"org.json.JSONObject" cannot be converted to JSONArray - android

When I am trying to access the Content of this below JSON , I am getting the Exception.
This is My JSON Value:
{"listDev":{"description":"D4684","deviceID":"d2","uniqueID":"0014018682"}}
This is my code to get the Content in "listDev"
JSONObject object = ApplicationContext.getHttpService().readAsJson(content);
JSONArray array = object.getJSONArray("listDev");
So, what to do to get the Contents like decription, imei...
Thanks in advance.

listDev is a JSONObject not a JSONArray:
change
JSONArray array = object.getJSONArray("listDev");
to
JSONObject array = object.getJSONObject("listDev");

String json = {"listDev":{"description":"D4684","deviceID":"d2","uniqueID":"0014018682"}};
JSONObject object = new JSONObject(json);
JSONObject array = object.getJSONArray("listDev");

Related

Parsing json code to a string in android using volley

i need help to parse this json code to actual strings using android volley. this is the json code:[{"name":"Tayo","0":"Tayo","thread_name":"Welcome","1":"Welcome","post":"Hi there,","2":"Hi there,","post_time":"Sunday","3":"Sunday"},{"name":"Pete","0":"Pete","thread_name":"Welcome","1":"Welcome","post":"Hi,am pete","2":"Hi,am pete","post_time":"Monday","3":"Monday"}].
I have tried other helps but not working. Thanks!
Remember:
if the .json content starts with { is considered as a Json Object.
if the .json content starts with [ is considered as a Json Array.
so you hava a JsonArray then you can parse your content like this way:
//Obtain the JsonArray
JSONArray jsonArray = new JSONArray(myJsonContent);
// Get the JsonObjects inside JsonArray
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonobject = jsonArray.getJSONObject(i);
}
// strData is the json data received.
JSONArray jsonArray = new JSONArray(strData);
for (int i=0; i<jsonArray.length();i++){
JSONObject jsonObject = jsonArray.getJSONObject(i);
String name = jsonObject.optString("name");
String zero = jsonObject.optString("0");
String thread_name = jsonObject.optString("thread_name");
String one = jsonObject.optString("1");
String post = jsonObject.optString("post");
String two = jsonObject.optString("2");
String post_time = jsonObject.optString("post_time");
String three = jsonObject.optString("3");
//Just an example
arrayName.add(jsonObject.optString("name"));
}
You can even use array to store data instead of the string.

(Android) JSONObject cannot be converted to JSONArray

My below android code is throwing
org.json.JSONException: Value
{"ID":1,"DisplayName":"Manish","UserName":"manish.parab#hotmail.com"}
at AuthenticateUserResult of type org.json.JSONObject cannot be
converted to JSONArray
Code:
String response = Common.ExecuteHttpRequest(Url);
JSONObject jsonObject = new JSONObject(response);
JSONArray jArray = jsonObject.getJSONArray("AuthenticateUserResult");
response is string from WCF method.
{"AuthenticateUserResult":{"DisplayName":"Manish","ID":1,"UserName":"manish.parab#hotmail.com"}}
The value of AuthenticateUserResult is a JSON Object (it's enclosed in {}).
Change that line to this
JSONObject jArray = jsonObject.getJSONObject("AuthenticateUserResult");
Then you can get your data as follows :
String displayName = jArray.getString("DisplayName");
// Etc...
There are three workarounds to solve this problem.
1.Use JsonObject. Your WCF server just give it in JsonObject.
String response = Common.ExecuteHttpRequest(Url);
JSONObject jsonObject = new JSONObject(response).getJSONObject("AuthenticateUserResult");
2.Use json array as a container
String response = Common.ExecuteHttpRequest(Url);
JSONObject jsonObject = new JSONObject(response);
JSONArray jArray = new JSONArray().put(jsonObject.getJSONObject("AuthenticateUserResult"));
3.Edit server to provide AuthenticationUserResult into json array. The right format would be as below.
{"AuthenticateUserResult":[{"DisplayName":"Manish","ID":1,"UserName":"manish.parab#hotmail.com"}]}
The exception is right, because "AuthenticateUserResult" value is declared as an element ({}) and not as an array ({}).
To fix this, use getJSONObject method to get the value of "AuthenticateUserResult", like this:
String response = Common.ExecuteHttpRequest(Url);
JSONObject jsonObject = new JSONObject(response);
JSONObject result = jsonObject.getJSONObject("AuthenticateUserResult");
After that, you can retrieve a child element, like:
String mUserName = result.getString("UserName");

