issue #750 y #751 solved

android/Pictogram/commonlibrary/src/main/java/com/yottacode/net/SailsSocketsIO.java

@@ -2,25 +2,17 @@ package com.yottacode.net;
 
 import android.util.Log;
 
+import com.github.nkzawa.emitter.Emitter;
 import com.github.nkzawa.socketio.client.Ack;
 import com.github.nkzawa.socketio.client.IO;
 import com.github.nkzawa.socketio.client.Socket;
-import com.github.nkzawa.emitter.Emitter;
-
 
 import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.net.URISyntaxException;
-import java.security.KeyManagementException;
-import java.security.NoSuchAlgorithmException;
 
-
-import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLContext;
-import javax.net.ssl.TrustManager;
-
-import java.security.SecureRandom;
 
 
 /**
@@ -74,7 +66,14 @@ public class SailsSocketsIO {
         Log.d(this.getClass().getName(), " Listening:"+message);
         socket.on(message, listener);
     }
-
+    /**
+     * Unregisters a connection listener to a given message
+     * @param message
+     */
+    public void unregisterMessage(String message) {
+        Log.d(this.getClass().getName(), " Unlistening:"+message);
+        socket.off(message);
+    }
 
     public SailsSocketsIO(String sails_socket_io_url, String ptransport, Emitter.Listener connectListener, Emitter.Listener errorListener) {
 
@@ -114,11 +113,13 @@ public class SailsSocketsIO {
 
         JSONObject obj=new JSONObject().put("url", msg).put("data", params);
 
-        Log.d(this.getClass().getName(), "Emitted messsage:" + obj);
+        Log.i(this.getClass().getName(), "Emitted messsage:" + obj);
         socket.emit(this.EMIT_METHOD, obj, ack);
     }
       public void destroy() {
-          this.socket.disconnect();
-          this.socket.off();
+          if (this.socket.connected()) {
+              this.socket.off();
+              this.socket.disconnect();
+          }
       }
 }

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/net/NetService.java

@@ -113,14 +113,14 @@ public class NetService implements Runnable {
     public boolean online() {return updated;}
 
     public void restart_app(boolean direct_login) {
-      PCBcontext.unset_user();
       for (iNetServiceStatus listener: listeners)
         if (listener instanceof iNetServiceDevice) ((iNetServiceDevice)listener).restart_app(direct_login);
+        PCBcontext.unset_user();
     }
     public void restart_app(Intent intent, boolean direct_login) {
-        PCBcontext.unset_user();
         for (iNetServiceStatus listener: listeners)
             if (listener instanceof iNetServiceDevice) ((iNetServiceDevice)listener).restart_app(intent, direct_login);
+        PCBcontext.unset_user();
     }
 
     /**

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/net/websockets/Room.java

@@ -70,7 +70,6 @@ public class Room   {
     public void connect() {
         final String transport="polling";
         exit();
-
         this.socket=new SailsSocketsIO(PCBcontext.getRestapiWrapper().getServer(), transport, new Emitter.Listener() {
             @Override
             public void call(Object... args) {
@@ -83,6 +82,7 @@ public class Room   {
             @Override
             public void call(Object... args) {
                 Log.e(this.getClass().getName(), "IO sockects error: "+args[0]);
+                for (StackTraceElement element: Thread.currentThread().getStackTrace() )  Log.e(this.getClass().getName(), "IO sockect error detail: "+element.getClassName()+"."+element.getMethodName());
                 inRoom=false;
                 PCBcontext.getNetService().setOffline(new SocketIOException(args[0].toString()));
             }
@@ -108,9 +108,16 @@ public class Room   {
             Log.e(this.getClass().getCanonicalName(), "subscribe room failed:"+e.getMessage());
         }
     }
+    void unlisten() {
+        for (String msg: this.listeners.keySet()) {
+            Log.i(this.getClass().getName(), "Unlistening to "+msg);
+            this.socket.unregisterMessage(msg);
+        }
+    }
 
-  void unsubscribe() {
+    void unsubscribe() {
     try {
+
       UnsubscribeAction action = new UnsubscribeAction();
       this.emit(action);
     }catch (Exception e) {
@@ -120,13 +127,16 @@ public class Room   {
     public  void exit() {
       if (this.socket!=null)  {
         Log.i(this.getClass().getName(), "Leaving room");
+        unlisten();
         unsubscribe();
         this.socket.destroy();
         this.socket=null;
       }
     }
+
     public void finalize() throws java.lang.Throwable {
       super.finalize();
+      Log.i(this.getClass().getName(), "Discarding room");
       exit();
     }
 

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/net/websockets/StudentTalk.java

