说明下面程序片断功能。 dbHelper = new MyDatabaseHelper(this, "BookStore.db", null, 2); ...... Button addData = (Button) findViewById(R.id.add_data); addData.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { SQLiteDatabase db = dbHelper.getWritableDatabase(); ContentValues values = new ContentValues(); values.put("name", "The Da Vinci Code"); values.put("author", "Dan Brown"); values.put("pages", 454); values.put("price", 16.96); db.insert("Book", null, values); values.clear(); values.put("name", "The Lost Symbol"); values.put("author", "Dan Brown"); values.put("pages", 510); values.put("price", 19.95); db.insert("Book", null, values); } });