first commit

2025-11-19 10:19:28 +00:00
commit cf9958d749
70 changed files with 2204 additions and 0 deletions
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -0,0 +1,57 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.google.gms.google.services)
+}
+
+android {
+    namespace = "pt.epvc.bookepvc"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "pt.epvc.bookepvc"
+        minSdk = 24
+        targetSdk = 35
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    buildFeatures {
+        viewBinding = true
+    }
+}
+
+dependencies {
+
+    implementation(libs.appcompat)
+    implementation(libs.material)
+    implementation(libs.activity)
+    implementation(libs.constraintlayout)
+    implementation(libs.firebase.auth)
+    implementation(libs.credentials)
+    implementation(libs.credentials.play.services.auth)
+    implementation(libs.googleid)
+    implementation(libs.firebase.database)
+    implementation(libs.lifecycle.livedata.ktx)
+    implementation(libs.lifecycle.viewmodel.ktx)
+    implementation(libs.navigation.fragment)
+    implementation(libs.navigation.ui)
+    implementation("com.github.bumptech.glide:glide:4.16.0")
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.ext.junit)
+    androidTestImplementation(libs.espresso.core)
+}
--- a/app/google-services.json
+++ b/app/google-services.json
@@ -0,0 +1,135 @@
+{
+  "project_info": {
+    "project_number": "406964905525",
+    "firebase_url": "https://appfitness-diogoaraujo-default-rtdb.firebaseio.com",
+    "project_id": "appfitness-diogoaraujo",
+    "storage_bucket": "appfitness-diogoaraujo.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:406964905525:android:670c117046fa2d5e92737c",
+        "android_client_info": {
+          "package_name": "com.example.appfitness_diogoaraujo"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "406964905525-kar1bm8u1fkh2s8hvres922ve297hu4m.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCEJZcwUQJgxTtrlwhx6X3RL2lLmEiPSlk"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "406964905525-f8bd83i5nm11pfsci1k4r3csl22hjk63.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:406964905525:android:db9b3a136612a8ad92737c",
+        "android_client_info": {
+          "package_name": "com.example.listadetarefas"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "406964905525-kar1bm8u1fkh2s8hvres922ve297hu4m.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCEJZcwUQJgxTtrlwhx6X3RL2lLmEiPSlk"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "406964905525-f8bd83i5nm11pfsci1k4r3csl22hjk63.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:406964905525:android:87e31bb3e793bc6c92737c",
+        "android_client_info": {
+          "package_name": "pt.epvc.bookepvc"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "406964905525-kar1bm8u1fkh2s8hvres922ve297hu4m.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCEJZcwUQJgxTtrlwhx6X3RL2lLmEiPSlk"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "406964905525-f8bd83i5nm11pfsci1k4r3csl22hjk63.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:406964905525:android:4baef372e5a1654a92737c",
+        "android_client_info": {
+          "package_name": "pt.epvc.myapplication"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "406964905525-crntsltikktupvnf83ol5q7jqqsnt5tb.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "pt.epvc.myapplication",
+            "certificate_hash": "d927ad3015ea959e422752128cc5811be6f16444"
+          }
+        },
+        {
+          "client_id": "406964905525-kar1bm8u1fkh2s8hvres922ve297hu4m.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCEJZcwUQJgxTtrlwhx6X3RL2lLmEiPSlk"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "406964905525-f8bd83i5nm11pfsci1k4r3csl22hjk63.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
--- a/app/src/androidTest/java/pt/epvc/bookepvc/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/pt/epvc/bookepvc/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package pt.epvc.bookepvc;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("pt.epvc.bookepvc", appContext.getPackageName());
+    }
+}
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.BookEpvc"
+        tools:targetApi="31">
+        <activity
+            android:name=".DetalheLivroActivity"
+            android:exported="false" />
+        <activity
+            android:name=".PrincipalActivity"
+            android:exported="false"
+            android:label="@string/title_activity_principal" />
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
--- a/app/src/main/java/pt/epvc/bookepvc/DetalheLivroActivity.java
+++ b/app/src/main/java/pt/epvc/bookepvc/DetalheLivroActivity.java
@@ -0,0 +1,64 @@
+package pt.epvc.bookepvc;
+
+import android.os.Bundle;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.bumptech.glide.Glide;
+
+import pt.epvc.bookepvc.models.Livro;
+
+public class DetalheLivroActivity extends AppCompatActivity {
+
+    private TextView tituloTextView;
+    private TextView autorTextView;
+    private ImageView capaImageView;
+    private TextView resumoTextView;
+    private TextView editorTextView;
