只有1行插入表（SQLite / Android）

Question

我一直在尝试创建一个SQLite数据库。但是只添加了一行。 （cursor.getCount（）给出1）。任何人都可以告诉我我的代码有什么问题。

class Dbhelper extends SQLiteOpenHelper{

Dbhelper(Context context)
{
    super(context,"database00",null,1);
}
@Override
public void onCreate(SQLiteDatabase db)
{
    db.execSQL("CREATE TABLE TABLE00 (_id INTEGER PRIMARY KEY AUTOINCREMENT,"
                                       + "DISPLAY TEXT);");
    insertD(db,"a");
    insertD(db,"b");
    insertD(db,"c");

}
@Override
public void onUpgrade(SQLiteDatabase db,int oldVersion,int newVersion) {}

private static void insertD(SQLiteDatabase db,String display)
{
    ContentValues d=new ContentValues();
    d.put("DISPLAY",display);
    db.insert("TABLE00", null, d);
}}

正在访问此信息的代码：

SQLiteOpenHelper Dbhelper = new Dbhelper(this); 
SQLiteDatabase db = Dbhelper.getReadableDatabase(); 
Cursor cursor=db.rawQuery("select * from TABLE00",null); 
cursor.moveToFirst(); 
int msg3 = cursor.getCount(); 
TextView textView = (TextView) findViewById(R.id.textView3); textView.setText("No of rows:"+msg3); 
cursor.close(); 
db.close();