Can anybody tell How to implement back button functionality in sencha
Thanks
Use Navigationview component.NavigationView auto add Back button on top toolbar and handles functionality of Back.
config: {
title:'Home',
layout:'fit',
items:[
{
xtype:'titlebar',
title:'Home',
docked:'top',
items: [
{
xtype: 'button',
text: 'Logout',
align: 'right',
initialize: function () {
this.element.on({
tap: function () { Ext.Viewport.setActiveItem(Ext.widget('home'));
}
});
}
}
]
},
}
}
});
Related
I'm following through this sencha touch tutorial, however, I could not get tap event to fire, I've tried with and with out using id to get a reference..but no luck..here is my code..
View:
Ext.define("NotesApp.view.NotesListContainer", {
extend: "Ext.Container",
xtype: "NotesListView",
config: {
items: [{
xtype: "toolbar",
docked: "top",
title: "My Notes",
items:[{
xtype: "spacer",
}, {
xtype: "button",
text: "New",
ui: "action",
action: "addNote",
id: "new-note-btn"
}]
}]
}
});
Controller:
Ext.define("NotesApp.controller.Notes", {
extend: "Ext.app.Controller",
config: {
refs: {
notesListView: 'NotesListView',
newNoteBtn: 'notesListView button[action=addNote]'
},
control: {
tap: "onNewNote"
}
},
onNewNote: function(){
console.log("New button has been tapped!!");
},
launch: function() {
this.callParent();
console.log("Launch in Notes.js");
},
init: function(){
this.callParent();
console.log("Init in Notes.js");
}
});
I couldn't workout what I'm missing..when I tap on the New button in the toolbar, no event seems to be firing as theres nothing in the console logs. I've tried Safari, Chrome and Firefox..no joy..Could you please take a quick look and see if could find what I'm missing? Is there a way to debug Sencha Touch apps?
Try to use:
newNoteBtn: 'button[action=addNote]'
or:
newNoteBtn: '#new-note-btn'
instead of:
newNoteBtn: 'notesListView button[action=addNote]'
I have a button at the top right of every page that I want to link to a certain page within my application. Is there a way to give each instance of this button the same behaviour? and if so where would the code sit so that it affects every page? Many thanks in advance.
View:
items: [
{
title: '<span class="logo"></span>',
xtype: 'titlebar',
docked: 'top',
items: [
{
xtype: 'button',
align: 'right',
iconAlign: 'right',
id: 'buytickets',
text: 'Buy Tickets'
}
]
}
]
Controller (specific to one page):
config: {
refs: {
main: 'ListNav'
},
control: {
"button#buytickets": {
tap: 'buytickets'
}
}
},
buytickets: function(button, e, eOpts) {
this.getMain().push({
xtype: 'buyticketspanel'
});
},
You could just put the button at the top of your Viewport, in the app.js file:
Ext.application({
name: 'MyApp',
requires: [],
views: [/*Views*/],
controllers: [/*Controllers*/],
viewport: {
layout: 'vbox'
},
launch: function() {
var me = this;
// Destroy the #appLoadingIndicator element
Ext.fly('appLoadingIndicator').destroy();
// Initialize the main view
Ext.Viewport.add([
{
title: '<span class="logo"/>',
xtype: 'titlebar',
docked: 'top',
items: [
{
xtype: 'button',
align: 'right',
iconAlign: 'right',
id: 'buytickets',
text: 'Buy Tickets',
handler: me.doBuyTickets
}
]
},
Ext.create('MyApp.view.Main', {flex: 1})
]);
},
doBuyTickets: function() {
//do stuff
}
});
****EDIT****:
However, you won't be able to re-purpose that bar as the title bar for a NestedView. If you need to have that, then you might be best served with a utils file that has a method to add a button to a toolbar, and just reuse that in the init function of any NestedView components.
Utils.js:
Ext.define("MyApp.util.Utils", {
singleton: true,
addBuyButton: function(toolbar)
{
toolbar.add({
text: 'Buy Tickets',
align: 'right',
handler: function() {
//do stuff
}
});
}
});
Controller:
Ext.define('MyApp.controller.MyController', {
extend: 'Ext.app.Controller',
config: {
refs: {
nestedList: 'nestedlist'
},
control: {
app-page: {
initialize: 'initAppPage'
}
}
},
initAppPage: function()
{
MyApp.utils.addBuyButton(this.getNestedList().getNavigationBar());
}
});
Back Ground : I am working on an MVC application using sencha touch 2. I am working on a page which has two tabs. Inside the first tab, I have a button inside a title bar.
Issue : I am not able to call anyother function from the button handler. I think, there is an issue with the scope of the calling function.
Here is my code.
Ext.define('WUPOC.view.WUHomePage', {
extend: 'Ext.TabPanel',
requires:['Ext.TitleBar','Ext.dataview.List','Ext.data.proxy.JsonP'],
alias: 'widget.wuHomePageView',
config: {
fullscreen: true,
defaults: {
styleHtmlContent: true
},
items: [{
title: 'Home',
iconCls: 'home',
items: [{
xtype: 'titlebar',
title: 'Hello',
docked: 'top',
items: [{
xtype: 'button',
text: 'LogOut',
ui: 'action',
itemId: 'newButton',
align: 'right',
handler : function(btn){
console.log('LogOut is tapped'); // This is printed
this.up.onNewButtonTap(); // Throws error
}
}],
}],
}, {
title: 'Contact',
iconCls: 'user',
html: 'Contact Screen'
}]
},
onNewButtonTap: function () {
alert('newNoteCommand');
},
});
I am getting the error as below.
