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FirebaseMessagingService is not getting called in AsyncTask's doInBackground

I have push Notification and I want to update realm objects when the phone gets a notification but when I try launch this:
RealmModelActiveUser actUser= realm.where(RealmModelActiveUser.class).equalTo("id",1).findFirst();
int myid= actUser.getUser().getUser_id();
new ServerBackgroundDownloadConversations(getApplicationContext()) {
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (!result.equals("Error")) {
Log.i("Conversation", "UPDATED");
}
}
}.execute(myid);
The program jumps into the constructor ServerBackgroundDownloadConversations(getApplicationContext()) but doesn't call doInBackground and I don't know why.
My AsyncTask:
public class ServerBackgroundCreateConversation extends AsyncTask<RealmModelConversations,Void,String> {
Context context;
Handler handler;
String out= "";
#SuppressLint("HandlerLeak")
public ServerBackgroundCreateConversation(Context context) {
this.context = context;
handler = new Handler() {
#Override
public void handleMessage(Message msg) {
Bundle bundle= msg.getData();
if (bundle!=null){
out = (String) bundle.get("response");
} else {
out= "Error";
}
}
};
}
#Override
protected String doInBackground(RealmModelConversations... params) {
RealmModelConversations newConv = params[0];
UploadImageApacheHttp uploadTask = new UploadImageApacheHttp();
uploadTask.doFileUpload(newConv.getWork(newConv.getIntWork()), newConv, handler);
while (out.equals("")){
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
return out;
}
#Override
protected void onPreExecute() {
}
#Override
protected void onPostExecute(String result) {
if (!result.equals("]") || !result.equals("")){
/// prihlási nového user aj do active (login/register)
CreateNewConversation(result);
} else {
result="Error";
}
}
#Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
private void CreateNewConversation(String result){
Realm realm= Realm.getDefaultInstance();
try {
Gson gson = new Gson();
Type typeConv = new TypeToken<JsonSablonaConversations>() {
}.getType();
JSONObject pom;
JSONArray parentArray = new JSONArray(result);
JSONObject finalObject = parentArray.getJSONObject(0);
JsonSablonaConversations conversation = gson.fromJson(finalObject.toString(), typeConv);
final RealmModelConversations NewUserConv = new RealmModelConversations();
NewUserConv.setId_dialog(conversation.getId_dialog());
NewUserConv.setDate(conversation.getDate());
NewUserConv.setKey(conversation.getKey());
NewUserConv.setId_user(conversation.getId_user());
NewUserConv.setId_user2(conversation.getId_user2());
NewUserConv.setMeno(conversation.getMeno());
NewUserConv.setMeno2(conversation.getMeno2());
realm.executeTransaction(new Realm.Transaction() {
#Override
public void execute(Realm realm) {
try {
realm.copyToRealmOrUpdate(NewUserConv);
} catch (Exception e) {
int pom=4;
}
RealmResults<RealmModelConversations> ru= realm.where(RealmModelConversations.class).findAll();
}
});
}
catch (Exception e) {
int ppp=4;
ppp++;
}finally {
realm.close();
}
}
}
I try calling this ↑ from an external thread which is called from a Service, but my AsyncTask has handler and handler needs to be in runOnUIthread and in Thread. I can't get Activity because the thread is called from a Service which doesn't have access to Activity.

I solved my problem with this code
public String postData(int myUserId) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.gallopshop.eu/OFY/getConversations.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("id", Integer.toString(myUserId)));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
String responseStr = EntityUtils.toString(response.getEntity());
return responseStr;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
return null;
}
I will try to put this method & after this method into simply thread, But maybe it's not needed because it's in a service.
Question - Do I put this into Thread or do you think it'll affect the performance of the app?

