I'm parsing a jsonData and getting the video_url from it. What my requirements is to add the video_url inside the ArrayList. I've tried everything and getting the result as this in my logCat :
E/VIDEO URL: [https://firebasestorage.googleapis.com/v0/b/myhovi-android.appspot.com/o/MySavedVideo%2FJIMyHoviVideo.mp4?alt=media&token=c103543e-31f0-4682-9b44-09d679c76699]
E/VIDEO URL: [https://firebasestorage.googleapis.com/v0/b/myhovi-android.appspot.com/o/MySavedVideo%2FBMMyHoviVideo.mp4?alt=media&token=9bcf98a1-dad1-4f63-864f-7559ef1d49c1]
Now here you can clearly see that the video_url is coming in this format what I want a single ArrayList containing both the url.
This is the code I've done to print the desired result but it is not coming fine :
private void jsonParsingVideoData(String projectVideos, String projectId) throws JSONException{
JSONArray jsonArray = new JSONArray(projectVideos);
ArrayList<String> video_url = null;
for(int i=0; i< jsonArray.length() ; i++){
JSONObject jObject = jsonArray.getJSONObject(i);
video_url = new ArrayList<>(Arrays.asList(jObject.getString("video_url")));
Log.e("VIDEO URL", video_url.toString());
}
}
I've tried in this way also but it failed, only one output is there if I'm doing in this way out of the loop.
for( String string : video_url){
ArrayList<String> string1 = new ArrayList<>();
string.add(string);
Log.e("LOGS", string1.toString());
}
for the above code the output is coming only one and in this format :
E/LOGS: [https://firebasestorage.googleapis.com/v0/b/myhovi-android.appspot.com/o/MySavedVideo%2FBMMyHoviVideo.mp4?alt=media&token=9bcf98a1-dad1-4f63-864f-7559ef1d49c1]
Please help me with this, I've tried a lot. Thanks.
You are creating a new ArrayList every loop iteration. You should use add instead!
private void jsonParsingVideoData(String projectVideos, String projectId) throws JSONException{
JSONArray jsonArray = new JSONArray(projectVideos);
ArrayList<String> video_urls = new ArrayList<String>();
for(int i = 0; i < jsonArray.length(); i++){
JSONObject jObject = jsonArray.getJSONObject(i);
video_urls.add(jObject.getString("video_url"));
}
}
Related
Hi i have simply problem, but i can find solution. If somebody can show to me solution.
...
(Unirest) HttpResponse<String> paluuREST = AbaXapi.HttpResponse(aString);
enter bring outside to me long Json Array:
So i put this inside Arraylist and short diffrent values...
"{\"body\":[{\"id\":\"1bc4aa42-1ef9-11e7-b023-97a5ff9c3a97\",\"name\":\"DFB-572\",\"imei\":13226005525791,\"vehicle_params\":{\"vin\":null,\"make\":null,\"model\":null,\"plate_number\":null}}]}"
Here is java code:
JSONObject jsonObject = new JSONObject(paluuREST);
System.out.println(jsonObject);
JSONArray jsonArray = jsonObject.getJSONArray("body");
ArrayList<Object> listdata = new ArrayList<Object>();
for (int i=0;i<jsonArray.length();i++){
//Adding each element of JSON array into ArrayList
listdata.add(jsonArray.get(i));
}
System.out.println("Each element of ArrayList");
for(int i=0; i<listdata.size(); i++) {
//Printing each element of ArrayList
System.out.println(listdata.get(i));
}
Error Message:
Exception in thread "main" org.json.JSONException: JSONObject["body"] is not a JSONArray.
at org.json.JSONObject.wrongValueFormatException(JSONObject.java:2628)
So how can be? How i need to change code, thanks for your help.