+    private TextView anoPublicacaoTextView;
+    private TextView categoriaTextView;
+    private TextView paginasTextView;
+    private TextView isbnTextView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_detalhe_livro);
+        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;
+        });
+
+        Livro livro = (Livro) getIntent().getExtras().get("livro");
+        tituloTextView = findViewById(R.id.tituloTextView);
+        autorTextView = findViewById(R.id.autorTextView);
+        capaImageView = findViewById(R.id.capaImageView);
+        resumoTextView = findViewById(R.id.resumoTextView);
+        editorTextView = findViewById(R.id.editorTextView);
+        anoPublicacaoTextView = findViewById(R.id.anoPublicacaoTextView);
+        categoriaTextView = findViewById(R.id.categoriaTextView);
+        paginasTextView = findViewById(R.id.paginasTextView);
+        isbnTextView = findViewById(R.id.isbnTextView);
+        if (livro != null) {
+            tituloTextView.setText(livro.getTitulo());
+            autorTextView.setText(livro.getAutor());
+            resumoTextView.setText(livro.getResumo());
+            editorTextView.setText(livro.getEditor());
+            anoPublicacaoTextView.setText(livro.getAnoPublicacao());
+            categoriaTextView.setText(livro.getCategoria());
+            paginasTextView.setText(livro.getNumeroPaginas());
+            Glide.with(this).load(livro.getImagem()).into(capaImageView);
+        }
+
+
+
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/MainActivity.java
+++ b/app/src/main/java/pt/epvc/bookepvc/MainActivity.java
@@ -0,0 +1,85 @@
+package pt.epvc.bookepvc;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import androidx.activity.EdgeToEdge;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.google.android.gms.tasks.OnCompleteListener;
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.auth.AuthResult;
+import com.google.firebase.auth.FirebaseAuth;
+
+public class MainActivity extends AppCompatActivity {
+
+    private EditText emailEditText;
+    private EditText passwordEditText;
+    private Button loginButton;
+    private TextView esquecimePasswordTextView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        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;
+        });
+
+        emailEditText = findViewById(R.id.emailEditText);
+        passwordEditText = findViewById(R.id.passwordEditText);
+        loginButton = findViewById(R.id.loginButton);
+        esquecimePasswordTextView = findViewById(R.id.esquecimePasswordTextView);
+
+        loginButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String email = emailEditText.getText().toString();
+                String password = passwordEditText.getText().toString();
+                if(email.isBlank()){
+                    emailEditText.setError("O campo de email é obrigatório");
+                    return;
+                }
+                if(password.isBlank()){
+                    passwordEditText.setError("O campo de palavra-passe é obrigatório");
+                    return;
+                }
+                FirebaseAuth.getInstance().signInWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
+                    @Override
+                    public void onComplete(@NonNull Task<AuthResult> task) {
+                        if(task.isSuccessful()){
+                            Intent intent = new Intent(MainActivity.this, PrincipalActivity.class);
+                            startActivity(intent);
+                            finish();
+                        }
+                        else{
+                            passwordEditText.setError("Credenciais Inválidas");
+                            emailEditText.setError("Credenciais Inválidas");
+                        }
+                    }
+                });
+            }
+        });
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        if(FirebaseAuth.getInstance().getCurrentUser() != null){
+            Intent intent = new Intent(MainActivity.this, PrincipalActivity.class);
+            startActivity(intent);
+            finish();
+        }
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/PrincipalActivity.java
+++ b/app/src/main/java/pt/epvc/bookepvc/PrincipalActivity.java
@@ -0,0 +1,39 @@
+package pt.epvc.bookepvc;
+
+import android.os.Bundle;
+import android.view.View;
+
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.navigation.NavController;
+import androidx.navigation.Navigation;
+import androidx.navigation.ui.AppBarConfiguration;
+import androidx.navigation.ui.NavigationUI;
+
+import pt.epvc.bookepvc.databinding.ActivityPrincipalBinding;
+import pt.epvc.bookepvc.models.Livro;
+
+public class PrincipalActivity extends AppCompatActivity {
+
+    private ActivityPrincipalBinding binding;
+    private Livro Livro;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityPrincipalBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        BottomNavigationView navView = findViewById(R.id.nav_view);
+        // Passing each menu ID as a set of Ids because each
+        // menu should be considered as top level destinations.
