我的 php 脚本以如下所示的格式向我的 swift iOS 应用程序发送 JSON 响应。使用以下代码将其解析为 NSArray
:
let jsonArray = try NSJSONSerialization.JSONObjectWithData(data_fixed!, options:[])
我在我的 swift 代码中创建了以下对象:
class Friend : NSObject {
var name: String?
var id: String?
var profile_pic : String?
}
class Message : NSObject {
var id: String?
var text: String?
var date: NSDate?
var sender: Friend?
}
class Chat : NSObject {
var id : String?
var chat_partner : Friend?
var chat_messages : [Message]?
}
我现在想做的是循环遍历下面的 NSArray
,并将数据提取到我的对象实例中,所以在下面的示例中简单来说,我想创建两个聊天对象带有 id 的 1 和 2,以及所有适当的变量。我不确定如何快速正确地执行这样的循环。
JSON 响应:
Array: (
{
chatId = 1;
message = {
1 = {
chatId = 1;
"message_id" = 24242241;
sender = 1233;
text = "hello i am";
timestamp = "2016-05-24 17:13:08";
};
2 = {
chatId = 1;
"message_id" = 421421;
sender = 1233;
text = great;
timestamp = "2016-05-24 17:15:08";
};
};
"user1_id" = 1233;
"user1_name" = David;
"user1_profile_pic" = "http://graph.facebsddsaadsadsook.com/1233/picture?type=large";
"user2_id" = 8543211123;
"user2_name" = 0;
"user2_profile_pic" = "<null>";
},
{
chatId = 2;
"user1_id" = 23413524635;
"user1_name" = 0;
"user1_profile_pic" = "<null>";
"user2_id" = 1233;
"user2_name" = David;
"user2_profile_pic" = "http://graph.facebsdadsook.com/1233/picture?type=large";
}
)
更新:代码尝试
var count_chats = 0;
for anItem in jsonArray as! [Dictionary<String, AnyObject>] {
let curr_chat = Chat()
if let chatId = anItem["chatId"] as? String {
curr_chat.id = chatId
}
let friend = Friend()
let user1id = anItem["user1_id"] as! String
let user2id = anItem["user2_id"] as! String
if (user1id == userID) {
if let user2id = anItem["user2_id"] as? String {
friend.id = user2id
}
if let user2name = anItem["user2_name"] as? String {
friend.name = user2name
}
if let user2profilepic = anItem["user2_profile_pic"] as? String {
friend.profile_pic = user2profilepic
}
}
else if (user2id == userID){
if let user1id = anItem["user1_id"] as? String {
friend.id = user1id
}
if let user1name = anItem["user1_name"] as? String {
friend.name = user1name
}
if let user1profilepic = anItem["user1_profile_pic"] as? String {
friend.profile_pic = user1profilepic
}
}
print("passed")
curr_chat.chat_partner = friend
var chat_messages : [Message]? = nil
var count_messages = 0;
if let dataArray = anItem["message"] as? NSArray {
for onemessage in dataArray as! [Dictionary<String, AnyObject>] {
let curr_message = Message()
if let messageid = onemessage["message_id"] as? String {
curr_message.id = messageid
}
if let messagedate = onemessage["timestamp"] as? NSDate {
curr_message.date = messagedate
}
if let messagesender = onemessage["sender"] as? String {
curr_message.sender = messagesender
}
if let messagetext = onemessage["text"] as? String {
curr_message.text = messagetext
}
chat_messages![count_messages] = curr_message
count_messages = count_messages + 1
}
}
curr_chat.chat_messages = chat_messages
self.user_chats![count_chats] = curr_chat
count_chats = count_chats + 1
最佳答案
不是答案,但这可能对您有帮助,当您编写如下内容时,您应该检查您的属性是否为零: curr_message.id = onemessage["chatId"] as!字符串
。
你可以做什么:
if let chatId = onemessage["chatId"] as? String {
curr_message.id = chatId
}
或者,如果您希望它更简单,您可以使用 Swifty JSON写这样的东西:
curr_message.id = onemessage["chatId"].stringValue
希望对您有所帮助!
关于ios - 从 NSArray 中提取数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37444651/