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.net/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.net/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
@Entity
data 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: Box<Note>
private lateinit var noteQuery: Query<Note>
noteBox = (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<Note> = 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