Android|Android 关于数据库GreenDao导入到AndroidStudio中 Android关于数据库GreenDao导入到

【Android|Android 关于数据库GreenDao导入到AndroidStudio中】1.在项目根目录 build.gradle 添加如下代码并执行同步操作

// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript { repositories { google() jcenter() mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:3.3.2' classpath 'org.greenrobot:greendao-gradle-plugin:3.2.0'// NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } }allprojects { repositories { google() jcenter() mavenCentral() maven { url 'https://jitpack.io' } } }task clean(type: Delete) { delete rootProject.buildDir }

2.在app目录 build.gradle 添加apply plugin: ‘org.greenrobot.greendao’，并添加依赖
implementation ‘org.greenrobot:greendao:3.2.2’，同步一下，如下

apply plugin: 'com.android.application' apply plugin: 'org.greenrobot.greendao'

implementation 'org.greenrobot:greendao:3.2.2'

3.在app目录 build.gradle android下添加

greendao { //数据库的schema版本，也可以理解为数据库版本号 schemaVersion 1 //设置DaoMaster、DaoSession、Dao包名，也就是要放置这些类的包的全路径。 daoPackage '你的包名.dao' //设置DaoMaster、DaoSession、Dao目录 targetGenDir 'src/main/java' }

4.新建一个实体类User,如下

@Entity public class User { @Id(autoincrement = true) private Long id; //特别说明，必须是Long private String name; private String age; }

点击build–>>>Make Project,会看到User类中自动生成的代码，如下

@Entity public class User { @Id(autoincrement = true) private Long id; //特别说明，必须是Long private String name; private String age; @Generated(hash = 1666193281) public User(Long id, String name, String age) { this.id = id; this.name = name; this.age = age; } @Generated(hash = 586692638) public User() { } public Long getId() { return this.id; } public void setId(Long id) { this.id = id; } public String getName() { return this.name; } public void setName(String name) { this.name = name; } public String getAge() { return this.age; } public void setAge(String age) { this.age = age; } }

并在项目中自动生成了dao,如下