ios - 如何为JSON字典添加值？

Question

我有一个响应对象，看起来像这样:

[
  {
    "ser": "XXX-Demo-L",
    "name": "XXX-Demo-L",
    "statusId": 2,
    "buildVersion": "XXX",
    "IP": "192.168.128.123",
    "priority": 1,
    "bandwidthUpload": 5174.68,
    "bandwidthDownload": 1554.88,
    "bandwidthInternal": 37.29,
    "totalBandwidthUpload": null,
    "totalBandwidthDownload": null,
    "totalBandwidthInternal": null,
    "usage": null,
    "protectedDevices": [
      {
        "deviceType": 3,
        "securityModeId": 1,
        "statusId": 2,
        "uniqueId": "Samsung TV",
        "deviceName": "Samsung TV",
        "IP": "196.128.0.5",
        "MAC": null,
        "priority": 1,
        "bandwidthUpload": 5184.36,
        "bandwidthDownload": 1954.81,
        "bandwidthInternal": 98.64,
        "totalBandwidthUpload": null,
        "totalBandwidthDownload": null,
        "totalBandwidthInternal": null,
        "usage": null,
        "endpointsConnected": []
      },
      {
        "deviceType": 3,
        "securityModeId": 1,
        "statusId": 2,
        "uniqueId": "AARP-Demo-L-100",
        "deviceName": "AARP-Demo-L-100",
        "IP": "196.128.0.100",
        "MAC": null,
        "priority": 2,
        "bandwidthUpload": 5032,
        "bandwidthDownload": 1451.78,
        "bandwidthInternal": 81.96,
        "totalBandwidthUpload": null,
        "totalBandwidthDownload": null,
        "totalBandwidthInternal": null,
        "usage": null,
        "endpointsConnected": [
          {
            "endpoint": "208.91.197.104",
            "ip": "208.91.197.104",
            "domain": null,
            "latitude": 18.4167,
            "longitude": -64.6167
          },
          {
            "endpoint": "209.85.128.2",
            "ip": "209.85.128.2",
            "domain": null,
            "latitude": 37.4192,
            "longitude": -122.0574
          },
          {
            "endpoint": "98.137.236.24",
            "ip": "98.137.236.24",
            "domain": "yahoo.com",
            "latitude": 37.4249,
            "longitude": -122.0074
          },
          {
            "endpoint": "204.79.197.212",
            "ip": "204.79.197.212",
            "domain": null,
            "latitude": 47.6801,
            "longitude": -122.1206
          }
        ]
      },

我正在尝试将所有端点数据添加到单个数组，但是需要设备名称与每个端点一起使用(每个设备可以有多个端点)。

这是我遍历此响应对象的代码如下所示:

NSLog(@"TELEMETRY DETAILS RESULTS ARRAY: %@", resultsArray);

        self.telemetryData = resultsArray;
        self.deviceListData = [resultsArray[0] valueForKey:@"protectedDevices"];

        self.endpointData = [[NSMutableArray alloc] init];

        for(int i = 0; i < [self.deviceListData count]; i++){

            if ([self.deviceListData[i] valueForKey:@"endpointsConnected"]) {

                [self.endpointData addObjectsFromArray:[self.deviceListData[i] valueForKey:@"endpointsConnected"]];

            }

        }

        NSLog(@"Endpoint data array: %@", self.endpointData);

        [self.tableView reloadData];

这是我的新数据结构的样子(我想将每个端点的设备名称添加为键/值对):

Endpoint data array: (
        {
        domain = "<null>";
        endpoint = "208.91.197.104";
        ip = "208.91.197.104";
        latitude = "18.4167";
        longitude = "-64.61669999999999";
    },
        {
        domain = "<null>";
        endpoint = "209.85.128.2";
        ip = "209.85.128.2";
        latitude = "37.4192";
        longitude = "-122.0574";
    },
        {
        domain = "yahoo.com";
        endpoint = "98.137.236.24";
        ip = "98.137.236.24";
        latitude = "37.4249";
        longitude = "-122.0074";
    },

如何将设备名称添加到端点词典数组中？

Answer 1

您只能通过将NSDictionary及其叶子转换为Mutable来执行此操作，这里有多个选项，

首先，当您从接收到的数据中解析JSON时，使用NSJSONReadingMutableLeaves作为读取选项，它将为您提供所有可变数据，如下所示

NSMutableDictionary *dictionary=[NSJSONSerialization JSONObjectWithData:[NSData data] options:NSJSONReadingMutableLeaves error:nil];

如果不满足上述条件，则可以使用以下代码将任何 NSArray或 NSDictionary对象转换为可变对象。

-(id)deepMutableCopy
{
    if ([self isKindOfClass:[NSArray class]]) {
        NSArray *oldArray = (NSArray *)self;
        NSMutableArray *newArray = [NSMutableArray array];
        for (id obj in oldArray) {
            [newArray addObject:[obj deepMutableCopy]];
        }
        return newArray;
    } else if ([self isKindOfClass:[NSDictionary class]]) {
        NSDictionary *oldDict = (NSDictionary *)self;
        NSMutableDictionary *newDict = [NSMutableDictionary dictionary];
        for (id obj in oldDict) {
            [newDict setObject:[oldDict[obj] deepMutableCopy] forKey:obj];
        }
        return newDict;
    } else if ([self isKindOfClass:[NSSet class]]) {
        NSSet *oldSet = (NSSet *)self;
        NSMutableSet *newSet = [NSMutableSet set];
        for (id obj in oldSet) {
            [newSet addObject:[obj deepMutableCopy]];
        }
        return newSet;
#if MAKE_MUTABLE_COPIES_OF_NONCOLLECTION_OBJECTS
    } else if ([self conformsToProtocol:@protocol(NSMutableCopying)]) {
        // e.g. NSString
        return [self mutableCopy];
    } else if ([self conformsToProtocol:@protocol(NSCopying)]) {
        // e.g. NSNumber
        return [self copy];
#endif
    } else {
        return self;
    }
}

像这样使用

NSMutableDictionary *dictionary=[originaldictionary deepMutableCopy];

最后，当您有了 Mutable字典时，只需迭代并修改值即可，如下所示没有问题

for(NSMutableDictionary *device in dictionary[@"protectedDevices"]){
     NSMutableArray *endpoints=[[NSMutableArray alloc] init];
     [device setObject:endpoints forKey:@"endpointsConnected"];
}

您完成了。

希望对您有帮助，干杯。