Android multi threading UI update

I'm trying to run a UDP connection with external equipment. I want it to send a message to the equipment every 3 second and read the response.
I created 3 classes: main, sender and receive.
I open a Runnable for both sender and receive and let them sleep for 3 seconds before continue.
My problem is, when i push the button on the screen, the messages are send and received, however they are not updated on my screen because the update line is not in a loop. How do i tell it to update the screen every 3 second? the code for reading the message and show it, is this:
textViewState.setText(udpReceive.receivedMessage);
Code
public class MainActivity extends AppCompatActivity {
public static TextView textViewState;
public static Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textViewState = (TextView) findViewById(R.id.textView);
context = getApplicationContext();
}
public void buttonConnect(View v) {
(new Thread(new udpSender())).start();
(new Thread(new udpReceive())).start();
textViewState.setText(udpReceive.receivedMessage);
}
}
Class to send a message:
public class udpSender implements Runnable {
public void run() {
while (true) {
String messageStr = "Hello Android!";
int server_port = 8888;
DatagramSocket s = null;
try {
s = new DatagramSocket();
} catch (SocketException e) {
e.printStackTrace();
}
InetAddress local = null;
try {
local = InetAddress.getByName("192.168.43.159");
} catch (UnknownHostException e) {
e.printStackTrace();
}
int msg_length = messageStr.length();
byte[] message = messageStr.getBytes();
DatagramPacket p = new DatagramPacket(message, msg_length, local, server_port);
try {
s.send(p);
} catch (IOException e) {
e.printStackTrace();
}
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
Class to receive message from udp
public class udpReceive implements Runnable {
private static final int MAX_UDP_DATAGRAM_LEN = 100;
private static final int UDP_SERVER_PORT = 8888;
public static String receivedMessage;
public void run() {
while (true) {
String message;
byte[] lmessage = null;
lmessage = new byte[MAX_UDP_DATAGRAM_LEN];
DatagramPacket packet = null;
DatagramSocket socket = null;
try {
packet = new DatagramPacket(lmessage, lmessage.length);
socket = new DatagramSocket(UDP_SERVER_PORT);
socket.receive(packet);
message = new String(lmessage, 0, packet.getLength());
receivedMessage = message;
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (socket != null) {
socket.close();
}
}
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

In any class that is in another thread, try doing this
Handler handler = new Handler(getActivity().getMainLooper());
handler.post(new Runnable(){
// your TextView goes here
})

Only the UI thread (main thread) can access UI elements
// Your message receiving class
...
message = new String(lmessage, 0, packet.getLength());
final String message_received = new String(lmessage, 0, packet.getLength());
...
MainActivity.context.runOnUiThread(new Runnable() {
#Override
public void run() {
MainActivity.textViewState.setText(message_received);
}
});
...

I found a solution based on both of your answers :) Thank you
MainActivity class:
public static Handler UIHandler;
static {
UIHandler = new Handler(Looper.getMainLooper());
}
public static void runOnUI(Runnable runnable) {
UIHandler.post(runnable);
}
receive class
MainActivity.runOnUI(new Runnable() {
public void run() {
MainActivity.textViewState.setText(message_received);
}
});

Android: Start thread, join it and interrupt doesn't work well

I have a problem and I can't find the solution on the internet. I saw a lot of examples but no one really answered to my problem.
I have a login page and then, after checked if the both fields (login/pass) are filled, try to connect by another thread.
public class LoginActivity extends AppCompatActivity {
private EditText login = null;
private EditText password = null;
private RadioButton radioButton = null;
private Button button = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
login = (EditText)findViewById(R.id.loginEditText);
password = (EditText)findViewById(R.id.passwordEditText);
radioButton = (RadioButton)findViewById(R.id.saveRadioButton);
button = (Button)findViewById(R.id.ConnectionButton);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (login.getText().toString().equals("")
|| password.getText().toString().equals("")) {
alert(getString(R.string.alertDialoguErrorTitle), getString(R.string.UnfilledFieldLogin));
} else {
boolean haveToSave = radioButton.isChecked();
User user = User.getUser(login.getText().toString(), password.getText().toString());
try {
Intranet.login.start();
Intranet.login.join();
Intranet.login.interrupt();
Intranet.login.join();
} catch (InterruptedException e) {
alert(getString(R.string.alertDialoguErrorTitle), e.toString());
login.setText("");
password.setText("");
} finally {
if (!user._token.equals("")) {
if (haveToSave) {
// SAVE DATA
}
finish();
} else {
login.setText("");
password.setText("");
alert(getString(R.string.alertDialoguErrorTitle), getString(R.string.badLoginPassword));
}
}
}
}
});
}
public void alert(String title, String message) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(LoginActivity.this);
alertDialog.setTitle(title);
alertDialog.setMessage(message);
alertDialog.setPositiveButton("Close",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// nothing
}
});
alertDialog.show();
}
}
// The class using on the other thread
public class Intranet {
public static int responseCode = 0;
public static String responseString = "";
public static Thread login = new Thread(new Runnable() {
private OkHttpClient client = new OkHttpClient();
private String url = "https://epitech-api.herokuapp.com/login";
private User user = User.getUser();
public void run() {
try {
// Build the request
RequestBody formBody = new FormEncodingBuilder()
.add("login", user._login)
.add("password", user._password)
.build();
Request request = new Request.Builder()
.url(url)
.post(formBody)
.build();
Response responses = null;
// Reset the response code
responseCode = 0;
// Make the request
responses = client.newCall(request).execute();
if ((responseCode = responses.code()) == 200) {
// Get response
String jsonData = responses.body().string();
// Transform reponse to JSon Object
JSONObject json = new JSONObject(jsonData);
// Use the JSon Object
user._token = json.getString("token");
}
} catch (IOException e) {
responseString = e.toString();
} catch (JSONException e) {
responseString = e.toString();
}
;
}
});
}
I tried a lot of solutions with join() which wait the end of the thread. But finally, all time at the second time, when I try to connect myself, an exception comes up (The thread is already started). So how can this thread still running if it's interrupted before continuing?

