我是 Sencha Touch 2 的新手。今天我遇到了一个问题，我想在列表的侦听器中添加 itemtap 和 itemtaphold 事件，但是当 itemtaphold 触发时我无法禁用 itemtap。通常，我会使用像 dataView.config 这样的变量.istplhold 在控制器中进行区分，但在侦听器中不起作用。这是我的代码：
itemTpl: ['<table><tr>'+
//'<td>{attachmentName}</td>'+
'<td width="40px;">{i}</td>'+
// '<td ><a href="http://10.1.71.240:8080/tyoa/page/phone/request/leader/upload.jsp?attachmentId={attachid}&attachmentName={attachmentName}" id="uploadFile" style="text-decoration:none;">{attachmentName}({attachmentSize})</a></td></div>'+
'<td style="word-wrap:break-word;word-break:break-all;"><a style="text-decoration:none;">{attachmentName}({attachmentSize})</a></td>'+
'<td> </td>'+
'<td style="white-space:nowrap;"><span id="'+'{attachid}'+'test_002" style="color:#FFCC00;"></span></td>'+
'</tr></table>',
].join(''),
listeners:{
itemtap:function(dataView, index, target, record, e, eOpts){
//alert("download");
if (!dataView.config.istplhold){
var attachId=record.get('attachid');
var attachName=record.get('attachmentName');
// alert("attachId: "+attachId);
//alert("attachName: "+attachName);
$('#'+attachId+'test_002').text("Downloding...");
window.downloader.downloadFile(Global.proxyPortAndIP+"/tyoa/temp/"+attachId+"?"+attachName, {overwrite: true},
function(res){
$('#'+attachId+'test_002').text(res.progress+"%");
if(res.progress==100){
Ext.Msg.alert(attachName,"Downloading complete");
$('#'+attachId+'test_002').text("Download complete");
}
},function(error){
alert(error);
$('#'+attachId+'test_002').text("Download failed");
}
);
}else{
dataView.config.istplhold = false;
}
},
itemtaphold:function(dataView, index, target, record, e, eOpts){
var control = this;
// if (Global.istaphold){
this.actions = Ext.Viewport.add({
xtype : 'actionsheet',
items : [{
text : 'Delete',
scope : this,
handler : function() {
Ext.Msg.confirm("Delete", "Are you sure to delete this item？", function(text) {
if (text == 'yes') {
// control.deleteContent(record.get('attachid'));
var docbaseAttachmentId=record.get('attachid');
Ext.data.JsonP.request({
url : Global.API + '/docbase/docbaseListDelete.jsp',
callbackKey : 'callback',
params : {
id : docbaseAttachmentId,
format : 'json',
},
success : function(result) {
reg = result[0].reg;
if (reg == 'true') {
Ext.Msg.alert("", "Item deleted");
}
storeDocuments = Ext.getStore('docbaseAttachments');
recordIndex = storeDocuments.findExact('attachid',docbaseAttachmentId);
storeDocuments.removeAt(recordIndex);
storeDocuments.sync();
},
});
}
});
this.actions.hide();
}
},{
text : 'Modify',
scope : this,
handler : function() {
this.actions.hide();
// control.updateDocbaseListDetail(record);
view =Ext.create('tyoa.view.more.docbase.DocbaseListDetailPanel');
view.setRecord(record);
viewDirectionLeft(view);
}
},
{
xtype : 'button',
text : 'Cancel',
scope : this,
handler : function() {
this.actions.hide();
}
}]
});
this.actions.show();
// }
dataView.config.istplhold = !dataView.config.istplhold;
},
},
另外，我在 Sencha 论坛中看到了另一个解决方案：
listeners : {
itemtap : function(list) {
if (!list.lastTapHold || (list.lastTapHold - new Date() > 1000)) {
console.log('itemtap');
}
},
itemtaphold : function(list) {
list.lastTapHold = new Date();
console.log('itemtaphold');
}
}
但它看起来只能使用一次，无论如何，正如作者所说，它可能导致内存泄漏。所以任何人都可以给我任何建议吗？提前谢谢你！