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How to get values and keys through single line string xml in android [duplicate]

This question already has answers here:
How do I parse JSON in Android? [duplicate]
(3 answers)
Closed 8 years ago.
I am encounter a problem. I have following xml
<string>[{"BatchIDs":[],"HomeWorkCategoryName":"","FileURL":"","FileName":"","ID":1,"Title":"test","Description":"test","HomeworkCategoryID":1,"ExpiryDate":"\/Date(1386658800000)\/","FileID":-2147483648,"URL":"","Mode":1,"Type":2,"Status":1,"CreatedOnDate":"\/Date(1388093500883)\/","UpdatedOnDate":"\/Date(1388093500883)\/","Inactive":false,"Deleted":true},
{"BatchIDs":[],"HomeWorkCategoryName":"","FileURL":"","FileName":"","ID":1,"Title":"test","Description":"test","HomeworkCategoryID":1,"ExpiryDate":"\/Date(1386658800000)\/","FileID":-2147483648,"URL":"","Mode":1,"Type":2,"Status":1,"CreatedOnDate":"\/Date(1388093500883)\/","UpdatedOnDate":"\/Date(1388093500883)\/","Inactive":false,"Deleted":true},
{"BatchIDs":[],"HomeWorkCategoryName":"","FileURL":"","FileName":"","ID":1,"Title":"test","Description":"test","HomeworkCategoryID":1,"ExpiryDate":"\/Date(1386658800000)\/","FileID":-2147483648,"URL":"","Mode":1,"Type":2,"Status":1,"CreatedOnDate":"\/Date(1388093500883)\/","UpdatedOnDate":"\/Date(1388093500883)\/","Inactive":false,"Deleted":true}]
And I want to read all values passed in this xml. This xml is single string return by web service. Currently I am using following code (it's also providing null value for first entry)
Object result = envelope.getResponse();
str=result+"";
String key,value;
String[] couple = str.split(",\"");
for(int i =0; i < couple.length ; i++) {
String[] items =couple[i].split(":");
key=items[0];
value=items[1];
key=key.replaceAll("\"", "");
value=value.replaceAll("\"", "");
/* some conditions to fetch values */
}
Please tell me how can I get exact values and keys in android.
Thanks,

It seems to be a valid json. You can use http://jsonlint.com/ to check that.
So with this following class : JSONArray, you can retrieve what you want.

Thanks everyone for helping me.
Here is my soluction through I overcome my problem. May be it will use for others
HttpGet httpRequest = new HttpGet(_URL);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse httpresponse = httpclient.execute(httpRequest);
JSONArray response = null;
try {
response = new JSONArray(getJSONString(httpresponse));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < response.length(); i++) {
try {
//your values
String _name=response.getJSONObject(i).getString("NAME");
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Here is 2nd function.If your function is parse through xml code.
public static String getJSONString(HttpResponse response) {
try {
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = builder.parse(response.getEntity().getContent());
NodeList nl = doc.getElementsByTagName("string");
Node n = nl.item(0);
String str = n.getFirstChild().getNodeValue();
return str;
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
Happy Coding

Java - Jackson to a file

I have a JSON file like this:
{
"Product":
{
"ID": "08-17-96-71-D9-68",
"Licences":
{
"total": 40,
"used": 0,
"remain": 40
}
}
}
I used jackson to convert it to a Java Object and I get all the values (so far, so good).
My problem is that I want to change these values and re-write the JSON file but when I do that, the result is like this:
"{\"Product\":{\"IaD\": \"08-17-96-71-D9-68\",\"Licences\":{\"total\": 40,\"used\": 1,\"remain\": 39}}}"
So when I tried to read it again it gives me an error because it cannot read the first and last character (") and also it reads the \ character.
This is my code:
public class UsingJason {
String theJsonString = "";
ObjectMapper mapper = new ObjectMapper();
public class Product{
Licences lic;
public class Licences{
int total;
int used;
int remain;
}
}
public void readJson(){
if(new File("asset/testJson.json").exists()){
theJsonString = "";
try {
BufferedReader in = new BufferedReader(new FileReader("asset/testJson.json"));
String line;
while ((line = in.readLine()) != null){
theJsonString += line;
}
in.close();
} catch (IOException e1) {
e1.printStackTrace();
}
System.out.println("JSON String: "+ theJsonString);
}else{
System.out.println("NO FILE FOUND");
}
JsonNode rootNode = null;
try {
rootNode = mapper.readValue(theJsonString, JsonNode.class);
} catch (JsonParseException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (JsonMappingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JsonNode totalNode = rootNode.get("Product").get("Licences").get("total");
JsonNode usedNode = rootNode.get("Product").get("Licences").get("used");
JsonNode remainNode = rootNode.get("Product").get("Licences").get("remain");
JsonNode idStringNode = rootNode.get("Product").get("ID");
// Parse it into a Java object.
try {
int totalObject = mapper.readValue(totalNode, Integer.class);
System.out.println("INTEGER? HAS TO BE... 40: "+totalObject);
String idString = mapper.readValue(idStringNode, String.class);
System.out.println("String? Has to be 08-17-96-71-D9-68: "+idString + " True? "
+ idString.equals("08-17-96-71-D9-68") );
int usedObject = mapper.readValue(usedNode, int.class);
int remainObject = mapper.readValue(remainNode, int.class);
System.out.println("Going to rest 1");
usedObject ++;
remainObject = totalObject - usedObject;
String toJackson = "{\"Product\":{\"I\\D\": \"08-17-96-71-D9-68\",\"Licences\":{\"total\": "+totalObject+",\"used\": "+usedObject+",\"remain\": "+remainObject+"}}}";
System.out.println("String created: " +toJackson);
// THIS toJackson String returns the string without \ and without the "
// IT PRINT THIS: {"Product":{"ID": "08-17-96-71-D9-68","Licences":{"total": 40,"used": 1,"remain": 39}}}
// EXACTLY WHAT I WANT TO Write in the Json file but it writes the \ ..
mapper.writeValue(new File("asset/testJson.json"), toJackson);
} catch (JsonParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JsonMappingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Can anyone tell me what I am doing wrong?