Please be more carefull in the formulation of the question, if everything is brought to the right, then there are no problems.
public static void main(String[] args) throws Exception {
String s = "{\"body\":[{\"id\":\"1bc4aa42-1ef9-11e7-b023-97a5ff9c3a97\",\"name\":\"DFB-572\",\"imei\":13226005525791,\"vehicle_params\":{\"vin\":null,\"make\":null,\"model\":null,\"plate_number\":null}}]}";
JSONObject obj = new JSONObject(s);
JSONArray body = obj.getJSONArray("body");
System.out.println(body);
ArrayList<Object> objects = new ArrayList<>();
for (Object o : body) {
objects.add(o);
}
System.out.println("objects = " + objects);
}
used org.json lib
I have this array list in java
[ {"pname":"7", "qty":"222"},
{"pname":"8", "qty":"5"},
{"pname":"9", "qty":"60"} ]
I can access the first index which is object, how can I access the first element inside the first object which is "pname" key in java syntax. Please give me sample codes. Thanks.
I tried:
mylist.get(0)
but it only gives me the first object. I don't know how to access the first index inside the object.
here is my whole code from getting the data to parse it into json array and convert to array list
String data = request.getParameter("data");
JSONArray jsonArray = new JSONArray(data);
ArrayList<String> mylist = new ArrayList<String>();
JSONArray this_is_jsonArray = (JSONArray)jsonArray;
if (jsonArray == null) {
System.out.println("json is empty");
}
else
{
int length = this_is_jsonArray.length();
for (int i=0;i<length;i++){
mylist.add(this_is_jsonArray.get(i).toString());
}
}
output.append(mylist);
Basically I'm trying to do a function similar output to this mylist[0].pname in javascript. the expected output all in all is to save those pnames and qtys to a variable for me to able to send each value to the database
In order to write a proper answer you need to be very clear about the input and output you have and you expect.
I don't understand why you want to create a parallel data structure instead of using the parsed JSON but from what I read in comments I think that you need to change the structure of your ArrayList content in order to obtain the result you want to achieve.
String data = "[ {\"pname\":\"7\", \"qty\":\"222\"}, {\"pname\":\"8\", \"qty\":\"5\"}, {\"pname\":\"9\", \"qty\":\"60\"} ]" ;
HashMap<String, String> item = new HashMap<String, String>();
JSONArray jsonArray = new JSONArray(data);
ArrayList<HashMap> mylist = new ArrayList<HashMap>();
if (jsonArray == null) {
System.out.println("json is empty");
} else {
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
item.put("pname", jsonObject.getString("pname"));
item.put("qty", jsonObject.getString("qty"));
mylist.add(item);
}
}
System.out.println(mylist);
First thing to consider is JSON object is not ordered.The first object can be pname or qty, in successive request. To access the fields, give field name as an associative array.
JSONArray jsonArray = new JSONArray(data);
ArrayList<String> mylist = new ArrayList<String>();
JSONArray this_is_jsonArray = (JSONArray)jsonArray;
if (jsonArray == null) {
System.out.println("json is empty");
}
else
{
int length = this_is_jsonArray.length();
for (int i=0;i<length;i++){
// Just this line is modified
mylist.add(this_is_jsonArray.getJSONObject(i).getString("pname").toString());
}
}
I have a trouble finding a way how to parse JSONArray.
It looks like this:
[{"name":"name1","url":"url1"},{"name":"name2","url":"url2"},...]
I know how to parse it if the JSON was written differently (In other words, if I had json object returned instead of an array of objects).
But it's all I have and have to go with it.
*EDIT: It is a valid json. I made an iPhone app using this json, now I need to do it for Android and cannot figure it out.
There are a lot of examples out there, but they are all JSONObject related. I need something for JSONArray.
Can somebody please give me some hint, or a tutorial or an example?
Much appreciated !
use the following snippet to parse the JsonArray.
JSONArray jsonarray = new JSONArray(jsonStr);
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonobject = jsonarray.getJSONObject(i);
String name = jsonobject.getString("name");
String url = jsonobject.getString("url");
}
I'll just give a little Jackson example:
First create a data holder which has the fields from JSON string
// imports
// ...
