我有它实现NSCoding的自定义对象,它看起来像这样(简化当然):节能字典NSCoding反对NSUserDefaults的
@implementation FooBarThing
@synthesize foo = _foo;
@synthesize bar = _bar;
- (instancetype)initWithCoder:(NSCoder *)coder
{
self = [super init];
if (self) {
_foo = [[coder decodeObjectForKey:FOO] retain];
_bar = [[coder decodeObjectForKey:BAR] retain];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)coder
{
[coder encodeObject:self.foo forKey:FOO];
[coder encodeObject:self.bar forKey:BAR];
}
@end
目前,我在我的自定义类的数组保存到NSUserDefaults的,像这样:
-(void)saveResults:(NSArray *)results
{
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:results];
[[NSUserDefaults standardUserDefaults] setObject:data forKey:@"RESULTS"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
-(NSArray*)readResults
{
NSData *results = [[NSUserDefaults standardUserDefaults] objectForKey:@"RESULTS"];
NSArray *resultsArray = [NSKeyedUnarchiver unarchiveObjectWithData:results];
return resultsArray;
}
我想要做的,是结果的阵列存储在一个字典,用绳子像这样键入:
-(void)saveResults:(NSArray *)scanResults forKey:(NSString *)key
{
???
}
-(NSArray*)readResults:(NSString *) key
{
???
}
让我的语法正确无误,我开始相信我只是在想这个,所以帮助将apprecaited! 谢谢!
-
编辑:
因为我已经解决了这个,这是很简单的只是有一个瞬间失效。也许不是最好的选择,所以打开任何改善建议!
-(void)saveResults:(NSArray *)results forKey:(NSString *)key
{
NSMutableDictionary* dict = [NSMutableDictionary dictionaryWithDictionary:[self getResultsDict]];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:results];
if(dict == nil){
dict = [NSMutableDictionary dictionaryWithObject:data forKey:key];
}else{
[dict setObject:data forKey:key];
}
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setObject:dict forKey:@"RESULTS_DICT"];
[userDefaults synchronize];
}
-(NSArray*)readFullResults:(NSString *)key
{
NSDictionary *dict = [self getResultsDict];
NSArray *result = nil;
if(dict != nil){
[dict objectForKey:key];
NSData *data = [dict objectForKey:key];;
result = [NSKeyedUnarchiver unarchiveObjectWithData: data];
}
return result;
}
-(NSArray*) getDates
{
NSDictionary *dict = [self getResultsDict];
if(dict != nil)
{
return [dict allKeys];
}
return nil;
}
- (NSDictionary*)getResultsDict{
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
NSMutableDictionary *resultsDict = [userDefaults objectForKey:@"RESULTS_DICT"];
return resultsDict;
}
是否要将结果存储在字典或默认系统中?你想在saveResults中做什么:forKey:? – Caleb
我正在寻找将结果保存在字典中,并将字典置于系统默认值中。自从我编辑了我的答案以包含我的解决方案。谢谢您的帮助。 – xceph
真的应该从问题中删除答案,并将答案标记为已接受的答案。 – Caleb