+        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
+                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
+                .build();
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_principal);
+        //NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
+        NavigationUI.setupWithNavController(binding.navView, navController);
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/adapters/CategoriasAdapter.java
+++ b/app/src/main/java/pt/epvc/bookepvc/adapters/CategoriasAdapter.java
@@ -0,0 +1,110 @@
+package pt.epvc.bookepvc.adapters;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+import com.google.firebase.database.ValueEventListener;
+
+import java.util.ArrayList;
+
+import pt.epvc.bookepvc.R;
+import pt.epvc.bookepvc.models.Livro;
+
+public class CategoriasAdapter extends RecyclerView.Adapter<CategoriasAdapter.ViewHolder> {
+
+    private ArrayList<String> listaCategorias;
+    private Context context;
+
+    /**
+     * Provide a reference to the type of views that you are using
+     * (custom ViewHolder)
+     */
+    public static class ViewHolder extends RecyclerView.ViewHolder {
+        private final TextView categoriaTextView;
+        private final RecyclerView livrosRecyclerView;
+
+        public ViewHolder(View view) {
+            super(view);
+            // Define click listener for the ViewHolder's View
+
+            categoriaTextView = (TextView) view.findViewById(R.id.categoriaTextView);
+            livrosRecyclerView = (RecyclerView) view.findViewById(R.id.livrosRecyclerView);
+        }
+
+        public TextView getCategoriaTextView() {
+            return categoriaTextView;
+        }
+        public RecyclerView getLivrosRecyclerView() {
+            return livrosRecyclerView;
+        }
+    }
+
+    /**
+     * Initialize the dataset of the Adapter
+     *
+     * @param dataSet String[] containing the data to populate views to be used
+     * by RecyclerView
+     */
+    public CategoriasAdapter(ArrayList<String> dataSet, Context context) {
+        listaCategorias = dataSet;
+        this.context = context;
+    }
+
+    // Create new views (invoked by the layout manager)
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
+        // Create a new view, which defines the UI of the list item
+        View view = LayoutInflater.from(viewGroup.getContext())
+                .inflate(R.layout.item_principal, viewGroup, false);
+
+        return new ViewHolder(view);
+    }
+
+    // Replace the contents of a view (invoked by the layout manager)
+    @Override
+    public void onBindViewHolder(ViewHolder viewHolder, final int position) {
+
+        // Get element from your dataset at this position and replace the
+        // contents of the view with that element
+        viewHolder.getCategoriaTextView().setText(listaCategorias.get(position));
+
+
+        DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference();
+        databaseReference.child("livros").addListenerForSingleValueEvent(new ValueEventListener() {
+            @Override
+            public void onDataChange(@NonNull DataSnapshot snapshot) {
+                ArrayList<Livro> listaLivros = new ArrayList<>();
+                for (DataSnapshot dataSnapshot : snapshot.getChildren()) {
+                    Livro livro = dataSnapshot.getValue(Livro.class);
+                    if (livro.getCategoria().equals(listaCategorias.get(position))){
+                        listaLivros.add(livro);
+                    }
+                }
+                viewHolder.getLivrosRecyclerView().setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));
+                viewHolder.getLivrosRecyclerView().setAdapter(new LivrosAdapter(listaLivros,context));
+            }
+
+            @Override
+            public void onCancelled(@NonNull DatabaseError error) {
+
+            }
+        });
+    }
+
+    // Return the size of your dataset (invoked by the layout manager)
+    @Override
+    public int getItemCount() {
+        return listaCategorias.size();
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/adapters/LivrosAdapter.java
+++ b/app/src/main/java/pt/epvc/bookepvc/adapters/LivrosAdapter.java
@@ -0,0 +1,98 @@
+package pt.epvc.bookepvc.adapters;
+
+import android.content.Context;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.Glide;
+
+import java.util.ArrayList;
+
+import pt.epvc.bookepvc.DetalheLivroActivity;
+import pt.epvc.bookepvc.R;
+import pt.epvc.bookepvc.models.Livro;
+
+public class LivrosAdapter extends RecyclerView.Adapter<LivrosAdapter.ViewHolder> {
+
+    private Context context;
+    private ArrayList<Livro> listaLivros;
+
+    /**
+     * Provide a reference to the type of views that you are using
+     * (custom ViewHolder)
