랜덤 숫자 게임

랜덤 숫자 게임

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2022-08-10(38일차), 11(39일차)

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📃랜덤 숫자 게임

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📝activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_start"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="게임 시작하기"
        android:textSize="30sp" />

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

        <TextView
            android:id="@+id/tv_01"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_weight="1"
            android:background="#ff9999"
            android:gravity="center"
            android:textSize="40sp" />

        <TextView
            android:id="@+id/tv_02"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_weight="1"
            android:background="#9999ff"
            android:gravity="center"
            android:textSize="40sp" />

        <TextView
            android:id="@+id/tv_03"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_weight="1"
            android:background="#99ffff"
            android:gravity="center"
            android:textSize="40sp" />

    </LinearLayout>

    <Button
        android:id="@+id/btn_stop"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="멈추기"
        android:textSize="20dp" />

</LinearLayout>

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📝MainActivity.java

package com.project.review02;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    TextView tv_01;
    TextView tv_02;
    TextView tv_03;
    Button btn_stop;
    int num1;
    int num2;
    int num3;

    Handler handler = new Handler(Looper.getMainLooper()) {
        @Override
        public void handleMessage(@NonNull Message msg) {
            super.handleMessage(msg);
            num1 = getRandomNum();
            num2 = getRandomNum();
            num3 = getRandomNum();
            if(msg.what == 1) {

                btn_stop.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        removeMessages(1);
                    }
                });


                tv_01.setText(num1+"");
                tv_02.setText(num2+"");
                tv_03.setText(num3+"");
                sendEmptyMessageDelayed(1, 50);
            }
        }
    };

    public int getRandomNum() {
        int num = (int)(Math.random()*10)+1;
        return num;
    }

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

        tv_01 = findViewById(R.id.tv_01);
        tv_02 = findViewById(R.id.tv_02);
        tv_03 = findViewById(R.id.tv_03);

        btn_stop = findViewById(R.id.btn_stop);

        findViewById(R.id.btn_start).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                handler.sendEmptyMessage(1);
            }
        });
    }


}

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