[안드로이드 프로그래밍] 10장 직접 풀어보기 10-2

한빛아카데미 Android Studio를 활용한 안드로이드 프로그래밍 6판

 

p.407 직접 풀어보기 10-2

 

[실습 10-2]의 투표 결과 화면에서 가장 많은 표를 받은 그림과 그 제목을 화면에 보여준다.

Integer imageFileId[] = {R.drawable.pic1, R.drawable.pic2,
                R.drawable.pic3, R.drawable.pic4, R.drawable.pic5,
                R.drawable.pic6, R.drawable.pic7, R.drawable.pic8,
                R.drawable.pic9}

 

HINT

• result.xml과 ResultActivity.java 파일만 수정하여 작성한다.
• 레이팅바를 작은 모양으로 변경한다.
• 이미지 파일의 아이디를 저장할 배열을 만든다.

 

코드

MainActivity.java

package com.cookandroid.test;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("명화 선호도 투표");

        final int voteCount[] = new int[9];
        for (int i = 0; i < 9; i++)
            voteCount[i] = 0;
        // 9개의 이미지 버튼 객체 배열
        ImageView image[] = new ImageView[9];
        // 9개의 이미지 버튼 ID 배열
        Integer imageId[] = {R.id.iv1, R.id.iv2, R.id.iv3, R.id.iv4, R.id.iv5,
                R.id.iv6, R.id.iv7, R.id.iv8, R.id.iv9};

        final String imgName[] = {"독서하는 소녀", "꽃장식 모자 소녀", "부채를 든 소녀",
                "이레느깡 단 베르양", "잠자는 소녀", "테라스의 두 자매",
                "피아노 레슨", "피아노 앞의 소녀들", "해변에서"};

        for (int i = 0; i < imageId.length; i++) {
            final int index = i; // 꼭 필요함
            image[index] = findViewById(imageId[index]);
            image[index].setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    voteCount[index]++;
                    Toast.makeText(getApplicationContext(),
                            imgName[index] + ": 총 " + voteCount[index] + " 표",
                            Toast.LENGTH_SHORT).show();
                }
            });
        }

        Button btnFinish = (Button) findViewById(R.id.btnResult);
        btnFinish.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(), ResultActivity.class);
                intent.putExtra("VoteCount", voteCount);
                intent.putExtra("ImageName", imgName);
                startActivity(intent);
            }
        });
    }
}

 

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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/iv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic1" />

        <ImageView
            android:id="@+id/iv2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic2" />

        <ImageView
            android:id="@+id/iv3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic3" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/iv4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic4" />

        <ImageView
            android:id="@+id/iv5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic5" />

        <ImageView
            android:id="@+id/iv6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic6" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/iv7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic7" />

        <ImageView
            android:id="@+id/iv8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic8" />

        <ImageView
            android:id="@+id/iv9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic9" />
    </LinearLayout>

    <Button
        android:id="@+id/btnResult"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:text="투표 종료" />
</LinearLayout>

 

ResultActivity.java

package com.cookandroid.test;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class ResultActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.result);
        setTitle("투표 결과");

        Intent intent = getIntent();
        int[] voteResult = intent.getIntArrayExtra("VoteCount");
        String[] imageName = intent.getStringArrayExtra("ImageName");

        Integer imageFileId[] = {R.drawable.pic1, R.drawable.pic2,
                R.drawable.pic3, R.drawable.pic4, R.drawable.pic5,
                R.drawable.pic6, R.drawable.pic7, R.drawable.pic8,
                R.drawable.pic9};

        TextView tvTop = findViewById(R.id.tvTop);
        ImageView ivTop = findViewById(R.id.ivTop);
        int maxEntry = 0;
        for (int i = 1; i < voteResult.length; i++) {
            if (voteResult[maxEntry] < voteResult[i])
                maxEntry = i;
        }
        tvTop.setText(imageName[maxEntry]);
        ivTop.setImageResource(imageFileId[maxEntry]);

        TextView tv[] = new TextView[imageName.length];
        RatingBar rbar[] = new RatingBar[imageName.length];

        Integer tvID[] = {R.id.tv1, R.id.tv2, R.id.tv3, R.id.tv4, R.id.tv5,
                R.id.tv6, R.id.tv7, R.id.tv8, R.id.tv9};
        Integer rbarID[] = {R.id.rbar1, R.id.rbar2, R.id.rbar3, R.id.rbar4,
                R.id.rbar5, R.id.rbar6, R.id.rbar7, R.id.rbar8, R.id.rbar9};

        for (int i = 0; i < voteResult.length; i++) {
            tv[i] = (TextView) findViewById(tvID[i]);
            rbar[i] = (RatingBar) findViewById(rbarID[i]);
        }

        for (int i = 0; i < voteResult.length; i++) {
            tv[i].setText(imageName[i]);
            rbar[i].setRating((float) voteResult[i]);
        }

        Button btnReturn = (Button) findViewById(R.id.btnReturn);
        btnReturn.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                finish();
            }
        });
    }
}

 

result.xml

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical"
    android:stretchColumns="0">

    <TableRow>

        <TextView
            android:id="@+id/tvTop"
            android:layout_gravity="center"
            android:layout_span="2"
            android:text="## 우승 그림 : "
            android:textSize="15dp" />
    </TableRow>

    <TableRow>

        <ImageView
            android:id="@+id/ivTop"
            android:layout_width="150dp"
            android:layout_height="150dp"
            android:layout_margin="10dp"
            android:layout_span="2"
            android:scaleType="fitCenter"
            android:src="@drawable/pic1" />
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv1"
            android:layout_gravity="center_vertical"
            android:text="그림1"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar1"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv2"
            android:layout_gravity="center_vertical"
            android:text="그림2"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar2"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv3"
            android:layout_gravity="center_vertical"
            android:text="그림3"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar3"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv4"
            android:layout_gravity="center_vertical"
            android:text="그림4"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar4"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv5"
            android:layout_gravity="center_vertical"
            android:text="그림5"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar5"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv6"
            android:layout_gravity="center_vertical"
            android:text="그림6"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar6"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv7"
            android:layout_gravity="center_vertical"
            android:text="그림7"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar7"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv8"
            android:layout_gravity="center_vertical"
            android:text="그림8"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar8"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <TextView
            android:id="@+id/tv9"
            android:layout_gravity="center_vertical"
            android:text="그림9"
            android:textSize="15dp" />

        <RatingBar
            android:id="@+id/rbar9"
            style="?android:attr/ratingBarStyleSmall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="right"></RatingBar>
    </TableRow>

    <TableRow>

        <Button
            android:id="@+id/btnReturn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_span="2"
            android:text="돌아가기" />
    </TableRow>
</TableLayout>

 

결과