+     */
+    public static class ViewHolder extends RecyclerView.ViewHolder {
+        private final TextView tituloTextView;
+        private final ImageView livroImageView;
+
+        public ViewHolder(View view) {
+            super(view);
+            // Define click listener for the ViewHolder's View
+
+            tituloTextView = (TextView) view.findViewById(R.id.tituloTextView);
+            livroImageView = (ImageView) view.findViewById(R.id.livroImageView);
+        }
+
+        public TextView getTituloTextView() {
+            return tituloTextView;
+        }
+
+        public ImageView getLivroImageView() {
+            return livroImageView;
+        }
+    }
+
+    /**
+     * Initialize the dataset of the Adapter
+     *
+     * @param listaLivros String[] containing the data to populate views to be used
+     * by RecyclerView
+     */
+    public LivrosAdapter(ArrayList<Livro> listaLivros, Context context) {
+        this.listaLivros = listaLivros;
+        this.context = context;
+    }
+
+    // Create new views (invoked by the layout manager)
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
+        // Create a new view, which defines the UI of the list item
+        View view = LayoutInflater.from(viewGroup.getContext())
+                .inflate(R.layout.item_livro, viewGroup, false);
+
+        return new ViewHolder(view);
+    }
+
+    // Replace the contents of a view (invoked by the layout manager)
+    @Override
+    public void onBindViewHolder(ViewHolder viewHolder, final int position) {
+
+        // Get element from your dataset at this position and replace the
+        // contents of the view with that element
+        viewHolder.getTituloTextView().setText(listaLivros.get(position).getTitulo());
+        Glide.with(context)
+                .load(listaLivros.get(position).getImagem())
+                .into(viewHolder.getLivroImageView());
+        viewHolder.getLivroImageView().setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(context, DetalheLivroActivity.class);
+                Livro livro = listaLivros.get(position);
+                intent.putExtra("livro", livro);
+                context.startActivity(intent);
+            }
+        });
+    }
+
+    // Return the size of your dataset (invoked by the layout manager)
+    @Override
+    public int getItemCount() {
+        return listaLivros.size();
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/models/Livro.java
+++ b/app/src/main/java/pt/epvc/bookepvc/models/Livro.java
@@ -0,0 +1,112 @@
+package pt.epvc.bookepvc.models;
+
+import java.io.Serializable;
+
+public class Livro implements Serializable {
+    private String titulo;
+    private String autor;
+    private String editor;
+    private String anoPublicacao;
+    private String categoria;
+    private String isbn;
+    private String resumo;
+    private String id;
+    private String imagem;
+    private String numeroPaginas;
+
+    public Livro() {
+    }
+
+    public Livro(String titulo, String autor, String editor, String anoPublicacao, String categoria, String isbn, String resumo, String id, String imagem, String numeroPaginas) {
+        this.titulo = titulo;
+        this.autor = autor;
+        this.editor = editor;
+        this.anoPublicacao = anoPublicacao;
+        this.categoria = categoria;
+        this.isbn = isbn;
+        this.resumo = resumo;
+        this.id = id;
+        this.imagem = imagem;
+        this.numeroPaginas = numeroPaginas;
+    }
+
+    public String getTitulo() {
+        return titulo;
+    }
+
+    public void setTitulo(String titulo) {
+        this.titulo = titulo;
+    }
+
+    public String getAutor() {
+        return autor;
+    }
+
+    public void setAutor(String autor) {
+        this.autor = autor;
+    }
+
+    public String getEditor() {
+        return editor;
+    }
+
+    public void setEditor(String editor) {
+        this.editor = editor;
+    }
+
+    public String getAnoPublicacao() {
+        return anoPublicacao;
+    }
+
+    public void setAnoPublicacao(String anoPublicacao) {
+        this.anoPublicacao = anoPublicacao;
+    }
+
+    public String getCategoria() {
+        return categoria;
+    }
+
+    public void setCategoria(String categoria) {
+        this.categoria = categoria;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+    public String getResumo() {
+        return resumo;
+    }
+
+    public void setResumo(String resumo) {
+        this.resumo = resumo;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getImagem() {
+        return imagem;
+    }
+
+    public void setImagem(String imagem) {
+        this.imagem = imagem;
+    }
+
+    public String getNumeroPaginas() {
+        return numeroPaginas;
+    }
+
