How to Programming with Android-volley

java,android,callback,android-volley

The VolleyError object has a networkResponse reference, try to check it to see if you can get some information from there. @Override public void onErrorResponse(VolleyError error) { String body; //get status code here String statusCode = String.valueOf(error.networkResponse.statusCode)); //get response body and parse with appropriate encoding if(error.networkResponse.data!=null) { try { body...

Callback function on Android

I am doing it like this: Place all volley callings in api file which is called from Application singleton, public Request<?> getMessage(int messageId, boolean maxBodySize, Response.Listener<MessageData> responseListener, Response.ErrorListener errorListener) { String url = apiURL + MESSAGE + "?"; int method = Request.Method.GET; GsonRequest<MessageData> request = new GsonRequest<MessageData>( method, url, MessageData.class,...

Volley - more than one request in the same Activity android

android,android-activity,android-volley

Instead of implementing onResponse as part of the class, you can instantiate a new Response.Listener with the request. This way you will have a separate listener for each request. StringRequest stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener() { @Override public void onResponse(String response) { // individual response here } },...

Android volley Timeout Exception when using RequestFuture.get()

java,android,network-programming,android-volley,future

Sad that no-one could help answer this question but i managed to solve this issue like below: The timeout will happen to the RequestFuture.get() if it is on the same thread as the UI thread. I have changed the mechanism of the request so that the request is done on...

Send post data to server using Volley android

android,post,android-volley

private void postUsingVolley() { String tag_json_obj = "json_obj_req"; final ProgressDialog pDialog = new ProgressDialog(this); pDialog.setMessage("posting..."); pDialog.show(); final String mVendorId = DeviceDetails.getInstance(mContext).getVendor_id(); String mUserId = UserModel.getInstance(mContext).getUser_id(); final HashMap<String, String> postParams = new HashMap<String, String>(); sendFeedbackParams.put("key1", value1); sendFeedbackParams.put("key2", value2); sendFeedbackParams.put("key3", value3);...

Google Volley Imageloader - Uncache a 302 redirect request or intercepting the redirect url

android,redirect,caching,android-volley,http-status-code-302

The imageloader provided from android volley uses a cachekey in order to cache requests, but during its process it makes a simple image request. So just use a request: Request<Bitmap> imageRequest = new ImageRequest(requestUrl, listener, maxWidth, maxHeight, scaleType, Bitmap.Config.RGB_565, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { imageView.setImageResource(R.drawable.default_avatar); }...

Diffrence between JsonObjectRequest & JsonArrayRequest in volley in android?

android,json,http,android-volley

Json Object & Json array is type request. Json object will try to fetch a json array where as json object will fetch json object.However you can use json object & create a json array in a json object.

Android Volley JSON response

android,json,android-volley,jsonobject,postman

The problem was in Postman caching It's better to disable the parameter "Auto save request" in the settings....

Volley Request Queue NullPointerException

java,android,android-volley

You are firing off a search before you've set the requestqueue from singleton. So onCreate, you check for the Intent and then start a search before you've got a handle on the volley singleton and, in turn, the requestqueue. Try moving the volley code before the Intent check, like this:...

Post JsonObject with Volley

android,json,parse.com,android-volley

You can send the JSONObject without overiding the getParams or getBodyContentType. Something like this for example JSONObject object = new JSONObject(); JsonObjectRequest jr = new JsonObjectRequest(Request.Method.POST, url, object, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { } });...

Post request on volley not sending parameters on first click

android,http-post,android-volley

Your return String respuesta is set asynchronously. The I/Server response:﹕ 1 that you're seeing is actually the response that you're getting back from the first button press. You should move your log into the onResponse public void onResponse(String s) { respuesta = s; //todo add log and logic here }...

How can I return value from function onResponse of Volley?

android,httprequest,android-volley

You want to use callback interfaces like so: public String get_String(VolleyCallback callback) { StringRequest strReq = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() { @Override public void onResponse(String response) { result=response; callback.onSuccess(result); } }... }} public interface VolleyCallback{ void onSuccess(String result); } Example code inside activity: public void onResume(){ super.onResume(); getString(new VolleyCallback(){...

