我正在开发一个Kotlin多平台应用程序,我想在我的模型类中使用@Parcelize注释。但是在Kotlin插件中,@Parcelize注释,在我使用的kotlin版本中是在android.extensions插件中,它适用于androidApp模块。
关于我的build.gradle.kts(androidApp)
plugins {
id("com.android.application")
kotlin("android")
kotlin("android.extensions")
kotlin("kapt")
id("kotlinx-serialization")
id("androidx.navigation.safeargs.kotlin")
}
android {
compileSdkVersion(Versions.compileSdk)
compileOptions{
sourceCompatibility = org.gradle.api.JavaVersion.VERSION_1_8
targetCompatibility = org.gradle.api.JavaVersion.VERSION_1_8
}
kotlinOptions{
jvmTarget = JavaVersion.VERSION_1_8.toString()
}
kapt{
generateStubs = true
correctErrorTypes = true
}
androidExtensions{
isExperimental = true
}
buildFeatures{
dataBinding = true
viewBinding = true
}
defaultConfig {
applicationId = "com.jshvarts.kmp.android"
minSdkVersion(Versions.minSdk)
targetSdkVersion(Versions.targetSdk)
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
getByName("release") {
isMinifyEnabled = false
proguardFiles(getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro")
}
}
packagingOptions {
exclude("META-INF/*.kotlin_module")
}
}
dependencies {
implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.jar"))))
implementation(kotlin("stdlib-jdk8", Versions.kotlin))
implementation(Coroutines.android)
implementation(AndroidX.appCompat)
implementation(AndroidX.constraintLayout)
implementation(AndroidX.recyclerView)
implementation(AndroidX.lifecycleExtensions)
implementation(AndroidX.lifecycleViewModelKtx)
implementation(material)
implementation(AndroidX.swipeToRefreshLayout)
implementation(timber)
implementation(picasso)
implementation(AndroidX.navigation)
implementation(AndroidX.navigation_ui)
implementation(Serialization.runtime)
//implementation(Serialization.core)
//Dependency for googlePay
implementation("com.google.android.gms:play-services-wallet:16.0.1")
kapt(databinding)
implementation(glide){
exclude( "com.android.support")
}
kapt(glide)
implementation(project(":shared"))
}
Build.gradle.kts(共享)
plugins {
id("com.android.library")
kotlin("multiplatform")
kotlin("plugin.serialization")
//id("kotlinx-serialization")
id("org.jetbrains.kotlin.native.cocoapods")
id("com.squareup.sqldelight")
}
// CocoaPods requires the podspec to have a version.
version = "1.0"
android {
compileSdkVersion(Versions.compileSdk)
buildToolsVersion(Versions.androidBuildTools)
defaultConfig {
minSdkVersion(Versions.minSdk)
targetSdkVersion(Versions.targetSdk)
versionCode = 1
versionName = "1.0"
}
}
version = "1.0"
dependencies {
implementation("com.google.firebase:firebase-crashlytics-buildtools:2.8.1")
implementation(project(mapOf("path" to ":androidApp")))
}
kotlin {
targets {
val sdkName: String? = System.getenv("SDK_NAME")
val isiOSDevice = sdkName.orEmpty().startsWith("iphoneos")
if (isiOSDevice) {
iosArm64("iOS")
} else {
iosX64("iOS")
}
android()
}
cocoapods {
// Configure fields required by CocoaPods.
