Android-Lesson-3-源码

上传者: 42131618 | 上传时间: 2021-06-17 13:25:48 | 文件大小: 122KB | 文件类型: ZIP
Hack101 - Android:第 3 课 保存数据 在本教程中,我们将使用待办事项列表从上次中断的地方继续并添加保存的数据。 如果您还记得,我们的应用程序到目前为止只是一个待办事项列表,但列表中的项目始终相同,用户无法添加到其中。 为了保存数据,我们将在手机上创建一个数据库。 在我们将此数据库添加到我们的应用程序之前,我们需要学习如何使用数据库。 SQL SQL(结构化查询语言)是一种用于处理存储在数据库中的数据的语言。 在我们的数据库中,所有内容都存储在表中。 这是一个示例表: 狗品种 平均身高 狗 ID 吉娃娃 18 00000000000 边境牧羊犬 50 00000000001 松狮 52 00000000002 法国斗牛犬 30 00000000003 大丹犬 73 00000000004 该表存储了狗的品种列表、它们的 ID 和它们的平均高度(

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