我在sencha应用程序中使用sencha导航视图。 我的错误场景 我有主屏幕上的图像列表视图第一次它加载20记录然后滚动到下来记录将在每次滚动时增加20当我点击任何图像并重定向到另一个视图，如图像详细视图或配置文件视图然后按下后退按钮返回所有图像重叠。
请帮助我尝试在10天之前解决此错误但未获得成功： - 重叠之前
1）我正在使用导航视图，它使用＆＃34; Ext.dataview.DataView＆＃34;并且有使用 useComponents：true， defaultType：＆＃39; productlistitem＆＃39;
2）产品列表项目＆＃39;用'Ext.dataview.component.DataItem＆＃39;扩展在这个视图中我使用更新方法设置图像和其他组件数据，并使用动态方法图像宽度，高度。
您可以在下面查看我的所有观看代码A）Home.js
var selectedDate = $('#reportrange span')[0].innerHTML.split('-');
alert(selectedDate[0]); //Start date
alert(selectedDate[1]); //End date
B）ListItem.js
Ext.define('demo.view.home.Home', {
extend: 'Ext.dataview.DataView',
requires: [
'demo.view.product.ListItem',
'demo.view.layout.ColumnLayout'
],
xtype: 'home',
config: {
scrollable: true,
plugins: {
xclass: 'demo.plugin.DataViewPaging', // Reference plugin by class
autoPaging: true
},
autoDestroy: true,
store: 'LookStore',
margin:'2 0',
useComponents: true,
defaultType: 'productlistitem',
cls: 'wow-home',
layout: {
type: 'column',
columnCount: 2,
columnWidth: 160
}
}
});
c）Item.js
var listItemData=[];
Ext.define('demo.view.product.ListItem', {
extend: 'Ext.dataview.component.DataItem',
requires: ['demo.view.product.Item'],
xtype: 'productlistitem',
config: {
padding: 2,
zIndex:999,
items: [{
xtype: 'item'
}]
},
initialize: function() {
console.log('initing the list item ');
var me = this;
me.callParent(arguments);
this.on('heightchange', 'recalculateHeight', me, {
delegate: '> item'
});
},
recalculateHeight: function() {
var me = this;
me.setHeight(me.innerElement.getHeight());
},
updateRecord: function(record) {
if (!record) {
return;
}
var me = this,
item = me.down('item');
me.callParent(arguments);
if (item) {
item.updateRecord(record, me.getDataview());
}
listItemData.push(item.id);
}
});
D）ItemImage.js
Ext.define('demo.view.product.Item', {
extend: 'Ext.Container',
xtype: 'item',
requires: [
'Ext.Carousel',
'demo.view.product.ItemImage',
'demo.view.product.UserInfo',
'demo.view.product.InfoLabel'
],
config: {
record: null,
baseCls: 'wow-item',
showDescription: false,
items: [{
xtype: 'itemimage',
width: '100%'
}, {
xtype: 'userinfo',
height: 40,
listeners: {
painted: function() {
if (!this.element.hasListener('tap')) {
this.element.on('tap', function(e) {
e.stopPropagation();
var record = this.scope.up('item').getRecord();
if (!this.scope.getHandleListeners()) {
if(Ext.ComponentQuery.query('main')[0].getActiveItem().xtype === "wardrobedrawer")
demo.app.getController('ProductController').openProductDetail('', '', '', record);
return;
}
if (record && !Ext.isEmpty(record.raw.product_id) && !Ext.isEmpty(record.raw.importer)) {
var brandMerchantProducts = this.scope.up('brandmerchantproducts');
if (brandMerchantProducts) {
var currentTitle = demo.app.getController('HomeController').getMain().getActiveItem().config.title;
var currentItem = this.scope.element.dom.textContent;
if (currentTitle.toUpperCase() !== currentItem.toUpperCase()) {
demo.app.getController('ProductController').showMerchantProducts(record);
}
return;
}
demo.app.getController('ProductController').showMerchantProducts(record);
} else {
var list = this.scope.up('list');
demo.app.getController('ProfileController').goToOtherUserProfile(list, null, null, record.get('merchantId'), e);
}
}, {
scope: this
});
}
}
}
},
{
xtype: 'container',
height: 40,
margin:'1 0 0 0',
name: 'infoContainer',
layout:'hbox',
defaults: {
xtype: 'infolabel',
flex: 1
},
items: [{
iconCls: 'icon-diamond',
text: '09',
