I am having an issue with target targetSdkVersion.I want to move from 27 to 29 but when change to sdk 29 the app runs but does not display videos.But it displays the videos when it is sdk 27 or less.
Please can someone help me fix this.
/**
* A simple {#link Fragment} subclass.
*/
public class ChannelFragment extends Fragment {
private static String GOOGLE_YOUTUBE_API_KEY = "AIzaSyBJQYpQRTzM5wuuhMUxmP7rvP3lbMGtUZ8";//here you should use your api key for testing purpose you can use this api also
private static String CHANNEL_ID = "UCB_ZwuWCAuB7y0B93qvnkWw"; //here you should use your channel id for testing purpose you can use this api also
private static String CHANNLE_GET_URL = "https://www.googleapis.com/youtube/v3/search?part=snippet&order=date&channelId=" + CHANNEL_ID + "&maxResults=50&key=" + GOOGLE_YOUTUBE_API_KEY + "";
private RecyclerView mList_videos = null;
private VideoPostAdapter adapter = null;
private ArrayList<YoutubeDataModel> mListData = new ArrayList<>();
public ChannelFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_channel, container, false);
mList_videos = (RecyclerView) view.findViewById(R.id.mList_videos);
initList(mListData);
new RequestYoutubeAPI().execute();
return view;
}
private void initList(ArrayList<YoutubeDataModel> mListData) {
mList_videos.setLayoutManager(new LinearLayoutManager(getActivity()));
adapter = new VideoPostAdapter(getActivity(), mListData, new OnItemClickListener() {
#Override
public void onItemClick(YoutubeDataModel item) {
YoutubeDataModel youtubeDataModel = item;
Intent intent = new Intent(getActivity(), DetailsActivity.class);
intent.putExtra(YoutubeDataModel.class.toString(), youtubeDataModel);
startActivity(intent);
}
});
mList_videos.setAdapter(adapter);
}
//create an asynctask to get all the data from youtube
private class RequestYoutubeAPI extends AsyncTask<Void, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(Void... params) {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(CHANNLE_GET_URL);
Log.e("URL", CHANNLE_GET_URL);
try {
HttpResponse response = httpClient.execute(httpGet);
HttpEntity httpEntity = response.getEntity();
String json = EntityUtils.toString(httpEntity);
return json;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String response) {
super.onPostExecute(response);
if (response != null) {
try {
JSONObject jsonObject = new JSONObject(response);
Log.e("response", jsonObject.toString());
mListData = parseVideoListFromResponse(jsonObject);
initList(mListData);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
public ArrayList<YoutubeDataModel> parseVideoListFromResponse(JSONObject jsonObject) {
ArrayList<YoutubeDataModel> mList = new ArrayList<>();
if (jsonObject.has("items")) {
try {
JSONArray jsonArray = jsonObject.getJSONArray("items");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject json = jsonArray.getJSONObject(i);
if (json.has("id")) {
JSONObject jsonID = json.getJSONObject("id");
String video_id = "";
if (jsonID.has("videoId")) {
video_id = jsonID.getString("videoId");
}
if (jsonID.has("kind")) {
if (jsonID.getString("kind").equals("youtube#video")) {
YoutubeDataModel youtubeObject = new YoutubeDataModel();
JSONObject jsonSnippet = json.getJSONObject("snippet");
String title = jsonSnippet.getString("title");
String description = jsonSnippet.getString("description");
String publishedAt = jsonSnippet.getString("publishedAt");
String thumbnail = jsonSnippet.getJSONObject("thumbnails").getJSONObject("high").getString("url");
youtubeObject.setTitle(title);
youtubeObject.setDescription(description);
youtubeObject.setPublishedAt(publishedAt);
youtubeObject.setThumbnail(thumbnail);
youtubeObject.setVideo_id(video_id);
mList.add(youtubeObject);
}
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
return mList;
}
}
I am trying to display array data using JSON Volley in PostsBasedOnCategory.java. Array data that I want to display are, Title post, and excerpt based on specific category from https://www.kisahmuslim.com/wp-json/wp/v2/categories. But unfortunately, it only showing one result.
