android/app/build.gradle.kts

@@ -39,7 +39,7 @@ dependencies {
 
     implementation("com.squareup.retrofit2:retrofit:2.9.0")
     implementation("com.squareup.retrofit2:converter-gson:2.9.0")
-    implementation("com.squareup.okhttp3:logging-interceptor:4.9.1")
+    implementation("com.squareup.okhttp3:logging-interceptor:4.12.0")
     implementation("com.squareup.okhttp3:okhttp:4.12.0")
 
     implementation("com.google.android.material:material:1.11.0")

android/app/src/main/java/com/example/petstoremobile/activities/HomeActivity.java

@@ -39,15 +39,8 @@ public class HomeActivity extends AppCompatActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        EdgeToEdge.enable(this);
         setContentView(R.layout.activity_home);
 
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
-            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
-            return insets;
-        });
-
         //get the bottom navbar from the layout
         bottomNav = findViewById(R.id.bottom_navigation);
         

android/app/src/main/java/com/example/petstoremobile/activities/MainActivity.java

@@ -52,15 +52,8 @@ public class MainActivity extends AppCompatActivity {
             }
         }
 
-        EdgeToEdge.enable(this);
         setContentView(R.layout.activity_main);
 
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
-            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
-            return insets;
-        });
-
         //get all controls from layout
         tvLoginStatus = findViewById(R.id.tvLoginStatus);
         etUser     = findViewById(R.id.etUser);
@@ -132,15 +125,43 @@ public class MainActivity extends AppCompatActivity {
                                     }
                                 });
                     } else {
-                        Toast.makeText(MainActivity.this, "Login failed", Toast.LENGTH_SHORT).show();
-                        tvLoginStatus.setText("Login failed");
+                        String errorMessage;
+                        switch (response.code()) {
+                            case 401:
+                                errorMessage = "Invalid username or password";
+                                break;
+                            case 500:
+                                errorMessage = "Server error. Please try again later.";
+                                break;
+                            case 503:
+                                errorMessage = "Service unavailable. Backend may be starting up.";
+                                break;
+                            default:
+                                errorMessage = "Login failed (Error " + response.code() + ")";
+                        }
+                        Toast.makeText(MainActivity.this, errorMessage, Toast.LENGTH_LONG).show();
+                        tvLoginStatus.setText(errorMessage);
                     }
                 }
 
                 @Override
                 public void onFailure(Call<AuthDTO.LoginResponse> call, Throwable t) {
-                    Toast.makeText(MainActivity.this, "Login failed", Toast.LENGTH_SHORT).show();
-                    tvLoginStatus.setText("Login failed");
+                    Log.e("MainActivity", "Login request failed", t);
+
+                    String errorMessage;
+                    if (t instanceof java.net.ConnectException ||
+                        t instanceof java.net.SocketTimeoutException ||
+                        t instanceof java.net.UnknownHostException) {
+                        errorMessage = "Cannot connect to server at " + RetrofitClient.BASE_URL +
+                                ". Please check if the backend is running.";
+                    } else if (t instanceof java.io.IOException) {
+                        errorMessage = "Network error. Please check your connection.";
+                    } else {
+                        errorMessage = "Login failed: " + t.getMessage();
+                    }
+
+                    Toast.makeText(MainActivity.this, errorMessage, Toast.LENGTH_LONG).show();
+                    tvLoginStatus.setText(errorMessage);
                 }
             });
         });

android/app/src/main/java/com/example/petstoremobile/api/RetrofitClient.java

@@ -11,6 +11,8 @@ import okhttp3.logging.HttpLoggingInterceptor;
 import retrofit2.Retrofit;
 import retrofit2.converter.gson.GsonConverterFactory;
 
+import java.util.concurrent.TimeUnit;
+
 //Retrofit client Used for API calls
 public class RetrofitClient {
     public static final String BASE_URL = getBaseUrl();
@@ -41,6 +43,9 @@ public class RetrofitClient {
         OkHttpClient client = new OkHttpClient.Builder()
                 .addInterceptor(interceptor)
                 .addInterceptor(new AuthInterceptor(context))
+                .connectTimeout(30, TimeUnit.SECONDS)
+                .readTimeout(30, TimeUnit.SECONDS)
+                .writeTimeout(30, TimeUnit.SECONDS)
                 .build();
 
         //build the retrofit object with all needed properties

backend/src/main/resources/application.yml

@@ -36,6 +36,7 @@ spring:
 
 server:
   port: ${SERVER_PORT:8080}
+  address: ${SERVER_ADDRESS:0.0.0.0}
   servlet:
     context-path: /