iphone - Initializing NSMutableDictionary to create a filter -



iphone - Initializing NSMutableDictionary to create a filter -

this continuation question had post yesterday: initializing nsmutabledictionary

(it's stupid question, don't see i'm doing wrong.)

i liked thought of having "all" listed in tableview pops when filter button pressed in order indicate no filter applied. info model class sorted correctly nsmutablearray so:

nsarray *anarray = [dmgr.categorydictionary allkeys]; self.categoriesarray = [anarray sortedarrayusingselector:@selector(localizedcaseinsensitivecompare:)]; [self.categoriesarray insertobject:@"all" atindex:0]; // line causes crash

but want add together "all" alternative categoriesarray show in uitableview. when seek run it, crashes @ line because of

nsarrayi insertobject:atindex:]: unrecognized selector sent instance 0x59baba0 *** terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[__nsarrayi insertobject:atindex:]: unrecognized selector sent instance 0x59baba0'

any help appreciated. thanks!

sortedarrayusingselector: returns immutable array why can't add together it. mutable copy.

self.categoriesarray = [nsmutablearray arraywitharray:[anarray sortedarrayusingselector:@selector(localizedcaseinsensitivecompare:)]];

iphone nsmutablearray

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