Below you can check my code
DaftarCategories.java
public class CallingPage extends AsyncTask<String, String, String> {
HttpURLConnection conn;
java.net.URL url = null;
private int page = 1;
#Override
protected void onPreExecute() {
super.onPreExecute();
//this method will be running on UI thread
showNoFav(false);
pb.setVisibility(View.VISIBLE);
}
#Override
protected String doInBackground(String... params) {
try {
url = new URL("https://www.kisahmuslim.com/wp-json/wp/v2/categories");
}
catch(MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return e.toString();
}
try {
// Setup HttpURLConnection class to send and receive data from php and mysql
conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(READ_TIMEOUT);
conn.setConnectTimeout(CONNECTION_TIMEOUT);
conn.setRequestMethod("GET");
// setDoOutput to true as we recieve data from json file
conn.setDoOutput(true);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
return e1.toString();
}
try {
int response_code = conn.getResponseCode();
// Check if successful connection made
if (response_code == HttpURLConnection.HTTP_OK) {
// Read data sent from server
InputStream input = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
StringBuilder result = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
// Pass data to onPostExecute method
return (result.toString());
} else {
return("koneksi gagal");
}
} catch (IOException e) {
e.printStackTrace();
return e.toString();
} finally {
conn.disconnect();
}
}
protected void onPostExecute(String result)
{
JsonArrayRequest stringRequest = new JsonArrayRequest(Request.Method.GET, SumberPosts.HOST_URL+"wp/v2/categories/", null, new Response.Listener<JSONArray>()
{
#Override
public void onResponse(JSONArray response) {
// display response
Log.d(TAG, response.toString() + "Size: "+response.length());
// agar setiap kali direfresh data tidak redundant
typeForPosts.clear();
for(int i=0; i<response.length(); i++) { //ambil semua objek yang ada
final CategoriesModel post = new CategoriesModel();
try {
Log.d(TAG, "Object at " + i + response.get(i));
JSONObject obj = response.getJSONObject(i);
post.setId(obj.getInt("id"));
post.setPostURL(obj.getString("link"));
//Get category name
post.setCategory(obj.getString("name"));
//////////////////////////////////////////////////////////////////////////////////////
// getting article konten
JSONObject postCategoryParent = obj.getJSONObject("_links");
JSONArray postCategoryObj = postCategoryParent.getJSONArray("wp:post_type");
JSONObject postCategoryIndex = postCategoryObj.getJSONObject(0); //ambil satu objek saja
String postCategoryUrl = postCategoryIndex.getString("href"); //satu objek yang dimaksud adalah href
if(postCategoryUrl != null) {
Log.d(TAG, postCategoryIndex.getString("href"));
JsonArrayRequest getKonten = new JsonArrayRequest(Request.Method.GET, postCategoryUrl, null, new Response.Listener<JSONArray>()
{
#Override
public void onResponse(JSONArray respon) {
Log.d(TAG, respon.toString() + "Size: "+respon.length());
for(int d=0; d<respon.length(); d++) {
try {
//Log.d(TAG, "Object at " + i + respon.get());
JSONObject objek = respon.getJSONObject(d); //ambil semua artikel yang tersedia di postCategoryUrl
post.setId(objek.getInt("id"));
post.setCreatedAt(objek.getString("date"));
post.setPostURL(objek.getString("link"));
//Get category title
JSONObject titleObj = objek.getJSONObject("title");
post.setJudul(titleObj.getString("rendered"));
//Get excerpt
JSONObject exerptObj = objek.getJSONObject("excerpt");
post.setExcerpt(exerptObj.getString("rendered"));
// Get content
JSONObject contentObj = objek.getJSONObject("content");
post.setContent(contentObj.getString("rendered"));
}
catch (JSONException e) {
e.printStackTrace();
}
}// for category
} //onResponse2
}, new Response.ErrorListener() { //getKonten
#Override
public void onErrorResponse(VolleyError error) {
pb.setVisibility(View.GONE);
Log.d(TAG, error.toString());
}
});
queue.add(getKonten);
} //if postCategoryUrl
//////////////////////////////////////////////////////////////////////////////////////
typeForPosts.add(post);
} //try 1
catch (JSONException e) {
e.printStackTrace();
}
} //for 1
pb.setVisibility(View.GONE);
recycleViewWordPress.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
} //onResponse1
}, new Response.ErrorListener() { //stringRequest
#Override
public void onErrorResponse(VolleyError error) {
showNoFav(true);
pb.setVisibility(View.GONE);
Log.e(TAG, "Error: " + error.getMessage());
Toast.makeText(getContext(), "Tidak bisa menampilkan data. Periksa kembali sambungan internet Anda", Toast.LENGTH_LONG).show();
}
});
// Add the request to the RequestQueue.
