我有一个ListView,它从sql表中获取FAQ数据(在从服务器下载到数据库之后)。 FAQ数据被下载并正确保存在数据库中(下面保存的常见问题解答显示了服务器上发生更改时正确,更新的常见问题解答),但ListView UI不显示更改。正确,更新的常见问题解答仅在应用重新启动时显示在ListView中。
当用户刷新/重新加载时,如何更新Listview 自动?
faqs.xml
<Collection src="faqCollection" instance="true" id="faqData"/>
.
.
<ListView id="faqListView" defaultItemTemplate="plainTemplate">
<RefreshControl id="refresh" onRefreshstart="reloadFAQs" platform="ios"/>
<Templates>
<ItemTemplate name="plainTemplate" id="plainTemplate">
<View width="98%" class="listViewRow">
<Label bindId="title" id="title"/>
</View>
</ItemTemplate>
</Templates>
<ListSection id="faqListSection" dataCollection="$.faqData" >
<ListItem title:text="{faq_title}" nid:itemId="{faq_nid}" mainText:text="{faq_text}" template="{template}"/>
</ListSection>
</ListView>
faqs.js
function autoSaveFAQs(faqs){
$.faqData.deleteAll();
console.log("faqs in autosave: " + JSON.stringify(faqs));
var f;
_.each(faqs, function(faq){
faq.time = now; //adds the timestamp when FAQs have been downloaded
f = Alloy.createModel('faqCollection', faq, {silent: true});
$.faqData.add(f);
f.save();
});
var savedFAQs = $.faqData;
savedFAQs.fetch();
console.log("savedFAQs: " + JSON.stringify(savedFAQs)); //shows the updated FAQs when reloaded, but the listview is not populated
}
答案 0 :(得分:0)
<强> SOLUTION:强>
获取数据时有一个$ .destroy()方法:
$.faqData.on('fetch', function() {
if (OS_IOS) {
$.refresh.endRefreshing(); //only works on Android with AppC SDK 6.2
}
// $.destroy(); //too much cleaning. updates automatically when not destroyed after refreshEnd
});