How/Where to store HTTP-Request URLs in Android?

I have seen people generally doing the following things Keeping URLs in a holder class with static fields Keeping URLs in a resource XML file. This works exactly the same way as your strings.xml, but it is in a separate file. This comes in handy when using different server URLs...

Android Volley : bad urls encoding

android,json,google-maps,google-maps-api-3,android-volley

I found the answer. It was in encoding. Workable solution : if (order.getDestinationAddress().getStreet() != null && !order.getDestinationAddress().getStreet().equalsIgnoreCase("")) addressDestinationUrl.append(URLEncoder.encode(order.getDestinationAddress().getStreet(), "UTF-8") + ", "); if (order.getDestinationAddress().getHouseNumber() != null && !order.getDestinationAddress().getHouseNumber().equalsIgnoreCase(""))...

How to perform Infinite scrolling in android using Volley request

android,android-listview,android-volley,infinite-scroll

for endless scrolling refer here https://github.com/codepath/android_guides/wiki/Endless-Scrolling-with-AdapterViews .. for each customLoadMoreDataFromApi(page) call load data to the adapter and call notify data set changed..

Whether picasso supports image disk caching

android,caching,android-volley,disk,picasso

Picasso supports disk caching, and it's relying on the HTTP client for this. If you're using it with OkHttp, the default size for the disk cache will be around 50 MB (2% of total space, max 50MB, min 5MB). If this doesn't meet your needs, you can either implement your...

Fixing javax.net.ssl.SSLPeerUnverifiedException: No peer certificate

java,android,https,ssl-certificate,android-volley

I fought a lot with this problem. It appeared that the server I was sending to has a virtual host (hosted on GAE). On Android 5.0 this issue is solved, but bellow Android 5.0 you have to add SNI support yourself. Here is an explanation of this problem http://blog.dev001.net/post/67082904181/android-using-sni-and-tlsv1-2-with-apache. So...

Send a JSONArray POST request with android volley library

java,android,json,http-post,android-volley

the android volley team maybe add it later . but for now you can do this : creat your class and extends JsonArrayRequest then you should overide : @Override protected Map<String, String> getParams() throws AuthFailureError { HashMap<String, String> params = new HashMap<String, String>(); params.put("name", "value"); return params; } then make...

Add item to ListView (JAVA)

android,json,listview,android-volley

My problem is solved !!!!!!! just define my ListItems as a static variable in my MainActivity : public static ArrayList<String> listItems=new ArrayList<String>(); ...

Is volley library better or native HTTPClient for exchanging data with server? [closed]

android,http,android-volley

For below Ginger Bread, Volley uses HttpClient it self and for later version HttpURLConnection. So basically it is wrapper for these. It offers some ease of use ie. cancel pending calls, Async in nature, response on UI thread, Easy image downloading and cache/storing (NetworkImageView), Rest based calls (JSON handling), Retrying...

Android volley cancel request behavior

android,request,android-volley

My guess would be that in the first case, the request has only been added to the RequestQueue, which is why calling cancelAll() works. In the second case, there is a slight delay between starting the request and pausing/destroying the Activity: in that delay, the HTTP request has begun. You...

Consuming APIs with volley?

android,arrays,json,rest,android-volley

Try using JsonObjectRequest(int method, String url, JSONObject jsonRequest, Listener<JSONObject> listener, ErrorListener errorListener) instead of JsonArrayRequest as your response seems to be JSONObject Also, there is no such key image in your response Books.setPhoto_url(obj.getString("image")); Looking at your JSON response, if you try following code, it should work: JsonObjectRequest artistReq = new...

