Question

我有一个我正在解析的JSON数组字典。我的问题是我想在数组中显示所有符合我所需的键值对（键是名称）的记录，我只在我的tableview中显示最后一个。现在差不多凌晨4点了，我从上午10点起就开始绕圈了，所以任何帮助都会非常感激，因为我忽略了一些东西。谢谢！

NSArray *jsonDataArray = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
self.someArray = [[NSMutableArray alloc]init];

for (NSMutableDictionary *dictionary in jsonDataArray)
{
    NSMutableArray* Response_array = [dictionary objectForKey:@"loans"];
    NSLog(@"Array: %@", Response_array);

    NSDictionary *dict = [Response_array objectAtIndex:0];
    NSLog(@"dict is %@",dict);

    self.someMutableArray = [dict objectForKey:@"name"];

    NSLog(@"what is name %@",self.someMutableArray);
}

我试过了：

NSArray *jsonDataArray = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];   

for ( int i = 0 ; i < jsonDataArray.count ; i++ )
{
    self.someDictionary = [[jsonDataArray objectAtIndex:i] objectForKey:@"loans"];
    self.someMutableArray = [self.someDictionary valueForKey:@"name"];
    NSLog(@"MutableArray inside is %@", self.someMutableArray);    
} 

NSLog(@"MutableArray outside is %@",self.someMutableArray);

在我最后一次尝试时，我移动了valueForKey的位置：@“name”：

NSArray *jsonDataArray = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
self.someMutableArray = [NSMutableArray array];


for ( int i = 0 ; i < jsonDataArray.count ; i++ )
{
    self.someMutableArray = [[jsonDataArray objectAtIndex:i] objectForKey:@"loans"];
}

NSLog(@"someMutableArray outside is %@",self.someMutableArray);

然后在我的tableview的cellForRowAtIndexPath中，我有：

NSDictionary *dict2 = [self.someMutableArray objectAtIndex:indexPath.row];
NSLog(@"what is dict2 %@", dict2);
cell.textLabel.text = [dict2 valueForKey:@"name"];

以下是我的JSON的设置：

[
  -{
     id: 285,
     name: name 1,
    -loans: [
         -{
            id: 42,
            name: "Shark"
          }
     ]
   },
  -{
     id: 286,
     name: name 2,
     -loans: [
          -{
             id: 50,
             name: "Flipper"
           }
      ]
   }
]

Answer 1

为什么你在拥有数组时要进行循环？只需使用JSON响应分配您的数组

NSArray *jsonDataArray = [[NSArray alloc] initWithArray:[NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error]];

这个数组将是你的数据源，所以从delegate和你的rowAtIndexPath返回它的计数

NSDictionary *dictObject = [jsonDataArray objectAtIndex:indexPath.row];
cell.textLabel.text = [dictObject valueForKey:@"Shark"];

对于自定义单元格来说

NSDictionary *dictObject = [jsonDataArray objectAtIndex:indexPath.row];
cell.textLabel1.text = [dictObject valueForKey:@"Shark"];
cell.textLabel2.text = [dictObject valueForKey:@"Flipper"];

Answer 2

从我的例子：

我的JSON文件：

{
status: "Success",
totalcount: "25",
currentcount: "25",
ticketreplies: [
  {
ticket_id: "5348CD97",
subject: "bA==",
posteduser: "10025",
postedby: "Admin (Paul)",
message: "PGRpdj4",
post_id: "75",
posted_on: "23 Apr 2014 12:58 IST",
photo: "10025.jpg"
},
{
ticket_id: "5348F754",
subject: "Y2FsbCBv",
posteduser: "10025",
postedby: "Admin (John)",
message: "PGRpdj4",
post_id: "74",
posted_on: "23 Apr 2014 11:46 IST",
photo: "10025.jpg"
}
    ]
}

我的实施：

self.dic_response=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
NSLog(@"Dictionary: %@",self.dic_response);
NSLog(@"Dictionary: %i",[self.dic_response count]);

NSString usrTicketId=[self.dic_response valueForKey:@"totalcount"];
NSLog(@"Ticket_Id: %@",usrTicketId);

NSArray arrTicketRplys=[self.dic_response valueForKey:@"ticketreplies"];
NSLog(@"Ticket_Id: %@",arrTicketRplys);

for(NSArray *tmpArr1 in arrTicketRplys){
    if([[tmpArr1 valueForKey:@"posteduser"] isEqualToString:@"10025"]){
        NSString *strPostUserName=[tmpArr1 valueForKey:@"postedby"];
        NSLog(@"Posted BY: %@", strPostUserName);
    }
}

//当然，它的逻辑适用于读取特定对象键和值。 //主要是，这些代码避免使用objectAtIndex:4等静态值。

Answer 3

self.dic_response=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
if([self.dic_response valueForKey:@"success"]){
NSMutableArray *resultArray = [NSMutableArray alloc];
for(NSDictionary *tmpArr1 in self.dic_response){
{
    [resultArray addObject:tmpArr1];
    //this resultArray have whole array value.
}

}

希望这有助于你

Answer 4

for ( int i = 0 ; i <jsonDataArray.count ; i++ )
{
    self.someDictionary = [[jsonDataArray objectAtIndex:i] objectForKey:@"loans"];
    [self.someMutableArray  addObject:[self.someDictionary valueForKey:@"name"]]
    NSLog(@"MutableArray inside is %@", self.someMutableArray);    
} 
NSLog(@"MutableArray outside is %@",self.someMutableArray);

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解析为数组的JSON Parse iOS字典数组仅显示tableview中的最后一个对象

4 个答案: