java - Android 即时功能 : Is it something fundamentally flawed with this approach?

Question

在从 google gradle 插件 3.1.4 更新到现在最新的 3.2.1 后，我试图让我的应用程序重新构建，我认为我首先让我的 instantapp 工作的方法可能有问题，所以我发布这个问题是为了放弃或确认这一点，在这种情况下要求采用不同的方法。

简而言之，我的应用程序是一个在 Assets 文件夹中有很多图形的游戏。为了使 instantapp 符​​合 Google Play 施加的 10 MB 限制，我不得不删除一些我在 instant 版本中不需要的 Assets 以及分辨率更高的 Assets ，同时保留其余 Assets 。此外，instantapp 的代码与安装的代码略有不同，因此我重写了其中的一些方法和类。

最小的 com.android.instantapp 模块似乎不能包含 Assets 和代码，所以我创建了一个中间功能模块来代替它们。

因此，经过大量努力(主要是使用 firebase 和 com.google.gms.google-services 插件)，我想出了这种方法，该方法最终适用于 gradle 插件的 3.1.4 版 (com.android .tools.build:gradle:3.1.4)

唯一奇怪的是，我必须将标志“baseFeature”同时设置为 android_instant_feature 和 android_common 功能模块。但它奏效了，我终于可以发布我的游戏的即时版本，同时安装版本也继续构建得很好。

现在，只要我更新到 google gradle 插件的 3.2.1 版，即使我不做任何其他更改，问题也开始了。我在尝试构建项目时遇到了很多此类错误:

Unable to find a matching variant of project :android_common:
  - Variant 'debugApiElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
      - Found com.android.build.api.attributes.VariantAttr 'debug' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Aar'.
      - Found org.gradle.usage 'java-api' but wasn't required.
  - Variant 'debugFeatureApiElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
      - Found com.android.build.api.attributes.VariantAttr 'debugFeature' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Feature'.
      - Found org.gradle.usage 'java-api' but wasn't required.
  - Variant 'debugFeatureRuntimeElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
      - Found com.android.build.api.attributes.VariantAttr 'debugFeature' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Feature'.
      - Found org.gradle.usage 'java-runtime' but wasn't required.
  - Variant 'debugRuntimeElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
      - Found com.android.build.api.attributes.VariantAttr 'debug' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Aar'.
      - Found org.gradle.usage 'java-runtime' but wasn't required.
  - Variant 'releaseApiElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
      - Found com.android.build.api.attributes.VariantAttr 'release' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Aar'.
      - Found org.gradle.usage 'java-api' but wasn't required.
  - Variant 'releaseFeatureApiElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
      - Found com.android.build.api.attributes.VariantAttr 'releaseFeature' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Feature'.
      - Found org.gradle.usage 'java-api' but wasn't required.
  - Variant 'releaseFeatureRuntimeElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
      - Found com.android.build.api.attributes.VariantAttr 'releaseFeature' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Feature'.
      - Found org.gradle.usage 'java-runtime' but wasn't required.
  - Variant 'releaseRuntimeElements':
      - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
      - Found com.android.build.api.attributes.VariantAttr 'release' but wasn't required.
      - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Metadata' and found incompatible value 'Aar'.
      - Found org.gradle.usage 'java-runtime' but wasn't required.

在对 gradle 脚本进行一些调整后，包括从 android_instant_feature 模块中删除 baseFeature true 标志，我得到了一个更简短的错误，但我不能说我是否比以前更好。错误是这样的:

Expected configuration ':android_instant_feature:debugFeatureCompileClasspath' to contain exactly one file, however, it contains no files.