summary = "Description for a Kotlin/Native module"
homepage = "Link to a Kotlin/Native module homepage"
}
sourceSets {
all {
languageSettings.apply {
useExperimentalAnnotation("kotlinx.coroutines.ExperimentalCoroutinesApi")
}
}
val commonMain by getting {
dependencies {
implementation(kotlin("stdlib-common"))
implementation(Coroutines.Core.core)
implementation(Ktor.Core.common)
implementation(Ktor.Json.common)
implementation(Ktor.Logging.common)
implementation(Ktor.Serialization.common)
implementation(SqlDelight.runtime)
implementation(Serialization.runtime)
//implementation(project(":androidApp"))
//implementation("org.jetbrains.kotlin:kotlin-reflect:${Versions.kotlin}")
//implementation("org.jetbrains.kotlin:kotlin-reflect:${Versions.kotlin}")
//implementation ("org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.1")
}
}
val commonTest by getting {
dependencies {
implementation(Ktor.Mock.jvm)
}
}
val androidMain by getting {
dependencies {
implementation(kotlin("stdlib"))
implementation(Coroutines.Core.core)
implementation(Ktor.android)
implementation(Ktor.Core.jvm)
implementation(Ktor.Json.jvm)
implementation(Ktor.Logging.jvm)
implementation(Ktor.Logging.slf4j)
implementation(Ktor.Mock.jvm)
implementation(Ktor.Serialization.jvm)
implementation(Serialization.runtime)
//implementation(Serialization.core)
implementation(SqlDelight.android)
}
}
val androidTest by getting {
dependencies {
implementation(kotlin("test-junit"))
implementation(Ktor.Mock.common)
}
}
val iOSMain by getting {
dependencies {
implementation(Coroutines.Core.core)
implementation(Ktor.ios)
implementation(Ktor.Core.common)
implementation(Ktor.Json.common)
implementation(Ktor.Logging.common)
implementation(Ktor.Serialization.jvm)
// implementation(Serialization.runtimeNative)
implementation(SqlDelight.runtime)
implementation(Ktor.Mock.common)
}
}
val iOSTest by getting {
dependencies {
implementation(Ktor.Mock.native)
}
}
}
}
sqldelight {
database("PetsDatabase") {
packageName = "com.jshvarts.kmp.db"
sourceFolders = listOf("sqldelight")
}
}
还有我的build.gradle.kts项目
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
mavenCentral()
jcenter()
}
dependencies {
classpath("com.android.tools.build:gradle:4.0.0")
classpath(kotlin("gradle-plugin", version = Versions.kotlin))
classpath(kotlin("serialization", version = Versions.kotlin))
classpath("com.squareup.sqldelight:gradle-plugin:${Versions.sqldelight}")
classpath("com.github.ben-manes:gradle-versions-plugin:0.28.0")
classpath ("androidx.navigation:navigation-safe-args-gradle-plugin:${Versions.navigation}")
classpath ("org.jetbrains.kotlin:kotlin-android-extensions-runtime:${Versions.kotlin}")
}
}
allprojects {
repositories {
google()
mavenCentral()
jcenter()
}
}
//TODO("Probar bajando a kotlin version 1.3.72, y habilitando el android-extensions")
plugins {
//kotlin("jvm") version "${Versions.kotlin}"
id("org.jlleitschuh.gradle.ktlint") version "9.2.1"
id ("com.github.ben-manes.versions") version "0.28.0"
//kotlin("android") version "${Versions.kotlin}" apply false
//id("org.jetbrains.kotlin.plugin.parcelize") version "${Versions.kotlin}"
}
apply(from = "quality/lint.gradle")
因此,我在androidApp和共享模块中创建了一个expect和实际的Parcelable和Parcelize类:
androidApp
actual typealias Parcelable = android.os.Parcelable
actual typealias Parcelize = kotlinx.android.parcel.Parcelize
以及共享模块中的
// Common Code
expect interface Parcelable
@UseExperimental(ExperimentalMultiplatform::class)
@OptionalExpectation
@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.BINARY)
expect annotation class Parcelize()
因此,在这些类中,I接收到以下错误:
In Parcelable(shared)
Expected interface 'Parcelable' has no actual declaration in module KmpMVVMGooglePay.shared for JVM
Expected interface 'Parcelable' has no actual declaration in module KmpMVVMGooglePay.shared.iOSMain for Native
在android类中:
Actual typealias 'Parcelable' has no corresponding expected declaration
Actual typealias 'Parcelize' has no corresponding expected declaration
那么,对于实际/预期关键字行为,我遗漏了什么呢?
谢谢你提前提供帮助!