In your code here:
mapper.writeValue(new File("asset/testJson.json"), toJackson);
You are serializing not an object, but the string to the file. I suppose this is the reason why it gets escaped, like any string.
The input value should be an object with your structure.
Something like this:
// Initialize an object
Product myProduct = new Product();
myProduct.lic = new Procuct.Licences();
myProduct.lic.total = totalObject;
myProduct.lic.used = usedObject;
myProduct.lic.remain = remainObject;
// Serialize the object into JSON
mapper.writeValue(new File("asset/testJson.json"), myProduct);

Cannot be converted to JSON

I am reading some JSON from with in an Android App, yet it will not recognise the following JSON
{"value":"1000","make":"Ford","model":"Focus","desc":"1.9 Zetec","Fuel":"petrol"}
This is output generated from a PHP file on a webserver. Is there something wrong with this JSON or is the problem with the following code?
try {
JSONArray jArray = new JSONArray(result);
JSONObject json_data=null;
for(int i=0;i<jArray.length();i++){
json_data = jArray.getJSONObject(i);
String car_value = json_data.getString("value");
Log.e("JSON",car_value);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

Given String is not a Json Array. That is Json Object. So parse with Json object.
like below
try {
JSONObject jObject = new JSONObject(result);
String value = jObject.getString("value");
String make = jObject.getString("make");
// TODO and so on
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

The json data you are receiving is not a JSONArray. It is a JSONObject. So, you should receive it as:
JSONObject jArray = new JSONObject(result);
And then if you want value you can get it like
String car_value = jArray.getString("value");

Error Parse JSON Response String Android

I have a response String from an API service like this :
{"id":"login","status":"true"}
and This is the way to parse Response String to get Value from Key "Status"
JSONObject jsonObj = null;
try{
jsonObj = new JSONObject(responseString);
}
catch(JSONException e){
e.printStackTrace();
}
JSONArray innerJsonArray = null;
try {
innerJsonArray = jsonObj.getJSONArray("status");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject jsonObject = null;
try {
jsonObject = innerJsonArray.getJSONObject(0);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
System.out.println(jsonObject.getString("status"));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
and I've got error
"org.json.JSONArray cannot be converted to JSONObject"
Anyone can give me suggestion?

JSONObject jsonObj = null;
try{
jsonObj = new JSONObject(responseString);
System.out.println(jsonObj.getString("status"));
}
catch(JSONException e){
e.printStackTrace();
}
You do not need to bother with any other arrays.

In which line you get the exception ? In any way may be you should use
jsonObj =JSONObject.fromObject(responseString);

Kindly try the snippet code below. Try this link for gaining better knowledge about parsing an JSON response.
JSONObject jObj;
try {
jObj = new JSONObject(responseString);
Log.i("id==", jObj.getString("id"));
Log.i("status==", jObj.getString("status"));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

Json Object is null

I have a JsonObject based Class called JSONParse. There is this method:
public String getName()
{
try {
JSONObject jobj = this.getJSONObject("Data");
Log.e("NFF NAME", jobj.toString());
JSONObject jobj2= jobj.getJSONObject("User");
Log.e("NFF NAME", jobj2.toString());
return jobj2.getString("username");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "";
}
The Log:
03-19 19:50:09.280: E/NFF NAME(5909): {"User":{"picture":"http://vm19.htl-leonding.ac.at/img/30.png","gender":"f","username":"lisa","age":32}}
03-19 19:50:09.280: E/NFF NAME(5909): {"picture":"http://vm19.htl-leonding.ac.at/img/30.png","gender":"f","username":"lisa","age":32}
Problem:
This method above always returns null for the name.
Please Help

username is inside User... try this
public String getName()
{
try {
JSONObject jobj = this.getJSONObject("Data");
Log.e("NFF NAME", jobj.toString());
JSONObject jobj2= jobj.getJSONObject("User");
Log.e("NFF NAME", jobj2.toString());
JSONObject jobj2b= jobj2.getJSONObject("User");
Log.e("NFF NAME", jobj2b.toString());
return jobj2b.getString("username");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "";
}
i don't tested but you may try...
EDITED:
i'm sorry, i write fast and dont look at the code, jobj2b point to jobj2 first child: 'User'