안드로이드(자바) 야구게임 만들기 예제

 

 

 

package kr.co.aiai.app;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity9 extends AppCompatActivity {


    String com = "897";
    EditText et;
    TextView tv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main9);

        et = findViewById(R.id.et);
        tv = findViewById(R.id.tv);
        Button btn = findViewById(R.id.btn);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                myclick();
            }
        });
        ranC();
    }
    public void ranC(){
        int[] arr = {1,2,3,4,5,6,7,8,9};

        for (int i = 0; i <= 100; i++) {
            int rnd = (int) (Math.random() * 9);
            int a = arr[0];
            arr[0] = arr[rnd];
            arr[rnd] = a;
        }

        com = arr[0]+""+arr[1]+""+arr[2];
        Log.d("test",com);

     }

    public int getS(String com, String mine){
        int  ret = 0;
        String m1 = mine.substring(0,1);
        String m2 = mine.substring(1,2);
        String m3 = mine.substring(2,3);

        String c1 = com.substring(0,1);
        String c2 = com.substring(1,2);
        String c3 = com.substring(2,3);

        if(m1.equals(c1)) ret++;
        if(m2.equals(c2)) ret++;
        if(m3.equals(c3)) ret++;

        return ret;
    }

    public int getB(String com, String mine){
        int ret = 0;

        String m1 = mine.substring(0,1);
        String m2 = mine.substring(1,2);
        String m3 = mine.substring(2,3);

        String c1 = com.substring(0,1);
        String c2 = com.substring(1,2);
        String c3 = com.substring(2,3);

        if(m1.equals(c2) || m1.equals(c3) ) ret++;
        if(m2.equals(c1) || m2.equals(c3)) ret++;
        if(m3.equals(c1) || m2.equals(c2)) ret++;

        return ret;
    }

    public void myclick() {

        String mine = et.getText().toString();
        int s = getS(com, mine);
        int b = getB(com, mine);

        String str_old = tv.getText().toString();
        String str_new = mine + "    "+s+"s"+b+"b"+"\n";

        tv.setText(str_new + str_old);
        et.setText("");

        if(s==3){
            Toast toast = Toast.makeText(getApplicationContext(),mine+"정답입니다.", Toast.LENGTH_SHORT);
            toast.show();
        }
        Log.d("test",mine +" " + s + "s" + b + "b");

    }
}

 

 

<?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">

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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/textView"
                android:layout_width="100dp"
                android:layout_height="wrap_content"
                android:text="야구수:"
                android:textSize="25dp" />

            <EditText
                android:id="@+id/et"
                android:layout_width="300dp"
                android:layout_height="wrap_content"
                android:ems="10"
                android:inputType="number" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:orientation="horizontal">

            <Button
                android:id="@+id/btn"
                android:layout_width="match_parent"
                android:layout_height="60dp"
                android:text="게임하기" />
        </LinearLayout>

        <TextView
            android:id="@+id/tv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="TextView" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

 

결과