Data:
tried get data from JSON
has code with Swift run on Playground
var roadWayStatusArray = [AnyObject]()
let url = URL(string: "http://od.moi.gov.tw/data/api/pbs")
let data = try? Data(contentsOf: url!)
let json = try? JSONSerialization.jsonObject(with: data!, options: .mutableContainers)
if let results = json as? [String : AnyObject] {
if let result = results["result"] as? [[String : AnyObject]] {
for data in result {
let happendate = data["happendate"] as? String
roadWayStatusArray.append(data as AnyObject!)
}
}
}
I has tried using roadWayStatusArray.sort(by: >) but Xcode report me Ambiguous reference member '>'
How to create sort by hapendate or happentime
Your roadWayStatusArray is an array of AnyObject. There is no > operator defined for AnyObject.
The objects in roadWayStatusArray are actually dictionaries that look like this:
{
UID = "10602090007-0";
areaNm = "\U4e2d\U5c71\U9ad8\U901f\U516c\U8def-\U570b\U9053\Uff11\U865f";
comment = "\U5317\U4e0a.\U4e2d\U58e2\U670d\U52d9\U5340 \U51fa\U53e3\U531d\U9053\U4e2d \U53f3\U5074 \U5c0f\U5ba2\U8eca\U505c\U653e\Uff0c\U99d5\U99db\U7591\U4f3c\U7761\U8457\U4e86";
direction = "\U5317\U4e0a";
happendate = "2017-02-09";
happentime = "01:08:00.0000000";
modDttm = "2017-02-09 01:15:43.603";
region = N;
road = "";
roadtype = "\U5176\U4ed6";
srcdetail = "\U71b1\U5fc3\U807d\U773e";
x1 = "121.73558";
y1 = "25.12263";
}
You need to call sort(by:) with a closure that determines the sort order. For example, if you want to sort by happendate and then happentime:
roadWayStatusArray.sort(by: { (lhsAny, rhsAny) -> Bool in
let lhs = lhsAny as? [String: AnyObject]
let rhs = lhsAny as? [String: AnyObject]
let lhsKey = (lhs?["happendate"] as? String ?? "", lhs?["happentime"] as? String ?? "")
let rhsKey = (rhs?["happendate"] as? String ?? "", rhs?["happentime"] as? String ?? "")
return lhsKey < rhsKey
})
Related
I'm trying to convert an objective c function to swift which is.
+(NSString *)extractNameWithDictionary:(NSDictionary *)dictionary
{
NSDictionary *assets = dictionary[#"assets"];
NSDictionary *item = dictionary[#"item"];
NSArray *facilityAssets = item[#"assets"];
NSDictionary *facilities = facilityAssets[0];
NSDictionary *asset = assets[facilities[#"content"]];
return asset[scs_name] ? : #"";
}
To
func extractNameWithDictionary(dictionary: [AnyHashable : Any]) -> String {
guard let assets = dictionary["assets"] as? [AnyHashable : Any],
let item = dictionary["item"] as? [AnyHashable : Any],
let facilityAssets = item["assets"] as? [Any],
let facilities = facilityAssets[0] as? [AnyHashable : Any],
let asset = assets[facilities["content"]] else { return "" }
return asset[scs_name] ?? ""
}
but in the last constant: let asset = assets[facilities["content"]] I'm getting:
Cannot subscript a value of type '[AnyHashable : Any]' with an index of type 'Any?'
Any help with this?
You can try
func extractNameWithDictionary(dictionary: [String : Any]) -> String {
guard let assets = dictionary["assets"] as? [String : Any],
let item = dictionary["item"] as? [String : Any],
let facilityAssets = item["assets"] as? [Any],
let facilities = facilityAssets[0] as? [String : Any],
let asset = assets[facilities["content"] as? String ?? "" ] as? [String:Any] else { return "" }
return asset[scs_name] as? String ?? ""
}
This
facilities["content"]
returns Any that you can't use in dictionary named assets as it's key is of type AnyHashable
The simplest approach is to just continue your system of unloading to include the content step:
...
let facilities = facilityAssets[0] as? [AnyHashable : Any],
let content = facilities["content"] as? String,
let asset = assets[content] as? [AnyHashable: String]
else { return "" }
You might move on from there to tighten up you types a bit:
func extractNameWithDictionary(dictionary: [String : Any]) -> String {
guard let assets = dictionary["assets"] as? [String : Any],
let item = dictionary["item"] as? [String : Any],
let facilityAssets = item["assets"] as? [[String : Any]],
let content = facilityAssets.first?["content"] as? String,
let asset = assets[content] as? [String: String],
let name = asset[scs_name]
else { return "" }
return name
}
As you work more on this project, however, you'll want to get rid of that NSDictionary entirely, and replace it with a proper struct/class that has typed properties rather than having to do all of this as? madness. That's only showing up because of the use of a dictionary rather than a struct or class.
I don't understand how to get array from dictionary, i have tried in this code but i want get array only content and type
This is my array
{
wsResponse = {
aarti =(
{
content = "";
identifier = "slok_one";
title = 1;
type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930";
},
{
content = "";
identifier = "slok_two";
title = 2;
type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930";
},
{
content = "";
identifier = "slok_three";
title = 3;
type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930";
}
}
);
};
Here is my code
Alamofire.request(url, method: .get, parameters: nil, encoding: JSONEncoding.default)
.responseJSON { response in
if let status = response.response?.statusCode {
switch(status){
case 201:
print("example success")
default:
print("error with response status: \(status)")
}
}
//to get JSON return value
if let array = response.result.value
{
let JSON = array as! NSDictionary
print("\(JSON)")
let response = JSON["wsResponse"] as! NSDictionary
let data = response["aarti"]
}
}
i want array from this ,like content,title,type
thank you in advance
According to the JSON this prints all values in the aarti array:
if let JSON = response.result.value as? [String:Any] {
if let response = JSON["wsResponse"] as? [String:Any],
let aarti = response["aarti"] as? [[String:Any]] {
for item in aarti {
let content = item["content"] as! String
let identifier = item["identifier"] as! String
let title = item["title"] as! Int
let type = item["type"] as! String
print(content, identifier, title, type)
}
}
}
Basically do not use NSDictionary / NSArray in Swift.
