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Java/Wordpress REST API - Keep user authenticated?

I'm using the below code on my main activity to log the user into my app. The app's backend is Wordpress. The server returns a success message, and the user is authenticated, but as soon as I get to the next screen/activity, and attempt to have the user create a post to wordpress, the server returns the message
"Sorry, you are not allowed to create posts as this user."
Especially odd in this case because the user credentials I'm using to login are the admin user.
Any idea how I can fix this?
LoginActivity (my user logs in successfully):
private class UserNetwork extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("username", "admin");
jsonObject.put("password", "123456");
} catch (JSONException e) {
e.printStackTrace();
}
OkHttpClient client = new OkHttpClient();
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
RequestBody body = RequestBody.create(JSON, jsonObject.toString());
Request request = new Request.Builder()
.url("http://myurl.com/wp-json/wp/v2/custom-plugin/login")
.post(body)
.build();
Response response = null;
try {
response = client.newCall(request).execute();
String resStr = response.body().string();
Log.i("The response is", String.valueOf(response));
int responseCode = response.code();
Log.i("Check response code", String.valueOf(responseCode));
if (responseCode == 200) {
Log.i("We're logged in!", String.valueOf(responseCode));
Intent i = new Intent(LoginActivity.this, DashboardActivity.class);
startActivity(i);
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
DashboardActivity (user attempts to create post, and 'Unauthorized' messsage is returned):
private class UserPosts extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("title", "Our first post");
jsonObject.put("content", "this is a test");
jsonObject.put("status", "publish");
} catch (JSONException e) {
e.printStackTrace();
}
OkHttpClient client = new OkHttpClient();
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
// put your json here
RequestBody body = RequestBody.create(JSON, jsonObject.toString());
Request request = new Request.Builder()
.url("http://myurl.com/wp-json/wp/v2/posts")
.post(body)
.build();
Response response = null;
try {
response = client.newCall(request).execute();
String resStr = response.body().string();
Log.i("The response is", String.valueOf(response));
int responseCode = response.code();
Log.i("Check response code", String.valueOf(responseCode));
if (responseCode == 200) {
Log.i("Creating post!", String.valueOf(responseCode));
} else {
Log.i("Post not created.", String.valueOf(responseCode));
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}

The problem you're having is caused by HTTP protocol being stateless.
That means whenever you perform request, server treats you as a new entity.
In case of most authenticated requests, the client is responsible for storing the tokens issued by the server during the login, and then passing them to following requests.
When you are using the browser it is the client and usually is being responsible for handling this state (it ma also be a JavaScript code running in the browser).
In your code that is your responsibility to store this state.
While you're using OkHttp, you could use CookieJar and it would probably work. However in the end using user credentials to authenticate application is not the best idea and using extension that would allow you to specify credentials for an application as #faozi suggested would probably be a better solution.

You need to install and activate the Application Passwords plugin and then follow the instructions given
here.
But you don’t need to actually set up any Application Passwords for your users.

you need to authenticate it first : here
you can add code in WordPress file to authenticate it

How to send HTTP request from android app to Heroku

I have a android app that uses the twilio sdk and is hosted by heroku server. I'm trying to push a button in my app to send a HTTP request to heroku to send a REST API request to Twilio to update my twiml URL. The current way i'm trying to send the the HTTP request is not working. I have looked through all of the examples that i could find and none of them show how to do this function. Does anybody know how to do this? Thanks in advance.
This is my code for trying to send the HTTP request to heroku
holdButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://yourappnamehere.herokuapp.com/hello");
try {
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
HttpEntity ht = response.getEntity();
BufferedHttpEntity buf = new BufferedHttpEntity(ht);
InputStream is = buf.getContent();
BufferedReader r = new BufferedReader(new InputStreamReader(is));
StringBuilder total = new StringBuilder();
String line;
while ((line = r.readLine()) != null) {
total.append(line);
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//setting a toast to see if this is being initiated
Toast.makeText(getBaseContext(), "why wont it work!", Toast.LENGTH_SHORT).show();
}
;
});
This is my updated code including the volley library
holdButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//setting up a request queue from Volley API
//RequestQueue mRequestQueue;
// Instantiate the cache
Cache cache = new DiskBasedCache(getCacheDir(), 1024 * 1024); // 1MB cap
// Set up the network to use HttpURLConnection as the HTTP client.
Network network = new BasicNetwork(new HurlStack());
// Instantiate the RequestQueue with the cache and network.
mRequestQueue = new RequestQueue(cache, network);
// Start the queue
mRequestQueue.start();
String url = "http://yourappnamehere.herokuapp.com/hello";
// Formulate the request and handle the response.
StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
// Do something with the response
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
// Handle error
}
});
// Add the request to the RequestQueue.
mRequestQueue.add(stringRequest);
Toast.makeText(getBaseContext(), "why wont it work!", Toast.LENGTH_SHORT).show();
}
;
});

I would suggest using a library like Google Volley which is pretty slick
https://developer.android.com/training/volley/index.html
HttpRequest is deprecated from API level 22. It would be best practice to avoid using that. Use java.net.HttpUrlConnection instead.
However, if you still want to use it, the above code needs to be run on a thread other than the UI thread as mentioned in the comment above.

