Added stop for tracking new messages when chat activity closed

app/src/main/java/io/github/chronosx88/influence/contracts/chatactivity/IChatLogicContract.java

@@ -4,4 +4,5 @@ import io.github.chronosx88.influence.models.roomEntities.MessageEntity;
 
 public interface IChatLogicContract {
     void sendMessage(MessageEntity message);
+    void stopTrackingForNewMsgs();
 }

app/src/main/java/io/github/chronosx88/influence/contracts/chatactivity/IChatPresenterContract.java

@@ -3,4 +3,5 @@ package io.github.chronosx88.influence.contracts.chatactivity;
 public interface IChatPresenterContract {
     void sendMessage(String text);
     void updateAdapter();
+    void onDestroy();
 }

app/src/main/java/io/github/chronosx88/influence/logic/ChatLogic.java

@@ -34,6 +34,7 @@ public class ChatLogic implements IChatLogicContract {
     private ChatEntity chatEntity;
     private Thread checkNewMessagesThread = null;
     private KeyPairManager keyPairManager;
+    private Timer timer;
 
     public ChatLogic(ChatEntity chatEntity) {
         this.chatEntity = chatEntity;
@@ -44,7 +45,7 @@ public class ChatLogic implements IChatLogicContract {
                 checkForNewMessages();
             }
         };
-        Timer timer = new Timer();
+        this.timer = new Timer();
         timer.schedule(timerTask, 1, 1000);
         this.keyPairManager = new KeyPairManager();
     }
@@ -167,4 +168,10 @@ public class ChatLogic implements IChatLogicContract {
         JsonObject jsonObject = new JsonParser().parse(json).getAsJsonObject();
         return jsonObject.get("action").getAsInt();
     }
+
+    @Override
+    public void stopTrackingForNewMsgs() {
+        timer.cancel();
+        timer.purge();
+    }
 }

app/src/main/java/io/github/chronosx88/influence/presenters/ChatPresenter.java

@@ -58,4 +58,9 @@ public class ChatPresenter implements IChatPresenterContract, IObserver {
         List<MessageEntity> entities = LocalDBWrapper.getMessagesByChatID(chatID);
         view.updateMessageList(entities == null ? new ArrayList<>() : entities);
     }
+
+    @Override
+    public void onDestroy() {
+        logic.stopTrackingForNewMsgs();
+    }
 }

app/src/main/java/io/github/chronosx88/influence/views/ChatActivity.java

@@ -86,4 +86,10 @@ public class ChatActivity extends AppCompatActivity implements IChatViewContract
         }
         return super.onOptionsItemSelected(item);
     }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        presenter.onDestroy();
+    }
 }