Ios 将一个NSMutableDictionary分配给另一个NSMutableDictionary，给出问题

我有两本字典

//ServiceResponse是NSMutableDictionary

     NSMutableDictionary *LocalDict=[[NSMutableDictionary alloc]initWithDictionary:serviceResponse];

当我在LocalDict中做了一些更改时，ServiceResponse也在更改。我认为LocalDict引用了ServiceResponse。我做了很多更改，但无法解决这个问题。请告诉我如何解决这个问题。serviceResponse中发生更改的原因

            if ([[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"]!=[NSNull null]) {
                if ([[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"]count]>0) {
                    if ([[[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]!=[NSNull null]) {

                        NSMutableDictionary *LocalDict=[[NSMutableDictionary alloc]initWithDictionary:serviceResponse];


                        for (int j=0; j< [[[[[[LocalDict valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"] count] ;j++) {

                            for (int i=1; i<=5; i++) {

                                NSURL * imageURL = [NSURL URLWithString:[[[[[[[LocalDict valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]objectAtIndex:j] valueForKey:[NSString stringWithFormat:@"ThumbNailImage%d",i]]];

                                if (![[imageURL absoluteString]isEqualToString:@""]) {

                                    NSData * imageData = [[NSData alloc] initWithContentsOfURL:imageURL];

                                    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                                    NSString *documentsDirectory = [paths objectAtIndex:0];
                                    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@%d.png",[[[[[[[LocalDict valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]objectAtIndex:j] valueForKey:@"ProductID"],i]];

                                    [imageData writeToFile:savedImagePath atomically:NO];

                                    [[[[[[[LocalDict valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]objectAtIndex:j]setValue:savedImagePath forKey:[NSString stringWithFormat:@"ThumbNailImage%d",i]];

                                }

                            }
                        }


                        [dbManager insertProductsDetails:[[[[[LocalDict valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Products"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]];

                    }
                }                    
            }

            /*
             *  Favourites details
             */
            if ([[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Favourite"]!=[NSNull null]) {
                if ([[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Favourite"]count]>0) {
                    if ([[[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Favourite"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]!=[NSNull null]) {
                        [dbManager insertFavouritesDetails:[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"Favourite"]];
                    }
                }                    
            }

            /*
             *  Rep Details
             */
            if ([[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"RepDetails"]!=[NSNull null]) {
                if ([[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"RepDetails"]count]>0) {
                    if ([[[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"RepDetails"] objectAtIndex:0]valueForKey:@"OutputProductsDetails"]!=[NSNull null]) {
                        [dbManager insertRepUserDetails:[[[serviceResponse valueForKey:@"GetAllDetailsResult"]objectAtIndex:0]valueForKey:@"RepDetails"]];
                    }
                }
            }

if（[[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“Products”]！=[NSNull null]）{
如果（[[[serviceResponse valueForKey:@“GetAllDetailsResult”]对象索引：0]valueForKey:@“Products”]计数]>0）{
如果（[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“产品”]objectAtIndex:0]valueForKey:@“OutputProductsDetails”！=[NSNull null]）{
NSMutableDictionary*LocalDict=[[NSMutableDictionary alloc]initWithDictionary:serviceResponse]；
对于（int j=0；j<[LocalDict valueForKey:@“GetAllDetailsResult”]对象索引：0]valueForKey:@“产品”]对象索引：0]valueForKey:@“OutputProductsDetails”]计数]；j++）{
对于（int i=1；i0）{
如果（[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“Favorite”]objectAtIndex:0]valueForKey:@“OutputProductsDetails”！=[NSNull null]）{
[dbManager插入收藏夹详细信息：[[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“收藏夹”]；
}
}                    
}
/*
*代表详细信息
*/
如果（[[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“RepDetails”]！=[NSNull null]）{
如果（[[[serviceResponse valueForKey:@“GetAllDetailsResult”]对象索引：0]valueForKey:@“RepDetails”]计数]>0）{
如果（[serviceResponse valueForKey:@“GetAllDetailsResult”]objectAtIndex:0]valueForKey:@“RepDetails”]objectAtIndex:0]valueForKey:@“OutputProductsDetails”！=[NSNull null]）{
[dbManager insertRepUserDetails:[[serviceResponse valueForKey:@“GetAllDetailsResult”]对象索引：0]valueForKey:@“RepDetails”]；
}
}
}

试试这个

 NSMutableDictionary *LocalDict=[[[NSMutableDictionary alloc]initWithDictionary:serviceResponse] mutableCopy];

注意：它是一个浅拷贝。它不会在可变字典中生成不可变的对象

---

希望有帮助。

这个答案可以通过深度复制解决您的问题

这是一个很好的分类

@implementation NSDictionary (SPDeepCopy)