Android parse JSON, how to fetch only single parameter

hi i have only one parameter to parse
this is what i have tried....
JSONObject jsonObject = new JSONObject(response);
JSONArray result = jsonObject.getJSONArray("result");
and here is the below json
{"result" : "169489465811879423"}
Use this
JSONObject jsonObject = new JSONObject(response);
String result = jsonObject.getString("result");
Here there is no JsonArray and you are trying to get an array

Android - Json without tags - Parsing

How can I parse json from the URL? below is my json structure which does not has tags.
[{"channelId":"0465CDBE","channelName":"ATV2"},{"channelId":"06E6923B1","channelName":"Phoenix"},{"channelId":"07B4FB7ed","channelName":"N24"},{"channelId":"115B73E39","channelName":"ORF2"},
Simply get the JSONArray
JSONArray jArr = new JSONArray(jsonString);
for(int i=0;i<jArr.length;i++)
{
String jChannel = jArr.getJSONObject(i).getString("channelId");
String jChannelName = jArr.getJSONObject(i).getString("channelName");
//you can now play with these variables or add to some list or do whatever you like.
}
The outer object is a JSONArray, so you can iterate it with a "for".
Inside your json array, you have simple json objects. You can parse it by key or iterate the keys.
You can user json object and get the value with getJSONArray
examples:
testob = {"channelId":"07B4FB7ed","channelName":"N24"}, {"channelId":"115B73E39","channelName":"ORF2"},
JSONObject jsonObject = new JSONObject(testob);
JSONArray dataArray = jsonObject.getJSONArray("data");
JSONObject jsonProductData = dataArray.getJSONObject(0);

Simple Json parsing in android

I got the Json response. I am not able to get the values from the string.my string is
Json_response is
{"NameAllList":[{"Current":{"time":"2012-02-21T08:04:21","Name":"abcd"},
"Next":{"Name":"data1","StartTime":"2012-02-21T08:06:21"}},{"Current":{"time":"2012-02-21T08:14:21","Name":"defg"},
"Next":{"Name":"data2","StartTime":"2012-02-21T08:24:21"}},{"Current":{"time":"2012-02-21T08:28:21","Name":"ghij"},
"Next":{"Name":"data3","StartTime":"2012-02-21T08:34:21"}},{"Current":{"time":"2012-02-21T08:40:21","Name":"knmo"},
"Next":{"Name":"data4","StartTime":"2012-02-21T08:48:21"}}]}
and i tried this.
JSONObject jsonObj = new JSONObject(json_response);
JSONObject subObj = jsonObj.getJSONObject("Current");
String name_current =subObj.getString("Name");
but i am not able to get the value of "Name". what mistake i have done. provide the link to do the above parsing.
first of all, your JSON response is having NameAllList as a JSON Array of objects.
So you have to fetch JSON Array first, then you can fetch one-by-one object.
for example:
JSONObject jsonString = (new JSONObject(json_response_string));
JSONArray array = jsonString.getJSONArray("NameAllList");
for(int i=0; i<array.length(); i++)
{
// Retrieve Current object as such
JSONObject objCurrent = array.getJSONObject("Current");
// Retrieve Next object as such
JSONObject objNext = array.getJSONObject("Next");
}
You are not parsing json properly, so you are not able to fetch value of Name. Please note JSON Annotation [] represent JSONArray, and {} respresent JSONObject, so method to get current item's name is:
JSONObject jsonObj = new JSONObject(json_response_string);
JSONArray jsonArr=jsonObj.getJSONArray("NameAllList");
String Hora_name_current="";
for(int i=0;i<jsonArr.length();i++)
{
JSONObject obj=jsonArr.get(i);
try{
JSONObject subObj = obj.getJSONObject("Current");
Hora_name_current =subObj.getString("Name");
break;
}catch(JSONException ex)
{
}
}
looks like you're trying to use JSONObject when you should be using JSONArray for the second request. Try this:
JSONObject jsonString = (new JSONObject(json_response_string));
JSONArray array = jsonString.getJSONArray("NameAllList");
In your JSON return, "NameAllList is actually an array and needs to be handled as such. Once you set it to "array", you can then run a for loop and treat it like any other array in Java.
Let me know if that helps.
David
JSONObject jsonObj = new JSONObject(json_response_string);
JSONArray jsonArray = jsonObj.getJSONArrays("NameAllList");

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