Flutter 混合开发 - aar打包-编程知识

Flutter 混合开发 - aar打包

背景

项目接入 Flutter 后有两种方式，一种是 module 引入开发，一种是 aar 依赖开发。当前项目中在 Debug 阶段为了方便调试采用 module 开发，在发版时（即 Release 阶段）采用 aar 依赖引入。为了配合这种模式就需要在 release 阶段将 aar 上传至公司 maven 仓库中，但目前 Flutter 仅提供本地发布，所以下面基于官方脚本修改，实现上传至公司 maven。

打包脚本

修改自: Flutter 仓库中的 aar_init_script.gradle。路径 ->flutter/packages/flutter_tools/gradle/aar_init_script.gradle


import java.nio.file.Paths
import org.gradle.api.Project
import org.gradle.api.artifacts.Configuration
import org.gradle.api.publish.maven.MavenPublicationvoid configureProject(Project project, String outputDir) {if (!project.hasProperty("android")) {throw new GradleException("Android property not found.")}if (!project.android.hasProperty("libraryVariants")) {throw new GradleException("Can't generate AAR on a non Android library project.");}project.version = project.version.replace("-SNAPSHOT", "")if (project.hasProperty("buildNumber")) {project.version = project.property("buildNumber")}project.components.forEach { component ->if (component.name == "release") {println ("component = " + component.name )addAarTask(project, component)}}project.publishing {repositories {// 在这里设置为自己的 maven 参考地址 ！！！maven {url = uri("file://${outputDir}/outputs/repo")}}}if (!project.property("is-plugin").toBoolean()) {return}String storageUrl = System.getenv('FLUTTER_STORAGE_BASE_URL') ?: "https://storage.googleapis.com"project.repositories {maven {url "$storageUrl/download.flutter.io"}}String engineVersion = Paths.get(getFlutterRoot(project), "bin", "internal", "engine.version").toFile().text.trim()project.dependencies {compileOnly ("io.flutter:flutter_embedding_release:1.0.0-$engineVersion") {transitive = false}}
}void configurePlugin(Project project, String outputDir) {if (!project.hasProperty("android")) {return}configureProject(project, outputDir)
}void addAarTask(Project project, component) {String variantName = component.name.capitalize()String taskName = "assembleAar$variantName"project.tasks.create(name: taskName) {if (!project.gradle.startParameter.taskNames.contains(taskName)) {return}project.publishing.publications.create(component.name, MavenPublication) { pub ->groupId = "${pub.groupId}"artifactId = "${pub.artifactId}_${pub.name}"version = "${pub.version}"from component}finalizedBy "publish"}
}allprojects {apply plugin: "maven-publish"
}projectsEvaluated {Project moduleProject = rootProject.subprojects.find { it.name == "flutter" }assert moduleProject != nullassert moduleProject.hasProperty("output-dir")//打包dart代码configureProject(moduleProject, moduleProject.property("output-dir"))//打包三方依赖Set<Project> modulePlugins = rootProject.subprojects.findAll {it.name != "flutter" && it.name != "app"}modulePlugins.each { pluginProject ->configurePlugin(pluginProject, moduleProject.property("output-dir"))moduleProject.android.libraryVariants.all { variant ->String variantName = variant.name.capitalize()if (variantName == "release"){println ("moduleProject = " + moduleProject.name + " & variantName = " + variantName + " & pluginProject = " + pluginProject.name)Task moduleAssembleAarTask = moduleProject.tasks.findByPath("assembleAar$variantName")Task pluginAssembleAarTask = pluginProject.tasks.findByPath("assembleAar$variantName")if (moduleAssembleAarTask != null && pluginAssembleAarTask != null ){moduleAssembleAarTask.dependsOn(pluginAssembleAarTask)}}}}
}

打包指令


# 根据需要修改 “VERSION”（即 aar 版本号）
./gradlew -I="$PROJECT_PATH"/publishAar.gradle -Pflutter-root="${HOME}"/flutter -Poutput-dir="$PROJECT_PATH"/build/host -Pis-plugin=false -PbuildNumber="$VERSION" --full-stacktrace --info -Pverbose=true -Ptarget=lib/main.dart -Pdart-obfuscation=false -Ptrack-widget-creation=true -Ptree-shake-icons=false -Ptarget-platform=android-arm64 assembleAarRelease