使用 Android Studio 构建的应用程序 Apk 大于使用 Eclipse 构建的应用程序 Apk

Question

最近我将我的项目迁移到 Android Studio。该项目引用了一个 库项目 而没有复制它（参见 this answer）。

我注意到从 Android Studio 生成的 apk 比从 Eclipse 生成的要大（几乎大两倍）。当我解压这两个 apk 文件时，我看到来自 Android Studio 的 apk 中还有一个文件夹 "main"，它包含 "res" 文件夹和 AndroidManifest.xml。

问题是 apk 的主目录中有 "res" 文件夹 (/res)，其中包含相同的资源 (/main/res)。

我认为下一个 gradle 文件导致了问题，但没有它项目无法构建。

build.gradle 用于我的库模块 - my_android_project_lib 模块

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
    }
}
allprojects {
    repositories {
        jcenter()
    }
}

apply plugin: 'com.android.library'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 21
    }

    // I think this duplicates the resources
    sourceSets {
        main {
            manifest.srcFile 'my_android_project_lib/src/main/AndroidManifest.xml'
            java.srcDirs = ['my_android_project_lib/src']
            resources.srcDirs = ['my_android_project_lib/src']
            aidl.srcDirs = ['my_android_project_lib/src']
            renderscript.srcDirs = ['my_android_project_lib/src']
            res.srcDirs = ['my_android_project_lib/src/main/res', 'slidingMenuLib/src/main/res']
            assets.srcDirs = ['my_android_project_lib/src/main/assets']
        }
    }
}

dependencies {
    compile project(':slidingMenuLib')
    compile fileTree(dir: 'my_android_project_lib/libs', include: ['*.jar'])
    compile fileTree(dir: 'slidingMenuLib/libs', include: ['*.jar'])
    compile 'com.google.code.gson:gson:1.7.1'
}

settings.gradle

include ':my_android_app'
include ':my_android_project_lib'
include ':slidingMenuLib'
project(':my_android_project_lib').projectDir = new File(settingsDir, '../my_android_project_lib')

build.gradle 用于 my_android_app 模块

apply plugin: 'com.android.application'

android {
    compileSdkVersion 19
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "my.android.app"
        minSdkVersion 15
        targetSdkVersion 19
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {
    compile project(path: ':my_android_project_lib')
}

build.gradle 用于 my_android_app 项目

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

你知道如何解决这个问题吗？我遗漏了一些重要的东西。

Answer 1

我发现了问题。当我从 my_android_project_lib 模块的 build.gradle 中删除以下行时，应用程序的大小变回正常。

resources.srcDirs = ['anyoption_android_v2_lib/src']

my_android_project_lib 模块的最终 build.gradle 是：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
    }
}
allprojects {
    repositories {
        jcenter()
    }
}

apply plugin: 'com.android.library'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 21
    }

    // The problem is here.
    sourceSets {
        main {
            manifest.srcFile 'my_android_project_lib/src/main/AndroidManifest.xml'
            java.srcDirs = ['my_android_project_lib/src']
            res.srcDirs = ['my_android_project_lib/src/main/res']

            // Removed
            // resources.srcDirs = ['my_android_project_lib/src'] - MAIN PROBLEM
            // aidl.srcDirs = ['my_android_project_lib/src']
            // renderscript.srcDirs = ['my_android_project_lib/src']
            // res.srcDirs = ['my_android_project_lib/src/main/res', 'slidingMenuLib/src/main/res']
            // assets.srcDirs = ['my_android_project_lib/src/main/assets']
        }
    }
}

dependencies {
    compile project(':slidingMenuLib')
    compile fileTree(dir: 'my_android_project_lib/libs', include: ['*.jar'])
    compile fileTree(dir: 'slidingMenuLib/libs', include: ['*.jar'])
    compile 'com.google.code.gson:gson:1.7.1'
}

Answer 2

正在评论

resources.srcDirs = ['src']

在 build.gradle 文件中，为我工作。

build.gradle 文件中的 SourceSet 如下所示，

sourceSets {
    main {
        manifest.srcFile 'AndroidManifest.xml'
        java.srcDirs = ['src']
      //  resources.srcDirs = ['src']
        aidl.srcDirs = ['src']
        renderscript.srcDirs = ['src']
        res.srcDirs = ['res']
        assets.srcDirs = ['assets']
    }

    // Move the tests to tests/java, tests/res, etc...
    instrumentTest.setRoot('tests')

    // Move the build types to build-types/<type>
    // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
    // This moves them out of them default location under src/<type>/... which would
    // conflict with src/ being used by the main source set.
    // Adding new build types or product flavors should be accompanied
    // by a similar customization.
    debug.setRoot('build-types/debug')
    release.setRoot('build-types/release')
}

使用 Android Studio 构建的应用程序 Apk 大于使用 Eclipse 构建的应用程序 Apk

Application Apk built with Android Studio is larger than one built with Eclipse

android

build

apk

android-studio

android-gradle-plugin