Start AsyncTask inside of a Thread [duplicate]

This question already has answers here:
Start Async Task within a worker thread
(5 answers)
Closed 8 years ago.
I want to start a simple process of getting the HTML code of a webpage from inside an AsyncTask, because when it's from the new Thread the UI freezes for few moments, how can I do it?
public void loadHTML(View vL) {
final String ss = (et.getText().toString());
new Thread(new Runnable() {
#Override
public void run() {
try {
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(new HttpGet(ss));
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
final String responseString = out.toString();
tvW.post(new Runnable() {
#Override
public void run() {
tvW.setText(responseString);
}
});
Log.v("DYRA BYRA", responseString);
} else {
response.getEntity().getContent().close();
}
} catch (Exception e) {
}
}
}).start();
}
I want this part tvW.post(new Runnable() {
#Override
public void run() {
tvW.setText(responseString);
}
});
to be in AsyncTask

Uh i don't think you need an asynctask but a run on ui thread
activity.runOnUiThread(new Runnable() {
#Override
public void run() {
tvW.setText(responseString);
}
});

You have to sync your Thread with the UI-Thread. Because all UI relevant operations like writing to an TextView have to be done on the UI-Thread. Therefor you should use the Handler class.
Handler myHandler = new Handler();
Now replace this code:
tvW.post(new Runnable() {
#Override
public void run() {
tvW.setText(responseString);
}
});
With this one:
myHandler.post(new Runnable() {
#Override
public void run() {
tvW.setText(responseString);
}
});
Note that your Handler class have to be declared on the UI-Thread to get connected.

That's what I wanted to do
public void loadHTML(View vL) {
new getCode().execute();
}
private class getCode extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
final String ss = (et.getText().toString());
try {
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(new HttpGet(ss));
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
responseString = out.toString();
Log.v("DYRA BYRA", responseString);
} else {
response.getEntity().getContent().close();
}
} catch (Exception e) {
}
return null;
}
protected void onPostExecute(String result) {
tvW.setText(responseString);
}
}
the UI still freezes for like half second, but perhaps that's because the received HTML is extremely long

Put webpage text into a textview (Android)

I want to put a text from a webpage to a textview on Android 3.0. I have this code:
public class Biografie extends Activity {
private TextView outtext;
private String HTML;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_biografie);
outtext= (TextView) findViewById(R.id.textview1);
try {
getHTML();
} catch (Exception e) {
e.printStackTrace();
}
outtext.setText("" + HTML);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.biografie, menu);
return true;
}
private void getHTML() throws ClientProtocolException, IOException
{
HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpGet httpGet = new HttpGet("http://artistone.appone.nl/api/biografie.php?dataid=998"); //URL!
HttpResponse response = httpClient.execute(httpGet, localContext);
String result = "";
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String line = null;
while ((line = reader.readLine()) != null) {
result += line + "\n";
HTML = result;
}
}
}
My TextView returns "null" instead of the text from the page. Please help me to fix this. Thanks in regard.

Change your code to:
while ((line = reader.readLine()) != null) {
result += line + "\n";
}
HTML = result;
and try this:
outtext.setText(Html.fromHtml(HTML));
And instead of performing network action in main thread i will suggest you to do this in separate thread using AsyncTask

The problem is that you are getting NetworkOnMainThreadException
That is because you are downloading network content on the Main Thread (Activity's Thread).
Instead you need to use a background thread to download that content, or use AsynchTask.
A simple code that should fix this issue:
final Handler handler = new Handler();
Thread thread = new Thread() {
public void run() {
try {
getHTML();
handler.post(new Runnable() {
#Override
public void run() {
outtext.setText("" + HTML);
}
});
} catch (Exception e) {
e.printStackTrace();
handler.post(new Runnable() {
#Override
public void run() {
outtext.setText(e.toString());
}
}
}
};
thread.start(); // I forgot to start the thread. sorry !
Instead of :
try {
getHTML();
} catch (Exception e) {
e.printStackTrace();
}
outtext.setText("" + HTML);
Also take a look at this tutorial about android threads : Tutorial