+    public void setNumeroPaginas(String numeroPaginas) {
+        this.numeroPaginas = numeroPaginas;
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/ui/dashboard/DashboardFragment.java
+++ b/app/src/main/java/pt/epvc/bookepvc/ui/dashboard/DashboardFragment.java
@@ -0,0 +1,37 @@
+package pt.epvc.bookepvc.ui.dashboard;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+
+import pt.epvc.bookepvc.databinding.FragmentDashboardBinding;
+
+public class DashboardFragment extends Fragment {
+
+    private FragmentDashboardBinding binding;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        DashboardViewModel dashboardViewModel =
+                new ViewModelProvider(this).get(DashboardViewModel.class);
+
+        binding = FragmentDashboardBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        final TextView textView = binding.textDashboard;
+        dashboardViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/ui/dashboard/DashboardViewModel.java
+++ b/app/src/main/java/pt/epvc/bookepvc/ui/dashboard/DashboardViewModel.java
@@ -0,0 +1,19 @@
+package pt.epvc.bookepvc.ui.dashboard;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class DashboardViewModel extends ViewModel {
+
+    private final MutableLiveData<String> mText;
+
+    public DashboardViewModel() {
+        mText = new MutableLiveData<>();
+        mText.setValue("This is dashboard fragment");
+    }
+
+    public LiveData<String> getText() {
+        return mText;
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/ui/home/HomeFragment.java
+++ b/app/src/main/java/pt/epvc/bookepvc/ui/home/HomeFragment.java
@@ -0,0 +1,67 @@
+package pt.epvc.bookepvc.ui.home;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+import com.google.firebase.database.ValueEventListener;
+
+import java.util.ArrayList;
+
+import pt.epvc.bookepvc.R;
+import pt.epvc.bookepvc.adapters.CategoriasAdapter;
+import pt.epvc.bookepvc.databinding.FragmentHomeBinding;
+
+public class HomeFragment extends Fragment {
+
+    private FragmentHomeBinding binding;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+
+
+        binding = FragmentHomeBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        RecyclerView principalRecyclerView = root.findViewById(R.id.principalRecyclerView);
+        DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference();
+        databaseReference.child("categorias").addListenerForSingleValueEvent(new ValueEventListener() {
+            @Override
+            public void onDataChange(@NonNull DataSnapshot snapshot) {
+                ArrayList<String> listaCategorias = new ArrayList<>();
+                for (DataSnapshot dataSnapshot : snapshot.getChildren()) {
+                    String categoria = dataSnapshot.getValue(String.class);
+                    listaCategorias.add(categoria);
+                }
+                CategoriasAdapter adapter = new CategoriasAdapter(listaCategorias, getContext());
+                principalRecyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
+                principalRecyclerView.setAdapter(adapter);
+            }
+
+            @Override
+            public void onCancelled(@NonNull DatabaseError error) {
+
+            }
+        });
+
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/ui/notifications/NotificationsFragment.java
+++ b/app/src/main/java/pt/epvc/bookepvc/ui/notifications/NotificationsFragment.java
@@ -0,0 +1,37 @@
+package pt.epvc.bookepvc.ui.notifications;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+
+import pt.epvc.bookepvc.databinding.FragmentNotificationsBinding;
+
+public class NotificationsFragment extends Fragment {
+
+    private FragmentNotificationsBinding binding;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        NotificationsViewModel notificationsViewModel =
+                new ViewModelProvider(this).get(NotificationsViewModel.class);
+
+        binding = FragmentNotificationsBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        final TextView textView = binding.textNotifications;
+        notificationsViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+}
--- a/app/src/main/java/pt/epvc/bookepvc/ui/notifications/NotificationsViewModel.java
+++ b/app/src/main/java/pt/epvc/bookepvc/ui/notifications/NotificationsViewModel.java
@@ -0,0 +1,19 @@
+package pt.epvc.bookepvc.ui.notifications;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class NotificationsViewModel extends ViewModel {
+
+    private final MutableLiveData<String> mText;
+
+    public NotificationsViewModel() {
+        mText = new MutableLiveData<>();
+        mText.setValue("This is notifications fragment");
+    }
+
+    public LiveData<String> getText() {
+        return mText;
+    }
+}
