step1：配置LitePal，在AndroidStudio上。

以你之姓@ 2023-02-18 14:03 5阅读 0赞

此项目参考郭霖《第一行代码》中使用LitePal操作数据库。

**step1：建好项目后先配置LitePal！！！（链接）**

[**step2：UI布局、创建和升级数据库、使用LitePal对数据进行增删查改操作**][step2_UI_LitePal]

## 建好项目后： ##

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## 1.编写app/build.gradle文件。 ##

在dependencies闭包中加入如下代码。

compile 'org.litepal.android:core:1.4.1'        //声明litepal该开源库

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70 1]

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## 2.在app/src/main下新建assets目录，并在此目录下新建litepal.xml。 ##

在建表（类）后，需将表加入到映射模型中，则要修改litepal.xml中的代码。

(以下则加入了表Book和表Category，这两行可以删除，后期根据自己的项目在将表加入映射关系。)  
**litepal.xml内容如下：**

<?xml version="1.0" encoding="utf-8" ?>
    <litepal>
        <dbname value="BookStore"></dbname>
    
        <version value="4"></version>
    
        <list>
            <mapping class="com.example.dn.library_management_zxy.Book"></mapping>
            <mapping class="com.example.dn.library_management_zxy.Category"></mapping>
        </list>
    </litepal>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70 2]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70 3]

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## 3.修改AndroidMainfest.xml代码。 ##

加入如下代码，在application块中：

android:name="org.litepal.LitePalApplication"

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70 4]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY2MDQ5Nw_size_16_color_FFFFFF_t_70 5]

[step2_UI_LitePal]: https://blog.csdn.net/weixin_43660497/article/details/106821569
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