Sencha Touch 2 Navigation View responding very slowly - sencha-touch

Question

I am a newbie to Sencha Touch 2 . I am building an PhoneGap + Sencha Touch 2 application for Android 2.3.4 . I completed developing my application . While testing the app , i found out that the navigation view i used is responding very slow on tap of disclosure item.
I am using a list container view , list view and editor view . The code for them is given below .
The below piece of code works fine but on the tap of disclosure item the incident editor view is shown after 10 secs and i sometimes even don't know whether it was clicked or not .
So i need help in two things :
1.) When i click on disclosure item i should show masking to know that i clicked it atleast
2.) Or speed up the show of incident editor view
ListContainer View :
Ext.define('Sample.view.ListContainer', {
extend: 'Ext.NavigationView',
xtype:'listContainer',
id: 'idListContainer',
config: {
id:'idIncidentListContainer',
items:[
{
xtype:"incidentsList",
cls: "clsHeader"
}
]
}
});
List View:
Ext.define("Sample.view.IncidentsList", {
extend: "Ext.Panel",
xtype: 'incidentsList',
id: 'idIncidentList',
requires:[
'Ext.dataview.List',
'Ext.data.proxy.Memory',
'Ext.data.Store',
],
alias:'widget.incidentslist',
config: {
id: 'idIncidentList',
layout:'fit',
items: [
{
xtype: "toolbar",
docked: "top",
ui:'light',
id:"idHeaderTwo",
cls:"clsHeaderTwo" ,
items: [
{ xtype: 'title' ,
cls: 'clsLeftTitle',
title: "My Incidents",
},
{ xtype: 'spacer'},
{ xtype: 'title' ,
cls: 'clsRightTitle',
id: 'idIncidentsListTitle',
title:"Welcome",
},
]
},
{
xtype: "list",
store: "IncidentStore",
itemId:"incidentsList",
id:"inclist",
loadingText: "Loading Incidents...",
emptyText: "<div class=\"empty-text\">No incidents found.</div>",
onItemDisclosure: true,
itemTpl: Ext.create('Ext.XTemplate',
'<tpl if="TKT_STATUS_NAME == \'CLOSED\'">',
'<div class="vm_statusRed">',
'</tpl>',
'<tpl if="TKT_STATUS_NAME == \'OPENED\'">',
'<div class="vm_statusYellow">',
'</tpl>',
'<tpl if="TKT_STATUS_NAME == \'ASSIGNED\'">',
'<div class="vm_statusOrange">',
'</tpl>',
'<tpl if="TKT_STATUS_NAME == \'PENDING\'">',
'<div class="vm_statusRed">',
'</tpl>',
'<tpl if="TKT_STATUS_NAME == \'RESOLVED\'">',
'<div class="vm_statusOrange">',
'</tpl>',
'<tpl if="TKT_STATUS_NAME == \'REOPEN\'">',
'<div class="vm_statusYellow">',
'</tpl>',
'<div class="vm_dvList"><h4 class="vm_txtName"><span class="vm_listHeader"><label>Inci.#{TKT_ID} by </label><label class="vm_txtFirstName"><i>{FIRST_NAME:ellipsis(15, true)}</i></label></span><div class="date vm_clsDate">{CREATED_ON:date("d-M-y H:i")}</div></h4>',
'<div class="vm_title">{TKT_SUBJECT}</div>',
'<div class="vm_subDesc">{TKT_DESC}</div></div></div>'
)
}],
listeners: [
{
delegate: "#incidentsList",
event: "disclose",
fn: "onIncidentsListDisclose",
loadingText: "Loading ...",
},
]
},
initialize: function() {
this.callParent(arguments);
var getLoginData = localStorage.getItem('userData');
var parseData = JSON.parse(getLoginData);
var fname = parseData[0].FIRST_NAME;
var getIncidentData = localStorage.getItem('userIncidentData');
var parseIncidentData = JSON.parse(getIncidentData);
Ext.getCmp("idIncidentsListTitle").setTitle("Welcome, " + fname);
Ext.getStore("IncidentStore").setData(localStorage.userIncidentData).load();
},
onIncidentsListDisclose: function (list, record, target, index, evt, options) {
console.log("editIncidentCommand");
/*var list = Ext.getCmp('idIncidentList');
list.setMasked({
xtype:'loadmask',
message:'Loading...'
});*/
this.fireEvent('editIncidentCommand', this, record);
}
});
Editor View :
Ext.define("Sample.view.IncidentEditor", {
