致命异常：主java.lang.ArrayIndexOutOfBoundsException：

我有当即时试图从我的数据库错误显示在列表视图数据的问题是“致命异常：主 java.lang.ArrayIndexOutOfBoundsException：长度= 4;索引= 4“ 。我不明白它是什么。致命异常：主java.lang.ArrayIndexOutOfBoundsException：

我希望有人能帮助我感谢

这是我的代码

公共类FragmentMaintain扩展片段{

ListView list; 
TextView mid; 
TextView pid; 
TextView status; 
TextView description; 
TextView note; 
ArrayList<HashMap<String, String>> oslist = new ArrayList<HashMap<String, String>>(); 
//URL to get JSON Array 
private static String url = "http://10.0.2.2/skripsi/json/testing.php"; 

//JSON Node Names 
private static final String TAG_OS = "maintenance"; 
private static final String TAG_MID = "mid"; 
private static final String TAG_PID = "pid"; 
private static final String TAG_STATUS = "status"; 
private static final String TAG_DESCRIPTION = "description"; 
private static final String TAG_NOTE = "note"; 
JSONArray maintenance = null; 
Button Addnotedata; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    Log.d("ZZZ", "ada di oncreateView maintain"); 
    super.onCreate(savedInstanceState); 
    View rootView = inflater.inflate(R.layout.fragment_maintain, container, false); 

    new JSONParse().execute(); 
    return rootView; 


} 


private class JSONParse extends AsyncTask<String, String, JSONObject> { 
    private ProgressDialog pDialog; 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     mid = (TextView) getActivity().findViewById(R.id.mid); 
     pid = (TextView) getActivity().findViewById(R.id.pid); 
     status = (TextView) getActivity().findViewById(R.id.status); 
     description = (TextView) getActivity().findViewById(R.id.description); 
     note = (TextView) getActivity().findViewById(R.id.note); 

     pDialog = new ProgressDialog(getActivity()); 
     pDialog.setMessage("Getting Data ..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(true); 
     pDialog.show(); 
    } 
    @Override 
    protected JSONObject doInBackground(String... args) { 
     //String pid = getArguments().getString("pid"); 
     //List<NameValuePair> params = new ArrayList<NameValuePair>(); 
     //params.add(new BasicNameValuePair("pid", pid)); 
     JSONParser jParser = new JSONParser(); 
     JSONObject json = jParser.makeHttpRequestWithoutParams(url); 
     //Log.d("TES", pid+", "+ json.toString()); 
     return json; 
    } 
    @Override 
    protected void onPostExecute(JSONObject json) { 
     pDialog.dismiss(); 
     try { 
      // Getting JSON Array from URL 
      maintenance = json.getJSONArray(TAG_OS); 
      for(int i = 0; i < maintenance.length(); i++){ 
       JSONObject c = maintenance.getJSONObject(i); 
       // Storing JSON item in a Variable 
       String mid = c.getString(TAG_MID); 
       String pid = c.getString(TAG_PID); 
       String status = c.getString(TAG_STATUS); 
       String description = c.getString(TAG_DESCRIPTION); 
       String note = c.getString(TAG_NOTE); 
       // Adding value HashMap key => value 
       HashMap<String, String> map = new HashMap<String, String>(); 
       map.put(TAG_MID, mid); 
       map.put(TAG_PID, pid); 
       map.put(TAG_STATUS, status); 
       map.put(TAG_DESCRIPTION, description); 
       map.put(TAG_NOTE, note); 
       oslist.add(map); 
       list=(ListView) getActivity().findViewById(R.id.list); 
       ListAdapter adapter = new SimpleAdapter(getActivity(), oslist, 
         R.layout.list_maintain, 
         new String[] { TAG_MID,TAG_PID, TAG_STATUS, TAG_NOTE}, new int[] { 
         R.id.mid,R.id.pid, R.id.status, R.id.description, R.id.note}); 
       list.setAdapter(adapter); 
       list.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
        @Override 
        public void onItemClick(AdapterView<?> parent, View view, 
              int position, long id) { 
         Toast.makeText(getActivity(), "You Clicked at " + oslist.get(+position).get("pid"), Toast.LENGTH_SHORT).show(); 
        } 
       }); 
      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 
    } 
}

}

，这我的logcat

10-10 00：10：50.575 2004年至2004年/ com.example.blackcustomzier.skripsi E/AndroidRuntime：致命异常：主 java.lang.ArrayIndexOutOfBoundsException：长度= 4;在android.widget.SimpleAdapter.getView（SimpleAdapter.java:114）上的android.widget.SimpleAdapter.createViewFromResource（SimpleAdapter.java:126）索引= 4 ）在android.widget.AbsListView.obtainView（AbsListView.java:2177）在android.widget.ListView.makeAndAddView（ListView.java:1840）在android.widget.ListView.fillDown（ListView.java:675） at android.widget.ListView.fillFromTop（ListView.java:736） at android.widget.ListView.layoutChildren（ListView.java:1655） at android.widget.AbsListView.onLayout（AbsListView.java:2012） at android .view.View.layout（View.java:14289） at android.view.ViewGroup.layout（ViewGroup.java:4562） at android.widget.LinearLayout.setChildFrame（LinearLayout.java:1671） at android.widget.LinearLayout.layoutVertical（LinearLayout.java:1525） at android.view.View.Group.layout（ViewGroup.java:4562）在android上。android.view.View.layout（View.java:14289） android.view.Lineout.onLayout（LinearLayout.java:1434） widget.FrameLayout.onLayout（FrameLayout.java:448）在android.view.View.layout（View.java:14289）

来源

2014-10-10 Derry Susilo

看看你的适配器实例。数据键和视图ID的数组大小不同。 – 2014-10-10 04:27:21

什么是oslist.get中的+位置（+ position）.get（“pid”）; ？和你的字符串[]和int []不匹配 – 2014-10-10 04:27:27

'FragmentMaintain' * *没有列在你的堆栈跟踪中。您需要发布导致问题的代码。 – jww 2014-10-10 04:33:16

试试这个办法，希望这将帮助你解决你的问题。

ListAdapter adapter = new SimpleAdapter(getActivity(), oslist,R.layout.list_maintain,new String[] {TAG_MID,TAG_PID,TAG_STATUS,TAG_DESCRIPTION,TAG_NOTE}, new int[] { R.id.mid,R.id.pid, R.id.status, R.id.description, R.id.note});

你缺少在适配器中初始化字符串数组传递TAG_DESCRIPTION。

来源

2014-10-10 04:49:29