Error in Volley Patch

java,android,android-volley

Are you sure you are using correct version of Volley Library? I just tried your code in Lollipop and it is working OK. If you are using Volley library as external project, check the Method interface of Request class in com.android.volley package. It should have a PATCH variable in it....

how to access a value in JsonArray with volley library

Ok i fix it. JSONObject enclosureObj = obj.getJSONObject("enclosure"); JSONObject attributesObj = enclosureObj.getJSONObject("@attributes"); aNew.setImageURL(obj.getString("url")); i forget the @ in @attributes...

how to send json object to server using volley in andorid

android,json,android-volley,realm

Third parameter in JsonObjectRequest is for passing post parameters in jsonobject form. And for header you need to send two separate values one for content-type one for charset. private void makeJsonObjReq() { showProgressDialog(); Map<String, String> postParam= new HashMap<String, String>(); postParam.put("un", "[email protected]"); postParam.put("p", "somepasswordhere"); JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST, Const.URL_LOGIN, new...

How I can use Realm to parse a large JSON and storing data

Realm currently doesn't support primitive arrays. You JSON has this: "languages" : ["fr", "en"] For Realm to automatically map the JSON to your MyString class it would have to be converted to something like this: "languages" : [ { "str" : "fr"} , { "str" : "en" } ] You...

How do I put generic type for Gson's TypeToken?

android,json,gson,android-volley

You have to specify the Type explicitly. There's type erasure in Java, which basically means that at runtime all instances of T are replaced with Object. You should either write three different deserializers for different response types(POJOA, POJOB, POJOC) or write a generic one. Something like this should work: public...

Cannot instantiate a list in fragment using volley library

android,android-fragments,android-volley

My take is you forgot to add that application implementation in the manifest like this <application android:name=".package.AppController " ... /> That's why getInstance returns null. ...

android volley will resize(subsample) large images automatically

android,string,web-services,request,android-volley

Im assuming you're using an ImageLoader object to launch the request to get the image you need. ImageLoader.get() has an overloaded method which accepts maxWidth / maxHeight parameters which you should always use (unless you know for a fact that the image you're fetching is reasonably sized): public ImageContainer get(String...

Android volley library is not accepting parameters in url from getParam()

getParam() method not working with GET request on volley.its working fine with POST methods.you have to set up complete URL with parameters.

Networking app architecture

android,facebook,rest,network-programming,android-volley

First of all I am not working with Volley but with the Apache HttpClient, this should not matter for your question though. Having the code which handles the Post Requests in your Activities is a bad solution. See: Single Responsibility Principle Your idea with creating a SessionManager is really good...

Making two requests with android volley

My take is this. You are calling two methods where each one does this: pDialog = new ProgressDialog(getActivity()); The second time you instantiate a progress dialog on the same reference, the old progress dialog which is still showing is no longer reachable. So it's not that the requests are loading...

Volley JsonObjectRequest sending 3 JSONObject in same request?

php,android,android-volley,login-script

Try to do the following: app.setRetryPolicy(new DefaultRetryPolicy( MY_SOCKET_TIMEOUT_MS, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)); Here you can change the timeout (MY_SOCKET_TIMEOUT_MS) and change the number of attempts (DefaultRetryPolicy.DEFAULT_MAX_RETRIES)...

Google Volley Android: Login

Basically you have to override the getParameter function of your Request to send datas to your server.

Empty Response Received on Android POST Request

android,rest,android-volley

The correct Answer for this question is shown below. In this version of the request, the Post parameters are overriden in the existing getParams() method of Volley. The mistake I did was to not override that method. String url = "http://httpbin.org/post"; StringRequest postRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {...

Waiting for JSON response before returning the function?

I'm calling doWebRequestLogin() on the UI within an onclick function Then you do NOT want to "wait for the response". That will freeze your UI for however long the network I/O takes, and your users will... be unimpressed. Instead, update your UI in the onResponse() and onErrorResponse() methods. This...