@@ -33,7 +33,7 @@ public  class StudentTalk implements  Emitter.Listener  {
 
     @Override
     public void call(Object... args) {
-
+        if (PCBcontext.getPcbdb()!=null)
         try {
             JSONObject msg = ((JSONObject) args[0]).getJSONObject("student");
             Log.i(this.getClass().getName(), "raw Received message " +msg.toString());

android/Pictogram/commonlibrary/src/main/java/com/yottacode/pictogram/tools/PCBcontext.java

@@ -45,8 +45,8 @@ public  final class PCBcontext {
             Log.i(PCBcontext.class.getCanonicalName(), "PCB context started. It's required" +
                     "set_user method call");
         } else {
-            Log.e(PCBcontext.class.getClass().getCanonicalName(), "Init method was previously" +
-                    "invoked! Please, check your code");
+            Log.e(PCBcontext.class.getCanonicalName(), "Init method was previously " +
+                    " invoked! Please, check your code");
         }
     }
 
@@ -75,7 +75,7 @@ public  final class PCBcontext {
             public void change(User updatedStudent) {
                          PCBcontext.getDevice().insertUser(updatedStudent);
                          if (updatedStudent.is_picto_size_big()!=getPcbdb().getCurrentUser().is_picto_size_big() || updatedStudent.has_categories()!=getPcbdb().getCurrentUser().has_categories())
-                             PCBcontext.getNetService().getNetServiceDevice().restart_app(true);
+                             PCBcontext.getNetService().restart_app(true);
                         else {
                              PCBcontext.getPcbdb().setCurrentUser(updatedStudent);
                              PCBcontext.getNetService().getNetServiceDevice().updateUserConfig(updatedStudent);
@@ -88,8 +88,8 @@ public  final class PCBcontext {
 
   public static void unset_user() {
     Log.i(PCBcontext.class.getCanonicalName(), "User unset. Student " + getPcbdb().getCurrentUser().get_name_stu());
-    pcbdb = null;
     if (room!=null)  room.exit();
+    pcbdb = null;
     room = null;
     vocabulary = null;
     getNetService().notifyStatus();

android/Pictogram/tabletlibrary/src/main/java/com/yottacode/pictogram/tabletlibrary/gui/LoginActivity.java

@@ -112,7 +112,7 @@ public  class LoginActivity extends FragmentActivity {
   @Override
   protected void onStop() {
     super.onStop();
-    Log.i(LOG_TAG,"Closing app");
+    Log.i(LOG_TAG,"Closing Login window");
     PCBcontext.getNetService().closeNotifyStatus();
   }
 }

android/Pictogram/tabletlibrary/src/main/java/com/yottacode/pictogram/tabletlibrary/gui/SerialActivity.java

@@ -131,8 +131,9 @@ public  class SerialActivity extends Activity   {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Log.e(this.getClass().getCanonicalName(),"Creating serial activity");
-        PCBcontext.init(this, new NetServiceTablet());
+        Log.i(this.getClass().getCanonicalName(),"Creating serial activity");
+        if (!PCBcontext.init())
+            PCBcontext.init(this, new NetServiceTablet());
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         setContentView(R.layout.activity_serial);
 
@@ -170,7 +171,7 @@ public  class SerialActivity extends Activity   {
         @Override
         public  void onStart() {
             Vector<User> users;
-            Log.e(this.getClass().getCanonicalName(),"Starting serial activity (direct login:"+getIntent().getBooleanExtra("resetPrevUser", true)+")");
+            Log.i(this.getClass().getCanonicalName(),"Starting serial activity (direct login:"+!getIntent().getBooleanExtra("resetPrevUser", true)+")");
             if (!PCBcontext.init()) PCBcontext.init(this, new NetServiceTablet());
             String default_user[] = loginUserPolicy();
             String username = default_user[0];

android/Pictogram/tabletlibrary/src/main/java/com/yottacode/pictogram/tabletlibrary/net/NetServiceTablet.java

@@ -83,6 +83,10 @@ public class NetServiceTablet implements NetService.iNetServiceDevice {
           serialActivity = new Intent(PCBcontext.getContext(), serialClass);
       }
       serialActivity.putExtra("resetPrevUser", !direct_login);
+      if (direct_login) {
+          serialActivity.putExtra("switch_usr",PCBcontext.getPcbdb().getCurrentUser().is_supervisor() ? PCBcontext.getPcbdb().getCurrentUser().get_email_sup() : PCBcontext.getPcbdb().getCurrentUser().get_nickname_stu());
+          serialActivity.putExtra("switch_pwd",PCBcontext.getPcbdb().getCurrentUser().is_supervisor() ? PCBcontext.getPcbdb().getCurrentUser().get_pwd_sup() : PCBcontext.getPcbdb().getCurrentUser().get_pwd_stu());
+      }
 
       PCBcontext.getContext().startActivity(serialActivity);
     }