现在我被困在这里，不知道该做什么，也不知道下一步该去哪里，所以我想知道我的方法是否存在根本性的缺陷，因为我是在反复试验之后想出来的，然后我我不确定这是否合适，在这种情况下，我可以使用哪种其他方法来满足我的要求和来自 Google 的要求，无论它们是什么。

根据@TWL 的要求，这些是我的这些模块的 Gradle 文件。我已经用 com.myapp.id 替换了真实的应用程序 ID，其余的正是我所拥有的，包括很多我认为与此事无关的 libGDX 的东西，尽管我更愿意以准确性的名义将它留在那里:

android_common:

apply plugin: "com.android.feature"

configurations { natives }

android {
    baseFeature true
    compileSdkVersion 28
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
        }

        androidTest.setRoot('tests')
    }
    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        sourceSets {
            all {
                manifest.srcFile "AndroidManifest.xml"
            }
        }
        multiDexEnabled true
    }
    buildTypes {
        release {
            setMinifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    buildToolsVersion '28.0.2'
    lintOptions {
        abortOnError false
    }
    dexOptions {
        jumboMode true
    }
}

dependencies {
    application project(':android')
    implementation project(':core')
    api 'com.android.support:multidex:1.0.3'
    implementation "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
    implementation "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
    natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi"
    natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi-v7a"
    natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-arm64-v8a"
    natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86"
    natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86_64"
    implementation "com.android.billingclient:billing:$playBillingLibVersion"
    implementation "com.google.firebase:firebase-core:16.0.3"
    implementation "com.google.firebase:firebase-ads:15.0.1"

    implementation fileTree(include: ['*.jar'], dir: 'libs')
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.guava:guava:24.0-android'
}

task copyAndroidNatives() {
    file("libs/armeabi/").mkdirs();
    file("libs/armeabi-v7a/").mkdirs();
    file("libs/arm64-v8a/").mkdirs();
    file("libs/x86_64/").mkdirs();
    file("libs/x86/").mkdirs();

    configurations.natives.files.each { jar ->
        def outputDir = null
        if (jar.name.endsWith("natives-arm64-v8a.jar")) outputDir = file("libs/arm64-v8a")
        if (jar.name.endsWith("natives-armeabi-v7a.jar")) outputDir = file("libs/armeabi-v7a")
        if (jar.name.endsWith("natives-armeabi.jar")) outputDir = file("libs/armeabi")
        if (jar.name.endsWith("natives-x86_64.jar")) outputDir = file("libs/x86_64")
        if (jar.name.endsWith("natives-x86.jar")) outputDir = file("libs/x86")
        if (outputDir != null) {
            copy {
                from zipTree(jar)
                into outputDir
                include "*.so"
            }
        }
    }
}

android_instant_feature:

apply plugin: "com.android.feature"

android {
//    baseFeature true
    buildToolsVersion "28.0.2"
    compileSdkVersion 28
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ["${project(':android_common').projectDir}/res"]
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
        }
    }
    defaultConfig {
        versionCode 4031
        versionName "4.1.2.1i"
        minSdkVersion 16
        targetSdkVersion 28
        multiDexEnabled true
    }

    dexOptions {
        jumboMode true
    }

    // Proguard configuration
    buildTypes {
        release {
            //minifyEnabled true will turn proguard ON
//            minifyEnabled true
            //proguardFiles let you add your own proguard rules ('proguard-project.txt') in this case, as its already created by gdx-setup
//            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
        }
        debug {}
    }


    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    productFlavors {
    }
    lintOptions {
        abortOnError false
    }
}

task run(type: Exec) {
    def path
    def localProperties = project.file("../local.properties")
    if (localProperties.exists()) {
        Properties properties = new Properties()
        localProperties.withInputStream { instr ->
            properties.load(instr)
        }
        def sdkDir = properties.getProperty('sdk.dir')
        if (sdkDir) {
            path = sdkDir
        } else {
            path = "$System.env.ANDROID_HOME"
        }
    } else {
        path = "$System.env.ANDROID_HOME"
    }

    def adb = path + "/platform-tools/adb"
    commandLine "$adb", 'shell', 'am', 'start', '-n', 'com.marzoa.ruletafree/com.marzoa.ruletafree.AndroidLauncher'
}

dependencies {
    implementation project(":core")
    feature project(":android_common")
    api 'com.android.support:multidex:1.0.3'
    implementation "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
    implementation "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
    implementation "com.google.firebase:firebase-core:16.0.3"
    implementation 'com.google.android.gms:play-services-instantapps:16.0.0'

    implementation fileTree(dir: 'libs', include: ['*.jar'])
}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

android_instant:

apply plugin: 'com.android.instantapp'

android {
    defaultConfig {
        applicationId "com.myapp.id"
        minSdkVersion 16
        targetSdkVersion 28
        multiDexEnabled true
    }
}

dependencies {
    implementation project(":android_common")
    implementation project(":android_instant_feature")
}