queue.add(stringRequest);
} //onPostExecute
} //CallingPage
#Override
public void onPostingSelected(int pos) {
CategoriesModel click = typeForPosts.get(pos);
excerpt = click.getExcerpt();
//gambar = click.getPostImg();
judul = click.getJudul();
//url = click.getPostURL();
content = click.getContent();
Bundle bundle = new Bundle();
bundle.putString("judul", judul);
//bundle.putString("gambar", gambar);
//bundle.putString("url", url);
bundle.putString("content", content);
bundle.putString("excerpt", excerpt);
PostsBasedOnCategory bookFragment = new PostsBasedOnCategory();
bookFragment.setArguments(bundle);
AppCompatActivity activity = (AppCompatActivity) getContext();
activity.getSupportFragmentManager().beginTransaction().replace(R.id.flContainerFragment, bookFragment).addToBackStack(null).commit();
}
PostsBasedOnCategory.java
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_wordpress, container,false);
ButterKnife.bind(this,view);
setHasOptionsMenu(true);
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
swipeRefreshLayout =(SwipeRefreshLayout) getActivity().findViewById(R.id.swipeRefreshLayout);
recycleViewWordPress =(RecyclerView) getActivity().findViewById(R.id.recycleViewWordPress);
pb = (ProgressBar) getActivity().findViewById(R.id.loadingPanel);
noFavtsTV = getActivity().findViewById(R.id.no_favt_text);
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
swipeRefreshLayout.setRefreshing(false);
pb.setVisibility(View.VISIBLE);
recycleViewWordPress.setAdapter(mAdapter);
}
});
typeForPosts = new ArrayList<CategoriesModel>();
recycleViewWordPress.setHasFixedSize(true);
recycleViewWordPress.setLayoutManager(new LinearLayoutManager(getContext()));
recycleViewWordPress.setNestedScrollingEnabled(false);
mAdapter = new AdapterCategoryPosts(getContext(), typeForPosts, this);
recycleViewWordPress.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
loadData();
}
public void loadData() {
Bundle bundel = this.getArguments();
long id = bundel.getLong("id");
String kategori = bundel.getString("kategori");
String title = bundel.getString("judul");
String excerpt = bundel.getString("excerpt");
String pict = bundel.getString("gambar");
String url = bundel.getString("url");
String konten = bundel.getString("konten");
CategoriesModel list = new CategoriesModel();
list.setId(id);
list.setCategory(kategori);
list.setJudul(title);
list.setExcerpt(excerpt);
list.setPostImg(pict);
list.setPostURL(url);
list.setContent(konten);
typeForPosts.add(list);
}
Logcat
2019-09-07 12:01:27.941 11246-11246/com.kursusarabic.arabicforfun D/postFrag: [{"id":12,"count":53,"description":"","link":"https:\/\/kisahmuslim.com\/category\/kisah-nyata\/biografi-ulama","name":"Biografi Ulama","slug":"biografi-ulama","taxonomy":"category","parent":29,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/12"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"up":[{"embeddable":true,"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/29"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":26,"count":8,"description":"","link":"https:\/\/kisahmuslim.com\/category\/download","name":"Download","slug":"download","taxonomy":"category","parent":0,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/26"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":1812,"count":9,"description":"","link":"https:\/\/kisahmuslim.com\/category\/info","name":"Info","slug":"info","taxonomy":"category","parent":0,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/1812"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=1812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":17,"count":3,"description":"","link":"https:\/\/kisahmuslim.com\/category\/kisah-nyata\/kisah-birrul-walidain","name":"Kisah Birrul Walidain","slug":"kisah-birrul-walidain","taxonomy":"category","parent":29,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/17"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"up":[{"embeddable":true,"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/29"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":25,"count":31,"description":"","link":"https:\/\/kisahmuslim.com\/category\/kisah-nyata\/kisah-hidayah-islam","name":"Kisah Hidayah Islam","slug":"kisah-hidayah-islam","taxonomy":"category","parent":29,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/25"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"up":[{"embeddable":true,"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/29"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":16,"count":49,"description":"","link":"https:\/\/kisahmuslim.com\/category\/kisah-nyata\/kisah-kaum-durhaka","name":"Kisah Kaum Durhaka","slug":"kisah-kaum-durhaka","taxonomy":"category","parent":29,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/16"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"up":[{"embeddable":true,"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/29"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=1