--- a/app/src/main/res/drawable/ic_dashboard_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_dashboard_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3,13h8L11,3L3,3v10zM3,21h8v-6L3,15v6zM13,21h8L21,11h-8v10zM13,3v6h8L21,3h-8z" />
+</vector>
--- a/app/src/main/res/drawable/ic_home_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_home_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z" />
+</vector>
--- a/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
--- a/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
--- a/app/src/main/res/drawable/ic_notifications_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_notifications_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.89,2 2,2zM18,16v-5c0,-3.07 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.63,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2z" />
+</vector>
--- a/app/src/main/res/layout/activity_detalhe_livro.xml
+++ b/app/src/main/res/layout/activity_detalhe_livro.xml
@@ -0,0 +1,178 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".DetalheLivroActivity">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+            <ImageView
+                android:id="@+id/capaImageView"
+                android:layout_width="218dp"
+                android:layout_height="267dp"
+                android:layout_marginTop="32dp"
+                android:scaleType="centerCrop"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent"
+                tools:srcCompat="@tools:sample/avatars" />
+
+            <TextView
+                android:id="@+id/tituloTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="TextView"
+                android:textSize="34sp"
+                app:layout_constraintEnd_toEndOf="@+id/capaImageView"
+                app:layout_constraintStart_toStartOf="@+id/capaImageView"
+                app:layout_constraintTop_toBottomOf="@+id/capaImageView" />
+
+            <TextView
+                android:id="@+id/resumoTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:paddingLeft="16dp"
+                android:paddingRight="16dp"
+                android:text="«Bem-vinda à família», diz Nina Winchester enquanto me cumprimenta com a sua mão elegante e bem cuidada. Sorrio educadamente e olho para o longo corredor de mármore.   Este emprego caiu-me do céu. Talvez seja a minha última oportunidade para mudar de vida. E o melhor de tudo é que aqui ninguém sabe nada acerca do meu passado. Posso esconder-me e fingir ser aquilo que eu quiser. Infelizmente, não tardo a descobrir que os segredos dos Winchester são muito mais perigosos do que os meus…   «A Criada de Freida McFadden é uma daquelas obras fantásticas que, nos próximos anos, vou elogiar e recomendar a qualquer pessoa que queira ler um thriller incrível. É, claramente, um dos melhores livros do ano!» Goodreads "
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/tituloTextView" />
+
+            <TextView
+                android:id="@+id/categoriaTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Categoria"
+                app:layout_constraintStart_toStartOf="@+id/autorTextView"
+                app:layout_constraintTop_toBottomOf="@+id/autorTextView" />
+
+            <TextView
+                android:id="@+id/editorTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Editor"
+                app:layout_constraintStart_toStartOf="@+id/anoPublicacaoTextView"
+                app:layout_constraintTop_toBottomOf="@+id/anoPublicacaoTextView" />
+
+            <TextView
+                android:id="@+id/textView22"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="48dp"
+                android:layout_marginTop="32dp"
+                android:text="Autor"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/resumoTextView" />
+
+            <TextView
+                android:id="@+id/textView20"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="ISBN"
+                app:layout_constraintEnd_toEndOf="@+id/textView16"
+                app:layout_constraintTop_toBottomOf="@+id/textView16" />
+
+            <TextView
+                android:id="@+id/textView16"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Páginas"
+                app:layout_constraintEnd_toEndOf="@+id/textView19"
+                app:layout_constraintTop_toBottomOf="@+id/textView19" />
+
+            <TextView
+                android:id="@+id/textView19"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Editor"
+                app:layout_constraintEnd_toEndOf="@+id/textView15"
+                app:layout_constraintTop_toBottomOf="@+id/textView15" />
+
+            <TextView
+                android:id="@+id/textView15"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Ano"
+                app:layout_constraintEnd_toEndOf="@+id/textView17"
+                app:layout_constraintTop_toBottomOf="@+id/textView17" />
