package com.example.admin.afinal;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.Random;

public class MainActivity extends AppCompatActivity {

    Button btn1;
    Random rnd;

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

        btn1 = (Button) findViewById(R.id.btn1);
        rnd = new Random();
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int num = rnd.nextInt(5);
                Toast.makeText(getApplicationContext(),
                        num + "번이 나왔습니다.", Toast.LENGTH_SHORT).show();
            }
        });

    }


}