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The API is listed here: http://livedocs.macromedia.com/labs/1/flex20beta2/langref/mx/controls/treeClasses/ITreeDataDescriptor.html The most important ones are isBranch and
getChildren. In B2 be aware that isBranch and getChildren can be passed null
in which case you should just return false and null respectively. If you don’t
need drag and drop just have addChildAt and removeChildAt return false.
getChildren should just return an ArrayCollectoin that contains the array pointed
to by the node property. isBranch would return true if node != null &&
node.length > 0 I guess. HTH, Matt From: Any examples on how to do that? The help
only mentions some addChildAt methods, but I don’t think I have to loop through
all the data? Jonas From: Since the children are named
“node” and not “children” the default data descriptor
isn’t going to work. You probably need to write a quick
ITreeDataDescriptor implementation that will return the right children
property/collection. Matt From: Hi, I’m trying to fill my treeview with data retrieved
from a webservice. I have my resultformat set to default (Object), as e4x or
xml doesn’t give the correct result. Filling a datagrid with the data I retrieve works perfectly,
but the problem is when there are nested objects in it, the tree doesn’t
draw childNodes. This is the value of my webservice result object: event = events.DataManagerResultEvent (@2b67be6) bubbles = false :
Boolean cancelable = false :
Boolean currentTarget =
managers.DataManager (@2b0b0b6) eventPhase = 2 [0x2]
: Number result =
mx.utils.ObjectProxy (@29d6e46)
getCategoriesResult = Object (@2bab0a6)
node = Object (@2bab8c6)
node = Array (@2b672b6)
[0] = Object (@2baba66)
catID = 15 [0xf] : Number
label = "Pixco Labs" : String
[1] = Object (@2babc26)
catID = 1 [0x1] : Number
label = "Technology" : String
node = Array (@2b671c6)
[0] = Object (@2babe06)
catID = 6 [0x6] : Number
label = "ASP.NET" : String
[1] = Object (@2b9c046)
catID = 7 [0x7] : Number
label = "HTML/CSS" : String
[2] = Object (@2b9c246)
catID = 8 [0x8] : Number
label = "_javascript_" : String
[3] = Object (@2b9c426)
catID = 9 [0x9] : Number
label = "SQL" : String
[4] = Object (@2b9c606)
catID = 10 [0xa] : Number
label = "Tech Experiments" : String
[5] = Object (@2b9c7e6)
catID = 16 [0x10] : Number
label = "Flash/Flex/Flash Lite" : String
length = 6 [0x6] : Number
[2] = Object (@2b6fa06)
catID = 2 [0x2] : Number
label = "Utilities" : String
node = Array (@2b67376)
[0] = Object (@2babf66)
catID = 11 [0xb] : Number
label = "Client tools" : String
[1] = Object (@2babd66)
catID = 12 [0xc] : Number
label = "Server tools" : String
length = 2 [0x2] : Number
[3] = Object (@2babb86)
catID = 3 [0x3] : Number
label = "Design" : String
node = Array (@2b676d6)
[0] = Object (@2bab966)
catID = 13 [0xd] : Number
label = "Cool layouts" : String
[1] = Object (@2bab386)
catID = 14 [0xe] : Number
label = "Design experiments" : String
length = 2 [0x2] : Number
[4] = Object (@2c62e26)
catID = 4 [0x4] : Number
label = "Usability" : String
[5] = Object (@2c62286)
catID = 5 [0x5] : Number
label = "Off-topic" : String
length = 6 [0x6] : Number
xmlns = 0 [0x0] : Number
object = Object (@2bab1a6)
uid = "F97D8CAC-0C05-4ED5-3B1FFFFFFFFF090A" : String
xmlns = "http://tempuri.org/" : String target =
managers.DataManager (@2b0b0b6) type =
"getCategoriesResponse" : String The tree only renders the nodes in the root, it
doesn’t create the subNodes. Do I need to loop through this data in code? It would be a
lot easier if I could just put this result as the dataSource for my tree. Thanks for any suggestions,
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