Uncaught TypeError: Object function (selector) {
var result = this.parent;
if (selector) {
for (; result; result = result.parent) {
if (Ext.ComponentQuery.is(result, selector)) {
return result;
}
}
}
return result;
} has no method 'onNewButtonTap'
I think there is an issue with setting the scope of a button. Kindly help.
Thank you
First, up is a function so you need to call it this way :
this.up();
Then this.up() would only bring to the container of the button, which has no method onNewButtonTap. You could just keep doing up() until you get the right component but this would me more clever to do :
Add an xtype to your view
Use this xtype as a selector in the up function : this.up('myXType').onNewButtonTap();
Example
Hope this helps
In my application, I'm using a tab panel with 5 items in it. Each item holds around 6 panels added in card layout. When I'm at the last panel inside a tab item, I need to get back to the initial panel by clicking on the bottom tab panel (somewhat similar to a normal tab view controller in iOS). I have came across some solutions I found here, but it seems to work only when I switch between the tabs. In fact I want to listen to the click event on the same tab icon. How can I do this?
I have worked on your problem. I think this is exactly what you want. Hope this helps. If not so, please leave a comment.
1). View (MyTabPanel1.js)
Ext.define('MyApp.view.MyTabPanel1', {
extend: 'Ext.tab.Panel',
config: {
scrollable: 'vertical',
items:
[
{
xtype: 'panel',
id:'cardpanel1',
title: 'Tab1',
layout: 'card',
items: [
{
html: "First Item",
items:
[
{
xtype: 'button',
text: 'Forward',
handler: function() {
Ext.getCmp('cardpanel1').setActiveItem(1);
console.log('Going to Second Item');
}
}
]
},
{
html: "Second Item",
items:
[
{
xtype: 'button',
ui: 'confirm',
text: 'Go back',
handler: function() {
Ext.getCmp('cardpanel1').setActiveItem(0);
console.log('Going to First Item');
}
}
]
}
]
},
{
xtype: 'panel',
title: 'Tab2',
scrollable: true,
items: [
{
xtype: 'button',
margin: 10,
ui: 'action',
text: 'Tab2'
}
]
},
{
xtype: 'panel',
title: 'Tab3',
scrollable: true,
items: [
{
xtype: 'button',
margin: 10,
ui: 'action',
text: 'Tab3'
}
]
}
]
}
});
2). Controller (MainController.js)
Ext.define('MyApp.controller.MainController', {
extend: 'Ext.app.Controller',
config: {
control: {
"tabpanel #ext-tab-1":{ //ext-tab-1 is the id for the 1st tab generated by Sencha
tap: 'ontap'
}
}
},
ontap: function (){
console.log('inside controller');
Ext.getCmp('cardpanel1').setActiveItem(0);
}
});
I would give a much simpler solution
This is my view called Viewport which is a TabPanel:
Ext.define('Sencha.view.iphone.Viewport',{
extend: 'Ext.TabPanel',
xtype: 'newviewport',
alias: 'widget.newTabPanel',
Now in my controller file:
Ext.define('Sencha.controller.iphone.main', {
extend: 'Ext.app.Controller',
config:
{
refs: {
theMainTabPanelTabbarTab: 'newTabPanel > tabbar > tab', //this the tab of the tabpanel, if we listen to it that way we will know of tab panel tap.
},
control: {
theMainTabPanelTabbarTab:{
tap: 'onTapMainTabPanel'
}
}
This is a working code and works fine. Hopefully this will help you.
I have a controller and a TabPanel in Sencha Touch 2, I want to call a function when an element is tapped on the TabPanel:
TabPanel.js
Ext.define('app.view.principalTabPanel', {
extend: 'Ext.tab.Panel',
alias: 'widget.ptabpanel',
config: {
ui: 'light',
items: [
{
xtype: 'container',
itemId: 'idContnr',
title: 'tap Me!',
iconCls: 'bookmarks'
}
],
tabBar: {
docked: 'bottom',
ui: 'light'
}
}
});
controller.js
Ext.define('app.controller.mainController', {
extend: 'Ext.app.Controller',
config: {
control: {
"ptabpanel #idContnr": {
tap: 'takePhoto'
}
}
},
takePhoto: function() {
console.log('toma foto!'); // Not Working :(
}
});
Instead of listening to 'tap' events on the tabs, you should listen to 'activeitemchange' on the tabpanel itself.
See http://docs.sencha.com/touch/2-0/#!/api/Ext.tab.Panel-event-activeitemchange
It works when listening/Query for the html-id generated by Sencha "ext-tab-2".
for Instance:
config: {
control: {
"ptabpanel #ext-tab-2": {
tap: 'onButtonTap'
}
}
},
But now the problem is how to change the "ext-tab-2" name generated by Sencha Touch 2
#Borck: thanks!.
You can assign IDs to the tab bar buttons by adding this configuration to the tab panel:
tabBar: {
id: 'myTabBar',
items:[
{
id: 'myFirstTab'
},
{
id: 'mySecondTab'
},
...
]
}