- (NSDictionary*) deepCopy {
    unsigned int count = [self count];
    id cObjects[count];
    id cKeys[count];

    NSEnumerator *e = [self keyEnumerator];
    unsigned int i = 0;
    id thisKey;
    while ((thisKey = [e nextObject]) != nil) {
        id obj = [self objectForKey:thisKey];

        if ([obj respondsToSelector:@selector(deepCopy)])
            cObjects[i] = [obj deepCopy];
        else
            cObjects[i] = [obj copy];

        if ([thisKey respondsToSelector:@selector(deepCopy)])
            cKeys[i] = [thisKey deepCopy];
        else
            cKeys[i] = [thisKey copy];

        ++i;
    }

    NSDictionary *ret = [[NSDictionary dictionaryWithObjects:cObjects forKeys:cKeys count:count] retain];

    // The newly-created dictionary retained these, so now we need to balance the above copies
    for (unsigned int i = 0; i < count; ++i) {
        [cObjects[i] release];
        [cKeys[i] release];
    }

    return ret;
}
- (NSMutableDictionary*) mutableDeepCopy {
    unsigned int count = [self count];
    id cObjects[count];
    id cKeys[count];

    NSEnumerator *e = [self keyEnumerator];
    unsigned int i = 0;
    id thisKey;
    while ((thisKey = [e nextObject]) != nil) {
        id obj = [self objectForKey:thisKey];

        // Try to do a deep mutable copy, if this object supports it
        if ([obj respondsToSelector:@selector(mutableDeepCopy)])
            cObjects[i] = [obj mutableDeepCopy];

        // Then try a shallow mutable copy, if the object supports that
        else if ([obj respondsToSelector:@selector(mutableCopyWithZone:)])
            cObjects[i] = [obj mutableCopy];

        // Next try to do a deep copy
        else if ([obj respondsToSelector:@selector(deepCopy)])
            cObjects[i] = [obj deepCopy];

        // If all else fails, fall back to an ordinary copy
        else
            cObjects[i] = [obj copy];

        // I don't think mutable keys make much sense, so just do an ordinary copy
        if ([thisKey respondsToSelector:@selector(deepCopy)])
            cKeys[i] = [thisKey deepCopy];
        else
            cKeys[i] = [thisKey copy];

        ++i;
    }

    NSMutableDictionary *ret = [[NSMutableDictionary dictionaryWithObjects:cObjects forKeys:cKeys count:count] retain];

    // The newly-created dictionary retained these, so now we need to balance the above copies
    for (unsigned int i = 0; i < count; ++i) {
        [cObjects[i] release];
        [cKeys[i] release];
    }

    return ret;
}

@end

@implementation-NSDictionary（SPDeepCopy）
-（NSDictionary*）深度复制{
无符号整数计数=[自计数]；
id对象[计数]；
id cKeys[计数]；
N分子*e=[自键枚举器]；
无符号整数i=0；
id此键；
而（（thisKey=[e nextObject]）！=nil）{
id obj=[self-objectForKey:thisKey]；
if（[obj respondsToSelector:@selector（deepCopy）]）
cObjects[i]=[obj deepCopy]；
其他的
cObjects[i]=[obj copy]；
如果（[此键响应选择器：@selector（deepCopy）]）
cKeys[i]=[thisKey deepCopy]；
其他的
cKeys[i]=[此密钥副本]；
++一,；
}
NSDictionary*ret=[[NSDictionary Dictionary WithObjects:cObjects-forKeys:cKeys-count:count]retain]；
//新创建的词典保留了这些，所以现在我们需要平衡上述副本
for（无符号整数i=0；i

我尝试了这个，它解决了我的问题。谢谢大家的建议和帮助

                NSData *buffer;
                  NSMutableDictionary *dictLocal;

                        // Deep copy "all" objects in _dict1 pointers and all to _dict2
                buffer = [NSKeyedArchiver archivedDataWithRootObject: serviceResponse];
                dictLocal = [NSKeyedUnarchiver unarchiveObjectWithData: buffer];  

---

尝试根据localDictionary中的键设置服务响应字典。多么糟糕的数据结构…因为localDictionary不是serviceResponse的深度副本，所以您应该创建自己的深度副本，但我需要与服务响应字典相同的格式。如果不更改格式，是否有其他方法可以做到这一点uld已经提到了你已经尝试过的内容，并且在有人根据提供的信息试图帮助你时，你不应该指责别人投了反对票。提示：不是他；-）好吧，我错了。只是希望看看答案有什么问题，这样我们都能从中受益。

[dict mutableCopy]