安卓:

apply plugin: "com.android.application"
apply plugin: 'io.fabric' // Needed by crashlytics. DO NOT REMOVE.

android {
    buildToolsVersion "28.0.2"
    compileSdkVersion 28
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ["${project(':android_common').projectDir}/res"]
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
        }

        androidTest.setRoot('tests')
    }
    defaultConfig {
        applicationId "com.myapp.id"
        versionCode 4032
        versionName "4.1.2.1"
        minSdkVersion 16
        targetSdkVersion 28
        multiDexEnabled true
    }
    dexOptions {
        jumboMode true
    }
    // Proguard configuration
    buildTypes {
        release {
            //minifyEnabled true will turn proguard ON
            minifyEnabled true
            //proguardFiles let you add your own proguard rules ('proguard-project.txt') in this case, as its already created by gdx-setup
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    productFlavors {
    }
    lintOptions {
        abortOnError false
    }
}

task importPuzzles(type: Exec) {
    // TODO
}

task run(type: Exec) {
    def path
    def localProperties = project.file("../local.properties")
    if (localProperties.exists()) {
        Properties properties = new Properties()
        localProperties.withInputStream { instr ->
            properties.load(instr)
        }
        def sdkDir = properties.getProperty('sdk.dir')
        if (sdkDir) {
            path = sdkDir
        } else {
            path = "$System.env.ANDROID_HOME"
        }
    } else {
        path = "$System.env.ANDROID_HOME"
    }

    def adb = path + "/platform-tools/adb"
    commandLine "$adb", 'shell', 'am', 'start', '-n', 'com.marzoa.ruletafree/com.myapp.id.AndroidLauncher'
}

dependencies {
    implementation project(":core")
    implementation project(":android_common")
    api 'com.android.support:multidex:1.0.3'
    implementation "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
    implementation "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
    implementation "com.android.billingclient:billing:$playBillingLibVersion"
    implementation "com.google.firebase:firebase-core:16.0.3"
    implementation "com.google.firebase:firebase-ads:15.0.1"
    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.5'

    implementation fileTree(include: ['*.jar'], dir: 'libs')
}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

提前致谢!

Answer 1

感谢您提供 gradle 文件，看起来您的 gradle 依赖项混淆了。

持有 baseFeature true 的 com.android.feature 模块应该是其依赖项也持有 application project()和 feature project()。这是导致错误的主要原因:

Expected configuration ':___:debugFeatureCompileClasspath' to contain exactly one file, however, it contains no files.

因此，从您提供的内容来看，您的application project() 和feature project() 似乎是分开的。

要解决这个问题，您的“base”android_common 应该是:

application project(':android')
feature project(":android_instant_feature")

你的“非基本功能”android_instant_feature 应该是:

implementation project(':android_common)

这不会改变项目的整体结构。

• 您的 com.android.application 将使用以下库进行编译:core 和 android_common。
• 您的 com.android.instantapp 将与即时应用程序 apks 一起编译:android_common.apk 和 android_instant_feature.apk。

现在，为什么它之前与 2x baseFeature 一起工作？我不知道，它不应该...

曾经有一个页面@https://g.co/instantapps这解释了即时应用程序的结构，但您可以引用我之前涉及它的一篇文章以获得概述和引用链接:How can i access an activity from another feature module

旁注:我注意到您有一个实现项目(":core") 贯穿您的模块(减去instantapp)。如果那纯粹是一个像 com.android.library 这样的库，那么您不必那样设置它。实际上，您可以将它放在您的 base 中，如下所示:api project(":core") 并删除其他地方的所有其他引用。将其声明为 api 意味着任何同样实现该基础的模块也将暴露于此依赖项。 (尝试一下，根据您的核心拥有的其他库，在极少数情况下会出现错误，但请尝试看看)。