If you want to put all content values in an array use flatMap. The line can replace the whole repeat loop.
let contentArray = aarti.flatMap { $0["content"] as? String }
PS: If you are going to create multiple arrays from the values don't do that: Use a custom struct or class
if someone want to get dictionary of array and use it in tableview
declaration:
var list:[Any] = []
and initialisation :
self.list = (self.ListDic?["data"] as! NSArray!) as! [Any]
and use:
let dictObj = self.list[indexPath.row] as! NSDictionary
print("object value: ",dictObj["text"] as! String)
I have a JSON response which is in brackets and I struggle to access the inner fields e.g. display_name with Swift. How can I do that?
Optional(["result": {
user = {
"display_name" = "Max Test";
email = "test.max#gmail.com";
"fb_id" = 10209982554704497;
roles = (
stu
);
schools = "<null>";
};
}])
The code I used to access the JSON:
self.restApi.getProfileDetails() {responseObject, error in
//parse down the first layer of array
let response = responseObject as? [String:AnyObject]
print("response object when MyDetailsController opened")
print(response)
let result = response!["result"] as? [AnyObject]
print("result object")
print(result)
//parse down the second layer of JSON object
if let result = response!["result"] as? [AnyObject] {
print("result object when MyDetailsController opened")
// work with the content of "result", for example:
if let user = result[0] as? [String:AnyObject]{
print(user)
let displayName = user["display_name"]
print("displayName")
print(displayName)
}
}
It seems that I address the result in the wrong way as it is always nil:
The console output:
result object
nil
In response result is dictionary not array, try to get like this
let result = response!["result"] as? [String:AnyObject]
1-Get the result object from response
2-Get the user object from result object
3-Get the user info as String from user object .
let response = responseObject as? [String: AnyObject]
let result = response!["result"] as? [String: AnyObject]
if let user = result!["user"] as? [String: AnyObject] {
let displayName = user["display_name"] as? String
let email = user["email"] as? String
}
[{"name":"Air Elemental","toughness":"4","printings":["LEA","BTD","7ED","8ED","9ED","10E","DD2","M10","DPA","ME4","DD3_JVC"]}]
I have a JSON where there is an array in each listing called "printings" as seen below, how would I take this array out of each listing and convert it into a string like "LEA-BTD-7ED". Here is what I have so far but its crashing.
let err : NSErrorPointer?
let dataPath = NSBundle.mainBundle().pathForResource("cardata", ofType: "json")
let data : NSData = try! NSData(contentsOfFile: dataPath! as String, options: NSDataReadingOptions.DataReadingMapped)
do{
var contents = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments) as! [AnyObject]
for var i = 0;i<contents.count;++i{
let printing = contents[i]["printings"] as! String
}
}
Here's the code:
let path = dataPath!
if let JSONData = NSData(contentsOfFile: path)
{
do
{
if let dictionariesArray = try NSJSONSerialization.JSONObjectWithData(JSONData, options: NSJSONReadingOptions()) as?
[[String: AnyObject]]
{
for dictionary in dictionariesArray
{
if let printingsArray = dictionary["printings"] as? [String]
{
let printingsString = printingsArray.joinWithSeparator("-")
print(printingsString)
}
}
}
}
catch
{
print("Could not parse file at \(path)")
}
}
Executing it prints "LEA-BTD-7ED-8ED-9ED-10E-DD2-M10-DPA-ME4-DD3_JVC"
You can't cast an Array (contents[i]["printings"]) to a String. What you want is Array's joinWithSeparator() method, like this:
let printing = contents[i]["printing"] as! Array
let printingStr = printing.joinWithSeparator("-")
(Actually, I'm not sure whether you need the as! Array; try it without it.)
from this link I would like to get the commonName
I tried this but it didn't work?!
let commonName = object["toLocationDisambiguation"][0]["disambiguationOptions"][1]["place"][2]["commonName"].stringValue
Option 1 (Normal)
if let toLocationDisambiguation = object["toLocationDisambiguation"] as? Dictionary<String, AnyObject> {
if let disambiguationOptions = toLocationDisambiguation["disambiguationOptions"] as? Array<AnyObject> {
if let first = disambiguationOptions.first as? [String: AnyObject] {
if let place = first["place"] as? [String: AnyObject] {
let commonName = place["commonName"] as! String
print("Common Name: ", commonName)
}
}
}
}
Option 2 (Type Aliases)
typealias MyDictionary = [String: AnyObject]
typealias MyArray = [MyDictionary]
if let toLocationDisambiguation = object["toLocationDisambiguation"] as? MyDictionary {
if let disambiguationOptions = toLocationDisambiguation["disambiguationOptions"] as? MyArray {
if let first = disambiguationOptions.first {
if let place = first["place"] as? MyDictionary {
let commonName = place["commonName"] as! String
print("Common Name: ", commonName)
}
}
}
}
Option 3 (SwiftyJSON for Objective-C like syntax)
Take a look at SwiftyJSON.
let object = try! NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments) as! Dictionary<String, AnyObject>
let json = JSON(object)
let commonName = json["toLocationDisambiguation"]["disambiguationOptions"][0]["place"]["commonName"].stringValue
print("Common Name: ", commonName)