我如何在Objective-c中解析这个json模式

Question

我有一个寻找加油站的iOS应用程序，我想添加燃料价格。

我找到了一个Opendata与数据库，但我不能解析数组"字段"one_answers"price_e10"，只有数组"记录"。

下面是一个JSON SCHEMA的例子(我认为它是多维数组):

"records":[
{
"datasetid":"prix_des_carburants_j_7",
"recordid":"fa74ca1fdf6938333d2bc1013623b66771557b31",
"fields":{
"price_e10":1.389,

下面是我在Objective-c中的代码示例:

NSError *e;
    NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &e];
    NSArray *arrayResult =[dict objectForKey:@"records"];
    arraySmpl = [NSMutableArray arrayWithArray:arrayResult];
    NSLog(@" MULTIPLE ARRAY : %@ ",arrayResult);
    rowsInSection = [arraySmpl count] + 1;

谢谢你的帮助

Answer 1

我认为数据来自服务器。

NSDictionary *globalDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error];
NSArray *recordsArray = [globalDict valueForKey:@"records"];
for (NSDictionary *dict in recordsArray) {
    NSDictionary *fieldsDict = [dict valueForKey:@"fields"];
    NSString *fuelPrice = [fieldsDict valueForKey:@"price_e10"];
    NSLog(@"fuelPrice: %@", fuelPrice);
}

输出:

fuelPrice: 1.389

Answer 2

请按照以下步骤操作:

 NSArray *rec = [allDict objectForKey:@"records"];  
     for (NSDictionary *str in loans) {
     NSDictionary *conn = [str objectForKey:@"fields"];
            NSStirng *get_price = [conn objectForKey:@"price_e10"];
    }

现在字符串"get_price"的值为1.389，

Answer 3

就像上面提到的"Price_e10"一样，您可以直接访问price_gazole price_sp95, price_sp98。

NSArray *rec = [allDict objectForKey:@"records"];  
         for (NSDictionary *str in loans) {
         NSDictionary *conn = [str objectForKey:@"fields"];
                NSStirng *get_price = [conn objectForKey:@"price_e10"];
 NSStirng *price_gazole = [conn objectForKey:@"price_gazole"]; //output: 1.205
 NSStirng *price_sp95 = [conn objectForKey:@"price_sp95"];  //output :1.425
 NSStirng *price_sp98 = [conn objectForKey:@"price_sp98"]; //output 1.465
        }