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这是我的第一篇文章，所以请对我友善和建设性。

我试图通过 NSuserDefauls 与我的 Today Extension 共享一组自定义对象。

我知道我不能将自定义对象放在 NSUserdefaults 中，所以我通过 NSKeyedArchiver - NSKeyedUnarchiver 对它们进行编码，以便在 NSData 中转换它们。

这是我的自定义课程

    #import "Counter.h"

@implementation Counter

@dynamic city;
@dynamic address;
@dynamic event;
@dynamic date;
@dynamic time;
@dynamic counter;
@dynamic latitude;
@dynamic longitude;


- (void)encodeWithCoder:(NSCoder *)encoder
{

    //Encode properties, other class variables, etc
    [encoder encodeObject:self.city forKey:@"city"];
    [encoder encodeObject:self.address forKey:@"address"];
    [encoder encodeObject:self.event forKey:@"event"];
    [encoder encodeObject:self.date forKey:@"date"];
    [encoder encodeObject:self.time forKey:@"time"];
    [encoder encodeObject:self.counter forKey:@"counter"];
    [encoder encodeObject:self.latitude forKey:@"latitude"];
    [encoder encodeObject:self.longitude forKey:@"longitude"];


}
- (id)initWithCoder:(NSCoder *)decoder
{
    self = [super init];
    if( self != nil )
    {
        self.city = [decoder decodeObjectForKey:@"city"];
        self.address = [decoder decodeObjectForKey:@"address"];
        self.event = [decoder decodeObjectForKey:@"event"];
        self.date = [decoder decodeObjectForKey:@"date"];
        self.time = [decoder decodeObjectForKey:@"time"];
        self.counter = [decoder decodeObjectForKey:@"counter"];
        self.latitude = [decoder decodeObjectForKey:@"latitude"];
        self.longitude = [decoder decodeObjectForKey:@"longitude"] ;

    }
    return self;
}

@end

这是应用程序内部的编码功能。

- (void)saveInUserDefault {

//Counter is my Custom class
//I'm Using MagicalRecord
NSArray *array = [Counter MR_findAllSortedBy:@"date" ascending:NO];

NSMutableArray *defaultMutableArray = [NSMutableArray arrayWithCapacity:array.count];

NSUserDefaults *defaultArray = [[NSUserDefaults alloc] initWithSuiteName:@"group.LorenzoLoRe.Everycount"];


for (Counter *cnt in array) {
    NSData *dataToDefault = [NSKeyedArchiver archivedDataWithRootObject:cnt];
    [defaultMutableArray addObject:dataToDefault];
}


[defaultArray setObject:defaultMutableArray forKey:@"counts"];
[defaultArray synchronize];
}

此时看日志，数据好像是在NSUserDefaults中写入的

在这里我尝试检索扩展中的数据

-

 (void)takeLastCounts {

    NSUserDefaults *defaultArray = [[NSUserDefaults alloc] initWithSuiteName:@"group.company.product"];
    [defaultArray synchronize];

    NSArray  *dummyArray = [defaultArray arrayForKey:@"counts"];;
    NSMutableArray *arrayFromDefault= NULL;
    Counter *cter = nil;


   for (NSData *data in dummyArray) {
       cter = [NSKeyedUnarchiver unarchiveObjectWithData:data];
       [arrayFromDefault addObject:cter];
    }

    self.cnt_1 = arrayFromDefault[0];
    self.cnt_2 = arrayFromDefault[1];

    NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterShortStyle];

    self.eventLabel.text = self.cnt_1.event;
    self.dateLabel.text = [formatter stringFromDate:self.cnt_1.date];
    self.counterLabel.text = self.cnt_1.counter.stringValue;
    self.timeLabel.text = self.cnt_1.time;

}

当我尝试执行扩展时，没有错误，只是空数组。特别是NSArray *dummyArray = [defaultArray arrayForKey:@"counts"];似乎是空的，所以某处数据不流动。

我做错了什么？？

任何类型的提示将不胜感激。

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0 回答 0