Android Volley too big string in JsonRequest

android,android-volley,networkimageview

Just add android:largeHeap="true" line in your application AndroidMenifest.xml . It might help you. Like : <application android:name="" android:icon="@drawable/ic_launcher" android:label="@string/app_name" **android:largeHeap="true"** ... </application> ...

android - rounded NetwrokImageView

you can also use simple image view for that ImageLoader imageLoader = AppController.getInstance().getImageLoader(); // If you are using normal ImageView imageLoader.get(Const.URL_IMAGE, new ImageListener() { @Override public void onErrorResponse(VolleyError error) { Log.e(TAG, "Image Load Error: " + error.getMessage()); } @Override public void onResponse(ImageContainer response, boolean arg1) { if (response.getBitmap() != null)...

how to read response header's status code and response body in volley library android

java,android,android-volley,androidhttpclient

There are a lot sub classes of VolleyError, you can check the error type with instanceOf checking.

What is the use of Volley API in android?

Volley makes it much easier to handle responses as Strings, JSONObjects and JSONArrays. Volley does the work on a separate thread internally, so no need for you to create an AsyncTask. Volley creates a central RequestQueue that performs HTTP requests serially. Volley allows you to easily synchronize pausing, resuming...

Android JSON parsing using Volley

android,json,gson,android-volley

This is how I would do it with Gson. The first order of business is to add the library. I sure hope you are using Android Studio so you can add this in your build.gradle compile 'com.google.code.gson:gson:2.3.1' And then we imitate the response as corresponding plain old java object (POJO)....

Parsing JSON object with JSON array inside it using Volley

android,http-post,android-volley

There is a comma in the results array's item. Which means there should be another element(string,integer etc) as part of that JSONObject(first item of results array). Hence you get the JSON parsing error. "results" : [ { "id" : "1243233", } ] should be "results" : [ { "id"...

Android Volley: null value being received at server for String params sent with POST request

Use the code given below and let me know if you are facing any issue JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST, url, null, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { Log.d(TAG, response.toString()); pDialog.hide(); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { VolleyLog.d(TAG, "Error: " + error.getMessage());...

JSONArray response with Volley for Android

android,android-volley,okhttp

I the problem might be - you are already getting response as a JSONArray. So, you can Call JSONObject jresponse = response.getgetJSONObjest(0); and if you have more than 1 object in response, then for(int i = 0; i < response.length(); i++){ JSONObject jresponse = response.getJSONObject(i); String nickname = jresponse.getString("nickname"); Log.d("nickname",...

How to configure the Http Cache when using Volley with OkHttp?

OkHttp is a kind of HTTP client like HttpUrlConnection which implements HTTP cache, we can disable the cache of OkHttp like below: OkHttpClient client = new OkHttpClient(); client.setCache(null); Then, we can keep one copy of HTTP cache maintained by Volley....

CustomListview Volley with Image doesn't works in real device

android,listview,android-volley

Add this code to your onCreate or init method. StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); If this doesn't work please post logcat showing warning or error....

Custom List View with thumbnail using Android Volley Library will not load any results

java,android,json,android-listview,android-volley

You are referring to wrong xml in you MainActivity. Kindly create a new xml for ex activity_main.xml and initiate your list view there. Also in your code you are Calling JSONArray however your Json output shows it Json Object. Kindly change your code to JSONObject as shown below JsonObjectRequest jsonObjectRequest...

Android volley library, where to use and where not to

android,android-asynctask,android-volley

I mostly use Volley for only GET, POST api calls because Volley holds all responses in memory during parsing. For large download operations, consider using an alternative like DownloadManager. Source: https://developer.android.com/training/volley/index.html

Android Studio: import com.android.volley.xxxx Cannot Resolve Symbol 'xxxx'

android,json,android-listview,android-volley

I'd double check to make sure your build.gradle includes: dependencies { compile fileTree(dir: 'libs', include: '*.jar') ... } And also make sure you've ran a sync....

Why do I get a socket time out?

android,eclipse,http,networking,android-volley

Did you set socket timeout value as 5000ms? If so, the request is failing since it is taking more than 5000ms. Try increasing the time out value in your custom Request class public static final int MY_SOCKET_TIMEOUT_MS = 30000; @Override public Request<?> setRetryPolicy(RetryPolicy retryPolicy) { retryPolicy = new DefaultRetryPolicy(MY_SOCKET_TIMEOUT_MS, DefaultRetryPolicy.DEFAULT_MAX_RETRIES...

