I have a JSON I need to parse:
I work in Java and I know how to parse basic stuff, but I don't know how to handle JSON like this. Every monumentid may have multiple objects in oteviracidoba.
Without the "oteviraci doba", I was parsing my JSON like this:
Iterator keys = response.keys();
while (keys.hasNext()) {
int cislo = 0;
Object key = keys.next();
JSONObject value = response.getJSONObject((String) key);
String monumentnumber = value.getString("monumentid");
String monumentname = value.getString("name");
String monumentregion = value.getString("region");
String monumentregion2 = value.getString("okres");
String monumenttown = value.getString("obec");
String web = value.getString("web");
String monumentdescription = value.getString("content").replaceAll(" ", " ").replaceAll("Dostupnost", " Dostupnost").replaceAll("postižené:", "postižené: ");
CharSequence descriptionfixed = removeHtmlFrom(monumentdescription);
String description = descriptionfixed.toString();
JSONArray arr = value.getJSONArray("oteviracidoba");
for (int i = 0; i < arr.length(); i++)
{
Object shop = arr.getJSONObject(0);
}
mList.add(new Item(monumentnumber, monumentname, monumentregion, monumentregion2, monumenttown, description, web));
}
Any idea how to do the same thing with this new JSON array so I can add objects in them as an argument for my Item?
Thanks for help!
JSONArray arr = value.getJSONArray("oteviracidoba");
Object[] shops = new Object[arr.length];
for (int i = 0; i < arr.length(); i++) {
shops[i] = arr.getJSONObject(i);
}
//if item has array of objects in its constructor then pass it there.
mList.add(new Item(monumentnumber, monumentname, monumentregion, monumentregion2, monumenttown, description, web, shops));
Related
I have tried to parse a JSON object by lot of ways but can't figure out how to parse that.
This is my json string:
{
"JSONDataResult":
{"Messages":
[{ "Id":"0",
"Category":"Sport",
"Title":"It's a goal",
"Content":"sport content"
}]
}
}
I tried this:
JSONArray arr = result.getJSONArray("Messages\\");
for (int j = 0; i < arr.length(); j++)
{
String post_id = arr.getJSONObject(i).getString("post_id");
Id = result.getString("Id\\");
Title = result.getString("Title\\");
Content = result.getString("Content\\");
}
there must be a lot of answers out there but this is the one i did.
guess we have a String coming from server or getting it from android cache where you stored before..
String listdata = "some kind of json data, might be your sample..";
JSONObject jsnobject = new JSONObject(listdata);
System.out.println("jsnobject: " + jsnobject);
return jsnobject.getJSONArray("Messages");
or you already have the reponse as a list structured
JSONArray jsonArray = new JSONArray(response.toString());
for (int i = 0; i < jsonArray.length(); i++) {
.....
}
First you convert it to a valid json object that a json array. where you want the list starts, Messages etc.. so that you can get each elements id, title ..
by getString in you example..
grats
Slash is not required. You simply do this
JSONArray arr = result.getJSONArray("Messages");
for (int j = 0; i < arr.length(); j++)
{
JsonObject object = arr.getJSONObject(i);
Strng id = object .optString("Id");
String Title = object .optString("Title");
}
I get JSON from a rest server (jax rs) through a http request.