#JsonIgnoreProperties(ignoreUnknown = true)
public class MyDataHolder {
#JsonProperty("name")
public String mName;
#JsonProperty("url")
public String mUrl;
}
And parse list of MyDataHolders
String jsonString = // your json
ObjectMapper mapper = new ObjectMapper();
List<MyDataHolder> list = mapper.readValue(jsonString,
new TypeReference<ArrayList<MyDataHolder>>() {});
Using list items
String firstName = list.get(0).mName;
String secondName = list.get(1).mName;
public static void main(String[] args) throws JSONException {
String str = "[{\"name\":\"name1\",\"url\":\"url1\"},{\"name\":\"name2\",\"url\":\"url2\"}]";
JSONArray jsonarray = new JSONArray(str);
for(int i=0; i<jsonarray.length(); i++){
JSONObject obj = jsonarray.getJSONObject(i);
String name = obj.getString("name");
String url = obj.getString("url");
System.out.println(name);
System.out.println(url);
}
}
Output:
name1
url1
name2
url2
Create a class to hold the objects.
public class Person{
private String name;
private String url;
//Get & Set methods for each field
}
Then deserialize as follows:
Gson gson = new Gson();
Person[] person = gson.fromJson(input, Person[].class); //input is your String
Reference Article: http://blog.patrickbaumann.com/2011/11/gson-array-deserialization/
In this example there are several objects inside one json array. That is,
This is the json array: [{"name":"name1","url":"url1"},{"name":"name2","url":"url2"},...]
This is one object: {"name":"name1","url":"url1"}
Assuming that you have got the result to a String variable called jSonResultString:
JSONArray arr = new JSONArray(jSonResultString);
//loop through each object
for (int i=0; i<arr.length(); i++){
JSONObject jsonProductObject = arr.getJSONObject(i);
String name = jsonProductObject.getString("name");
String url = jsonProductObject.getString("url");
}
public class CustomerInfo
{
#SerializedName("customerid")
public String customerid;
#SerializedName("picture")
public String picture;
#SerializedName("location")
public String location;
public CustomerInfo()
{}
}
And when you get the result; parse like this
List<CustomerInfo> customers = null;
customers = (List<CustomerInfo>)gson.fromJson(result, new TypeToken<List<CustomerInfo>>() {}.getType());
A few great suggestions are already mentioned.
Using GSON is really handy indeed, and to make life even easier you can try this website
It's called jsonschema2pojo and does exactly that:
You give it your json and it generates a java object that can paste in your project.
You can select GSON to annotate your variables, so extracting the object from your json gets even easier!
My case
Load From Server Example..
int jsonLength = Integer.parseInt(jsonObject.getString("number_of_messages"));
if (jsonLength != 1) {
for (int i = 0; i < jsonLength; i++) {
JSONArray jsonArray = new JSONArray(jsonObject.getString("messages"));
JSONObject resJson = (JSONObject) jsonArray.get(i);
//addItem(resJson.getString("message"), resJson.getString("name"), resJson.getString("created_at"));
}
Create a POJO Java Class for the objects in the list like so:
class NameUrlClass{
private String name;
private String url;
//Constructor
public NameUrlClass(String name,String url){
this.name = name;
this.url = url;
}
}
Now simply create a List of NameUrlClass and initialize it to an ArrayList like so:
List<NameUrlClass> obj = new ArrayList<NameUrlClass>;
You can use store the JSON array in this object
obj = JSONArray;//[{"name":"name1","url":"url1"}{"name":"name2","url":"url2"},...]
Old post I know, but unless I've misunderstood the question, this should do the trick:
s = '[{"name":"name1","url":"url1"},{"name":"name2","url":"url2"}]';
eval("array=" + s);
for (var i = 0; i < array.length; i++) {
for (var index in array[i]) {
alert(array[i][index]);
}
}
URL url = new URL("your URL");
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
BufferedReader reader;
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
//setting the json string
String finalJson = buffer.toString();
//this is your string get the pattern from buffer.
