objective c - "addTarget:self action:@selector" :: NSArray works, but pointers fail? -

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"addtarget:self action:@selector" :: nsarray works, pointers fail on callback routine? calling routine viewdidload works both nsarray , pointers? different "addtarget:self action:@selector" callback??

here code snippet:

thanks looking...

file.h

nsarray *nsarra; nsstring **p_nssb;

file.m

- (void)viewdidload {     nsarra = [[nsarray alloc] initwithobjects:@"0",@"1",@"2",@"3",@"4",@"5",@"6",nil];       p_nssb = (nsstring**)malloc(10*sizeof(nsstring*));     (int i=0; i<10; i++) {         p_nssb[i]=[nsstring stringwithformat:@"%d", i];     }      [self viewmenu]; }   - (void) viewmenu {         uibutton *uibtnmenu = [uibtnmenu addtarget:self action:@selector(actionmenu:) forcontrolevents:uicontroleventtouchupinside];     [uiviewmenu addsubview:uibtnmenu];      nslog(@"nsarra: %@ %@ %@", [nsarra objectatindex:0], [nsarra objectatindex:1], [nsarra objectatindex:2]);//<--works     nslog(@"p_nssb: %@ %@ %@", p_nssb[0], p_nssb[1], p_nssb[2]);//<--works }   - (void) actionmenu:  (uibutton *) uibtnmenu{     nslog(@"nsarra: %@ %@ %@", [nsarra objectatindex:0], [nsarra objectatindex:1], [nsarra objectatindex:2]);//<--works     nslog(@"p_nssb: %@ %@ %@", p_nssb[0], p_nssb[1], p_nssb[2]);//<--fails(drops out of app) }

when allocate [nsstring stringwithformat:] instance autoreleased. released next event cycle. you'll need retain instance.

so either do:

[[nsstring stringwithformat:@"%d", i] retain];

or:

[[nsstring alloc] initwithformat:@"%d", i];

also, when release file.m object you'll need do:

for (int i=0; i<10; i++) {     [p_nssb[i] release]; }

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