Alternate for HttpClient in android?

My requirement is to upload the images to server using a Multipart request. I was able to create a Multipart Http Request using the HttpClient, which is deprecated. Is it possible to achieve the same using HttpUrlConnection? If yes, how?
Update:
Current code
{
ProgressDialog progress_dialog;
#Override
protected void onPreExecute() {
// setting progress bar to zero
progress_dialog=new ProgressDialog(CreateAlbum.this);
progress_dialog.setTitle("Loading..");
progress_dialog.show();
super.onPreExecute();
}
#Override
protected String doInBackground(Void... params) {
return uploadFile();
}
#SuppressWarnings("deprecation")
private String uploadFile() {
String responseString = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.1.42:8080/test/fileUpload.php");
try
{
MultipartEntityBuilder entity = MultipartEntityBuilder.create();
entity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
File sourceFile = new File(fileUri);
// Adding file data to http body
entity.addPart("image", new FileBody(sourceFile));
// Extra parameters if you want to pass to server
entity.addPart("website",
new StringBody("www.androidhive.info"));
entity.addPart("email", new StringBody("abc#gmail.com"));
httppost.setEntity(entity);
// Making server call
HttpResponse response = httpclient.execute(httppost);
HttpEntity r_entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
Log.i("RAE", "STATUS CODE IS"+statusCode);
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(r_entity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (ClientProtocolException e) {
responseString = e.toString();
} catch (IOException e) {
responseString = e.toString();
}
return responseString;
}
#Override
protected void onPostExecute(String result) {
Log.e("RAE", "Response from server: " + result);
progress_dialog.dismiss();
// showing the server response in an alert dialog
Toast.makeText(getApplicationContext(), "File Uploaded", Toast.LENGTH_SHORT).show();
super.onPostExecute(result);
}
}

AndroidHttpClient has been depreciated and has no longer support from the developers. So one will have to use java's own HttpURLConnection under java.net package. Here is a demo android application which implements HttpURLConnection. Just use the following git commands and run the application in android studio
Clone the git project :-
git clone https://github.com/viper-pranish/android-tutorial.git
Download the right version of project where HttpURLConnection is implemented
git checkout 399e3d1f9624353e522faf350f38a12db635c09a

EDIT
After you understand from my code how to make a POST with HttpUrlConnection, you can edit it and integrate the following answers: Sending files using POST with HttpURLConnection
This is how I make a form-encoded POST:
// Connection
URL url = new URL("http://www.example.com");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setDoOutput(true);
conn.setDoInput(true);
// Data to be sent
DataOutputStream out = new DataOutputStream(conn.getOutputStream());
out.writeBytes(printParams(params));
out.flush();
out.close();
// Print received response
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println(inputLine);
}
in.close();
where printParams is a simple function to trasform a Map into a string like a=b&c=d:
public static String printParams(Map<String, String> params) {
StringBuffer sb = new StringBuffer();
for (Map.Entry<String, String> e: params.entrySet()) {
if (sb.length() > 0) {
sb.append("&");
}
sb.append(e.getKey()).append('=').append(e.getValue());
}
return sb.toString();
}

This link has everything you need to send a file to server using multipart. It has been updated to use the most recent http classes in android. I have tested it and use it myself today. Cheers!
http://www.androidhive.info/2014/12/android-uploading-camera-image-video-to-server-with-progress-bar/

For the nexts post show your code, the programmers need see that for give more great help, thanks. On the one hand I always use in my apps httpClient and it's the best way for me because you can configuration a specific client with handling cookies, authentication, connection management, and other features, it's simple if you have the code. If you want to see more info from this theme you can visit this links, in Class Overview part:
http://developer.android.com/reference/org/apache/http/client/HttpClient.html
http://developer.android.com/reference/java/net/HttpURLConnection.html
On the other hand, if you want to do a multiple connections with your server I recommend a parallel programming with httpClient with processes and threads can read more info here: http://developer.android.com/guide/components/processes-and-threads.html
// Last Update //
Sorry Rahul Batra I work with API 21... I noted this for next version of my app. But as the first Step I will try to use a backgroud tasks with httpURLConnection.
This post have a really great information:
http://android-developers.blogspot.com.es/2011/09/androids-http-clients.html
I hope it help you this answer!! If you need more information or anything let me know, good luck Rahul Batra.

