app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
 
-        <activity android:name=".LoginActivity"></activity>
+        <activity android:name=".view.LoginActivity"></activity>
 
         <activity
             android:name=".view.BoardsListsActivity"

app/src/main/java/it/unisannio/ding/ids/wedroid/app/view/BoardsListsActivity.kt

@@ -1,6 +1,8 @@
 package it.unisannio.ding.ids.wedroid.app.view
 
+import android.content.Intent
 import android.os.Bundle
+import android.util.Log
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
@@ -8,6 +10,8 @@ import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import it.unisannio.ding.ids.wedroid.app.R
+import it.unisannio.ding.ids.wedroid.app.util.PreferenceReader
+import it.unisannio.ding.ids.wedroid.app.util.SharedPreferenceHelper
 import it.unisannio.ding.ids.wedroid.app.view.adapter.BoardsListAdapter
 import it.unisannio.ding.ids.wedroid.app.viewmodel.BoardsListViewModel
 
@@ -21,6 +25,17 @@ class BoardsListsActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_boards_lists)
         setSupportActionBar(toolbar)
+
+        val reader: PreferenceReader = SharedPreferenceHelper(this)
+        if (reader.token == "")
+            startActivityForResult(
+                Intent(this, LoginActivity::class.java),
+                LoginActivity.LOGIN_REQUEST_CODE
+            )
+        else initializeUi()
+    }
+
+    private fun initializeUi() {
         viewModel = ViewModelProvider(this).get(BoardsListViewModel::class.java)
 
         val adapter = BoardsListAdapter(this)
@@ -43,7 +58,6 @@ class BoardsListsActivity : AppCompatActivity() {
         pullToRefresh.setOnRefreshListener {
             viewModel.refresh()
         }
-
     }
 
     private fun swipeLeftToDelete() {
@@ -67,5 +81,19 @@ class BoardsListsActivity : AppCompatActivity() {
 
         swipeToDelete.attachToRecyclerView(boardList)
     }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        when (requestCode) {
+            LoginActivity.LOGIN_REQUEST_CODE -> {
+                when (resultCode) {
+                    LoginActivity.LOGIN_ERROR -> finish()
+                    LoginActivity.LOGIN_OK -> initializeUi()
+                    else -> finish()
+                }
+            }
+            else -> finish()
+        }
+    }
 }
 

app/src/main/java/it/unisannio/ding/ids/wedroid/app/view/LoginActivity.kt

@@ -1,12 +1,11 @@
-package it.unisannio.ding.ids.wedroid.app
+package it.unisannio.ding.ids.wedroid.app.view
 
-import android.content.Context
-import android.content.SharedPreferences
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
 import android.util.Log
 import android.view.View
 import android.widget.Toast
+import it.unisannio.ding.ids.wedroid.app.R
 import it.unisannio.ding.ids.wedroid.app.util.SharedPreferenceHelper
 import it.unisannio.ding.ids.wedroid.wrapper.api.LoginService
 import it.unisannio.ding.ids.wedroid.wrapper.entity.UserPrototype
@@ -25,10 +24,11 @@ class LoginActivity : AppCompatActivity() {
         setContentView(R.layout.activity_login)
         sph = SharedPreferenceHelper(this)
 
+        setResult(LOGIN_ERROR)
+
         val id = sph.userId
         val token = sph.token
         val url = sph.baseUrl
-        Log.d("sharedPreference", "userId: $id\n token: $token\n url: $url")
     }
 
     fun loginButton(v: View) {
@@ -80,8 +80,16 @@ class LoginActivity : AppCompatActivity() {
                     Toast.LENGTH_LONG
                 ).show()
 
+                setResult(LOGIN_OK)
+                finish()
             }
 
         })
     }
+
+    companion object {
+        const val LOGIN_REQUEST_CODE = 13
+        const val LOGIN_OK = 0
+        const val LOGIN_ERROR = 1
+    }
 }

app/src/main/java/it/unisannio/ding/ids/wedroid/app/viewmodel/BoardsListViewModel.java

@@ -3,6 +3,7 @@ package it.unisannio.ding.ids.wedroid.app.viewmodel;
 import android.app.Application;
 
 import androidx.annotation.NonNull;
+import androidx.core.app.SharedElementCallback;
 import androidx.lifecycle.AndroidViewModel;
 import androidx.lifecycle.LiveData;
 
@@ -13,6 +14,7 @@ import it.unisannio.ding.ids.wedroid.app.data.entity.Board;
 import it.unisannio.ding.ids.wedroid.app.data.repository.BoardRepository;
 import it.unisannio.ding.ids.wedroid.app.util.PreferenceReader;
 import it.unisannio.ding.ids.wedroid.app.util.ServicesFactory;
+import it.unisannio.ding.ids.wedroid.app.util.SharedPreferenceHelper;
 
 public class BoardsListViewModel extends AndroidViewModel {
     private BoardRepository repository;
@@ -20,7 +22,7 @@ public class BoardsListViewModel extends AndroidViewModel {
 
     public BoardsListViewModel(@NonNull Application application) {
         super(application);
-        PreferenceReader reader = null; //TODO
+        PreferenceReader reader = new SharedPreferenceHelper(application);
         repository = new BoardRepository(
                 BoardDatabase.getDatabase(application).boardDao(),
                 ServicesFactory.Companion.getInstance(reader).getBoardService(),

app/src/main/res/layout/activity_login.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".LoginActivity">
+    tools:context=".view.LoginActivity">
 
     <EditText
         android:id="@+id/username"