โโํ ์ด๋ธ ๋ ์ด์์์ ์ด์ฉํ์ฌ ๊ณ์ฐ๊ธฐ ์ฑ ๋ง๋ค๊ธฐโโ
activity_main.xml
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<TableLayout 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">
<TableRow>
<EditText
android:id="@+id/Edit1"
android:layout_span="5"
android:hint="์ซ์1 ์
๋ ฅ"/>
</TableRow>
<TableRow>
<EditText
android:id="@+id/Edit2"
android:layout_span="5"
android:hint="์ซ์2 ์
๋ ฅ"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnNum0"
android:text="0"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum1"
android:text="1"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum2"
android:text="2"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum3"
android:text="3"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum4"
android:text="4"
android:layout_weight="1"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnNum5"
android:text="5"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum6"
android:text="6"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum7"
android:text="7"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum8"
android:text="8"
android:layout_weight="1"/>
<Button
android:id="@+id/BtnNum9"
android:text="9"
android:layout_weight="1"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnAdd"
android:layout_margin="5dp"
android:layout_span="5"
android:text="๋ํ๊ธฐ"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnSub"
android:layout_margin="5dp"
android:layout_span="5"
android:text="๋นผ๊ธฐ"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnMul"
android:layout_margin="5dp"
android:layout_span="5"
android:text="๊ณฑํ๊ธฐ"/>
</TableRow>
<TableRow>
<Button
android:id="@+id/BtnDiv"
android:layout_margin="5dp"
android:layout_span="5"
android:text="๋๋๊ธฐ"/>
</TableRow>
<TableRow>
<TextView
android:id="@+id/TextResult"
android:layout_margin="5dp"
android:layout_span="5"
android:text="๊ณ์ฐ๊ฒฐ๊ณผ : "
android:textColor="#FF0000"
android:textSize="20dp"/>
</TableRow>
</TableLayout>
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cs |
MainActivity.java
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import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
EditText edit1, edit2;
Button btnAdd, btnSub, btnMul, btnDiv;
TextView textResult;
String num1, num2;
Integer result;
Button[] numButtons = new Button[10];
Integer[] numBtnIDs = {R.id.BtnNum0,R.id.BtnNum1, R.id.BtnNum2, R.id.BtnNum3,
R.id.BtnNum4, R.id.BtnNum5, R.id.BtnNum6, R.id.BtnNum7, R.id.BtnNum8, R.id.BtnNum9};
int i;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("ํ
์ด๋ธ๋ ์ด์์ ๊ณ์ฐ๊ธฐ");
edit1 = (EditText) findViewById(R.id.Edit1);
edit2 = (EditText) findViewById(R.id.Edit2);
btnAdd = (Button) findViewById(R.id.BtnAdd);
btnSub = (Button) findViewById(R.id.BtnSub);
btnMul = (Button) findViewById(R.id.BtnMul);
btnDiv = (Button) findViewById(R.id.BtnDiv);
textResult = (TextView) findViewById(R.id.TextResult);
btnAdd.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
num1 = edit1.getText().toString();
num2 = edit2.getText().toString();
result = Integer.parseInt(num1) + Integer.parseInt(num2);
textResult.setText("๊ณ์ฐ ๊ฒฐ๊ณผ : " + result.toString());
return false;
}
});
btnSub.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
num1 = edit1.getText().toString();
num2 = edit2.getText().toString();
result = Integer.parseInt(num1) - Integer.parseInt(num2);
textResult.setText("๊ณ์ฐ ๊ฒฐ๊ณผ : " + result.toString());
return false;
}
});
btnMul.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
num1 = edit1.getText().toString();
num2 = edit2.getText().toString();
result = Integer.parseInt(num1) * Integer.parseInt(num2);
textResult.setText("๊ณ์ฐ ๊ฒฐ๊ณผ : " + result.toString());
return false;
}
});
btnDiv.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
num1 = edit1.getText().toString();
num2 = edit2.getText().toString();
result = Integer.parseInt(num1) / Integer.parseInt(num2);
textResult.setText("๊ณ์ฐ ๊ฒฐ๊ณผ : " + result.toString());
return false;
}
});
for (i=0;i<numBtnIDs.length;i++){
numButtons[i] = (Button) findViewById(numBtnIDs[i]);
}
for (i=0;i<numBtnIDs.length;i++) {
final int index;
index = i;
numButtons[index].setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (edit1.isFocused() == true) {
num1 = edit1.getText().toString()
+ numButtons[index].getText().toString();
edit1.setText(num1);
} else if (edit2.isFocused() == true) {
num2 = edit2.getText().toString()
+ numButtons[index].getText().toString();
edit2.setText(num2);
} else {
Toast.makeText(getApplicationContext(),
"๋จผ์ ์๋ํธํ
์คํธ๋ฅผ ์ ํํ์ธ์", Toast.LENGTH_SHORT).show();
}
}
});
}
}
}
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cs |
์คํ๊ฒฐ๊ณผ :
๋๊ธ