NSJSONSerialization不将数据存储到数组中

I have this code in AppDelegate.m :

我在AppDelegate.m中有这个代码：

    NSError *error;
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"City" ofType:@"json"];
    NSData *data = [NSData dataWithContentsOfFile:filePath];
    NSArray *json = [NSJSONSerialization JSONObjectWithData:data
                                                    options:NSJSONReadingAllowFragments error:&error];


    NSLog(@"data : %@",data);
    NSLog(@"json : %@",json[0]);

And data has content but NSJSONSerialization is not storing it into variable json (it shows (null))

数据有内容，但NSJSONSerialization没有将它存储到变量json中（它显示（null））

My json file content :

我的json文件内容：

[

“Result”:
 {
   "ID":"3",
   "Name":"Ambegaon",
   "Distid":"1050114"
 },
 {
   "ID":"4",
   "Name":"Aundh",
   "Distid":"1050114"
 }
]

Things i have tried:

我尝试过的事情：

NSDictionary NSArray both mutable and non mutable

NSDictionary NSArray既可变又不可变
Changed City.json location

改变了City.json的位置
Different options like NSJSONReadingMutableContainers NSJSONReadingMutableLeaves kNilOptions

不同的选项，如NSJSONReadingMutableContainers NSJSONReadingMutableLeaves kNilOptions

2 个解决方案

#1

It happened because your JSON has invalid format. It not equal array. You need have

这是因为您的JSON格式无效。它不等于数组。你需要

[
 {
   "ID":"3",
   "Name":"Ambegaon",
   "Distid":"1050114"
 },
 {
   "ID":"4",
   "Name":"Aundh",
   "Distid":"1050114"
 }
]

without Result key or change your json and parse code to

没有Result键或更改您的json和解析代码

{
   "Result" : [{
      "ID":"3",
      "Name":"Ambegaon",
      "Distid":"1050114"
    },
    {
      "ID":"4",
      "Name":"Aundh",
      "Distid":"1050114"
    }]
}

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data
                                                    options:NSJSONReadingAllowFragments error:&error];
NSArray *arr = json[@"Result"];

#2

The method jsonObjectWithData will fail if the JSON data is badly formed.

如果JSON数据格式错误，jsonObjectWithData方法将失败。

There must be something wrong with the syntax of your JSON data. You can convert the NSData to a string and log that. You might also check the error you're getting back from the function.

JSON数据的语法肯定有问题。您可以将NSData转换为字符串并记录该字符串。您还可以检查从函数中返回的错误。

#1