背景

公司，想优化掉，在app中，以webview方式，加载游戏的方式。以安卓项目为例，改成：游戏项目导出安卓工程，可直接使用的aar资源。

第一步：cocos项目，构建安卓工程

安装配置原生开发环境，可以参考官方文档：https://docs.cocos.com/creator/2.4/manual/zh/publish/setup-native-development.html
备注：本人使用cocoscreator版本为：2.4.11版本，在构建发布页面，选择Android选项，构建成功后，不要点击后面的编译、运行按钮。直接用androidstudio打开构建好的安卓工程即可。

第二步：构建成功的安卓工程，导出aar资源

1、将CocosCreator导出的安卓工程，用AndroidStudio打开，并修改JDK版本。

2、将依赖库工程libcocos2dx打包成aar

3、修改instantapp工程下的build.gradle、AndroidManifest.xml文件

3.1、build.gradle文件修改后如下：

import org.apache.tools.ant.taskdefs.condition.Os
//apply plugin: 'com.android.application'
// 将工程作为library
apply plugin: 'com.android.library'
android {
    
    compileSdkVersion PROP_COMPILE_SDK_VERSION.toInteger()
    buildToolsVersion PROP_BUILD_TOOLS_VERSION

    defaultConfig {
        minSdkVersion PROP_MIN_SDK_VERSION
        targetSdkVersion PROP_TARGET_SDK_VERSION
        versionCode 1
        versionName "1.0"

        externalNativeBuild {
            ndkBuild {
                if (!project.hasProperty("PROP_NDK_MODE") || PROP_NDK_MODE.compareTo('none') != 0) {
                    // skip the NDK Build step if PROP_NDK_MODE is none
                    targets 'cocos2djs'
                    arguments 'NDK_TOOLCHAIN_VERSION=clang'

                    def module_paths = [project.file("/Applications/Creator/2.4.11/CocosCreator.app/Contents/Resources/cocos2d-x"),
                                        project.file("/Applications/Creator/2.4.11/CocosCreator.app/Contents/Resources/cocos2d-x/cocos"),
                                        project.file("/Applications/Creator/2.4.11/CocosCreator.app/Contents/Resources/cocos2d-x/external")]
                    if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                        arguments 'NDK_MODULE_PATH=' + module_paths.join(";")
                    }
                    else {
                        arguments 'NDK_MODULE_PATH=' + module_paths.join(':')
                    }

                    arguments '-j' + Runtime.runtime.availableProcessors()
                }
            }
            ndk {
                abiFilters PROP_APP_ABI.split(':')
            }
        }
    }

    sourceSets.main {
        java.srcDirs "../src", "src"
        res.srcDirs "../res", 'res'
        jniLibs.srcDirs "../libs", 'libs'
        manifest.srcFile "AndroidManifest.xml"
    }

    externalNativeBuild {
        ndkBuild {
            if (!project.hasProperty("PROP_NDK_MODE") || PROP_NDK_MODE.compareTo('none') != 0) {
                // skip the NDK Build step if PROP_NDK_MODE is none
                path "jni/Android.mk"
            }
        }
    }

    signingConfigs {

        release {
            if (project.hasProperty("RELEASE_STORE_FILE")) {
                storeFile file(RELEASE_STORE_FILE)
                storePassword RELEASE_STORE_PASSWORD
                keyAlias RELEASE_KEY_ALIAS
                keyPassword RELEASE_KEY_PASSWORD
            }
        }
    }

    buildTypes {
        release {
            debuggable false
            jniDebuggable false
            renderscriptDebuggable false
            minifyEnabled true
            //作为library不能设置这个参数
            //shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            if (project.hasProperty("RELEASE_STORE_FILE")) {
                signingConfig signingConfigs.release
            }

            externalNativeBuild {
                ndkBuild {
                    arguments 'NDK_DEBUG=0'
                }
            }
        }

        debug {
            debuggable true
            jniDebuggable true
            renderscriptDebuggable true
            externalNativeBuild {
                ndkBuild {
                    arguments 'NDK_DEBUG=1'
                }
            }
        }
    }

}
//将applicationVariants，改成libraryVariants
android.libraryVariants.all { variant ->
    // delete previous files first
    delete "${buildDir}/intermediates/merged_assets/"

    variant.mergeAssets.doLast {
        def sourceDir = "${buildDir}/../../../../.."

        copy {
            from "${sourceDir}"
            include "assets/**"
            include "src/**"
            include "jsb-adapter/**"
            into outputDir
        }

        copy {
            from "${sourceDir}/main.js"
            from "${sourceDir}/project.json"
            into outputDir
        }
    }
}

dependencies {
    //注释掉这些依赖，不然打成aar后会运行会报冲突
//    implementation fileTree(dir: '../libs', include: ['*.jar','*.aar'])
//    implementation fileTree(dir: 'libs', include: ['*.jar','*.aar'])
//    implementation fileTree(dir: "/Applications/Creator/2.4.11/CocosCreator.app/Contents/Resources/cocos2d-x/cocos/platform/android/java/libs", include: ['*.jar'])
    implementation project(':libcocos2dx')
}

3.2、AndroidManifest.xml文件修改如下：

3.3、同步gradle，然后将工程打包成aar。截图如下：

第三步：其他项目组安卓工程，导入游戏aar资源，并加载呈现游戏

至此，结束。