Can't use Volley to display two custom ListView

android,json,android-layout,listview,android-volley

Firstly, private String URL_FEED = "http://wangjian.site90.net/json/api_klmeet_sightseeing_face.json"; in your MainActivity doesn't exist and when I tried it in AdvanceRestClient I got this: So I tried looking more into directory structure of your WS and found there isn't any such URL you have mentioned as above. Further more, I got security issues...

Android: How to set the json data from Volley into the ListView?

Try to use the sample below. try { JSONObject jsonObject = new JSONObject(response.toString()); JSONArray js = jsonObject.names(); JSONArray val = jsonObject.toJSONArray(js); List ll = getListFromJsonArray(val); lv.setAdapter(new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, ll)); }catch(Exception e){ } ///custom method // method converts JSONArray to List of Maps protected static List<Map<String, String>> getListFromJsonArray(JSONArray jsonArray) { ArrayList<Map<String,...

loading json array with volley library

java,android,arrays,json,android-volley

you have initialized String[] names = { "amir", "imani" }; String[] imgURL = { "asdasd", "asd sad" }; it looks jsonArry.length() > 2 so what you need to do is change these to: String[] names = null; String[] imgURL = null; and in onResponse(): before the for loop names =...

How I send a JsonObject and recive a JsonArray

You can use the following method to get JsonArray as response. public JsonArrayRequest(int method, String url, JSONObject jsonRequest, Listener<JSONArray> listener, ErrorListener errorListener) { super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, errorListener); } Please refer this answer for more details....

how to send array of params using volley in android

android,json,android-volley,http-status-code-500

Use HashMap<String ,String> params=new HashMap<String, String>(7); for(int i=1;i<=7;i++) { params.put("params_"+i, arr[i]); } in CustomJobjectRequest class because currently you are using String type as value in Map in CustomJobjectRequest class but sending String[] type when create object of CustomJobjectRequest class. Edit: To send all values in single parameter to server use...

Unexpected response code 500 for POST method

The problem is below. final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest( Method.POST, act.getString(R.string.CommentForUserURL), null, new Response.Listener<JSONObject>() { ^^^^ It should be final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest( Method.POST, act.getString(R.string.CommentForUserURL), new JSONObject(params), new Response.Listener<JSONObject>() { ^^^^^^^^^^^^^^^^^^^^^^ Copy code from protected Map<String, String> getParams() before final JsonObjectRequest. That's it!!! Reason is as...

Picasso with new Target loads bitmap from second time

android,android-volley,retrofit,picasso

Alternatively, i achieved the requirement by placing a ImageView inside the Layout and i passed on my Layout width and height to scale my ImageView. Reason is getMeasuredWidth of my ImageView is always 0, where as my Layout gives me the measuredWidth and measuredHeight ( Parent of the ImageView) <RelativeLayout...

Volley-Lib -> String cannot be converted to JSONObject with a real JSONObject

java,android,image,bitmap,android-volley

I don't know why it's append but I got the same issue with volley with the same type of request (HTTP POST + HEADER + PARAMS) I fix it using StringRequest and parsing it manually. Try in this way StringRequest postRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() { @Override public...

Android: I am unable to download an image with the URL I have to use due to formatting issues

You can copy both into your browser and they work fine, but the first one cannot be read by my Android parsing The first URL is definitely malformed but the reason why it works in browsers is because they automatically convert backslashes to forward slashes and most web servers...

Null Object Reference Error: Android Studio using SQLite

android,sqlite,android-volley

This is very likely because you didn't register your AppController in the manifest so getInstance returns null.

Custom Volley Singleton throws NullPointerException?

Solved the problem. I added this android:name="<package>.CustomVolleySingleton2" android:allowBackup="true" on tag <application> in AndroidManifest. now works fine....

How do I upload large files (10MB) in Android?

java,android,android-studio,android-volley

Try this public String sendFileToServer(String filename, String targetUrl) { String response = "error"; Log.e("Image filename", filename); Log.e("url", targetUrl); HttpURLConnection connection = null; DataOutputStream outputStream = null; // DataInputStream inputStream = null; String pathToOurFile = filename; String urlServer = targetUrl; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary =...