2019-09-07 12:01:27.942 11246-11246/com.kursusarabic.arabicforfun D/postFrag: Object at 0{"id":12,"count":53,"description":"","link":"https:\/\/kisahmuslim.com\/category\/kisah-nyata\/biografi-ulama","name":"Biografi Ulama","slug":"biografi-ulama","taxonomy":"category","parent":29,"meta":[],"_links":{"self":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/12"}],"collection":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories"}],"about":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/taxonomies\/category"}],"up":[{"embeddable":true,"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/categories\/29"}],"wp:post_type":[{"href":"https:\/\/kisahmuslim.com\/wp-json\/wp\/v2\/posts?categories=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
2019-09-07 12:01:27.942 11246-11246/com.kursusarabic.arabicforfun D/postFrag: https://kisahmuslim.com/wp-json/wp/v2/posts?categories=12
You cannot call network requests in loop, Use async processing or
Retrofit & RxJava multiple requests complete
and after updating typeForPosts, there is no need to setAdapter on recyclerview just call adapter.notifyDataSetChanged()
JSON data format:
I am trying to fetch this array json data but not getting it.
[{"Items":"Chicken Burger","Price":"250","Quantity":"2"},
{"Items":"Hamburger","Price":"230","Quantity":"3"}]
MyCartActivity class:
I tried using Volley and I am now getting that JSONArray cannot be converted to JSONObject error. Can you mention where to change so that I can get my data?
final JsonObjectRequest request = new JsonObjectRequest (Request.Method.POST, fetchurl, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("");
for (int i=0; i < jsonArray.length(); i++){
JSONObject object = jsonArray.getJSONObject(i);
String Price = object.getString("Price");
String Name = object.getString("Items");
String Quantity = object.getString("Quantity");
adapter = new CartAdapter(MyCartActivity.this, list);
list.add(new CartPojo(Price, Name, Quantity));
adapter.notifyDataSetChanged();
progressbar.setVisibility(View.GONE);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
});
requestQueue.add(request);
}
Adapter class:
public CartAdapter(Activity activity, List datalist) {
this.activity = activity;
this.datalist = datalist;
}
#Override
public int getCount() {
return datalist.size();
}
#Override
public Object getItem(int position) {
return datalist.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.cart_item_layout, null);
TextView ItemName = convertView.findViewById(R.id.item_name);
TextView Price = convertView.findViewById(R.id.item_price);
TextView Quantity = convertView.findViewById(R.id.items_quantity);
CartPojo pojo = datalist.get(position);
ItemName.setText(String.valueOf(pojo.getName()));
Price.setText(String.valueOf(pojo.getPrice()));
Quantity.setText(String.valueOf(pojo.getQuantity()));
return convertView;
}
Please provide me some solutions....
The response can't be parsed into JSONObject, because its not that, but a JSONArray. You can send a simple StringRequest and then parse the response string into an JSONArray using JSONArray(response) constructor.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
JSONArray arr = new JSONArray(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
Or use the JsonArrayRequest. Here's an example.
I have list of tasks. When I delete my one of the task my list still shows that task in the list but on server side i have updated list I am not able to refresh my list. I am getting new task array from server but not able to show it. When I launched my app again then it is showing the updated list. How can I get updated list without killing the app? Both the times I have updated array but not able to show it on the view.
