Flutter Module 打包aar

Flutter 版本1.17.1

Google 方式打包aar

flutter build aar

android {
  // ...
}

repositories {
  maven {
    url 'some/path/my_flutter/build/host/outputs/repo'
    // This is relative to the location of the build.gradle file
    // if using a relative path.
  }
  maven {
    url 'https://storage.googleapis.com/download.flutter.io'
  }
}

dependencies {
  // ...
  debugImplementation 'com.example.flutter_module:flutter_debug:1.0'
  profileImplementation 'com.example.flutter_module:flutter_profile:1.0'
  releaseImplementation 'com.example.flutter_module:flutter_release:1.0'
}

这种方式打出来的aar包并没有把第三方插件打入aar中,只是将第三方插件依赖到本地的仓库,所以不太适用共同开发

Fat-aar 插件打包

使用Fat-aar插件可以将第三方的插件和flutter 相关的东西合并到一个aar中

集成fat-aar

• 根目录gradle添加依赖

  dependencies {
      classpath "com.kezong:fat-aar:1.2.15"
  }
  

• app目录下配置

  //打包时设置为Library
  boolean isAarLibrary = true
  
  def localProperties = new Properties()
  def localPropertiesFile = rootProject.file('local.properties')
  if (localPropertiesFile.exists()) {
      localPropertiesFile.withReader('UTF-8') { reader ->
          localProperties.load(reader)
      }
  }
  
  def flutterRoot = localProperties.getProperty('flutter.sdk')
  if (flutterRoot == null) {
      throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
  }
  
  def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
  if (flutterVersionCode == null) {
      flutterVersionCode = '1'
  }
  
  def flutterVersionName = localProperties.getProperty('flutter.versionName')
  if (flutterVersionName == null) {
      flutterVersionName = '1.0'
  }
  //新增:当需要打包aar 时,修改项目为library模式
  if (isAarLibrary) {
      apply plugin: 'com.android.library'
  } else {
      apply plugin: 'com.android.application'
  }
  apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
  
  //新增:引入fat-aar
  if (isAarLibrary) {
      apply plugin: 'com.kezong.fat-aar'
  }
  
  
  
  defaultConfig {
          // 注意Library方式不需要applicationId
          if (!isAarLibrary) {
              applicationId "com.ecook.zuofan_flutter"
          }
          minSdkVersion 16
          targetSdkVersion 28
          versionCode flutterVersionCode.toInteger()
          versionName flutterVersionName
      }
  
  
  

​

• 使用fat-aar

  注意： io.flutter:flutter_embedding_release 版本号可以从本地 .gradle/caches/modules-2/files-2.1/io.flutter 目录下获取

  dependencies {
      if (isAarLibrary) {
              embed "io.flutter:flutter_embedding_release:1.0.0-6bc433c6b6b5b98dcf4cc11aff31cdee90849f32"
          // 添加各个 cpu 版本 flutter.so
  //        embed "io.flutter:arm64_v8a_debug:1.0.0-eed171ff3538aa44f061f3768eec3a5908e8e852"
  //        embed "io.flutter:armeabi_v7a_debug:1.0.0-eed171ff3538aa44f061f3768eec3a5908e8e852"
          embed "io.flutter:arm64_v8a_release:1.0.0-6bc433c6b6b5b98dcf4cc11aff31cdee90849f32"
          embed "io.flutter:armeabi_v7a_release:1.0.0-6bc433c6b6b5b98dcf4cc11aff31cdee90849f32"
  
          //添加fat-aar处理flutter打包成aar中三方依赖
          def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
          def plugins = new Properties()
          def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
          if (pluginsFile.exists()) {
              pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
          }
          plugins.each { name, _ ->
  
              embed project(path: ":$name", configuration: 'default')
  
          }
      }
  }
  

• 修改.android/app/AndroidManifest.xml 文件

  我们的项目时Flutter项目 所以打包成aar 需要注释掉无用的标签 只保留application标签

  <manifest xmlns:android = "http://schemas.android.com/apk/res/android"
    package = "com.flutter.flutter_aar_demo"
    xmlns:tools="http://schemas.android.com/tools">
    //只保留application标签
    <application>  
    //这个需要保留
     <meta-data
        android:name="flutterEmbedding"
        android:value="2"/>
    </application>
  </manifest>
  

• 编译打包

  在 android 目录下面打包 执行 gradlew assembleRelease

  等待即可获取aar