<?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:weightSum="1" android:orientation="vertical">
 <LinearLayout android:layout_height="wrap_content"
  android:id="@+id/linearLayout1" android:layout_width="match_parent" android:orientation="horizontal">
  <Button android:layout_width="wrap_content"
   android:layout_height="wrap_content" android:text="Button"
   android:id="@+id/button1"></Button>
  <Button android:layout_width="wrap_content"
   android:layout_height="wrap_content" android:text="Button"
   android:id="@+id/button2"></Button>
  <Button android:text="Button" android:id="@+id/button3"
   android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
 </LinearLayout>
 <LinearLayout android:layout_height="wrap_content"
  android:id="@+id/linearLayout2" android:layout_width="match_parent" android:orientation="horizontal">
  <Button android:text="Button" android:id="@+id/button4"
   android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
  <Button android:text="Button" android:id="@+id/button5"
   android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
  <Button android:text="Button" android:id="@+id/button6"
   android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
 </LinearLayout>
 <LinearLayout android:layout_height="wrap_content"
  android:id="@+id/linearLayout3" android:layout_width="match_parent" android:orientation="horizontal">
  <Button android:id="@+id/button7" android:layout_width="wrap_content"
   android:layout_height="wrap_content" android:text="start"></Button>
 </LinearLayout>
</LinearLayout>

 package com.android.Lotto2;

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

public class Lotto2 extends Activity {
    /** Called when the activity is first created. */
 
 Button[] buttons;
 int[]numbers;
 //int number = 0;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        int[] buttonIds = {R.id.button1, R.id.button2, R.id.button3,
          R.id.button4, R.id.button5, R.id.button6};
        buttons = new Button[6];
        numbers = new int[6];
        
        for(int i = 0; i < 6; i++){
         buttons[i] = (Button)findViewById(buttonIds[i]);
        }
        
        Button btn = (Button)findViewById(R.id.button7);
        btn.setOnClickListener(new Button.OnClickListener() {       
         public void onClick(View v) {
          do{
           for(int i = 0; i < 6; i++){
            int number = (int)(Math.random()*45) + 1;
            numbers[i] = number;
           }
          }while(isDuplicate());
          sort();
          for(int i =0; i < 6; i++){
           buttons[i].setText(String.valueOf(numbers[i]));
          }
         }
        });
    }
    //정렬
    public void sort(){
     for(int i = 0; i < 5; i++){
      for(int j = 0; j < 6; j++){
       if(numbers[i] > numbers[j]){
        int temp = numbers[i];
        numbers[i] = numbers[j];
        numbers[j] = temp;
       }
      }
     }
    }
     //중복제거
     public boolean isDuplicate(){
      for(int i = 0; i < 5; i++)
       for(int j = i+1; j < 6; i++)
        if(numbers[i] == numbers[j])
         return true;
      return false;
     }
    
}

로또소스인데요. 아무 에러도 없고 로그켓에서도 얌전합니다.

그런데 start버튼 클릭을 하면 노트북 cpu펜이 사정없이 돌아갑니다. SDK는 다운먹은거 같구요....

왜이러는 건가요? 코드에 무슨 문제가 있겠죠??

도저히 문제점을 못찾겠네요....