Volley deliverResponse not being called

You should also look for errors in your Network Response and also notify Volley also rather than using Object, You also need to override parseNetworkError, deliverResponse methods. See my example (please don't be overwhelmed by so much boilerplate code) public interface JsonParser_<T> { public T parseResponse_(JSONObject json); public T parseResponse_(JSONArray...

Get Instagram Access Token with android volley

android,instagram,access-token,android-volley

Ive just actually implemented this myself. This is the code i used. public void requestAccessToken(final String code) { StringRequest request = new StringRequest(Request.Method.POST, TOKENURL, new Response.Listener<String>() { @Override public void onResponse(String response) { Log.e("Success Response = ", response); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Log.e("Error...

Using ListView volley image to another activity: java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException

android,android-listview,nullpointerexception,android-volley,runtimeexception

The answer is posted in the last comment of my post. Needed to change thumbNail back to thumbnail in the id of my .xml file.

android parse jsonObject with volley

android,json,gson,android-volley,http-get

Use Items instead of "" for getting Items JSONArray from response JSONObject: JSONArray mainjsonArray=response.getJSONArray("Items"); ...

How to perform loop with volley

android,android-volley,okhttp

The logic of this approach is not sound. You have made the assumption that the do-while loop checks the value of boolean1 after each web-service call completes. In reality, what happens is that even before the first web-service call has completed, the do-while loop has already moved on to the...

PATCH Verb in Android (OkHttp, Volley, Retrofit…)

Alright! Thanks @Adam and everyone who contributed to get me in the right direction. Really appreciate it. So, here's what I ended up doing (I barely customized what @Adam posted, which of course is the correct answer!): Firstly, I set up my UserUpdate class as follows: public class UserUpdate {...

Volley org.json.JSONException when parsing valid JSON

android,image,nullpointerexception,android-volley,loader

Is JSONArray not JSONObject. You can use (example with GSON and Volley): .... JsonArrayRequest myReq = new JsonArrayRequest( "http://api.devnews.today", createMyReqSuccessListener(), createMyReqErrorListener()){ }; queue.add(myReq); } }); } private Response.Listener<JSONArray> createMyReqSuccessListener() { return new Response.Listener<JSONArray>() { @Override public void onResponse(JSONArray response) { JSONArray array= null; try { array = response; for(int i=1;i...

How to use ImageLoader of Volley Library?

The problem is that you made imageLoader static, and you only initialise it in the VolleySingleton constructor, which is only called during getInstance(). Make the imageLoader non-static, and make the getImageLoader method also non-static, and replace your code to look like this: ImageLoader imageLoader = VolleySingleton.getInstance(context).getImageLoader() ...

Losing images from NetworkImageView after Scrolling list up-down

android,android-listview,android-volley,networkimageview

Try like this in else block else { thumbnail.setVisibility(View.VISIBLE);//add this thumbnail.setImageUrl(newsArticlesItems.get(postion).getThumbnailUrl(), imageLoader); } ...

Trying to call getApplicationContext() on instance of Application class leads to null object reference error

android,android-fragments,android-activity,android-volley,illegalstateexception

Please make sure you have declared your MyApplication class in manifest as android:name="packagename.MyApplication" in application tag

java.lang.IllegalStateException: Fragment not attached to Activity

This error happens due to the combined effect of two factors: The HTTP request, when complete, invokes either onResponse() or onError() (which work on the main thread) without knowing whether the Activity is still in the foreground or not. If the Activity is gone (the user navigated elsewhere), getActivity() returns...

Using custom Volley POST doesn't return anything

android,post,android-volley

user98239820 answer here was extreamly useful. Instead of extending JsonRequest<JSONArray> class he extended the Request class. I also had to change his new JSONObject to new JSONArray to fit my needs, but by pointing to that class works perfectly.

