post방식을 약간 변형하여 get방식으로 php를 호출 하는데

3G망이나 와이파이 망이 꺼져있을때 생기는 에러는 잡았습니다...

하지만 php에서 검색 결과가 없어서 나는 에러는 여기저기 try catch로 잡아봣는데

못잡겠습니다..ㅠㅠ 로그켓 기록 보더라도 널포인터 만 나고 어느 위치에서 에러나는지 안나오고;;

도움좀 부탁드릴게요;;

 public class Nsulib_Serch extends Activity implements OnClickListener {
 EditText edittext;
 Button button;
 String arg;
 String[][] cube;
 String[] cube1;
 String[] item;
 String bkna;
 char[] chackPoint;
 String scresult;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.serch);

  edittext = (EditText) findViewById(R.id.serch_edit);
  button = (Button) findViewById(R.id.serch_bt);
  button.setOnClickListener(this);

 }

 @Override
 public void onClick(View v) {
  // TODO Auto-generated method stub
  bkna = edittext.getText().toString();
  if(bkna.length()<=1){
   Toast.makeText(this, "2글자 이상 입력해주세요", Toast.LENGTH_LONG).show();
  }
  if (bkna.length() >= 2) {// 0607 추가
   item = null;
   chackPoint = bkna.toCharArray();

   if (chackPoint[0] >= 'a' && chackPoint[0] <= 'z'
     || chackPoint[0] >= 'A' && chackPoint[0] <= 'Z') {
   try{ 
    HttpPostData();
   }catch(Exception e){Toast.makeText(this, "통신 상태가 안좋습니다.", Toast.LENGTH_LONG).show();}
   } else {
    try {
     sendData(bkna);
    } catch (ClientProtocolException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }catch(Exception e){Toast.makeText(this, "통신 상태가 안좋습니다.", Toast.LENGTH_LONG).show();}

   }

   // Toast.makeText(this,item[0],Toast.LENGTH_SHORT).show();
   try{
   if (item.length == 0) {
    Toast.makeText(this,"검색 결과가 없습니다.",Toast.LENGTH_SHORT).show();
   } else {// 0607 추가 검색 결과 없을시 에러 처리
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
      android.R.layout.simple_list_item_1, item);
    ListView list = (ListView) findViewById(R.id.list);
    list.setAdapter(adapter);
    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

     @Override
     public void onItemClick(AdapterView<?> parent, View view,
       int position, long id) {
      // TODO Auto-generated method stub
      Intent intent = new Intent(Nsulib_Serch.this,
        Nsulib_ChoiceBook.class);
      intent.putExtra(Nsulib_ChoiceBook.TEXT_INPUT,
        cube1[(int) id]);
      startActivity(intent);
     }
    });
   }
   }catch(Exception e){Toast.makeText(this, "통신 상태가 안좋습니다.", Toast.LENGTH_LONG).show();}
  } 
 }

 private void sendData(String bkna) throws ClientProtocolException,
   IOException {
  // TODO Auto-generated method stub
  HttpPost request = makeHttpPost(bkna,
    "http://burningroid.cafe24.com/nsu/index.php");

  HttpClient client = new DefaultHttpClient();

  ResponseHandler<String> reshandler = new BasicResponseHandler();
  try{
  cube1 = client.execute(request, reshandler).split("hopalt");

  int j = 0;
  j = cube1.length;
  if(j==0){
   Toast.makeText(this, "검색 결과가 없습니다.", Toast.LENGTH_LONG).show();
  }else{
   cube = new String[j][];
   item = new String[j];

   for (int i = 0; i < j; i++) {

    cube[i] = cube1[i].split(",");
    item[i] = cube[i][2];

   }}
  }catch(Exception e){
   Toast.makeText(this, "검색 결과가 없습니다.", Toast.LENGTH_LONG);
  }
 
 }

 private HttpPost makeHttpPost(String $bkna, String $url)
   throws UnsupportedEncodingException {
  // TODO Auto-generated method stub
  HttpPost request = new HttpPost($url);
  Vector<NameValuePair> nameValue = new Vector<NameValuePair>();
  nameValue.add(new BasicNameValuePair("bkna", $bkna));
  UrlEncodedFormEntity ent = new UrlEncodedFormEntity(nameValue,
    HTTP.UTF_8);
  request.setEntity(ent);
  return request;
 }

 private HttpEntity makeEntity(Vector<NameValuePair> $nameValue) {
  HttpEntity result = null;
  try {
   result = new UrlEncodedFormEntity($nameValue, HTTP.UTF_8);
  } catch (UnsupportedEncodingException e) {
   Log.i("json2 : ", e.getMessage());
   // Toast.makeText(this,"여기2",Toast.LENGTH_LONG).show();

  }
  return result;
 }

 protected void HttpPostData() {
  // TODO Auto-generated method stub
  try {
   URL url = new URL("
     "http://burningroid.cafe24.com/nsu/test1.php?bkna=" + bkna);
   HttpURLConnection http = (HttpURLConnection) url.openConnection();
   http.setDefaultUseCaches(false);
   http.setDoInput(true);
   http.setDoOutput(true);
   http.setRequestMethod("POST");
     http.setRequestProperty("content-type",
     "application/x-www-from-urlencoded");

   StringBuffer buffer = new StringBuffer();
   buffer.append("bkna").append("=").append(bkna);
   OutputStreamWriter outStream = new OutputStreamWriter(
     http.getOutputStream(), "UTF-8");
   PrintWriter writer = new PrintWriter(outStream);
   writer.write(buffer.toString());
   writer.flush();

   InputStreamReader tmp = new InputStreamReader(
     http.getInputStream(), "UTF-8");
   BufferedReader reader = new BufferedReader(tmp);
   StringBuilder builder = new StringBuilder();
   String str;
   while ((str = reader.readLine()) != null) {
    builder.append(str + "hopalt");
   }
   try{
   cube1 = builder.toString().split("hopalt");
   int j = 0;
   j = cube1.length;
   j = j - 1;
   if(j==0){
    Toast.makeText(this, "검색 결과가 없습니다.", Toast.LENGTH_LONG).show();
   }else{
    cube = new String[j][];
    item = new String[j];

    for (int i = 0; i < j; i++) {

     cube[i] = cube1[i].split(",");
     item[i] = cube[i][2];

    }}
   }catch(Exception e){
    Toast.makeText(this, "검색 결과가 없습니다.", Toast.LENGTH_LONG);
   }
  } catch (MalformedURLException e) {
   Toast.makeText(this, "오류1", Toast.LENGTH_SHORT).show();
  } catch (IOException e) {
   Toast.makeText(this, "오류2", Toast.LENGTH_SHORT).show();
  }
 }

}