[{"carId":"t0","movements":[{"edge":{"edgeId":"--104","fromNode":{"latitude":"51.404456094285734","longitude":"5.477570348298111","nodeId":"-16"},"lanes":[{"laneId":"--104_0"},{"laneId":"--104_1"}],"toNode":{"latitude":"51.404057790546894","longitude":"5.424575687577547","nodeId":"-14"}},"id":8,"lane":{"laneId":"--104_0"},"position":73.76,"speed":14.49,"timeStep":8.0},{"edge":{"edgeId":"--104","fromNode":{"latitude":"51.404456094285734","longitude":"5.477570348298111","nodeId":"-16"},"lanes":[{"laneId":"--104_0"},{"laneId":"--104_1"}],"toNode":{"latitude":"51.404057790546894","longitude":"5.424575687577547","nodeId":"-14"}},"id":16,"lane":{"laneId":"--104_0"},"position":89.35,"speed":15.59,"timeStep":9.0},{"edge":{"edgeId":"--104","fromNode":{"latitude":"51.404456094285734","longitude":"5.477570348298111","nodeId":"-16"},"lanes":[{"laneId":"--104_0"},{"laneId":"--104_1"}],"toNode":{"latitude":"51.404057790546894","longitude":"5.424575687577547","nodeId":"-14"}},"id":27,"lane":{"laneId":"--104_0"},"position":106.39,"speed":17.03,"timeStep":10.0},{"edge":{"edgeId":"--104","fromNode":{"latitude":"51.404456094285734","longitude":"5.477570348298111","nodeId":"-16"},"lanes":[{"laneId":"--104_0"},{"laneId":"--104_1"}],"toNode":{"latitude":"51.404057790546894","longitude":"5.424575687577547","nodeId":"-14"}},"id":35,"lane":{"laneId":"--104_0"},"position":125.24,"speed":18.85,"timeStep":11.0},{"edge":{"edgeId":"--104","fromNode":{"latitude":"51.404456094285734","longitude":"5.477570348298111","nodeId":"-16"},"lanes":[{"laneId":"--104_0"},{"laneId":"--104_1"}],"toNode":
Just to give you an idea how the JSON looks like.
Now I want to convert every item of this JSON file to an Java object.
So I want to see inside the "fromNode" to get the attributes to make an object.
I can see all the movement and edges, thats no problem (i do that like this):
String jsonStringMike = callURL("http://----------/");
try {
JSONArray jsonArrayMike = new JSONArray(jsonStringMike);
int countMike = jsonArrayMike.length(); // get totalCount of all jsonObjects
for (int i = 0; i < countMike; i++) { // iterate through jsonArray
JSONObject jsonObject = jsonArrayMike.getJSONObject(i); // get jsonObject # i position
JSONArray movement = jsonObject.getJSONArray("movements");
String edge = movement.getJSONObject(i).getString("edge");
System.out.println(edge);
So this provides me with all the "edge's" From the JSON file shown before. But if I want to see the "fromNode" I get the following error:
org.json.JSONException: JSONObject["edge"] is not a JSONArray.
This is the code that is not working and will provide the given error.
public static void main(String[] args) throws IOException, JSONException {
String jsonStringMike = callURL("http://6--------------");
try {
JSONArray jsonArrayMike = new JSONArray(jsonStringMike);
int countMike = jsonArrayMike.length(); // get totalCount of all jsonObjects
for (int i = 0; i < countMike; i++) { // iterate through jsonArray
JSONObject jsonObject = jsonArrayMike.getJSONObject(i); // get jsonObject # i position
JSONArray movement = jsonObject.getJSONArray("movements");
int o = movement.length();
String test = movement.toString();
JSONArray jsonArray2 = new JSONArray(test);
for (int p = 0; p < o; o++) {
JSONObject moveObject = jsonArray2.getJSONObject(p);
JSONArray edge = moveObject.getJSONArray("edge");
String fromNode = edge.getJSONObject(p).getString("fromNode");
System.out.println(fromNode);
}
Does anybody knows how I can look "deeper" into the given JSON file?
