Objective c NSUserDefaults数组

我需要两个

NSMutableArray

，其中将包含

NSString

这些阵列是：

ListOFUserNames=[NSMutableArray array];
SituationstoName =[NSMutableArray array];

我在每个可变数组中有两组不同的字符串

命名后添加到

Listofusernames

将情境添加到

SituationstoName

 [ListOFUserNames addObject:AfterNamed];
 [SituationstoName addObject:Situation];

我正试图用各自的字符串保存

用户名列表

和

情景名称

 NSUserDefaults *something = [NSUserDefaults standardUserDefaults];     
 [something setObject:ListOFUserNames forKey:@"somedata"];
 [something synchronize];

 NSUserDefaults *something2 = [NSUserDefaults standardUserDefaults];  
 [something2 setObject:SituationstoName forKey:@"somedata2"];
 [something2 synchronize];

在加载它们的方法中，没有任何结果。 该方法的代码为：

NSUserDefaults *somet = [NSUserDefaults standardUserDefaults];
NSUserDefaults *somet2 = [NSUserDefaults standardUserDefaults];

ListOFUserNames = [somet objectForKey:@"somedata"] ;
SituationstoName = [somet2 objectForKey:@"somedata2"] ;
[somet synchronize];
[somet2 synchronize];

问题是它没有加载保存在可变数组中的字符串

//initialise array
NSMutableArray *listOFUserNames=[[NSMutableArray alloc] init];
NSMutableArray *situationstoName =[[NSMutableArray alloc] init];

//add content in the array
[listOFUserNames addObject:AfterNamed];
[situationstoName addObject:Situation];

（在存储之前，还要检查数组是否包含对象或为空。）

//Store these array in `NSUserDefaults`
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setObject:listOFUserNames forKey:@"NameData"];
[userDefaults setObject:situationstoName forKey:@"SituationData"];
[userDefaults synchronize];

//Access data where ever you want to be
//(listOFUserNames and situationstoName must be array)
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
listOFUserNames = [userDefaults objectForKey:@"NameData"] ;
situationstoName = [userDefaults objectForKey:@"SituationData"] ;