Agregado Login/logout

app/src/main/java/com/cesanelli/lajusta/MainActivity.java

@@ -5,6 +5,7 @@ import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.Menu;
+import android.view.MenuItem;
 
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
@@ -19,33 +20,48 @@ import com.google.android.material.navigation.NavigationView;
 public class MainActivity extends AppCompatActivity {
 
     private AppBarConfiguration mAppBarConfiguration;
+    private SharedPreferences sharedpreferences;
+    private NavigationView navigationView;
+    private SharedPreferences.OnSharedPreferenceChangeListener listener = new SharedPreferences.OnSharedPreferenceChangeListener() {
+        @Override
+        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+            if (key == "JWT") {
+                String jwt = sharedPreferences.getString(key, "");
+                navigationView.getMenu().findItem(R.id.nav_login).setVisible(jwt == "");
+                navigationView.getMenu().findItem(R.id.nav_logout).setVisible(jwt != "");
+                Log.v("JWT CHANGED!!!", sharedPreferences.getString(key, ""));
+            }
+        }
+    };
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        sharedpreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        sharedpreferences.registerOnSharedPreferenceChangeListener(listener);
+
         setContentView(R.layout.activity_main);
         Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         DrawerLayout drawer = findViewById(R.id.drawer_layout);
-        NavigationView navigationView = findViewById(R.id.nav_view);
+        navigationView = findViewById(R.id.nav_view);
+        navigationView.getMenu().findItem(R.id.nav_logout).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                sharedpreferences.edit().putString("JWT", "").apply();
+                return true;
+            }
+        });
         // Passing each menu ID as a set of Ids because each
         // menu should be considered as top level destinations.
         mAppBarConfiguration = new AppBarConfiguration.Builder(
-                R.id.nav_quienes_somos, R.id.nav_news, R.id.nav_producers, R.id.nav_products,R.id.nav_cart, R.id.nav_login)
+                R.id.nav_quienes_somos, R.id.nav_news, R.id.nav_producers, R.id.nav_products, R.id.nav_cart, R.id.nav_login)
                 .setDrawerLayout(drawer)
                 .build();
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
         NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
         NavigationUI.setupWithNavController(navigationView, navController);
-        SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
-        sharedpreferences.registerOnSharedPreferenceChangeListener(new SharedPreferences.OnSharedPreferenceChangeListener() {
-            @Override
-            public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-                if(key == "JWT"){
-                    Log.v("JWT CHANGED!!!",sharedPreferences.getString(key,""));
-                }
-            }
-        });
     }
 
     @Override
@@ -55,10 +71,22 @@ public class MainActivity extends AppCompatActivity {
         return true;
     }
 
+    @Override
+    protected void onResume() {
+        sharedpreferences.registerOnSharedPreferenceChangeListener(listener);
+        super.onResume();
+    }
+
     @Override
     public boolean onSupportNavigateUp() {
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
         return NavigationUI.navigateUp(navController, mAppBarConfiguration)
                 || super.onSupportNavigateUp();
     }
+
+    @Override
+    protected void onPause() {
+        sharedpreferences.unregisterOnSharedPreferenceChangeListener(listener);
+        super.onPause();
+    }
 }
\ No newline at end of file

app/src/main/java/com/cesanelli/lajusta/ui/LoginFragment.java

@@ -71,8 +71,9 @@ public class LoginFragment extends Fragment {
                     public void onResponse(Call<Token> call, Response<Token> response) {
                         try {
                             if (response.isSuccessful()) {
-                                Log.v("LOGIN", response.body().getValue());
+                                Toast.makeText(getContext(),"¡Bienvenido "+ login_user.getText().toString()+"!",Toast.LENGTH_SHORT);
                                 sharedpreferences.edit().putString("JWT", response.body().getValue()).apply();
+                                Navigation.findNavController(v).navigate(R.id.nav_products);
                             }
                         } catch (Exception ex) {
                             Toast.makeText(getContext(), ex.getMessage(), Toast.LENGTH_LONG).show();

app/src/main/res/menu/activity_main_drawer.xml

@@ -28,5 +28,10 @@
             android:id="@+id/nav_login"
             android:icon="@drawable/ic_menu_gallery"
             android:title="@string/menu_login" />
+        <item
+            android:id="@+id/nav_logout"
+            android:icon="@drawable/ic_menu_gallery"
+            android:title="@string/menu_logout"
+            android:visible="false"/>
     </group>
 </menu>
\ No newline at end of file

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

@@ -11,6 +11,7 @@
     <string name="menu_products">Productos</string>
     <string name="menu_product">Producto</string>
     <string name="menu_login">Login</string>
+    <string name="menu_logout">Cerrar Sesión</string>
     <string name="menu_register">Registrar</string>
     <string name="menu_cart">Carrito de Compras</string>
     <string name="menu_purchase">Detalle Compra</string>