如何通过 Sencha touch 中停靠菜单列表中的菜单项选择轮播中的卡片?
我不知道如何检索商店中给定的数据项(id-number)以将其发送到侦听器中的“setActiveItem”方法: 所以我有一个商店 - 模型:
Ext.regModel('PictureItem', {
fields: ['id', 'titel', 'url']
});
var pictureItems = new Ext.data.Store({
model: 'PictureItem',
data: [
{id:1, titel:'page 1', url:'http://placekitten.com/1024/768'},
{id:2, titel:'page 2', url:'http://placekitten.com/1024/768'},
{id:3, titel:'page 3', url:'http://placekitten.com/1024/768'},
]
});
这是我的菜单列表,名为“leftList”:
var leftList = new Ext.List({
dock: 'left',
id:'list1',
width: 135,
overlay: true,
itemTpl: '{titel}',
singleSelect: true,
defaults: {
cls: 'pic'
},
store: pictureItems,
listeners:{
selectionchange: function (model, records) {
if (records[0]) {
Ext.getCmp('karte').setActiveItem(!!!Here the number of the selected Item
or respondend "id" in the data store!!!);
}
}
}
});
和轮播......
var carousel = new Ext.Carousel({
id: 'karte',
defaults: {
cls: 'card'
},
items: [{
scroll: 'vertical',
title: 'Tab 1',
html: '<img class="orientation" alt="" src="img_winkel/titel_v.jpg">'
},
如果我调用
Ext.getCmp('karte').setActiveItem(2);
它,它可以与被调用的卡一起使用 - 但我如何从所选项目的 id 中获取数字菜单列表/商店??? 顺便说一下:
if (records[0]) { 是什么意思? 为什么是[0]?
I cannot figure out how I can retrieve a given Data item in a store (id-number) to send it to the "setActiveItem" method in a listener:
So I have a store - model:
Ext.regModel('PictureItem', {
fields: ['id', 'titel', 'url']
});
var pictureItems = new Ext.data.Store({
model: 'PictureItem',
data: [
{id:1, titel:'page 1', url:'http://placekitten.com/1024/768'},
{id:2, titel:'page 2', url:'http://placekitten.com/1024/768'},
{id:3, titel:'page 3', url:'http://placekitten.com/1024/768'},
]
});
Here is my menuList called "leftList":
var leftList = new Ext.List({
dock: 'left',
id:'list1',
width: 135,
overlay: true,
itemTpl: '{titel}',
singleSelect: true,
defaults: {
cls: 'pic'
},
store: pictureItems,
listeners:{
selectionchange: function (model, records) {
if (records[0]) {
Ext.getCmp('karte').setActiveItem(!!!Here the number of the selected Item
or respondend "id" in the data store!!!);
}
}
}
});
and the carousel....
var carousel = new Ext.Carousel({
id: 'karte',
defaults: {
cls: 'card'
},
items: [{
scroll: 'vertical',
title: 'Tab 1',
html: '<img class="orientation" alt="" src="img_winkel/titel_v.jpg">'
},
If I call
Ext.getCmp('karte').setActiveItem(2);
it works with the called card - but how can I get the number from the id of the selected item in the menu List /store????
By the way: what does mean:
if (records[0]) {
why [0]?
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我找到了自己的答案 - 很简单:
获取记录条目的秘密是“.get()”:
所以现在我可以轻松更改轮播中的 activeItem...
I FOUND THE ANSWER FOR MYSELF - IT'S EASY:
The secret to get the record-entry is ".get()":
So now I can change the activeItem in the carousel easely...