+
+            <TextView
+                android:id="@+id/textView17"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Categoria"
+                app:layout_constraintEnd_toEndOf="@+id/textView22"
+                app:layout_constraintTop_toBottomOf="@+id/textView22" />
+
+            <TextView
+                android:id="@+id/autorTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="16dp"
+                android:text="Autor"
+                app:layout_constraintStart_toEndOf="@+id/textView22"
+                app:layout_constraintTop_toTopOf="@+id/textView22" />
+
+            <TextView
+                android:id="@+id/anoPublicacaoTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Ano"
+                app:layout_constraintStart_toStartOf="@+id/categoriaTextView"
+                app:layout_constraintTop_toBottomOf="@+id/categoriaTextView" />
+
+            <TextView
+                android:id="@+id/paginasTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="Páginas"
+                app:layout_constraintStart_toStartOf="@+id/editorTextView"
+                app:layout_constraintTop_toBottomOf="@+id/editorTextView" />
+
+            <TextView
+                android:id="@+id/isbnTextView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="ISBN"
+                app:layout_constraintStart_toStartOf="@+id/paginasTextView"
+                app:layout_constraintTop_toBottomOf="@+id/paginasTextView" />
+
+            <Button
+                android:id="@+id/button"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="16dp"
+                android:layout_marginTop="16dp"
+                android:layout_marginEnd="16dp"
+                android:layout_marginBottom="72dp"
+                android:text="Requisitar"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintHorizontal_bias="0.0"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/textView20" />
+        </androidx.constraintlayout.widget.ConstraintLayout>
+    </ScrollView>
+
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <ImageView
+        android:id="@+id/logoImageView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="64dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:srcCompat="@tools:sample/avatars" />
+
+    <TextView
+        android:id="@+id/tituloTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="64dp"
+        android:text="TextView"
+        app:layout_constraintEnd_toEndOf="@+id/logoImageView"
+        app:layout_constraintStart_toStartOf="@+id/logoImageView"
+        app:layout_constraintTop_toBottomOf="@+id/logoImageView" />
+
+    <EditText
+        android:id="@+id/emailEditText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:ems="10"
+        android:inputType="textEmailAddress"
+        app:layout_constraintEnd_toEndOf="@+id/logoImageView"
+        app:layout_constraintStart_toStartOf="@+id/logoImageView"
+        app:layout_constraintTop_toBottomOf="@+id/tituloTextView" />
+
+    <EditText
+        android:id="@+id/passwordEditText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:ems="10"
+        android:inputType="textPassword"
+        app:layout_constraintEnd_toEndOf="@+id/emailEditText"
+        app:layout_constraintStart_toStartOf="@+id/emailEditText"
+        app:layout_constraintTop_toBottomOf="@+id/emailEditText" />
+
+    <TextView
+        android:id="@+id/esquecimePasswordTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="TextView"
+        app:layout_constraintStart_toStartOf="@+id/passwordEditText"
+        app:layout_constraintTop_toBottomOf="@+id/passwordEditText" />
+
+    <Button
+        android:id="@+id/loginButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="@+id/passwordEditText"
+        app:layout_constraintStart_toStartOf="@+id/passwordEditText"
+        app:layout_constraintTop_toBottomOf="@+id/esquecimePasswordTextView" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/activity_principal.xml
+++ b/app/src/main/res/layout/activity_principal.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="?attr/actionBarSize">
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/nav_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="0dp"
+        android:layout_marginEnd="0dp"
+        android:background="?android:attr/windowBackground"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:menu="@menu/bottom_nav_menu" />
+
+    <fragment
+        android:id="@+id/nav_host_fragment_activity_principal"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:layout_constraintBottom_toTopOf="@id/nav_view"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/mobile_navigation" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/fragment_dashboard.xml