I need an alternative option to HttpClient in Android to send data to PHP as it is no longer supported

Currently I'm using HttpClient, HttpPost to send data to my PHP server from an Android app but all those methods were deprecated in API 22 and removed in API 23, so what are the alternative options to it?
I searched everywhere but I didn't find anything.

I've also encountered with this problem to solve that I've made my own class.
Which based on java.net, and supports up to android's API 24
please check it out:
HttpRequest.java
Using this class you can easily:
Send Http GET request
Send Http POST request
Send Http PUT request
Send Http DELETE
Send request without extra data params & check response HTTP status code
Add custom HTTP Headers to request (using varargs)
Add data params as String query to request
Add data params as HashMap {key=value}
Accept Response as String
Accept Response as JSONObject
Accept response as byte [] Array of bytes (useful for files)
and any combination of those - just with one single line of code)
Here are a few examples:
//Consider next request:
HttpRequest req=new HttpRequest("http://host:port/path");
Example 1:
//prepare Http Post request and send to "http://host:port/path" with data params name=Bubu and age=29, return true - if worked
req.prepare(HttpRequest.Method.POST).withData("name=Bubu&age=29").send();
Example 2:
// prepare http get request, send to "http://host:port/path" and read server's response as String
req.prepare().sendAndReadString();
Example 3:
// prepare Http Post request and send to "http://host:port/path" with data params name=Bubu and age=29 and read server's response as JSONObject
HashMap<String, String>params=new HashMap<>();
params.put("name", "Groot");
params.put("age", "29");
req.prepare(HttpRequest.Method.POST).withData(params).sendAndReadJSON();
Example 4:
//send Http Post request to "http://url.com/b.c" in background using AsyncTask
new AsyncTask<Void, Void, String>(){
protected String doInBackground(Void[] params) {
String response="";
try {
response=new HttpRequest("http://url.com/b.c").prepare(HttpRequest.Method.POST).sendAndReadString();
} catch (Exception e) {
response=e.getMessage();
}
return response;
}
protected void onPostExecute(String result) {
//do something with response
}
}.execute();
Example 5:
//Send Http PUT request to: "http://some.url" with request header:
String json="{\"name\":\"Deadpool\",\"age\":40}";//JSON that we need to send
String url="http://some.url";//URL address where we need to send it
HttpRequest req=new HttpRequest(url);//HttpRequest to url: "http://some.url"
req.withHeaders("Content-Type: application/json");//add request header: "Content-Type: application/json"
req.prepare(HttpRequest.Method.PUT);//Set HttpRequest method as PUT
req.withData(json);//Add json data to request body
JSONObject res=req.sendAndReadJSON();//Accept response as JSONObject
Example 6:
//Equivalent to previous example, but in a shorter way (using methods chaining):
String json="{\"name\":\"Deadpool\",\"age\":40}";//JSON that we need to send
String url="http://some.url";//URL address where we need to send it
//Shortcut for example 5 complex request sending & reading response in one (chained) line
JSONObject res=new HttpRequest(url).withHeaders("Content-Type: application/json").prepare(HttpRequest.Method.PUT).withData(json).sendAndReadJSON();
Example 7:
//Downloading file
byte [] file = new HttpRequest("http://some.file.url").prepare().sendAndReadBytes();
FileOutputStream fos = new FileOutputStream("smile.png");
fos.write(file);
fos.close();

The HttpClient was deprecated and now removed:
org.apache.http.client.HttpClient:
This interface was deprecated in API level 22.
Please use openConnection() instead. Please visit this webpage for further details.
means that you should switch to java.net.URL.openConnection().
See also the new HttpURLConnection documentation.
Here's how you could do it:
URL url = new URL("http://some-server");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
// read the response
System.out.println("Response Code: " + conn.getResponseCode());
InputStream in = new BufferedInputStream(conn.getInputStream());
String response = org.apache.commons.io.IOUtils.toString(in, "UTF-8");
System.out.println(response);
IOUtils documentation: Apache Commons IO
IOUtils Maven dependency: http://search.maven.org/#artifactdetails|org.apache.commons|commons-io|1.3.2|jar

The following code is in an AsyncTask:
In my background process:
String POST_PARAMS = "param1=" + params[0] + "&param2=" + params[1];
URL obj = null;
HttpURLConnection con = null;
try {
obj = new URL(Config.YOUR_SERVER_URL);
con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("POST");
// For POST only - BEGIN
con.setDoOutput(true);
OutputStream os = con.getOutputStream();
os.write(POST_PARAMS.getBytes());
os.flush();
os.close();
// For POST only - END
int responseCode = con.getResponseCode();
Log.i(TAG, "POST Response Code :: " + responseCode);
if (responseCode == HttpURLConnection.HTTP_OK) { //success
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// print result
Log.i(TAG, response.toString());
} else {
Log.i(TAG, "POST request did not work.");
}
} catch (IOException e) {
e.printStackTrace();
}
Reference:
http://www.journaldev.com/7148/java-httpurlconnection-example-to-send-http-getpost-requests

