ios - 从 NSDictionary 获取值

Question

大家好，我是 iOS 开发的新手。我想获得响应并将这些值添加到变量。

我试过了，但我得到的响应低于此值。我不明白为什么此响应中有斜线。

@"[{\"VisitorID\":\"2864983a-e26b-441a-aedf-84e2a1770b8e\",\"ProfileID\":\"69c02265-abca-4716-8a2f-ac5d642f876a\",\"CompanyID\":null,\"VisitorName\":\"kanasalingam\",\"OperatorName\":\"baman\",\"Image\":null,\"isocode\":\"lk\",\"CurrentOperator\":[\"69c02265-abca-4716-8a2f-ac5d642f876a\"]},{\"VisitorID\":\"133bc108-b3bf-468a-9397-e1b0dba449db\",\"ProfileID\":\"69c02265-abca-4716-8a2f-ac5d642f876a\",\"CompanyID\":null,\"VisitorName\":\"kumar\",\"OperatorName\":\"baman\",\"Image\":null,\"isocode\":\"lk\",\"CurrentOperator\":[\"69c02265-abca-4716-8a2f-ac5d642f876a\"]}]"

我试过这个:

- (void) sendOtherActiveChats:(NSDictionary *) chatDetails{
    NSLog(@"inside sendOtherActiveChats");
    NSLog(@"otherDetails  Dictionary : %@ ", chatDetails);

    NSString *VisitorID = [chatDetails objectForKey:@"VisitorID"];
    NSString *ProfileID = [chatDetails objectForKey:@"ProfileID"];
    NSString *CompanyID = [chatDetails objectForKey:@"CompanyID"];
    NSString *VisitorName = [chatDetails objectForKey:@"VisitorName"];
    NSString *OperatorName = [chatDetails objectForKey:@"OperatorName"];
    NSString *isocode = [chatDetails objectForKey:@"isocode"];

    NSLog(@"------------------------Other Active Chats -----------------------------------");
    NSLog(@"VisitorID      : %@" , VisitorID);
    NSLog(@"ProfileID      : %@" , ProfileID);
    NSLog(@"CompanyID      : %@" , CompanyID);
    NSLog(@"VisitorName    : %@" , VisitorName);
    NSLog(@"OperatorName   : %@" , OperatorName);
    NSLog(@"countryCode: %@" , isocode);
    NSLog(@"------------------------------------------------------------------------------");

}

谁能帮我从这个字符串中获取值？

Answer 1

您正在获得字典数组作为响应，但您的响应是字符串形式的，因此您可以使用 NSJSONSerialization 将其转换为 NSArray，就像这样将您的响应字符串转换为NSData，然后使用该数据和 JSONObjectWithData: 从中获取数组。

NSString *jsonString = @"[{\"VisitorID\":\"2864983a-e26b-441a-aedf-84e2a1770b8e\",\"ProfileID\":\"69c02265-abca-4716-8a2f-ac5d642f876a\",\"CompanyID\":null,\"VisitorName\":\"kanasalingam\",\"OperatorName\":\"baman\",\"Image\":null,\"isocode\":\"lk\",\"CurrentOperator\":[\"69c02265-abca-4716-8a2f-ac5d642f876a\"]},{\"VisitorID\":\"133bc108-b3bf-468a-9397-e1b0dba449db\",\"ProfileID\":\"69c02265-abca-4716-8a2f-ac5d642f876a\",\"CompanyID\":null,\"VisitorName\":\"kumar\",\"OperatorName\":\"baman\",\"Image\":null,\"isocode\":\"lk\",\"CurrentOperator\":[\"69c02265-abca-4716-8a2f-ac5d642f876a\"]}]";
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

NSError *e;
NSMutableArray *jsonArray = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&e];

现在遍历数组并从中访问每个字典。

for (NSDictionary *dic in jsonArray) {
     NSLog(@"%@",[dic objectForKey:@"VisitorID"]);
     ... and so on.
}