itemId: 'wows',
listeners: {
painted: function() {
if (!this.element.hasListener('tap')) {
this.element.on('tap', function(e) {
e.stopPropagation();
var record = this.scope.up('item').getRecord();
if (record.get('type') == 'product') {
demo.app.getController('ProductController').wowOrUnwowHomeProduct(record, this.scope.up('item'));
}
if (record.get('type') === 'look') {
demo.app.getController('ProductController').wowOrUnwowHomeLook(record, this.scope.up('item'));
}
}, {
scope: this
});
}
}
}
}, {
iconCls: 'icon-drawer',
text: '11',
itemId: 'lookOrAdd',
listeners: {
painted: function() {
if (!this.element.hasListener('tap')) {
this.element.on('tap', function(e) {
e.stopPropagation();
var record = this.scope.up('item').getRecord();
if (record.get('type') == 'product') {
demo.addedProductItem = this.scope.up('item');
demo.app.getController('ProductController').addProduct(record);
}
if (record.get('type') === 'look') {
demo.app.getController('ProductController').addHomeLook(record, this.scope.up('item'));
}
}, {
scope: this
});
}
}
}
}]
}
]
},
initialize: function() {
var me = this;
me.callParent(arguments);
me.on('load', 'imageLoaded', me, {
delegate: 'itemimage'
});
},
imageLoaded: function() {
var me = this;
me.setHeight(me.element.getHeight());
},
updateRecord: function(item, dataview) {
if (!item) {
return;
}
if (dataview && dataview.config.showDescription) {
this.setShowDescription(true);
}
var me = this;
me.setRecord(item);
if (item) {
var itemImage = this.down('itemimage'),
images = item.get('images'),
wows = item.get('wows') + '',
adds = item.get('adds') + '',
userInfo = this.down('userinfo');
if (images && images.length) {
itemImage.setSrc(images[0].original);
}
var type = item.get('type');
var lookOrProduct = me.down('#lookOrAdd');
var added = item.get('added');
var icon;
if (type === 'product') {
icon = 'icon-add-drawer';
lookOrProduct.setIconCls(icon);
} else {
icon = added ? 'icon-counterlook' : 'icon-addlookbook';
lookOrProduct.setIconCls(icon);
}
if (!Ext.isEmpty(item.raw.product_id)) {
userInfo.setAvatar('');
} else { // USER
var importer = item.get('importer');
if (importer) {
var avatar = importer.avatar;
if (avatar) {
userInfo.setAvatar(avatar);
} else {
userInfo.setAvatar('resources/images/default/default_avatar.jpg');
}
}
}
me.down('#wows').setText(wows);
if (!item.get('wowed')) {
me.down('#wows').addCls('grayedout-cls');
} else {
me.down('#wows').removeCls('grayedout-cls');
}
lookOrProduct.setText(adds);
if (!item.get('added')) {
lookOrProduct.addCls('grayedout-cls');
} else {
lookOrProduct.removeCls('grayedout-cls');
}
var infoContainer = this.down('container[name=infoContainer]');
if (infoContainer && infoContainer.isHidden()) {
infoContainer.show();
}
var title = Ext.ComponentQuery.query('main')[0].getActiveItem().title;
var storeId = this._record.stores[0].getStoreId();
if (type === 'product' && !Ext.isDefined(title) && storeId !== 'WowedStore' && storeId !== 'SearchStore' && storeId !== 'BrandMerchatProducts') {
var homeUrl = this._record.stores[0].getProxy().getUrl();
if ((homeUrl === demo.model.Config.apiServerPath('home')) || (homeUrl === demo.model.Config.apiServerPath('home'))) {
var noOfProducts = Ext.ComponentQuery.query('#productsInTheListId').length;
if (noOfProducts === 1) {
userInfo.setUsername(item);
if (me.getShowDescription()) {
infoContainer.hide();
userInfo.setAvatar('');
userInfo.setUsername(item);
userInfo.setHandleListeners(false);
}
} else {