This is the solution that I have applied to the problem that httpclient deprecated in this version of android 22`
public static final String USER_AGENT = "Mozilla/5.0";
public static String sendPost(String _url,Map<String,String> parameter) {
StringBuilder params=new StringBuilder("");
String result="";
try {
for(String s:parameter.keySet()){
params.append("&"+s+"=");
params.append(URLEncoder.encode(parameter.get(s),"UTF-8"));
}
String url =_url;
URL obj = new URL(_url);
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", USER_AGENT);
con.setRequestProperty("Accept-Language", "UTF-8");
con.setDoOutput(true);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(con.getOutputStream());
outputStreamWriter.write(params.toString());
outputStreamWriter.flush();
int responseCode = con.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + params);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine + "\n");
}
in.close();
result = response.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}finally {
return result;
}
}

You are free to continue using HttpClient. Google deprecated only their own version of Apache's components. You can install fresh, powerful and non deprecated version of Apache's HttpClient like I described in this post: https://stackoverflow.com/a/37623038/1727132

if targeted for API 22 and older, then should add the following line into build.gradle
dependencies {
compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1'
}
if targeted for API 23 and later, then should add the following line into build.gradle
dependencies {
compile group: 'cz.msebera.android' , name: 'httpclient', version: '4.4.1.1'
}
If still want to use httpclient library, in Android Marshmallow (sdk 23), you can add:
useLibrary 'org.apache.http.legacy'
to build.gradle in the android {} section as a workaround. This seems to be necessary for some of Google's own gms libraries!

Which client is best?
Apache HTTP client has fewer bugs on Eclair and Froyo. It is the best
choice for these releases.
For Gingerbread and better, HttpURLConnection is the best choice. Its
simple API and small size makes it great fit for Android...
Reference here for more info (Android developers blog)

You can use my easy to use custom class.
Just create an object of the abstract class(Anonymous) and define onsuccess() and onfail() method.
https://github.com/creativo123/POSTConnection

i had similar issues in using HttpClent and HttpPost method since i didn't wanted change my code so i found alternate option in build.gradle(module) file by removing 'rc3' from buildToolsVersion "23.0.1 rc3" and it worked for me. Hope that Helps.

Accessing a login api using http get method in android

I am developing an android app which uses a login api, which will allow its web users to login with their same credentials on the android device.....
the url for the api is
https://api.ecoachsolutions.com/main.php?ecoachsignin=1&server=remote&user=ecoachguest&pass=ecoachguest
which retuns a response in json
JSON object: {
status: <success or error>,
msg: <response message>,
profile: <user profile object>
}
I tried this code which I found searching on the internet but it isn't working,
private void doLogin(View view) {
//ALERT MESSAGE
_spinner.setVisibility(View.VISIBLE);
Toast.makeText(mContext, "connecting to server.... ",
Toast.LENGTH_SHORT).show();
// URLEncode user defined data
String usernameValue = username.getText().toString();
String passValue = password.getText().toString();
// Create http cliient object to send request to server
HttpClient Client = new DefaultHttpClient();
// Create URL string
String URL = "https://api.ecoachsolutions.com/main.php?ecoachsignin=1&server=remote&user="+usernameValue+"&pass="+passValue;
Log.i("httpget", URL);
try
{
String SetServerString ;
// Create Request to server and get response
HttpGet httpget = new HttpGet(URL);
ResponseHandler<String> responseHandler = new BasicResponseHandler();
SetServerString = Client.execute(httpget, responseHandler);
System.out.println(usernameValue);
System.out.println(passValue);
// Show response on activity
Toast.makeText(getBaseContext(),SetServerString,Toast.LENGTH_LONG).show();
}
catch(Exception ex)
{
Toast.makeText(getBaseContext(),"Fail",Toast.LENGTH_LONG).show();
_spinner.setVisibility(View.INVISIBLE);
}
}
will appreciate the help or the positive direction thanks :)

Change your code to get the HttpResponse like below,
String responseBody = "";
HttpResponse response = client.execute(post);
int responseCode = response.getStatusLine().getStatusCode();
Log.i("GET Response Code ",responseCode + "");
switch(responseCode) {
// Means server is responding
case 200:
HttpEntity entity = response.getEntity();
if(entity != null) {
responseBody = EntityUtils.toString(entity);
// Now you can try printing your returned string here, before you go for JSON parsing
}
break;
// Add more case statements to handle other scenarios
}
The code is simple, but if still unable to understand, don't hesitate to ask.