public class ModelClass {
private String message;
private String statusCode;
private Response[] res = null;
protected transient PropertyChangeSupport _propertyChangeSupport = new PropertyChangeSupport(this);
public ModelClass() {
super();
clickEvent(new ActionEvent());
}
public static String taskId;
public void setTaskId(String taskId) {
System.out.print(taskId);
this.taskId = taskId;
}
public String getTaskId() {
return taskId;
}
public PropertyChangeSupport getPropertyChangeSupport() {
return _propertyChangeSupport;
}
public void setMessage(String message) {
String oldMessage = this.message;
this.message = message;
_propertyChangeSupport.firePropertyChange("message", oldMessage, message);
}
public String getMessage() {
return message;
}
public void setStatusCode(String statusCode) {
String oldStatusCode = this.statusCode;
this.statusCode = statusCode;
_propertyChangeSupport.firePropertyChange("statusCode", oldStatusCode, statusCode);
}
public String getStatusCode() {
return statusCode;
}
public void setRes(Response[] res) {
Response[] oldRes = this.res;
this.res = res;
System.out.println(res);
_propertyChangeSupport.firePropertyChange("res", oldRes, res);
System.out.println("refreshing here ");
}
public Response[] getRes() {
return res;
}
#Override
public String toString() {
return "ClassPojo [response = " + res + ", message = " + message + ", statusCode = " + statusCode + "]";
}
public void addPropertyChangeListener(PropertyChangeListener l) {
_propertyChangeSupport.addPropertyChangeListener(l);
}
public void removePropertyChangeListener(PropertyChangeListener l) {
_propertyChangeSupport.removePropertyChangeListener(l);
}
public class Response {
private String taskId;
private String taskType;
private Integer taskTime;
private String taskName;
private PropertyChangeSupport _propertyChangeSupport = new PropertyChangeSupport(this);
Response(String taskId, String taskType, String taskName) {
super();
this.taskId = taskId;
this.taskType = taskType;
this.taskName = taskName;
}
public void setTaskId(String taskId) {
String oldTaskId = this.taskId;
this.taskId = taskId;
_propertyChangeSupport.firePropertyChange("taskId", oldTaskId, taskId);
}
public String getTaskId() {
return taskId;
}
public void setTaskType(String taskType) {
String oldTaskType = this.taskType;
this.taskType = taskType;
_propertyChangeSupport.firePropertyChange("taskType", oldTaskType, taskType);
}
public String getTaskType() {
return taskType;
}
public void setTaskTime(Integer taskTime) {
Integer oldTaskTime = this.taskTime;
this.taskTime = taskTime;
_propertyChangeSupport.firePropertyChange("taskTime", oldTaskTime, taskTime);
}
public Integer getTaskTime() {
return taskTime;
}
public void setTaskName(String taskName) {
String oldTaskName = this.taskName;
this.taskName = taskName;
_propertyChangeSupport.firePropertyChange("taskName", oldTaskName, taskName);
}
public String getTaskName() {
return taskName;
}
#Override
public String toString() {
return "ClassPojo [taskId = " + taskId + ", taskType = " + taskType + ", taskTime = " + taskTime +
", taskName = " + taskName + "]";
}
public void addPropertyChangeListener(PropertyChangeListener l) {
_propertyChangeSupport.addPropertyChangeListener(l);
}
public void removePropertyChangeListener(PropertyChangeListener l) {
_propertyChangeSupport.removePropertyChangeListener(l);
}
}
protected transient ProviderChangeSupport providerChangeSupport = new ProviderChangeSupport(this);
public void addProviderChangeListener(ProviderChangeListener l) {
providerChangeSupport.addProviderChangeListener(l);
}
public void removeProviderChangeListener(ProviderChangeListener l) {
providerChangeSupport.removeProviderChangeListener(l);
}
public void clickEvent(ActionEvent actionEvent) {
try {
JSONObject paramsMap = new JSONObject();
paramsMap.put("userId", "1");
HttpURLConnection httpURLConnection = null;
try {
URL url = new URL("http://ec2-54-226-57-153.compute-1.amazonaws.com:8080/#########");
httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setReadTimeout(120000);
httpURLConnection.setConnectTimeout(120000);
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("Content-Type", "application/json");
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
httpURLConnection.connect();
OutputStream os = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
os.write(paramsMap.toString().getBytes());
bufferedWriter.flush();
bufferedWriter.close();
os.close();
if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream is = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
StringBuilder builder = new StringBuilder();
String line = bufferedReader.readLine();
while (line != null) {
builder.append(line + "\n");
line = bufferedReader.readLine();
}
is.close();
if (httpURLConnection != null)
httpURLConnection.disconnect();
System.out.println(builder.toString());
JSONObject json = new JSONObject(builder.toString());
String status = json.optString("statusCode");
String message = json.optString("message");
String response = json.optString("response");
System.out.println(status);
System.out.println(message);
// System.out.println(response);
JSONArray objarr = json.optJSONArray("response");
Response[] temp_res = new Response[objarr.length()];
for (int i = 0; i < objarr.length(); i++) {
System.out.println(objarr.getJSONObject(i));
JSONObject obj = objarr.getJSONObject(i);
String task = obj.optString("taskName");
taskId = obj.optString("taskId");
String taskType = obj.optString("taskType");
System.out.println(task);
System.out.println(taskId);
System.out.println(taskType);
temp_res[i] = new Response(taskId, taskType, task);
}
setRes(temp_res);
} else {
if (httpURLConnection != null)
httpURLConnection.disconnect();
System.out.println("Invalid response from the server");
}
} catch (Exception e) {
e.printStackTrace();
if (httpURLConnection != null)
httpURLConnection.disconnect();
} finally {
if (httpURLConnection != null)
httpURLConnection.disconnect();
}
} catch (Exception e) {
e.printStackTrace();
}
}
I think you need to add providerChangeSupport.fireProviderRefresh("res");
and you have to make public method for providerChangeSupport.