How often should an Android app and server sync

java,android,playframework,sync,android-volley

You should not sync whenever a fragment changes. It is a waste of the user's battery and data. You also most likely don't want to force a logout/login all that often as it becomes inconvenient for the user. If you are expecting very infrequent changes to the user profile, it...

JSON error: java.lang.String cannot be converted to JSONObject

php,android,json,gson,android-volley

Well my friends, I tried everything to solve the problem in Java code but I almost forgot to see what my PHP was receiving. In this part of my code: url = getString(R.string.urlBase)+getString(R.string.urlGetPOI)+"?ff_01="+String.format(getString(R.string.sqlSelectPOI), "1"); I was passing my SQL query as parameter. Well, the PHP wasn't receiving all query. For...

Android Volley Crashing

java,android,nullpointerexception,android-volley

This is no way to create a Activity object. A lot get go wrong like this. Activity is a context therefore he doesnt need to hold a context as a member. That is a common memory leak. The activity doesnt go trough the proper life cycle and that is...

Android Volley Converting ArrayList to CharSequence Returning Empty

android,json,arraylist,android-volley,charsequence

How can I get the nested AlertDialog to be populated with the data? Call addAll and notifyDataSetChanged for update AlertDialog data : @Override public void onResponse(JSONObject response) { // Parse the JSON: ... ListView list = openFriendsAlert.getListView(); ArrayAdapter adapter = (ArrayAdapter)list.getAdapter(); adapter.addAll(groupNameList); adapter.notifyDataSetChanged(); } ...

Android Json Parsing Using GSON

android,json,gson,android-volley

Your domain model is slightly off, you need to have a root object and set channel to be a list, since its an array in your json. Try this: import com.google.gson.Gson; import java.util.List; public class TestMe { public static void main(String[] args) { String jsonString = "paste your json here,...

Getting new token on retry before retrying old request with Volley

authentication,queue,token,android-volley,priority

Posting an answer now that I found a half-decent way to handle token refreshing on retry. When I create my general (most common) API call with Volley, I save a reference to the call in case it fails, and pass it to my retry policy. public GeneralAPICall(int method, String url,...

Picasso requests with respect to success and error count does not match

android,progress-bar,android-volley,picasso

Found the issue. The ListView ArrayAdapter gets called often. Hence updated the ListView with match_parent or fill_parent avoids calling the Picasso multiple times. This solved the infinitely running ProgressBar with Picasso issue as well. <ListView android:layout_width="match_parent" android:layout_height="match_parent" PS: Please voteup if you find this helpful.Thanks...

Passing volley image as the next activity background image

android,json,android-layout,android-volley

Here you go!! Inside MainActivity: listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // your code BitmapDrawable bd = (BitmapDrawable) ((NetworkImageView) view.findViewById(R.id.thumbnail)) .getDrawable(); Bitmap bitmap=bd.getBitmap(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); bd.getBitmap().compress(Bitmap.CompressFormat.PNG, 100, baos); byte[] imgByte = baos.toByteArray(); Intent intent = new...

How to use network frameworks (volley , okhttp , etc) in libgdx?

android,libgdx,android-volley,okhttp

Try to add this compile 'com.squareup.okhttp:okhttp:2.3.0' to your project build.gradle file for example project(":core") { apply plugin: "java" dependencies { ... compile 'com.squareup.okhttp:okhttp:2.3.0' } } Then you can use okhttp in your core project here is an example : public class OkhttpTest extends ApplicationAdapter { OkHttpClient client = new OkHttpClient();...

Volley String cannot be converted to JSONObject

java,android,arrays,json,android-volley

PostCatcher although allowing us to post requests, its response is basically a plain string "Created" and not in Json format. As such our client code is not able to ascertain it and throws error. One thing is even without ArrayList object that is with plain (String, String) K,V pair also...

Android Volley - Strange Error with HTTP code 401- java.io.IOException: No authentication challenges found

java,android,android-volley

I have do some research and come to conclusion that, this is a server issue, that did not follow the convention. From wiki: 401 Unauthorized (RFC 7235) Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided. The response...

Volley ExecutionException