해결좀 해주세용~~~~
package logo.test;

import android.app.Activity;
import android.bluetooth.*;
import android.content.*;
import android.os.Bundle;
import android.view.*;
import android.widget.*;


public class test extends Activity {

 private static final int REQUEST_ENABLE_BT = 2;
 //블루투스 어댑터를 통해서 다른 블루투스 디바이스를 찾을수 있다.
 private BluetoothAdapter mBluetoothAdapter = null;

 /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       
        setContentView(R.layout.main);
         
       
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); //블루투스를어댑터를 얻기 위해서 getDefaultAdapter를 해야됨
             
     if (mBluetoothAdapter == null) {
               Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
               finish();
               return;
           }
            
     if (!mBluetoothAdapter.isEnabled()) {//블루투스 활성화 시키기요ㅋㅋㅋ
               Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
               startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
          
     }
       
     
    }
}