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안드로이드 리사이클러뷰는 기본적으로 뷰끼리 붙어있습니다. 간격을 조정해서 띄움으로써 좀 더 데이터의 구분이 쉬워집니다.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/monsterRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp">
<ImageView
android:id="@+id/imgMonster"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_marginRight="30dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="5dp">
<TextView
android:id="@+id/txtName"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="sample"
android:textSize="24sp" />
<TextView
android:id="@+id/txtLevel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Lv. sample"
android:textSize="24sp" />
</LinearLayout>
</LinearLayout>
MainActivity
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class MainActivity extends AppCompatActivity {
int ITEM_DIVIDER_HEIGHT = 200; // 간격의 높이를 원하는 만큼 설정합니다.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = findViewById(R.id.monsterRecyclerView);
recyclerView.setAdapter(new Adapter());
recyclerView.setLayoutManager(new LinearLayoutManager(this));
// RecyclerView에 간격을 설정하는 ItemDecoration을 추가합니다.
recyclerView.addItemDecoration(new RecyclerDecoration(ITEM_DIVIDER_HEIGHT));
}
}
RecyclerDecoration
import android.graphics.Rect;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class RecyclerDecoration extends RecyclerView.ItemDecoration{
private final int divHeight;
public RecyclerDecoration(int divHeight) {
this.divHeight = divHeight;
}
@Override
public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
if (parent.getChildAdapterPosition(view) != parent.getAdapter().getItemCount() - 1)
outRect.bottom = divHeight;
}
}
DTO
public class DTO {
private String name;
private String level;
private int image;
public DTO(String name, String level, int image) {
this.name = name;
this.level = level;
this.image = image;
}
public String getName() {
return name;
}
public String getLevel() {
return level;
}
public int getImage() {
return image;
}
}
Adapter
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
public class Adapter extends RecyclerView.Adapter<Adapter.MonsterViewHolder> {
ArrayList<DTO> items;
public Adapter() {
items = new ArrayList<>();
items.add(new DTO("테스트1", "간격의높이조절해보기1", R.drawable.ic_launcher_background));
items.add(new DTO("테스트2", "간격의높이조절해보기2", R.drawable.ic_launcher_background));
items.add(new DTO("테스트3", "간격의높이조절해보기3", R.drawable.ic_launcher_background));
}
@NonNull
@Override
public MonsterViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
return new MonsterViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull MonsterViewHolder holder, int position) {
DTO currentMonster = items.get(position);
holder.monsterName.setText(currentMonster.getName());
holder.monsterLevel.setText(currentMonster.getLevel());
holder.monsterImage.setImageResource(currentMonster.getImage());
}
@Override
public int getItemCount() {
return items.size();
}
static class MonsterViewHolder extends RecyclerView.ViewHolder {
TextView monsterName;
TextView monsterLevel;
ImageView monsterImage;
public MonsterViewHolder(@NonNull View itemView) {
super(itemView);
monsterName = itemView.findViewById(R.id.txtName);
monsterLevel = itemView.findViewById(R.id.txtLevel);
monsterImage = itemView.findViewById(R.id.imgMonster);
}
}
}
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