I think you are almost there, the issue in your code that in the loop moveObject is your edge json object, so movemen.length() is the the count of all edge json objects in the array. I have not tested this, but I think it should work. Also, your for loop has typo, o++ should be p++,
JSONArray jsonArrayMike = new JSONArray(jsonStringMike);
int countMike = jsonArrayMike.length(); // get totalCount of all jsonObjects
for (int i = 0; i < countMike; i++) { // iterate through jsonArray
JSONObject jsonObject = jsonArrayMike.getJSONObject(i); // get jsonObject # i position
JSONArray movement = jsonObject.getJSONArray("movements");
int o = movement.length();
for (int p = 0; p < o; p++)
{
JSONObject movementObject = movement.getJSONObject(p);
JSONObject edgeObject = movementObject.getJSONObject("edge");
JSONObject fromNode = edgeObject.getJSONObject("fromNode");
String latitude = fromNode.getString("latitude");
String longitude = fromNode.getString("longitude");
String nodeId = fromNode.getString("nodeId");
System.out.println(fromNode);
}
}
The output keeps repeating the name for each property. Only need to see the name once, and then prop_name and address can print out for each occassion under the single name. The JSON looks like:
[{"pmid":"2","name":"CARLYLE MANAGEMENT","result":"1","properties":[{"prop_id":"32","prop_name":"Bonneville Tower","address":"25801 Lakeshore","city":"Euclid","state":"OH","zip":"44132","lat":"41.6223","long":"-81.5034"}]},
{"pmid":"1","name":"COMMERCIAL ONE REALTY","result":"18","properties":[{"prop_id":"3","prop_name":"Autumn Chase Apartments","address":"146 Grand Circuit Blvd.","city":"Delaware","state":"OH","zip":"43015","lat":"40.3105","long":"-83.1138"},
{"prop_id":"6","prop_name":"Barrington Club Apartments","address":"4600 Barrington Club","city":"Columbus","state":"OH","zip":"43220","lat":"40.0536","long":"-83.0448"},{"prop_id":"17","prop_name":"Battleship Building Condominium","address":"444 North Front St.","city":"Columbus","state":"OH","zip":"43215","lat":"39.9712","long":"-83.0042"}]
The code is currently:
String pmid = mJsonObject.getString("pmid");
String name = mJsonObject.getString("name");
String result = mJsonObject.getString("result");
JSONArray mJsonArrayProperty = mJsonObject.getJSONArray("properties");
int innerLength = mJsonArrayProperty.length();
for (int k = 0; k < innerLength; k++) {
// JSONArray mJsonArrayProperty = mJsonObject.getJSONArray("properties");
// for (int i = 0; i < mJsonArrayProperty.length(); i++) {
JSONObject mJsonObjectProperty = mJsonArrayProperty.getJSONObject(k);
String prop_id = mJsonObjectProperty.getString("prop_id");
String prop_name = mJsonObjectProperty.getString("prop_name");
String address = mJsonObjectProperty.getString("address");
String city = mJsonObjectProperty.getString("city");
String state = mJsonObjectProperty.getString("state");
String zip = mJsonObjectProperty.getString("zip");
String lat = mJsonObjectProperty.getString("lat");
String lon = mJsonObjectProperty.getString("long");
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_EMAIL, prop_name);
contact.put(TAG_NAME, name);
contact.put(TAG_PHONE, address);
// adding contact to contact list
contactList.add(contact);
}
} }catch (JSONException e) {
e.printStackTrace();
}
The output gives me the prop_name and address but it also says the name over and over each time. The goal is to see the name once and then the multiple properties under it. How can this be accomplished with a for or if statement, or any other way.
I am just writing the algo, How you can do it...
First you have to get the JSONObject in which you have the jsondata.
From that JSONObject you should get JSONArray because the whole jsondata you have is an array.
Now from that JSONArray you should get the string pmid, name etc..
Now again you have to get JSONArray because properties is JSONArray now you can iterate it.
And for doing this you should have use two for loop or any iteration method you want to use.
Try Out this...
JSONArray one=new JSONArray(json);
for (int i = 0; i < one.length(); i++)
{
JSONObject jsonObject=one.getJSONObject(i);
String pmid=jsonObject.getString("pmid");
String name=jsonObject.getString("name");
String result=jsonObject.getString("result");
JSONArray properties=jsonObject.getJSONArray("properties");
for (int j = 0; j < properties.length(); j++)
{
JSONObject js=properties.getJSONObject(j);
String prop_id=js.getString("prop_id");
String prop_name=js.getString("prop_name");
String address=js.getString("address");
String city=js.getString("city");
String state=js.getString("state");
String zip=js.getString("zip");
String lat=js.getString("lat");
String Long=js.getString("long");
}
}
from the following link , I need to get the value stored in "media".
Here is my code:
Content = Content.replace("jsonFlickrFeed(", "");
Content = Content.replace("})", "}");
jsonResponse = new JSONObject(Content);
JSONArray jsonMainNode = jsonResponse.optJSONArray("items"); // this works great!
But I can not access past "items"
You will have to loop through the JSON like this:
...
JSONArray jsonMainNode = jsonResponse.optJSONArray("items");
for (int i=0; i<jsonMainNode.length(); i++) {
String media = jsonMainNode.getJSONObject(i).getString("media");
}
This will loop through the images and return the value(s) in media.
