영화 박스오피스 App - Volley 라이브러리 활용, 영화진흥위원회 API 활용

<MainActivity>

package com.example.ex_0718;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    Button btn;
    ListView listview;

    // Volley 사용시 필요한 객체
    RequestQueue requestQueue;
    StringRequest request;

    // Adapter 연결시 필요한 객체
    MovieAdapter adapter;
    ArrayList<MovieVO> dataset;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn = findViewById(R.id.btn);
        listview = findViewById(R.id.listview);

        requestQueue = Volley.newRequestQueue(getApplicationContext());
        dataset = new ArrayList<>();
        adapter = new MovieAdapter(getApplicationContext(),R.layout.movie_item,dataset);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                request = new StringRequest(
                        Request.Method.GET,
                        "https://kobis.or.kr/kobisopenapi/webservice/rest/boxoffice/searchDailyBoxOfficeList.json?key=f5eef3421c602c6cb7ea224104795888&targetDt=20220717",
                        new Response.Listener<String>() {
                            @Override
                            public void onResponse(String response) {
                                try {
                                    JSONObject json = new JSONObject(response);
                                    //json.getJSONObject("boxOfficeResult");
                                    JSONObject json2 = json.getJSONObject("boxOfficeResult");
                                    JSONArray movies = json2.getJSONArray("dailyBoxOfficeList");
                                    for(int i=0; i<movies.length(); i++){
                                        JSONObject movie = (JSONObject) movies.get(i);
                                        Log.d("check",movie.getString("movieNm"));
                                        String rank = movie.getString("rank");
                                        String old_new = movie.getString("rankOldAndNew");
                                        String movie_title = movie.getString("movieNm");
                                        String count = movie.getString("audiAcc");
                                        String open = movie.getString("openDt");
                                        dataset.add(new MovieVO(rank,old_new,movie_title,count,open));
                                    }
                                    listview.setAdapter(adapter);
                                    //String rank = movies.getString(1);
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }
                            }
                        },
                        new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {
                                Log.e("error",error.toString());
                            }
                        }
                );

                requestQueue.add(request);
            }
        });
    }
}

<MovieAdapter>

package com.example.ex_0718;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import org.w3c.dom.Text;

import java.util.ArrayList;

public class MovieAdapter extends BaseAdapter {

    // 1. Adapter 기능을 가질 수 있는 MovieAdapter 클래스 만들기
    // - 필수적으로 구현해야 하는 메소드들 불러올 수 있도록 만들기

    // 2. Adapter에 필요한 객체 선언
    // - 어플의 정보를 담을 수 있는 객체, 레이아웃을 담기 위한 객체, 데이터셋을 담기 위한 객체
    // - 레이아웃 템플릿을 xml -> view 타입으로 변환이 가능한 객체

    private Context context;
    private int layout;
    private ArrayList<MovieVO> dataset;

    private LayoutInflater inflater;

    public MovieAdapter(Context context, int layout, ArrayList<MovieVO> dataset) {
        this.context = context;
        this.layout = layout;
        this.dataset = dataset;

        inflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);


    }

    @Override
    public int getCount() {
        return dataset.size();
    }

    @Override
    public Object getItem(int i) {
        return dataset.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {

        view = inflater.inflate(layout, null);

        TextView rank = view.findViewById(R.id.rank);
        TextView old_new = view.findViewById(R.id.old_new);
        TextView movie_title = view.findViewById(R.id.movie_title);
        TextView count = view.findViewById(R.id.count);
        TextView open = view.findViewById(R.id.open);

        rank.setText(dataset.get(i).getRank());
        old_new.setText(dataset.get(i).getOld_new());
        movie_title.setText(dataset.get(i).getMovie_title());
        count.setText(dataset.get(i).getCount());
        open.setText(dataset.get(i).getOpen());


        return view;
    }
}

<MovieVO>

package com.example.ex_0718;

public class MovieVO {

    // 영화 정보에 필요한 데이터들 정리하기
    private String rank;
    private String old_new;
    private String movie_title;
    private String count;
    private String open;

    public MovieVO(String rank, String old_new, String movie_title, String count, String open) {
        this.rank = rank;
        this.old_new = old_new;
        this.movie_title = movie_title;
        this.count = count;
        this.open = open;
    }

    public String getRank() {
        return rank;
    }

    public void setRank(String rank) {
        this.rank = rank;
    }

    public String getOld_new() {
        return old_new;
    }

    public void setOld_new(String old_new) {
        this.old_new = old_new;
    }

    public String getMovie_title() {
        return movie_title;
    }

    public void setMovie_title(String movie_title) {
        this.movie_title = movie_title;
    }

    public String getCount() {
        return count;
    }

    public void setCount(String count) {
        this.count = count;
    }

    public String getOpen() {
        return open;
    }

    public void setOpen(String open) {
        this.open = open;
    }
}