Permite a construção do layout baseado em cartões. Para mais detalhes sobre Card View: GOOGLE DEVELOPERS. Criar um layout baseado em cards. Disponível em: https://developer.android.com/guide/topics/ui/layout/cardview?hl=pt-br. Acesso: 14 de jul. 2025.

Exemplos práticos:

colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="black">#FF000000</color>
    <color name="white">#FFFFFFFF</color>
    <color name="red">#D31B1B</color>
    <color name="green">#4CAF50</color>
    <color name="blue">#03A9F4</color>
</resources>

main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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"
    android:orientation="vertical"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <androidx.cardview.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            app:cardBackgroundColor="@color/green"
            app:cardCornerRadius="20dp"
            app:cardElevation="10dp"
            app:cardUseCompatPadding="true">
            <ImageView
                android:id="@+id/imgBolo"
                android:layout_width="200dp"
                android:layout_height="200dp"
                android:layout_gravity="center"
                android:layout_margin="10dp"
                android:src="@drawable/bolo_de_fuba" />
        </androidx.cardview.widget.CardView>
        <androidx.cardview.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            app:cardBackgroundColor="@color/red"
            app:cardCornerRadius="20dp"
            app:cardElevation="10dp"
            app:cardUseCompatPadding="true">
            <ImageView
                android:id="@+id/imgCafe"
                android:layout_width="200dp"
                android:layout_height="200dp"
                android:layout_gravity="center"
                android:layout_margin="10dp"
                android:src="@drawable/coffee" />
        </androidx.cardview.widget.CardView>
        <androidx.cardview.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            app:cardBackgroundColor="@color/blue"
            app:cardCornerRadius="20dp"
            app:cardElevation="10dp"
            app:cardUseCompatPadding="true">
            <ImageView
                android:id="@+id/imgPizza"
                android:layout_width="200dp"
                android:layout_height="200dp"
                android:layout_gravity="center"
                android:layout_margin="10dp"
                android:src="@drawable/book__1_" />
        </androidx.cardview.widget.CardView>
    </LinearLayout>
</ScrollView>

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
   }
}

Recycler View

Recurso que permite criar listas dinâmicas com mais eficiência e economia de recursos. Para mais detalhes sobre Recycler View: GOOGLE DEVELOPERS. Criar listas dinâmicas com o Recycler View. Disponível em: https://developer.android.com/guide/topics/ui/layout/recyclerview?hl=pt-br. Acesso: 14 de jul. 2025.

Exemplos práticos:

colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="black">#FF000000</color>
    <color name="white">#FFFFFFFF</color>
    <color name="red">#D92121</color>
    <color name="green">#8BC34A</color>
    <color name="blue">#2196F3</color>
</resources>

activity_main.xml

<?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=".MainActivity">
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycleView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>

item_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    app:cardBackgroundColor="@color/blue"
    app:cardCornerRadius="8dp"
    app:cardElevation="8dp"
    app:cardUseCompatPadding="true">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="10dp">
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center_horizontal"
            android:src="@mipmap/ic_launcher" />
        <TextView
            android:id="@+id/textView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Texto Exemplo"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:gravity="center"
            android:paddingTop="8dp"/>
    </LinearLayout>
</androidx.cardview.widget.CardView>

ItemModel.java

public class ItemModel {
    private int imagem;
    private String texto;
    public ItemModel(int imagem, String texto) {
        this.imagem = imagem;
        this.texto = texto;
    }
    public int getImagem() {
        return imagem;
    }
    public void setImagem(int imagem) {
        this.imagem = imagem;
    }
    public String getTexto() {
        return texto;
    }
    public void setTexto(String texto) {
        this.texto = texto;
    }
    @Override
    public String toString() {
        return "ItemModal{" +
                "imagem=" + imagem +
                ", texto='" + texto + '\'' +
                '}';
    }
}

ItemAdapter.java

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> {
    private Context context;
    private ArrayList<ItemModel> itemModelArrayList;
    private OnItemClickListener listener;
    public ItemAdapter(Context context, ArrayList<ItemModel> itemModelArrayList, OnItemClickListener listener) {
        this.context = context;
        this.itemModelArrayList = itemModelArrayList;
        this.listener = listener;
    }
    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.item_layout, parent, false);
        return new ViewHolder(view);
    }
    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        ItemModel item = itemModelArrayList.get(position);
        holder.imageView.setImageResource(item.getImagem());
        holder.textView.setText(item.getTexto());
        holder.itemView.setOnClickListener(v -> {
            if (listener != null) {
                listener.onItemClick(item);
            }
        });
    }
    @Override
    public int getItemCount() {
        return itemModelArrayList.size();
    }
    public static class ViewHolder extends RecyclerView.ViewHolder {
        ImageView imageView;
        TextView textView;
        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            imageView = itemView.findViewById(R.id.imageView);
            textView = itemView.findViewById(R.id.textView);
        }
    }
    public interface OnItemClickListener {
        void onItemClick(ItemModel item);
    }
}

ItemData.java

import java.util.ArrayList;
public class ItemData {
    public static ArrayList<ItemModel> getItems() {
        ArrayList<ItemModel> itemList = new ArrayList<>();
        itemList.add(new ItemModel(R.mipmap.ic_launcher, "Item 1"));
        itemList.add(new ItemModel(R.mipmap.ic_launcher, "Item 2"));
        itemList.add(new ItemModel(R.mipmap.ic_launcher, "Item 3"));
        return itemList;
    }
}

MainActivity.java

import android.os.Bundle;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ItemAdapter adapter;
    private ArrayList<ItemModel> itemList;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        recyclerView = findViewById(R.id.recycleView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        itemList = ItemData.getItems();
        adapter = new ItemAdapter(this, itemList, new ItemAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(ItemModel item) {
                Toast.makeText(MainActivity.this, "Clicou em: " + item.getTexto(), Toast.LENGTH_SHORT).show();
            }
        });
        recyclerView.setAdapter(adapter);
    }
}