<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/editText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" />
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextView"
android:textSize="30pt"/>
<RadioGroup
android:id="@+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="@+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="더하기" />
<RadioButton
android:id="@+id/radio1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="빼기" />
<RadioButton
android:id="@+id/radio2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="곱하기" />
</RadioGroup>
</LinearLayout>
package com.calcul;
import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;
public class TestCalculatorActivity extends Activity {
EditText edit1, edit2;
TextView textView1;
RadioGroup radioGroup;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
edit1=(EditText) findViewById(R.id.editText1);
edit2=(EditText) findViewById(R.id.editText2);
textView1=(TextView) findViewById(R.id.textView1);
radioGroup=(RadioGroup) findViewById(R.id.radioGroup1);
radioGroup.setOnCheckedChangeListener(
new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(RadioGroup arg0, int arg1) {
String one=edit1.getText().toString();
String two=edit2.getText().toString();
int x = Integer.parseInt(one);
int y = Integer.parseInt(two);
switch(arg1){
case R.id.radio0:
textView1.setText(x+y+"");
break;
case R.id.radio1:
textView1.setText(x-y+"");
break;
case R.id.radio2:
textView1.setText(x*y+"");
break;
}
}});
}
}
내가 한거
package com.gusfree.cal;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;
public class TestCalculatorActivity extends Activity {
EditText edit1, edit2;
TextView textView1;
RadioGroup radioGroup;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
edit1=(EditText) findViewById(R.id.editText1);
edit2=(EditText) findViewById(R.id.editText2);
textView1=(TextView) findViewById(R.id.textView1);
radioGroup=(RadioGroup) findViewById(R.id.radioGroup1);
radioGroup.setOnCheckedChangeListener(
new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(RadioGroup arg0, int arg1) {
//" a " -> trim() -> "a"
//" " -> trim() -> ""
Editable editable1=edit1.getText();
String one=editable1.toString().trim();
//String one=edit1.getText().toString();
String two=edit2.getText().toString().trim();
/*if(one==null || one.length()<1){
one="0";
}
if(one==null || one.length()<1){
two="0";
}*/
int x = Integer.parseInt(one);
int y = Integer.parseInt(two);
switch(arg1){
case R.id.radio0:
if(x!=0 || y!=0){
textView1.setText("더한값 "+(x+y)+"");
}else{
textView1.setText("정확한 값을 입력하시오");
}
break;
case R.id.radio1:
textView1.setText("뺀값 "+(x-y)+"");
break;
case R.id.radio2:
textView1.setText("곱한값 "+(x*y)+"");
break;
}
}
});
}
}
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