如何生成多个apk（使用gradle，libGDX）

问题描述

我想生成几个APK（x86，armeabi-v7a）。为了减小Google Play中APK的大小，

I want generate few APK (x86, armeabi-v7a). In order to reduce the size of APK in Google Play

但它不起作用。 Android studia说
import com.android.build.OutputFile - 无法解析符号'OutputFile'。在控制台中我看到了。我尝试在谷歌其他说明搜索，并尝试自己做一些事情，但我不擅长gradle

But its doesnt work. Android studia saysimport com.android.build.OutputFile - Cannot resolve symbol 'OutputFile'. And in console i see. I try search in google other instructions and tried to do something about it myself, but I'm not good at gradle

错误：无法调用方法multiply（）on null object

我的gradle文件是

my gradle-file is

// map for the version code

ext.versionCodes = ['armeabi-v7a':1, 'armeabi':2, 'x86':3]

import com.android.build.OutputFile

android.applicationVariants.all { variant ->
    // assign different version code for each output
    variant.outputs.each { output ->
        output.versionCodeOverride =
                project.ext.versionCodes.get(output.getFilter(OutputFile.ABI)) * 1000000 + android.defaultConfig.versionCode
    }
}

android {
    buildToolsVersion "20.0.0"
    compileSdkVersion 20
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }


        instrumentTest.setRoot('tests')
    }
    defaultConfig {
        versionCode 11
        versionName '1.3'
    }
    productFlavors {
    }

    splits {
        abi {
            enable true
            reset()
            include 'x86', 'armeabi-v7a', 'armeabi'
            universalApk true
        }
    }





}




// needed to add JNI shared libraries to APK when compiling on CLI
tasks.withType(com.android.build.gradle.tasks.PackageApplication) { pkgTask ->
    pkgTask.jniFolders = new HashSet<File>()
    pkgTask.jniFolders.add(new File(projectDir, 'libs'))
}
// called every time gradle gets executed, takes the native dependencies of
// the natives configuration, and extracts them to the proper libs/ folders
// so they get packed with the APK.
task copyAndroidNatives() {
    file("libs/armeabi/").mkdirs();
    file("libs/armeabi-v7a/").mkdirs();
    file("libs/x86/").mkdirs();

    configurations.natives.files.each { jar ->
        def outputDir = null
        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.jar")) outputDir = file("libs/x86")
        if (outputDir != null) {
            copy {
                from zipTree(jar)
                into outputDir
                include "*.so"
            }
        }
    }
}
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.mygdx.crazyball.android/com.mygdx.crazyball.android.AndroidLauncher'
}
// sets up the Android Eclipse project, using the old Ant based build.
eclipse {
    // need to specify Java source sets explicitely, SpringSource Gradle Eclipse plugin
    // ignores any nodes added in classpath.file.withXml
    sourceSets {
        main {
            java.srcDirs "src", 'gen'
        }
    }

    jdt {
        sourceCompatibility = 1.6
        targetCompatibility = 1.6
    }

    classpath {
        plusConfigurations += [project.configurations.compile]
        containers 'com.android.ide.eclipse.adt.ANDROID_FRAMEWORK', 'com.android.ide.eclipse.adt.LIBRARIES'
    }

    project {
        name = appName + "-android"
        natures 'com.android.ide.eclipse.adt.AndroidNature'
        buildCommands.clear();
        buildCommand "com.android.ide.eclipse.adt.ResourceManagerBuilder"
        buildCommand "com.android.ide.eclipse.adt.PreCompilerBuilder"
        buildCommand "org.eclipse.jdt.core.javabuilder"
        buildCommand "com.android.ide.eclipse.adt.ApkBuilder"
    }
}
// sets up the Android Idea project, using the old Ant based build.
idea {
    module {
        sourceDirs += file("src");
        scopes = [COMPILE: [plus: [project.configurations.compile]]]

        iml {
            withXml {
                def node = it.asNode()
                def builder = NodeBuilder.newInstance();
                builder.current = node;
                builder.component(name: "FacetManager") {
                    facet(type: "android", name: "Android") {
                        configuration {
                            option(name: "UPDATE_PROPERTY_FILES", value: "true")
                        }
                    }
                }
            }
        }
    }
}
dependencies {
}

推荐答案

为通用 APK获取ABI，因为您的 versionCodes 地图中没有过滤器。您应该在以某种方式应用乘法之前检查 output.getFilter（OutputFile.ABI）的结果。

Looks like it fails on a try to get ABI for universal APK as there is no filter for it in your versionCodes map. You should check the result of output.getFilter(OutputFile.ABI) before applying multiplication in some manner like for example:

android.applicationVariants.all { variant ->
    // assign different version code for each output
    variant.outputs.each { output ->
        def abiFilter = output.getFilter(OutputFile.ABI)
        def abiMultiplier = 0

        if (abiFilter != null) {
            abiMultiplier = project.ext.versionCodes.get(abiFilter)
        }

        output.versionCodeOverride =
            abiMultiplier * 1000000 + android.defaultConfig.versionCode
    }
}

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