Refactor code.

ui/src/main/java/com/wireguard/android/activity/LoginActivity.java

@@ -48,7 +48,7 @@ public class LoginActivity extends BaseActivityBubble {
             @Override public void onClick(final View v) {
                 final String url = BASE_URL_PREFIX + bubbleName.getText().toString() + BASE_URL_SUFFIX;
                 if(url.split(SEPARATOR).length!=3){
-                    Toast.makeText(LoginActivity.this,"Hostname not valid",Toast.LENGTH_LONG).show();
+                    Toast.makeText(LoginActivity.this,getResources().getText(R.string.hostname_not_valid),Toast.LENGTH_LONG).show();
                     return;
                 }
                 if(DataRepository.getRepositoryInstance()==null) {
@@ -58,10 +58,10 @@ public class LoginActivity extends BaseActivityBubble {
                     loginViewModel.buildClientService(url);
                 }
                 loginViewModel.setUserURL(LoginActivity.this,url);
-                final String username = userName.getText().toString().trim();
-                final String password = LoginActivity.this.password.getText().toString().trim();
+                final String usernameInput = userName.getText().toString().trim();
+                final String passwordInput = password.getText().toString().trim();
                 showLoadingDialog();
-                login(username, password);
+                login(usernameInput, passwordInput);
             }
         });
     }

ui/src/main/java/com/wireguard/android/repository/DataRepository.java

@@ -317,9 +317,6 @@ public class DataRepository {
         return config;
     }
 
-    public TunnelManager getTunnelManager() {
-        return tunnelManager;
-    }
 
     public ObservableTunnel createTunnel(final Context context, final boolean stateTunnel){
         //TODO implement config is null case

ui/src/main/java/com/wireguard/android/viewmodel/MainViewModel.java

@@ -20,10 +20,6 @@ public class MainViewModel extends ViewModel {
         return DataRepository.getRepositoryInstance().getTunnel(context,stateTunnel);
     }
 
-    public TunnelManager getTunnelManager() {
-        return DataRepository.getRepositoryInstance().getTunnelManager();
-    }
-
     public void buildRepositoryInstance(Context context, String url){
         DataRepository.buildRepositoryInstance(context,url);
     }

ui/src/main/res/values/strings.xml

@@ -246,4 +246,5 @@
     <string name="connected_bubble">Connected</string>
     <string name="failed_bubble">Failed</string>
     <string name="disconnect">Disconnect</string>
+    <string name="hostname_not_valid">Hostname not valid</string>
 </resources>