iworld iworld - 1 year ago 154
iOS Question

App crashes when storing NSArray in NSUserDefaults

I couldn't store an NSArray in

. The app gets crashed

in this line
[savedData setObject:jsonValue forKey:@"JSONDATA"];

Below is my code. and i have mention my log error below

NSArray *jsonValue =[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSUserDefaults *savedData = [NSUserDefaults standardUserDefaults];
[savedData setObject:jsonValue forKey:@"JSONDATA"];
[savedData synchronize];

Error log:

*** Terminating app due to uncaught exception '`NSInvalidArgumentException`', reason: '*** -

[NSUserDefaults setObject:forKey:]: attempt to insert non-property list object <CFBasicHash 0x8c62b10 [0x1d2aec8]>{type = immutable dict, count = 3,
entries =>

Answer Source

Yes they can not be saved like this in NSUserDefaults I am writing a code below please have a look and for more study go look apple docs okay.

Code is here :-

//For Saving

NSData *dataSave = [NSKeyedArchiver archivedDataWithRootObject:yourArrayToBeSave]];
[[NSUserDefaults standardUserDefaults] setObject:dataSave forKey:@"array"];

[[NSUserDefaults standardUserDefaults] synchronize]; // this will save you UserDefaults

//For Reteriving

NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:@"array"];
NSArray *savedArray = [NSKeyedUnarchiver unarchiveObjectWithData:data];
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