无法从 iOS 中的 NSArray 转换为正确格式的 NSString

Question

我想在 API 调用中发送以下 JSON 参数，但下面使用的联系人数组字符串令人困惑，我无法在 [=25= 中形成它].下面是在 Rest 客户端中测试的工作 JSON 参数。如何在 iOS?

中形成包含联系人数组的类似字符串模式

工作JSON参数，

{
  "contacts": "[\"5555228243\",\"919677012480\"]",
  "phno": "919791871448",
  "device": "iphone",
  "key": "key",
  "name": "Logunath Subramaniyan",
  "files": "files"
}

我下面的转换代码，

NSMutableDictionary *reqData = [[NSMutableDictionary alloc]init];
[reqData setObject:[FMCoredDataUtility fetchDetailForKey:kmobileNumber] forKey:@"phno"];
[reqData setObject:[FMCoredDataUtility fetchUserNameForKey:kuserName ]forKey:@"name"];
[reqData setObject:@"iphone" forKey:@"device"];
[reqData setObject:@"key" forKey:@"key"];
[reqData setObject:[self getMobileContacts ] forKey:@"contacts"];
[reqData setObject:@"files" forKey:@"files"];

-(NSArray*)getMobileContacts{
    contactNumbers = [addUtility getContactNumbers];                       
    for ( int i = 0; i < [contactNumbers count]; i++) {
        [filteredContacts addObject:[[[contactNumbers objectAtIndex:i] componentsSeparatedByCharactersInSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]] componentsJoinedByString:@""]];
    }
    return filteredContacts;
}

帧错误JSON参数，

{
  "contacts": [
    "5555228243",
    "5554787672",
    "4085555270",
    "4085553514",
    "5556106679",
    "5557664823",
    "7075551854",
    "8885555512",
    "8885551212",
    "5555648583",
    "4155553695",
    "919677012480"
  ],
  "phno": "919791871448",
  "device": "iphone",
  "key": "key",
  "name": "Logunath Subramaniyan",
  "files": "files"
}

我在控制台中遇到的错误是，

value __NSCFConstantString * @"JSON text did not start with array or object and option to allow fragments not set." 0x000000010cf2ed50

Answer 1

这里有一种方法可以将 ios 数组转换为 JSON 字符串

    NSArray *contactsArray = [self getMobileContacts ];//This will be your contacts array
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:myArray options:NSJSONWritingPrettyPrinted error:&error];
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
[reqData setObject:jsonString forKey:@"contacts"];

无法从 iOS 中的 NSArray 转换为正确格式的 NSString

Unable to convert to a proper format of NSString from NSArray in iOS

json

nsstring

nsarray

ios