sqlit导入外部数据库查找数据方法

在ddms界面把数据库文件*.db导入/data/data/包名/下,执行如下代码

		// TODO Auto-generated method stub
		db = SQLiteDatabase.openOrCreateDatabase(
				"/data/data/com.xunfang.demo_weather.db/chinacity.db", null);
		String string = etInput.getText().toString();
		System.out.println("输入数据为" + string);
		try {
			String sql = "Select WEATHER_ID from city_table where CITY=" + "\""
					+ string + "\"";
			Cursor cursor = db.rawQuery(sql, null);
			cursor.moveToFirst();
			System.out.println(cursor.getString(cursor
					.getColumnIndex("WEATHER_ID")));

		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.println("没有这个数据!");
		}