使用kotlin开发的仿EMUI备忘录，使用ObjectBox框架

使用kotlin开发的仿EMUI备忘录，使用ObjectBox框架

EasyNote

使用Kotlin开发的仿华为手机EMUI备忘录，数据本地存储使用ObjectBox

Kotlin-ObjectBox的使用

1、工程配置

buildscript { ext.kotlin_version = '1.1.3-2' ext.objectBoxVersion = "0.9.13" repositories { google() jcenter() maven { url "http://objectbox-/beta-repo/" } } dependencies { classpath 'com.android.tools.build:gradle:3.0.0-alpha9' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" classpath "io.objectbox:objectbox-gradle-plugin:$objectBoxVersion" // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files }}allprojects { repositories { google() jcenter() maven { url "http://objectbox-/beta-repo/" } }}

apply plugin: 'kotlin-kapt'apply plugin: 'io.objectbox'

implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"compile('org.jetbrains.anko:anko:0.10.0') { exclude group: 'com.google.android', module: 'android'}compile "io.objectbox:objectbox-android:$objectBoxVersion"compile "io.objectbox:objectbox-kotlin:$objectBoxVersion"kapt "io.objectbox:objectbox-processor:$objectBoxVersion"

2、配置KotlinBean--->make project

@Entitydata class Note( @Id var id: Long = 0, var type: String? = null, var content: String? = null, var date: Date? = null)

3、使用ObjectBox（基本使用）

class App : Application() { lateinit var boxStore: BoxStore private set override fun onCreate() { super.onCreate() instance = this boxStore = MyObjectBox.builder().androidContext(this).build() }}private lateinit var noteBox: Boxprivate lateinit var noteQuery: QuerynoteBox = (application as App).boxStore.boxFor(Note::class.java)notesQuery = noteBox.query().order(Note_.content).build()

增、改

private fun addNote() { val content = contentTv.text.toString() val note = Note(type = type, content = content, date = date) if (noteID != -1L) { //不传ID则ID自增，传入ID则为改 note.id = noteID } noteBox.put(note)}

删

noteBox.remove(note)

查

fun queryNotes() { //查询全部 val notes = noteQuery.find() mAdapter.setData(notes)}fun queryNotes(type: String) { //查询指定type val builder: QueryBuilder = noteBox.query() val notes = builder.equal(Note_.type, type).build().find() mAdapter.setData(notes)}

EasyNote预览

相关链接

1、GreenDao老东家的ObjectBox

2、Google 2017IO大会指定Android开发语言Kotlin

3、Anko是一个使开发Android应用更简单更快捷的库Anko

更新日志

1、升级objectBoxVersion

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