Dear All,
I am developing an Cocoa application using a NSTreeView, bound to a
NSTreeController.
The application is build around a master-detail structure, with an
NSOutlineView on the left side and a NSTableView on the right side (similar to
iTunes)
I would like to remove all elements from the detail table when the user changes
selection in the Outline View before adding new elements, fair enough :-) ?
I am using the following code to remove all elements from the table :
[[arrayController mutableArrayValueForKey:@"arrangedObjects"] removeAllObjects];
which causes the following exception :
2009-11-26 14:24:39.964 iDream[61907:5937] -[_NSControllerArrayProxy
removeObjectAtIndex:]: unrecognized selector sent to instance 0x20006d9a0
2009-11-26 14:24:39.965 iDream[61907:5937] *** Terminating app due to uncaught
exception 'NSInvalidArgumentException', reason: '-[_NSControllerArrayProxy
removeObjectAtIndex:]: unrecognized selector sent to instance 0x20006d9a0'
*** Call stack at first throw:
(
0 CoreFoundation 0x00007fff82e51444
__exceptionPreprocess + 180
1 libobjc.A.dylib 0x00007fff830a30f3
objc_exception_throw + 45
2 CoreFoundation 0x00007fff82eaa1c0
+[NSObject(NSObject) doesNotRecognizeSelector:] + 0
3 CoreFoundation 0x00007fff82e2408f
___forwarding___ + 751
4 CoreFoundation 0x00007fff82e201d8
_CF_forwarding_prep_0 + 232
5 CoreFoundation 0x00007fff82e5db2e
-[NSMutableArray removeAllObjects] + 62
6 iDream 0x0000000100002134
-[ChannelsViewController emptyTable] + 80
7 iDream 0x00000001000023b3
-[ChannelsViewController hasNewSelection:] + 45
8 Foundation 0x00007fff83e63e99
__NSThread__main__ + 1429
9 libSystem.B.dylib 0x00007fff86f7ff8e
_pthread_start + 331
10 libSystem.B.dylib 0x00007fff86f7fe41 thread_start
+ 13
)
terminate called after throwing an instance of 'NSException'
I search on Google, StackOverflow and many others but can't figure out how to
do this. Any help appreciated !
Thanks
--Seb
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