FLEX ArrayCollection to delete filtered data problem solved

1. Question:

After adding the filter to ArrayCollection, the department data will not be displayed. When I delete the undisplayed data, calling removeItemAt() cannot be deleted.

2. Reason:

Copy the codeThe code is as follows:

 
public function removeItemAt(index:int):Object 
{ 
if (index < 0 || index >= length) 
{ 
var message:String = ( 
"collections", "outOfBounds", [ index ]); 
throw new RangeError(message); 
} 

var listIndex:int = index; 
if (localIndex) 
{ 
var oldItem:Object = localIndex[index]; 
listIndex = (oldItem); 
} 
return (listIndex); 
} 

Because in var oldItem:Object = localIndex[index]; localIndex is an unfiltered data.

3. Solve

There is a list property in ArrayCollection:

Copy the codeThe code is as follows:

 
public function get list():IList 
{ 
return _list; 
} 

_list is the original data.

So if you want to delete the filtered data on the ArrayCollection with filters added, you need help from list. The implementation code is as follows:

Copy the codeThe code is as follows:

 
public function findEmployeeInSource(id:int):OrgEmployee { 
var obj:OrgEmployee = null; 
var list:IList = ; 
var len:int = ; 
for (var index:int = 0; index < len; index++) { 
obj = (index) as OrgEmployee; 
if ( == id) { 
return obj; 
} 
} 
return null; 
} 

public function deleteEmployee(id:int):void { 
var obj:OrgEmployee = findEmployeeInSource(id); 
if (obj != null) { 
var index:int = (obj); 
(index); 
} 
} 

Or a function:

Copy the codeThe code is as follows:

 
public function deleteEmployee(id:int):void { 
var obj:OrgEmployee = null; 
var list:IList = ; 
var len:int = ; 
for (var index:int = 0; index < len; index++) { 
obj = (index) as OrgEmployee; 
if ( == id) { 
(index); 
return; 
} 
} 
} 