ตัวอย่างโปรแกรมคำนวนค่า GDC หรือ ห.ร.ม.

ตัวอย่างโปรแกรมคำนวนค่า GDC หรือ ห.ร.ม.

XML ในส่วนของ User Interface

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:id="@+id/widget39"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<TextView
android:layout_height="wrap_content"
android:text="Number 1 : "
android:layout_width="wrap_content"
android:id="@+id/LabelNumber1"
android:layout_x="6dp"
android:layout_y="24dp"></TextView>

<TextView
android:layout_height="wrap_content"
android:text="Number 2 : "
android:layout_width="wrap_content"
android:id="@+id/LabelNumber2"
android:layout_x="6dp"
android:layout_y="82dp"></TextView>

<EditText
android:textSize="18sp"
android:layout_height="wrap_content"
android:layout_width="213px"
android:id="@+id/EtNumber1"
android:layout_x="80dp"
android:layout_y="10dp">
    <requestFocus></requestFocus>
</EditText>

<EditText
android:textSize="18sp"
android:layout_height="wrap_content"
android:layout_width="214px"
android:id="@+id/EtNumver2"
android:layout_x="80dp"
android:layout_y="66dp"></EditText>

<TextView
android:layout_height="wrap_content"
android:text="GCD : "
android:layout_width="wrap_content"
android:id="@+id/ansTxt"
android:layout_x="9dp"
android:layout_y="139dp"></TextView>

<TextView
android:layout_height="wrap_content"
android:text="Count Loop : "
android:layout_width="wrap_content"
android:id="@+id/countTxt"
android:layout_x="122dp"
android:layout_y="140dp"></TextView>

<Button
android:text="Calculate"
android:id="@+id/BtnCalc"
android:layout_height="wrap_content"
android:layout_width="300px"
android:layout_x="14dp"
android:layout_y="183dp"></Button>

<Button
android:text="Reset"
android:id="@+id/BtnReset"
android:layout_height="wrap_content"
android:layout_width="300px"
android:layout_x="14dp"
android:layout_y="240dp"></Button>

</AbsoluteLayout>

Source Code ในส่วนของตัวโปรแกรม

package slayer.euclid;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class EuclidActivity extends Activity {
 
 private EditText txtNumber1;
 private EditText txtNumber2;
 private TextView ansTxt;
 private TextView countTxt;
 private  Button btnCalc;
 private Button BtnCalc;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        initControls();
    }
    
    private void initControls()
    {
     txtNumber1 = (EditText)findViewById(R.id.EtNumber1);
     txtNumber2 = (EditText)findViewById(R.id.EtNumver2);
     btnCalc = (Button)findViewById(R.id.BtnCalc);
     ansTxt = (TextView)findViewById(R.id.ansTxt);
     countTxt = (TextView)findViewById(R.id.countTxt);
     btnCalc.setOnClickListener(new Button.OnClickListener() { public void onClick (View v){ calculate(); }});
     BtnCalc = (Button)findViewById(R.id.BtnReset);
     BtnCalc.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {reset();}});
    }
    
    private void calculate()
    {
     long r,m,n;
     int i=0;
     m = Long.parseLong(txtNumber1.getText().toString());
     n = Long.parseLong(txtNumber2.getText().toString());
     
        while(n != 0)
        {
            r = m%n;
            m = n;
            n = r;
            i++;
        }
        
        ansTxt.setText("GCD : " + Long.toString(m));
        countTxt.setText("Count Loop : " + Integer.toString(i));
    }
    
    private void reset()
    {
     txtNumber1.setText("");
     txtNumber2.setText("");
        ansTxt.setText("GCD : ");
        countTxt.setText("Count Loop : ");
    }
 }