Attempt to set a non-property-list object [duplicate] - ios

Question

This question already has answers here:
Attempt to set a non-property-list object as an NSUserDefaults
(12 answers)
Closed 8 years ago.
NSMutableArray *mutableArray = [NSMutableArray array];
Prostate *prostate = [Prostate new];
prostate.prostateCheckTimeString = self.prostateCheckTime.text;
prostate.prostateCubeString =self.prostateCube.text;
prostate.prostateAntigemString =self.prostateAntigem.text;
prostate.peeSpeedMaximumString =self.peeSpeedMaximum.text;
prostate.peeRemenderString =self.peeRemender.text;
[mutableArray addObject:prostate];
NSArray *tempArray = [[NSArray alloc]initWithArray:self.mutableArray];
[Global saveArrayToUserDefault:prostateArray saveValue:tempArray];
NSArray *array = [Global getArrayFromUserDefault:prostateArray];
//Below is my global object
**+(void)saveArrayToUserDefault:(NSString *)userDefaultKey saveValue:(NSArray *)value**
{
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setObject:value forKey:prostateArray];
[userDefaults synchronize];
}
**+(NSArray *)getArrayFromUserDefault:(NSString *)userDefaultKey**
{
NSArray *temp;
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
temp = [userDefaults objectForKey:userDefaultKey];
return temp;
}
-----------------------------------Description ---------------------------------------
I had Been Search for a while , I know NSUserDefault can only store NSArray , I tried to convert NSMutableArray to NSArray , but still got error
-----------------------------------Error ---------------------------------------------
Property list invalid for format: 200 (property lists cannot contain objects of type 'CFType') Attempt to set a non-property-list object (
""

Answer 1

Implement the <NSCoding> protocol in your entity class which you wanna save
-(void)writeArrayWithCustomObjToUserDefaults:(NSString *)keyName withArray:(NSMutableArray *)myArray {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:myArray];
[defaults setObject:data forKey:keyName];
[defaults synchronize]; }
-(NSArray *)readArrayWithCustomObjFromUserDefaults:(NSString*)keyName {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *data = [defaults objectForKey:keyName];
NSArray *myArray = [NSKeyedUnarchiver unarchiveObjectWithData:data];
[defaults synchronize];
return myArray; }

Answer 2

Prostate is your custom object and NSUserDefaults does not allow you to save it.
So you have to Archive it before saving to NSUserDefaults and Unarchive it when reading back from NSUserDefaults.
So your methods to save and read user defaults data should look like:
-(void)writeArrayWithCustomObjToUserDefaults:(NSString *)keyName withArray:(NSMutableArray *)myArray {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:myArray];
[defaults setObject:data forKey:keyName];
[defaults synchronize];
}
-(NSArray *)readArrayWithCustomObjFromUserDefaults:(NSString*)keyName {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *data = [defaults objectForKey:keyName];
NSArray *myArray = [NSKeyedUnarchiver unarchiveObjectWithData:data];
return myArray;
}