objective-c - 将JSON对象导入NSArray

Question

尝试在Objective-C中解析此JSON对象，并使用这些对象创建NSArray。
第一个值是一个计数器，并且特定于该对象。所有其他值都是唯一的。

{ "myData": [
["1","1","110","dollar","8.0","2.8","0.1","11.6"],
["2","1","110","euro","4.0","3.2","1.5","4.4"],
["3","1","120","rupier","6.0","2.9","1.3","10.8"],
["4","1","120","dinero","4.0","3.3","1.5","4.4"],
["5","2","130","drahmer","8.0","2.9","1.3","11.2"],
] }

试过这段代码:

 NSDictionary* json = [NSJSONSerialization 
                          JSONObjectWithData:myData
                          options:kNilOptions 
                          error:&error];

    NSArray *currencyInformation = [json objectForKey:@"myData"];

但是物体不在那里。虽然数组的数量为5。

Answer 1

数组中的每个对象都是数组本身，因此:

NSDictionary* json = [NSJSONSerialization 
                      JSONObjectWithData:myData
                      options:kNilOptions 
                      error:&error];

NSArray *currencyInformation = [json objectForKey:@"myData"];

for (NSArray *info in currencyInformation) {
    // Then access each "column" with [info objectAtIndex:0,1,2,3,...]
}