数据库的创建

public class SQLiteHopen extends SQLiteOpenHelper{    public SQLiteHopen(Context context) {        super(context, "student.db", null, 1);    }    @Override    public void onCreate(SQLiteDatabase sqLiteDatabase) {        sqLiteDatabase.execSQL("create table if not exists student(_di integer primary key autoincrement,name text,balance text)");        ContentValues values = new ContentValues();        values.put("name","赵栋亮");        values.put("balance","1000");        sqLiteDatabase.insert("student",null,values);        values.clear();    }    @Override    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {    }}