JSONArray jsonarray = new JSONArray(finalJson);
I have some JSON that is returned as follows:
[{"on_arrival_inst":"Ok","order_inst":"Ok","finished_inst":"Ok"},{"on_arrival_inst":"Arrive","order_inst":"Order","finished_inst":"Finished"}]
I am trying to split these into two arrays and get the strings out as follows:
jsonResultsObject = new JSONObject(result);
jsonArray = jsonResultsObject.getJSONArray("");
int count = 0;
String onArrive, onReady, onFinished;
while (count<jsonArray.length()){
JSONObject JO = jsonArray.getJSONObject(count);
onArrive = JO.getString("on_arrival_inst");
onReady = JO.getString("order_inst");
onFinished = JO.getString("finished_inst");
System.out.println(onArrive);
System.out.println(onReady);
System.out.println(onFinished);
count++;
}
However the code never goes into the loop, as the array is not getting populated from the JSONObject?
your result is JSONArray not JSONObject. That's why you must convert it to array not to object.
use
jsonResultsArray = new JSONArray(result);
instead of
jsonResultsObject = new JSONObject(result);
and the full code will be
jsonResultsArray = new JSONArray(result);
int count = 0;
String onArrive, onReady, onFinished;
while (count<jsonResultsArray.length()){
JSONObject JO = jsonResultsArray.getJSONObject(count);
onArrive = JO.getString("on_arrival_inst");
onReady = JO.getString("order_inst");
onFinished = JO.getString("finished_inst");
System.out.println(onArrive);
System.out.println(onReady);
System.out.println(onFinished);
count++;
}
#BigJimmyJones
The fact of that the code does not enter the loop is just because your JSONArray does not have a key named "" but it contains JSONObjects instead. Objects and arrays in JSON have different annotations. See: JSON Reference Website
So your code should be :
jsonResultsObject = new JSONObject(result);
String onArrive, onReady, onFinished;
for (int i=0;i<jsonArray.length();i++){
JSONObject JO = jsonArray.getJSONObject(i);
onArrive = JO.getString("on_arrival_inst");
onReady = JO.getString("order_inst");
onFinished = JO.getString("finished_inst");
System.out.println(onArrive);
System.out.println(onReady);
System.out.println(onFinished);
}
And also ensure that your code is inside a try - catch block to catch JSONException
I have json like this
{"First":["Already exists"],"Second":["Already exists"]}
Currently I am doing like
JSONObject jObject = new JSONObject(myJson);
String first = jObject.getString("First")
But I am getting result like this
first = ["Already exists"]
But I want string without square brackets or ""
Try using JSONArray :
JSONArray jArray = new JSONObject(myJson).getJSONArray("First");
String first = jArray.getString(0);
Your json message with key 'first' is Array. So use should treat as Array.
String string = "{'First':['Already exists'],'Second':['Already exists']}";
JSONObject jObject;
try
{
jObject = new JSONObject(string);
Object myJson = jObject.get("First");
if(myJson instanceof JSONArray)
{
JSONArray jArray = jObject.getJSONArray("First");
for (int i = 0; i < jArray.length(); i++)
{
System.out.println("val : "+jArray.getString(i));
}
}
} catch (JSONException e)
{
e.printStackTrace();
}
Thanks to #m.qadhavi i was able to figure out how it works
//This was my temporary solution
//get no. of garage
properties.setPropertyFeaturesGarage(jsonObject
.getJSONObject("extras")
.getString("property_garages")
.replaceAll("[\"]", "")
.replace('[',' ')
.replace(']',' '));
But after going through #m.qadhavi explanation i corrected my code
//get land size
properties.setPropertyFeaturesLandSize(jsonObject
.getJSONObject("extras")
.getJSONArray("property_size")
.getString(0));
Happy Coding
Try to get Substring like e.g.
String first = jObject.getString("First")
String subFirst = first.substring(2,first.length()-2);