userInfo.setUsername(item.get('author'));
if (me.getShowDescription()) {
infoContainer.hide();
userInfo.setAvatar('');
userInfo.setUsername(item.get('description'));
userInfo.setHandleListeners(false);
}
}
} else {
userInfo.setUsername(item);
if (me.getShowDescription()) {
infoContainer.hide();
userInfo.setAvatar('');
userInfo.setUsername(item);
userInfo.setHandleListeners(false);
}
}
} else {
userInfo.setUsername(item.get('author'));
if (me.getShowDescription()) {
infoContainer.hide();
userInfo.setAvatar('');
userInfo.setUsername(item.get('description'));
userInfo.setHandleListeners(false);
}
}
}
},
updateColorOfItem: function(item) {
var me = this,
lookOrProduct = me.down('#lookOrAdd');
if (!item.get('wowed')) {
me.down('#wows').addCls('grayedout-cls');
} else {
me.down('#wows').removeCls('grayedout-cls');
}
if (!item.get('added')) {
lookOrProduct.addCls('grayedout-cls');
} else {
lookOrProduct.removeCls('grayedout-cls');
}
}
});
E）UserInfo.js
Ext.define('demo.view.product.ItemImage', {
extend: 'Ext.Img',
xtype: 'itemimage',
config: {
},
onLoad: function(event) {
var me = this,
width = me.getParent().element.getWidth(), // me.element.getWidth() should work but I have found that sometimes it gives a width of 0. Now I go with a width of the parent.
imageObject = me.imageObject,
naturalWidth = imageObject.width,
naturalHeight = imageObject.height,
naturalRatio = naturalHeight / naturalWidth,
newHeight = naturalRatio * width;
me.setHeight(newHeight);
//Ext.ComponentQuery.query('productlistitem')[0].setHeight(newHeight+84);
me.callParent(event);
}
});
F）InfoLabel.js
Ext.define('demo.view.product.UserInfo', {
extend: 'Ext.Container',
requires: ['Ext.Img'],
xtype: 'userinfo',
config: {
avatar: null,
username: null,
baseCls: 'wow-user-info',
handleListeners: true
},
applyAvatar: function(avatar) {
if (Ext.isEmpty(avatar)) {
return null;
}
return Ext.factory({
src: avatar,
cls: 'wow-avatar',
docked: 'left'
}, 'Ext.Img');
},
updateAvatar: function(newAvatar, oldAvatar) {
if (newAvatar) {
this.add(newAvatar);
}
if (oldAvatar) {
oldAvatar.destroy();
}
},
applyUsername: function(item) {
if (Ext.isObject(item)) {
var price_value = "",
price_currency = "",
itemName = "";
if (Ext.isDefined(item.raw.price)) {
if (Ext.isDefined(item.raw.price.value)) {
price_value = item.raw.price.value.toString();
}
}
if (Ext.isDefined(item.raw.price)) {
if (Ext.isDefined(item.raw.price.currency)) {
price_currency = item.raw.price.symbol;
}
}
if (item.raw.description === null) {
var item = item.data.author;
} else {
var item = item.raw.description;
}
item = item.toLowerCase();
itemName = item.charAt(0).toUpperCase() + item.slice(1);
if (Ext.isDefined(price_currency) && Ext.isDefined(price_value) && (price_currency !== "") && (price_value !== "")) {
itemName = '<div class="itemNames"><span style="font-size:0.9em" >' + price_currency.bold() + ' ' + price_value.bold() + '</span>' + " " + '<span style=" font-size:0.8em" class="itemName">' + itemName + '</span>' + '</div>';
} else {
itemName = '<div class="itemNames"><span style=" font-size:0.8em" class="itemName">' + itemName + '</span></div>';
}
return Ext.factory({
html: itemName,
xtype: 'component',
cls: 'wow-username-product'
});
} else {
return Ext.factory({
html: item,
xtype: 'component',
cls: 'wow-username'
});
}
},
updateUsername: function(newUsername, oldUsername) {
if (newUsername) {
this.add(newUsername);
}
if (oldUsername) {
oldUsername.destroy();
}
}
});