Android(안드로이드 스튜디오) 랜덤 수를 이용한 홀 짝

랜덤 수를 이용한 홀 짝

package com.example.increase;
//본인의 package에 따라 변경
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class HollActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_holl);
//		폴더이름 확인(activity_holl)
//		여기부터 버튼과 글 불러온다.
        EditText sEtm = findViewById(R.id.mEtMine);
        TextView sEtc = findViewById(R.id.mEtCom);
        TextView sEtr = findViewById(R.id.mEtResult);
        Button sbtn = findViewById(R.id.mBtn);

//		버튼 클릭시 이벤트
        sbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int ran = (int) (Math.random() * 2);
                String rans = "";
                if(ran == 1){
                    rans = "홀";
                }else if(ran == 0){
                    rans = "짝";
                }
                sEtc.setText(rans);
                String a = sEtm.getText().toString();
                System.out.println("랜"+sEtm);
                if (a.equals(rans)) {
                    sEtr.setText("승");
                }else if(!(a.equals(rans))){
                    sEtr.setText("패");
                }else {
                    sEtr.setText("다시");
                }
            }
        });
    }
}

- java코드부분

 

<?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"
        tools:layout_editor_absoluteX="130dp"
        tools:layout_editor_absoluteY="125dp">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="50dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/mTvMine"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="나"
                android:textSize="18sp" />

            <EditText
                android:id="@+id/mEtMine"
                android:layout_width="374dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:ems="10"
                android:inputType="textPersonName"
                android:text="홀" />
        </LinearLayout>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/mTvCom"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="컴"
                android:textSize="18sp" />

            <EditText
                android:id="@+id/mEtCom"
                android:layout_width="374dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:ems="10"
                android:inputType="textPersonName"
                android:text="" />
        </LinearLayout>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/mTvResult"
                android:layout_width="150dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="결과"
                android:textSize="18sp" />

            <EditText
                android:id="@+id/mEtResult"
                android:layout_width="374dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:ems="10"
                android:inputType="textPersonName"
                android:text="" />
        </LinearLayout>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:orientation="horizontal">


            <Button
                android:id="@+id/mBtn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="실행하기" />
        </LinearLayout>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

- 안드로이드 화면 설정

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.increase">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Increase">
        <activity android:name=".HollActivity">
        //폴더이름 확인(HollActivity)
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

- manifests 폴더 이름을 확인을위해 참조