In your case it should be something like this:
..
JSONArray jsonMainNode = jsonResponse.optJSONArray("items");
for (int i=0; i<jsonMainNode.length(); i++) {
JSONObject finalNode = jsonMainNode.getJSONObject(i);
JSONArray finalArray = finalNode.optJSONArray("media");
for (int j=0; j<finalArray.length(); j++) {
String m = finalArray.getJSONObject(j).getString("m");
}
}
...because there is another node inside the media node, called m.
Here is an example getting the tags string for each item in the JSONArray that you have:
for (int i = 0; i < jsonMainNode.length(); i++){
JSONObject jsonObject = jsonMainNode.getJSONObject(i);
String tags = jsonObject.getString("tags");
}
This will iterate through all JSONObjects that are in the array, and extract the tags field from each object.
JSONArray jsonMainNode = jsonResponse.optJSONArray("items"); // this works great!
for (int i = 0; i < jsonMainNode.length(); i++) {
JSONObject item = (JSONObject) jsonMainNode.get(i);
JSONObject media = item.getJSONObject("media");
String valueMedia = media.getString("m");
Log.d("TAG", valueMedia);
}
I'm prsing information from a json file and showing data in a custom ListView. Now, I have an Array named authors. Where authors are multiple. But, in ListView I can only see the last authors name or last array item .
How can I show all items ? Here is my code
for (int index = 0; index < jsonArray.length(); index++)
{
HashMap<String, String> temp = new HashMap<String,String>();
JSONObject jsonObject = jsonArray.getJSONObject(index);
String topic = jsonObject.getString("topic");
String type = jsonObject.getString("type");
String title = jsonObject.getString("title");
String absData = jsonObject.getString("abstract");
JSONArray getAuthorsArray = new JSONArray(jsonObject.getString("authors"));
for(int a =0 ; a < getAuthorsArray.length(); a++){
JSONObject getJSonObj = (JSONObject)getAuthorsArray.get(a);
String authordName = getJSonObj.getString("name");
Log.e("Name", authordName);
temp.put(KEY_AUTHOR, authordName);
}
temp.put(KEY_TOPIC, topic);
temp.put(KEY_TYPE, type);
temp.put(KEY_TITLE, title);
temp.put(KEY_ABSTRACT,absData);
list.add(temp);
}
}
simpleAdapter = new SimpleAdapter(this, list, R.layout.abstract_items, from, new int[]{R.id.abTopic,R.id.abType,R.id.abTitle,R.id.SubTitle});
setListAdapter(simpleAdapter);
temp.put(KEY_AUTHOR, authordName);
That's probably why. You are iterating over the all authors but HashMap will override values and only the last one is being saveed.
As I understand you are getting back a JSON response with an array of JSONObject. Each JSONObject holding some info and a sub-JSONArray of associated authors.
The easiest approach could be just building ArrayList<JSONObject> and extending BaseAdapter implementing an adapter of your own. It's very easy. For large collections of data search on ViewHolder pattern, for optimization.
'HashMap<String, String> temp;
for (int index = 0; index < jsonArray.length(); index++)
{
temp = new HashMap<String,String>();
JSONObject jsonObject = jsonArray.getJSONObject(index);
String topic = jsonObject.getString("topic");
String type = jsonObject.getString("type");
String title = jsonObject.getString("title");
String absData = jsonObject.getString("abstract");
JSONArray getAuthorsArray = new JSONArray(jsonObject.getString("authors"));
for(int a =0 ; a < getAuthorsArray.length(); a++){
JSONObject getJSonObj = (JSONObject)getAuthorsArray.get(a);
String authordName = getJSonObj.getString("name");
Log.e("Name", authordName);
temp.put(KEY_AUTHOR, authordName);
}
temp.put(KEY_TOPIC, topic);
temp.put(KEY_TYPE, type);
temp.put(KEY_TITLE, title);
temp.put(KEY_ABSTRACT,absData);
list.add(temp);
}
}
simpleAdapter = new SimpleAdapter(this, list, R.layout.abstract_items, from, new int[]{R.id.abTopic,R.id.abType,R.id.abTitle,R.id.SubTitle});
setListAdapter(simpleAdapter);'
you declare the "HashMap"line in above the onstart values.it will help for you.