extend: 'Ext.form.Panel',
xtype: 'incidentsEditor',
id:'incidentsEditorView',
alias: "widget.incidenteditorview",
config: {
scrollable: 'vertical',
id:'idIncidentEditor',
layout:'vbox',
items: [
{
xtype: "toolbar",
docked: "top",
ui:'light',
id:"idHeaderTwo",
cls:"clsHeaderTwo",
items: [
{ xtype: 'title' ,
cls: 'clsLeftTitle',
title: "Incident Details",
},
{xtype: 'spacer'},
{ xtype: 'title' ,
cls: 'clsRightTitle',
id: 'idIncidentEditorTitle',
title:"Welcome",
},
]
},
{ xtype: "fieldset",
items: [
{
xtype: 'textfield',
name: 'TKT_SUBJECT',
label: 'Subject',
labelAlign: 'top',
cls:'vm_fieldFont',
clearIcon:false,
disabled:true
},
{
xtype: 'textareafield',
name: 'TKT_DESC',
label: 'Description',
labelAlign: 'top',
cls:'vm_fieldFont',
clearIcon:false,
disabled:true
},
{
xtype: 'textfield',
name: 'SEV_DESC',
label: 'Impact',
labelWidth:'45%',
cls:'vm_fieldFont',
clearIcon:false,
disabled:true
},
{
xtype: 'textfield',
name: 'SERVICE_NAME',
id:'displayIncident',
cls:'vm_fieldFont',
label: 'IncidentType',
disabled: true,
labelWidth:'45%',
},
{
xtype: 'textfield',
label: 'Category',
name: 'CATEGORY_NAME',
cls:'vm_fieldFont',
id:'getCategory',
labelWidth:'45%',
disabled: true,
},
]
},
],
},
initialize: function() {
var getLoginData = localStorage.getItem('userData');
var parseData = JSON.parse(getLoginData);
var fname = parseData[0].FIRST_NAME;
Ext.getCmp("idIncidentEditorTitle").setTitle("Welcome, " + fname);
//var list = Ext.getCmp('idIncidentList');
//list.unmask();
},
onIncidentsListDisclose: function (list, record, target, index, evt, options) {
console.log("editIncidentCommand");
this.fireEvent('editIncidentCommand', this, record);
}
});
Controller:
Ext.define("Sample.controller.Incidents", {
extend: "Ext.app.Controller",
config: {
refs: {
//lookup for views by xtype
incidentsListView:'incidentslist',
incidentEditorView: 'incidenteditorview',
incidentsList: 'incidentsList',
listContainer:'listContainer'
},
control: {
incidentsListView: {
//commands fired by the Incidents list container.
editIncidentCommand: "onEditIncidentCommand",
},
}
},
//Transitions
slideLeftTransition: { type: 'slide', direction: 'left' },
slideRightTransition: { type: 'slide', direction: 'right' },
//Helper function(generates random integer)
getRandomInt: function (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
},
//Function to get incident details and set them to incidentview
activateIncidentEditor: function (record) {
var incidentContainer = this.getListContainer();
var incidentEditorView = Ext.create("Sample.view.IncidentEditor");
incidentEditorView.setRecord(record); // load() is deprecated.
incidentContainer.push(incidentEditorView);
},
//on edit incident command
onEditIncidentCommand: function (list, record) {
this.activateIncidentEditor(record);
}
});
Please help me guys ... Thanks in Advance ...!!!

Answer 1

I experience the same problems. Coding Sencha Touch 2 in MVC format makes the app's respond super-slow on "old" hardware. Especially Android. It's the drawback of HTML5 vs Native. However they claim the performance would increase when manually building the lib, I experienced almost no improvement.
On Android most performance based issues are related to Animations though. Try setting the show/hide animations to none and see if it improves.
You can also try setting the onBackButtonTap and other events on the controller though. That should improve the page rendering allot.

Answer 2

I had a similar problem, in my case the solution was this:
http://www.sencha.com/forum/showthread.php?184341-Best-practice-to-prevent-App-peformance-from-Slowly-degrading-after-drilling-around&p=900511&posted=1#post900511