objective c - How to dynamically update an NSTreeController and NSOutlineView? -

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when outlineviewitem expanded -

 (void) outlineviewitemdidexpand:(nsnotification *)notification

-, i'm able add object treecontroller (log statements show newly added object in correct place of hierarchy), outlineview/ui isn't updating reflect insertion.

to no avail, i've used

  • [self.outlineview reloaditem:nil reloadchildren:yes],

  • [self.outlineview reloaddata], ,

  • [self.outlineview sethidden:yes] then
    [self.outlineview sethidden:no]

to try force reload structure.

this done programmatically in objective-c.

6 hours later, got it.

i needed update nstreecontroller cache, achieved via rearrangeobjects method.

so answer question is:

[self.clouddirectorytreecontroller rearrangeobjects];

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