发布于 2022-03-04 16:15:12
您需要一个空的actual interface
用于iOS中的Parcelable。我不知道它为什么会给JVM错误,因为它不在目标中。我介绍了如何在公共代码Parcelable
中使用@Parcelize
和这里。
发布于 2022-10-13 03:39:03
这些片段向您展示了如何在KMM项目中为任何类型的类(包括原语)使用Android。它向我们展示了注解、接口、泛型、对象、@TypeParceler
、Parceler
、Parcelable
、Parcelize
,以及如何为通用代码、iOS和Android实现每个平台。
这是必要的代码,以防止崩溃时,Android应用程序的背景和Parceler是自动运行保存状态。
在本例中,我希望是LocalDateTime的非本地parcelable类作为非本地parcelable类的示例。您可以使用任何类,只需更改实现即可。
在build.gradle.kts
(:shared)中
plugins {
kotlin("multiplatform")
id("com.android.library")
id("kotlin-parcelize") // add this
id("kotlin-kapt") // add this
// ...rest of defintions...
}
kotlin {
android()
listOf(
iosX64(),
iosArm64(),
iosSimulatorArm64()
).forEach {
it.binaries.framework {
baseName = "shared"
}
}
sourceSets {
val commonMain by getting {
dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.0") // LocalDateTime library written in Kotlin (can't use java libraries)
}
}
// ...rest of definitions...
}
// ...rest of definitions...
}
在commonMain/.../Platform.kt
中
import kotlinx.datetime.LocalDateTime
// For Android @Parcelize
@OptIn(ExperimentalMultiplatform::class)
@OptionalExpectation
@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.BINARY)
expect annotation class CommonParcelize()
// For Android Parcelable
expect interface CommonParcelable
// For Android @TypeParceler
@OptIn(ExperimentalMultiplatform::class)
@OptionalExpectation
@Retention(AnnotationRetention.SOURCE)
@Repeatable
@Target(AnnotationTarget.CLASS, AnnotationTarget.PROPERTY)
expect annotation class CommonTypeParceler<T, P : CommonParceler<in T>>()
// For Android Parceler
expect interface CommonParceler<T>
// For Android @TypeParceler to convert LocalDateTime to Parcel
expect object LocalDateTimeParceler: CommonParceler<LocalDateTime>
在androidMain/.../Platform.kt
中
重要注意事项:必须导入kotlinx.parcelize.*
而不是 kotlinx.android.parcel.*
import android.os.Parcel
import android.os.Parcelable
import kotlinx.datetime.LocalDateTime
import kotlinx.datetime.toLocalDateTime
import kotlinx.parcelize.Parceler
import kotlinx.parcelize.Parcelize
import kotlinx.parcelize.TypeParceler
actual typealias CommonParcelize = Parcelize
actual typealias CommonParcelable = Parcelable
actual typealias CommonParceler<T> = Parceler<T>
actual typealias CommonTypeParceler<T,P> = TypeParceler<T, P>
actual object LocalDateTimeParceler : Parceler<LocalDateTime> {
override fun create(parcel: Parcel): LocalDateTime {
val date = parcel.readString()
return date?.toLocalDateTime()
?: LocalDateTime(0, 0, 0, 0, 0)
}
override fun LocalDateTime.write(parcel: Parcel, flags: Int) {
parcel.writeString(this.toString())
}
}
在iosMain/.../Platform.kt
中
import kotlinx.datetime.LocalDateTime
// Note: no need to define CommonParcelize here (bc its @OptionalExpectation)
actual interface CommonParcelable // not used on iOS
// Note: no need to define CommonTypeParceler<T,P : CommonParceler<in T>> here (bc its @OptionalExpectation)
actual interface CommonParceler<T> // not used on iOS
actual object LocalDateTimeParceler : CommonParceler<LocalDateTime> // not used on iOS
在../shared/commonMain/.../domain/note/Note.kt
中
这是您的域类,将由iOS和Android共享。
import kotlinx.datetime.LocalDateTime
@CommonParcelize
data class Note(
val id: Long?,
val title: String,
val content: String,
val colorHex: Long,
@CommonTypeParceler<LocalDateTime, LocalDateTimeParceler>()
val created: LocalDateTime,
): CommonParcelable {
companion object {
private val colors = listOf(RedOrangeHex, RedPinkHex, LightGreenHex, BabyBlueHex, VioletHex)
fun generateRandomColor() = colors.random()
}
}
我试图实现@RawValue
,但是它没有文档化(AFAIK),上面使用@TypeParcelers
的方法对于任何特定的类都很有效。我把它留给别人做练习!
https://stackoverflow.com/questions/70916976
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