Only keyboard number Android

Hi i have this problem here
http://ift.tt/1jKYfz1



On ios works fine, but on android does not work .. someting change ??

i was using ST2.1 on iOS divice and now i am using ST 2.3 on Android device



my code



initialize: function() {

var me = this;

me.callParent();



var input = me.element.dom.getElementsByClassName("x-input-text")[0];

input.pattern="[0-9]*";

}



this works on ios with ST2.1