[linuxyf]

i get it, thanks everyone.

    	var s2 = this.down('togglefield');    	s2.on({
    		change: this.onToggleChanged
    	});