CODEWITHSUNDEEP
iosobjective-cnsuserdefaults
Flying_Banana
Flying_Banana

Reputation: 2910

Setting NSUserDefault crashing

I'm setting a value in the user defaults and I don't know why it crashes:

[[NSUserDefaults standardUserDefaults] setObject:[textField text] forKey:@"STRING"];

This is fine but

[[NSUserDefaults standardUserDefaults] setObject:[textField text] forKey:settingKey];

This is not. settingKey is the property declared and synthesized in the class I'm using in. In fact, even this line works

[textField setText:[[NSUserDefaults standardUserDefaults] objectForKey:settingKey]];

When simulator crashes it brings me to the Core Foundation Hash (CFHash) which I can't understand:

0x1c24756: call 0x1d79a00; symbol stub for: getpid

"Thread 1: EXC_BREAKPOINT (code=EXC_1386_BPT, subcode=0x0)"

Upvotes: 2

Views: 1970

Answers (2)

Sam Spencer
Sam Spencer

Reputation: 8608

I'm not sure exactly what type of object your key is, so the crash could be caused by one of two issues:

  1. settingKey is not an object which can be stored in an NSDictionary. Any keys and their values stored in NSUserDefaults must be an NSString, NSInteger, etc. It cannot be a primitive data type like int or BOOL. More specifically, a key must be an NSString.
  2. settingKey is NULL, has not been allocated, or has been deallocated prematurely then NSUserDefaults will cause a crash. Keys cannot be NULL in NSUserDefaults (or NSDictionaries)

Upvotes: 0

Balu
Balu

Reputation: 8460

here problem is settingKey is null value.

if you are trying to set null value as an key arguement then it'l happend.

Upvotes: 3

Related Questions