浅谈Android数据库DBFlow

        maven { url "https://www.jitpack.io" }

classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

apply plugin: 'com.neenbedankt.android-apt'

def dbflow_version = "4.0.2"

apt "com.github.Raizlabs.DBFlow:dbflow-processor:${dbflow_version}"
compile "com.github.Raizlabs.DBFlow:dbflow-core:${dbflow_version}"
compile "com.github.Raizlabs.DBFlow:dbflow:${dbflow_version}"
// sql-cipher database encyrption (optional)
compile "com.github.Raizlabs.DBFlow:dbflow-sqlcipher:${dbflow_version}"

public class XApplication extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        FlowManager.init(this);
    }
}

/**
* @author xqx
* @email djlxqx@163.com
* blog:http://www.cnblogs.com/xqxacm/
* createAt 2017/11/22
* description: 数据库类
*/

@Database(name = SchoolDatabase.Name , version = SchoolDatabase.VERSION)
public class SchoolDatabase {
    static final String Name = "SchoolDB"; //数据库名
    static final int VERSION = 1;          //数据库版本号
}

/**
* @author xqx
* @email djlxqx@163.com
* blog:http://www.cnblogs.com/xqxacm/
* createAt 2017/11/22
* description: 学生表  属于SchoolDatabase数据库的
*/

@Table(database = SchoolDatabase.class)
public class Student extends BaseModel{
    //主键 一个表必须有至少一个主键
    // (autoincrement = true) 表示该字段是自增的，可以不设置 ，默认false
    @PrimaryKey(autoincrement = true)
    long id ;

    // 名字
    @Column
    String name;

    // 年龄
    @Column
    int age;


    //---------------------以下为可有可无的---------------//
　　
　　//注意 一定要有一个无参的构造方法

　　public Student() {
　　}

    /**
     * 构造方法 看情况添加 可不加
     * @param name
     * @param age
     */
    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    //Getter 和 Setter 方法，自己添加、可有可无
    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

        Student student = new Student();
        student.setName("XQX");
        student.setAge(18);
        student.save();   //保存

        student.update(); // 更改
        student.delete();  //删除
        student.insert();  // 添加

   /**
     * 查询年龄为100的学生记录
     * @param age
     * @return
     */
    public Student findSingleStudent(int age){
        Student student = SQLite.select().from(Student.class).where(Student_Table.age.is(100)).querySingle();
        return student;
    }

    public List getAllStudents(){
        List<Student> students = SQLite.select().from(Student.class).queryList();
        return students;
    }

　　　　for (int i = 0; i < 10; i++) {
            addStudent("学生："+i , i);
        }

        List<Student> students = SQLite.select().from(Student.class).queryList();

        for (int i = 0; i < 10; i++) {
            Log.i("xqxinfo","学生表中的所有记录:"+students.get(i).toString());
        }