android.database.Cursor错误！

Question

 public class DLXMainActivity extends AppCompatActivity
{
    DatabaseHelper databaseHelper;
    MyAdapter adapter;
    private static Toolbar toolbar;
    public static EditText dlx_Input1,dlx_Input2;
    public static String datetime;
    public static TextView mTitle,mContent,mTime;
    ListView listView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dlx_task3_dlxmain);
        findViews();
        setSupportActionBar(toolbar);
        databaseHelper = new DatabaseHelper(
                this, databaseHelper.DATABASE_NAME, null, databaseHelper.DATABASE_VERSION);
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
        Map<String, Object> map;
        databaseHelper = new DatabaseHelper(this,DatabaseHelper.DATABASE_NAME,null,1);
        for(int i=0;i<10;i++)
        {
            map = new HashMap<String, Object>();
            String title = null,content = null,time = null;
            while(databaseHelper.Querytitle().moveToNext()){

                title = databaseHelper.Querytitle().getString(databaseHelper.Querytitle().getColumnIndex("title"));
                content = databaseHelper.Querytitle().getString(databaseHelper.Querytitle().getColumnIndex("content"));
                time = databaseHelper.Querytitle().getString(databaseHelper.Querytitle().getColumnIndex("time"));
            }
            map.put("title",String.valueOf(title));
            map.put("content", String.valueOf(content));
            map.put("time",String.valueOf(time));
            list.add(map);
        }
        adapter = new MyAdapter(this,list);
        listView.setAdapter(adapter);
    }

完全新手！想把数据库里的内容放到页面上，错误Caused by: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 8,求大家指点！！！！！

Answer 1

做android 开发的经常会遇android.database.CursorWindowAllocationException这样子的错误;一般出现这样的错误，大部分原因是因为没有关闭cursor，或者是因为Cursor使用不当，之前我的遇到这样的代码：
ForecastData situation = null;
................
Cursor cursor......
答案就在这里：android开发数据库Cursor 错误android.database.CursorWindowAllocationException
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