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Convert String to array in android from json response

I am getting json response in array form like this
["Monday","Wednesday","Friday"]
, but it is not saving as a array in android, I am storing that in a string like this
String daysOfInterest = map.get("daysOfinterest");
[{"careTypeId":"10","careTypeName":"Vacation Care","daysOfinterest":["Tuesday","Thursday","Saturday"],"childDaysOfInterestId"‌​:"424"},
{"careTypeId":"10","careTypeName":"Vacation Care","daysOfinterest":["Monday","Wednesday","Friday"],"childDaysOfInterestId":"‌​425"}]
this is my response and I am storing that daysofInterest in hashmap...and getting using hashmap
But I want to get that in a array form

you can convert the json array into a java array with this
ArrayList<String> list = new ArrayList<String>();
JSONArray jsonArray = (JSONArray)jsonObject;
if (jsonArray != null) {
int len = jsonArray.length();
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
}
String[] myArray = list.toArray(new String[list.size()]);
then you can pass the array elements to your map. more info here Convert Json Array to normal Java Array

GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
Days[] daysArray = gson.fromJson(jsonString, Days[].class);
Here is Gson library and here is example.

Hope this is useful.
yourstring is ["AA", "BB", "CC"]
if (!yourstring.equals("")) {
String[] type = yourstring
.replace("[", "")
.replace("]", "")
.replace("\"", "")
.split(",");
}

java assign map each value into an String array

I want to save data into master - details table.First portion is for master table and last portion is for details table.I have got java.lang.String cannot be cast to [Ljava.lang.String .How to recover from this problem.How to assign map.get("step_id[]") into a string array String[] WfIds. I want to assign each value into distinct string array.
Controller Code
Map<String,Object> wfManager = new HashMap<String,Object>();
//************************Master data sent from view******************************//
wfManager.put("workflow_code",(request.getParameter("workflow_code")).toUpperCase());
wfManager.put("workflow_name",request.getParameter("workflow_name"));
wfManager.put("workflow_descr",request.getParameter("workflow_descr"));
wfManager.put("object_type_code",request.getParameter("object_type_code"));
//*********************Detail item data sent from view********************************//
wfManager.put("wf_block_id[]", request.getParameter("wf_block_id[]"));
wfManager.put("step_code[]" , request.getParameter("step_code[]"));
wfManager.put("step_name[]", request.getParameter("step_name[]"));
wfManager.put("doa_type_code[]", request.getParameter("doa_type_code[]"));
wfManager.put("doa_type_name[]", request.getParameter("doa_type_name[]"));
Service Code
public Map<String, String> insert(Map<String, Object> map) {
//************************Master data sent from view******************************//
Map<String, String> data = new HashMap<String, String>();
Workflow wf = new Workflow();
wf.setWorkflowCode((String)map.get("workflow_code"));
wf.setWorkflowName((String)map.get("workflow_name"));
wf.setWorkflowDescr((String)map.get("workflow_descr"));
wf.setObjectTypeCode((String)map.get("object_type_code"));
String[] WfIds = (String[]) map.get("step_id[]");
String[] wfBlockIds = (String[]) map.get("wf_block_id[]");
String[] wfsCodes = (String[]) map.get("step_code[]");
String[] stepNames = (String[]) map.get("step_name[]");
String[] doaTypeCodes = (String[]) map.get("doa_type_code[]");
String[] doaTypeNames = (String[]) map.get("doa_type_name[]");
List<WorkflowDetails> wfDetailsList = new ArrayList<WorkflowDetails>();
for(int i = 0; i< wfsCodes.length; i++){
WorkflowDetails wfDetails = new WorkflowDetails();
wfDetails.setWorkflowCode(wf.getWorkflowCode());
wfDetails.setWorkflowName(wf.getWorkflowName());
wfDetails.setWorkflowDescr(wf.getWorkflowDescr());
wfDetails.setWorkflowObjectTypeCode(wf.getObjectTypeCode());
wfDetails.setWorkflowObjectTypeName(wf.getObjectTypeName());
wfDetailsList.add(i,wfDetails);
}
wf.setSteps(wfDetailsList);
id = workflowManagerDAO.insertDoc(wf);
data.put("id", id);
return data;
}
Code for DAO:
#Transactional
#Override
public String insertDoc(Workflow wfManager) {
for(int i = 0; i < wfManager.getSteps().size(); i++){
WorkflowDetails wfDetails = new WorkflowDetails();
wfDetails = wfManager.getSteps().get(i);
sessionfactory.getCurrentSession().save(wfDetails);
sessionfactory.getCurrentSession().flush();
}
String id = (String) sessionfactory.getCurrentSession().save(wfManager);
sessionfactory.getCurrentSession().flush();
return id;
}

If you absolutely need to use request.getParameter(), you will have to convert your arrays to strings using a delimiter character, e.g. convert this
String[] array = { "John", "Peter", "Paul" };
to this
String plainTextArray = "John#Peter#Paul";
Then you will be able to pass you array values as String (the only type that getParameter() understands).
You can then restore them like this
String[] restoredArray = request.getParameter("plainTextArray").split("#");
Maybe you want to have a look at setAttribute() and getAttribute() which let you store any objects (including arrays). You can start here Difference between getAttribute() and getParameter()

Fetch all the valid JSON strings from a text String in Java

I have a situation where in some JSON strings are seperated by a comma. For example I have a string which looks like this
{Valid JSON String},{Valid JSON String},{Valid JSON String}
I want to fetch each valid JSON string and store them in a ArrayList. How do I break the string?