Here is the link : https://community.oracle.com/message/13203364#13203364
Other than the fix suggested by Rashi Verma, there is one more change required.
The code snippet:
res = (Response[]) res_new.toArray(new Response[res_new.size()]);
setRes(res);
needs to be changed to:
Response[] temp_res;
temp_res = (Response[]) res_new.toArray(new
Response[res_new.size()]);
setRes(temp_res);
Currently, because the value of res is changed before invoking setRes, the propertyChangeEvent is not fired inside setRes. Both this propertyChangeEvent and the providerRefresh are needed for the changes you are making to start reflecting on the UI.
in the below code my arrayList will be empty after JsonArrayRequest block.
I set break point at this line: "int size = arrayList.size();"
every thing is OK until "while" loop finishes. after that allayList is empty.
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.GET, json_url,(String) null,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
int count=0;
int responseLength = response.length();
responseLength--;
while (count<responseLength)
{
try {
JSONObject jsonObject = response.getJSONObject(count);
Contact contact = new Contact(jsonObject.getString("title"),
jsonObject.getString("email"),
jsonObject.getString("description"),
jsonObject.getString("date"),
jsonObject.getBoolean("status"));
arrayList.add(contact);
int size = arrayList.size();
count++;
} catch (JSONException e) {
e.printStackTrace();
}
}
int size = arrayList.size();
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context,"Error....",Toast.LENGTH_SHORT).show();
error.printStackTrace();
}
}
);
int size = arrayList.size();
VolleySingleton.getmInstance(context).addToRequestQueue(jsonArrayRequest);
return arrayList;
I will show what i did using CallBack interface:
in onCreate() method:
recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(linearLayoutManager);
BackgroundTask backgroundTask = new BackgroundTask(this);
backgroundTask.getContacts(new BackgroundTask.arrayListCallBack() {
#Override
public void onSuccess(ArrayList<Contact> contacts) {
RecyclerView.Adapter adapter = new RecyclerAdapter(MainActivity.this, contacts);
recyclerView.setAdapter(adapter);
}
#Override
public void onFail(String error) {
Toast.makeText(MainActivity.this, error, Toast.LENGTH_LONG).show();
}
});
and in the BackgroundTask class:
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.POST, server_url, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
int count = 0;
while (count < response.length()) {
try {
JSONObject jsonObject = response.getJSONObject(count);
Contact contact = new Contact(jsonObject.getString("name"), jsonObject.getString("section"));
contacts.add(contact);
Log.d("process request", "....."+jsonObject.getString("name"));
count++;
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(context, e.getMessage()+"\nError in Response", Toast.LENGTH_LONG).show();
}
callBack.onSuccess(contacts);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
Toast.makeText(context, error.getMessage()+"\nError in Connection", Toast.LENGTH_LONG).show();
callBack.onFail("There's error ...");
}
});
MySingleton.getInstance(context).addToRequestQueue(jsonArrayRequest);
}
public interface arrayListCallBack {
void onSuccess(ArrayList<Contact> contacts);
void onFail(String error);
}