配置项目build.gradle文件

buildscript {
    dependencies {
        classpath "io.realm:realm-gradle-plugin:3.1.3"
    }
}

配置app模块build.gradle文件

apply plugin: 'realm-android'

初始化Realm

创建自定义Application

public class MyApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        Realm.init(this);
    }
}

并在manifest中设置

<application
        android:name=".MainApplication"
        ...
        >

创建Realm对象

package me.zongren.realmdemo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import io.realm.Realm;
import io.realm.RealmConfiguration;

public class MainActivity extends AppCompatActivity {
    private Realm realm;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RealmConfiguration configuration = new RealmConfiguration.Builder().build();
        Realm.deleteRealm(configuration);
        realm = Realm.getInstance(configuration);
    }
}

关闭Realm

在onDestroy方法中移除Notification Listener，并关闭realm

@Override
protected void onDestroy() {
    realm.removeAllChangeListeners();
    realm.close();
    super.onDestroy();
}

官方文档

Realm

Demo

A demo of realm in android:GitHub