+++ b/app/src/main/res/layout/fragment_dashboard.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.dashboard.DashboardFragment">
+
+    <TextView
+        android:id="@+id/text_dashboard"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/fragment_home.xml
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.home.HomeFragment">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/principalRecyclerView"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/searchView" />
+
+    <SearchView
+        android:id="@+id/searchView"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/fragment_notifications.xml
+++ b/app/src/main/res/layout/fragment_notifications.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.notifications.NotificationsFragment">
+
+    <TextView
+        android:id="@+id/text_notifications"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/item_livro.xml
+++ b/app/src/main/res/layout/item_livro.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="200dp"
+    android:layout_height="280dp">
+
+    <ImageView
+        android:id="@+id/livroImageView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toTopOf="@+id/tituloTextView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:srcCompat="@tools:sample/avatars" />
+
+    <TextView
+        android:id="@+id/tituloTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/item_principal.xml
+++ b/app/src/main/res/layout/item_principal.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="350dp">
+
+    <TextView
+        android:id="@+id/categoriaTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:text="TextView"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/livrosRecyclerView"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/categoriaTextView" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/menu/bottom_nav_menu.xml
+++ b/app/src/main/res/menu/bottom_nav_menu.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_home"
+        android:icon="@drawable/ic_home_black_24dp"
+        android:title="@string/title_home" />
+
+    <item
+        android:id="@+id/navigation_dashboard"
+        android:icon="@drawable/ic_dashboard_black_24dp"
+        android:title="@string/title_dashboard" />
+
+    <item
+        android:id="@+id/navigation_notifications"
+        android:icon="@drawable/ic_notifications_black_24dp"
+        android:title="@string/title_notifications" />
+
+</menu>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-hdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/navigation/mobile_navigation.xml
+++ b/app/src/main/res/navigation/mobile_navigation.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/mobile_navigation"
+    app:startDestination="@+id/navigation_home">
+
+    <fragment
+        android:id="@+id/navigation_home"
+        android:name="pt.epvc.bookepvc.ui.home.HomeFragment"
+        android:label="@string/title_home"
+        tools:layout="@layout/fragment_home" />
+
+    <fragment
+        android:id="@+id/navigation_dashboard"
+        android:name="pt.epvc.bookepvc.ui.dashboard.DashboardFragment"
+        android:label="@string/title_dashboard"
+        tools:layout="@layout/fragment_dashboard" />
+
+    <fragment
+        android:id="@+id/navigation_notifications"
+        android:name="pt.epvc.bookepvc.ui.notifications.NotificationsFragment"
+        android:label="@string/title_notifications"
+        tools:layout="@layout/fragment_notifications" />
+</navigation>
--- a/app/src/main/res/values-night/themes.xml
+++ b/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.BookEpvc" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -0,0 +1,7 @@
+<resources>
+    <string name="app_name">BookEpvc</string>
+    <string name="title_activity_principal">PrincipalActivity</string>
+    <string name="title_home">Home</string>
+    <string name="title_dashboard">Dashboard</string>
+    <string name="title_notifications">Notifications</string>
+</resources>
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -0,0 +1,9 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.BookEpvc" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your light theme here. -->
+        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
+    </style>
+
+    <style name="Theme.BookEpvc" parent="Base.Theme.BookEpvc" />
+</resources>
--- a/app/src/main/res/xml/backup_rules.xml
+++ b/app/src/main/res/xml/backup_rules.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
--- a/app/src/main/res/xml/data_extraction_rules.xml
+++ b/app/src/main/res/xml/data_extraction_rules.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
--- a/app/src/test/java/pt/epvc/bookepvc/ExampleUnitTest.java
+++ b/app/src/test/java/pt/epvc/bookepvc/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package pt.epvc.bookepvc;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}