안드로이드 앱 만들기! 자바 사칙연산 계산기 어플 코드!

package com.example.cal;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.RadioGroup;

public class MainActivity extends Activity {

    EditText x;

    EditText y;

    EditText output;

    RadioGroup op;

    Button exe;

   

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

x = (EditText)findViewById(R.id.x);

y = (EditText)findViewById(R.id.y);

output = (EditText)findViewById(R.id.output);

op = (RadioGroup)findViewById(R.id.op);

exe = (Button)findViewById(R.id.exe);

   exe.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

String x1 = x.getText().toString();

int x2 = Integer.parseInt(x1);

String y1 = y.getText().toString();

int y2 = Integer.parseInt(y1);

int opId = op.getCheckedRadioButtonId();

String result = "";

if(opId == R.id.add){

result = (x2+y2+"");

}else if(opId == R.id.min){

result = (x2-y2+"");

}else if(opId == R.id.mul){

result = (x2*y2+"");

}else if(opId == R.id.div){

result = (double)x2/(double)y2+"";

}

           output.setText(result);

          

}

});

}

}

 

제 포스팅이 유용하셨다면 "추천&구독&댓글"누르시고~ 서로 구독해요!