You can do this :
List<JSONObject> result = new ArrayList<JSONObject>();
String s = "{Valid JSON String},{Valid JSON String},{Valid JSON String}";
JSONArray arr = new JSONArray("[" + s + "]");
for (int i = 0; i < arr.length(); i++)
{
result.add(arr.getJSONObject(i));
}
An then, with each JSONObject, you can do whatever you want

How separate keys and values in this JSON object, using Java?

I have JSON object like
{
"projector":"no",
"video_conference":"no",
"polycom":"no",
"lcd":"no",
"digital_phone":"no",
"speaker_phone":"no"
}
How do I store the keys in one array and the values in a separate array?

Try GSON for converting your java object to json and vice versa.
Refer this link
http://code.google.com/p/google-gson/

You may try this.
String s = " { "projector":"no", "video_conference":"no", "polycom":"no", "lcd":"no", "digital_phone":"no", "speaker_phone":"no" }";
JSONObject jObject = new JSONObject(s);
JSONObject menu = jObject.getJSONObject("projector");
Iterator iter = menu.keys();
String[] keyArr = new String();
String[] valArr = new String();
int count = 0;
while(iter.hasNext()){
keyArr[count] = (String)iter.next();
valArr[count] = menu.getString(key);
count +=1;
}

I like Jackson from http://codehaus.org/ for JSON parsing.
String text = "{ \"projector\":\"no\", \"video_conference\":\"no\", \"polycom\":\"no\", \"lcd\":\"no\", \"digital_phone\":\"no\", \"speaker_phone\":\"no\" }";
ObjectMapper mapper = new ObjectMapper();
Map<String,Object> map = mapper.readValue(text, Map.class);
Set<String> k = map.keySet();
Collection<Object> v = map.values();
String[] keys = k.toArray(new String[k.size()]);
String[] values = v.toArray(new String[v.size()]);

Convert normal Java Array or ArrayList to Json Array in android

Is there any way to convert a normal Java array or ArrayList to a Json Array in Android to pass the JSON object to a webservice?

If you want or need to work with a Java array then you can always use the java.util.Arrays utility classes' static asList() method to convert your array to a List.
Something along those lines should work.
String mStringArray[] = { "String1", "String2" };
JSONArray mJSONArray = new JSONArray(Arrays.asList(mStringArray));
Beware that code is written offhand so consider it pseudo-code.

ArrayList<String> list = new ArrayList<String>();
list.add("blah");
list.add("bleh");
JSONArray jsArray = new JSONArray(list);
This is only an example using a string arraylist

example key = "Name" value = "Xavier" and the value depends on number of array you pass in
try
{
JSONArray jArry=new JSONArray();
for (int i=0;i<3;i++)
{
JSONObject jObjd=new JSONObject();
jObjd.put("key", value);
jObjd.put("key", value);
jArry.put(jObjd);
}
Log.e("Test", jArry.toString());
}
catch(JSONException ex)
{
}

you need external library
json-lib-2.2.2-jdk15.jar
List mybeanList = new ArrayList();
mybeanList.add("S");
mybeanList.add("b");
JSONArray jsonA = JSONArray.fromObject(mybeanList);
System.out.println(jsonA);
Google Gson is the best library http://code.google.com/p/google-gson/

This is the correct syntax:
String arlist1 [] = { "value1`", "value2", "value3" };
JSONArray jsonArray1 = new JSONArray(arlist1);

For a simple java String Array you should try
String arr_str [] = { "value1`", "value2", "value3" };
JSONArray arr_strJson = new JSONArray(Arrays.asList(arr_str));
System.out.println(arr_strJson.toString());
If you have an Generic ArrayList of type String like ArrayList<String>. then you should try
ArrayList<String> obj_list = new ArrayList<>();
obj_list.add("value1");
obj_list.add("value2");
obj_list.add("value3");
JSONArray arr_strJson = new JSONArray(obj_list));
System.out.println(arr_strJson.toString());

My code to convert array to Json
Code
List<String>a = new ArrayList<String>();
a.add("so 1");
a.add("so 2");
a.add("so 3");
JSONArray jray = new JSONArray(a);
System.out.println(jray.toString());
output
["so 1","so 2","so 3"]

Convert ArrayList to JsonArray
: Like these [{"title":"value1"}, {"title":"value2"}]
Example below :
Model class having one param title and override toString method
class Model(
var title: String,
var id: Int = -1
){
override fun toString(): String {
return "{\"title\":\"$title\"}"
}
}
create List of model class and print toString
var list: ArrayList<Model>()
list.add("value1")
list.add("value2")
Log.d(TAG, list.toString())
and Here is your output
[{"title":"value1"}, {"title":"value2"}]