这是我的配置：

MBP 2015、8GB 内存、固态硬盘

安卓工作室2.2.3

平均而言，构建持续 7/8 分钟，有时 10/12 分钟

我已经尝试了网上能找到的所有方法，但似乎都不起作用：

--- 自定义虚拟机选项：

-Xms1024m
-Xmx8192m
-XX:MaxPermSize=1024m
-XX:ReservedCodeCacheSize=440m
-XX:+UseCompressedOops
-XX:+HeapDumpOnOutOfMemoryError
-Dfile.encoding=UTF-8

--- 按需编译/配置

--- 并行编译器/编译模块

--- Gradle / 离线工作

--- gradle.properties 文件：

org.gradle.daemon=true
org.gradle.jvmargs=-Xmx8192m -XX:MaxPermSize=1024m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 -noverify
org.gradle.parallel=true
org.gradle.configureondemand=true
android.enableBuildCache=true

有谁知道发生了什么事，因为这太荒谬了

UPDATE:

从那时起我换成了16GB RAM，显然有一些改进，我的印象是不到一分钟左右，但它需要3-4分钟，这仍然是不可接受的：这是Gradle的一部分我发现日志花费的时间太长：

git log --pretty=format:'%h %s'
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preAlphaBuild UP-TO-DATE
:app:preBirdsBuild UP-TO-DATE
:app:preKfgBuild UP-TO-DATE
:app:prePenBuild UP-TO-DATE
:app:prePrelaunchBuild UP-TO-DATE
:app:prePtr1Build UP-TO-DATE
:app:prePtr3Build UP-TO-DATE
:app:preReleaseBuild UP-TO-DATE
:app:prepareCnPedantSweetalertLibrary13Library
:app:prepareComAndroidSupportAnimatedVectorDrawable2511Library
:app:prepareComAndroidSupportAppcompatV72511Library
:app:prepareComAndroidSupportCardviewV72511Library
:app:prepareComAndroidSupportDesign2511Library
:app:prepareComAndroidSupportMultidex101Library
:app:prepareComAndroidSupportRecyclerviewV72511Library
:app:prepareComAndroidSupportSupportCompat2511Library
:app:prepareComAndroidSupportSupportCoreUi2511Library
:app:prepareComAndroidSupportSupportCoreUtils2511Library
:app:prepareComAndroidSupportSupportFragment2511Library
:app:prepareComAndroidSupportSupportMediaCompat2511Library
:app:prepareComAndroidSupportSupportV132511Library
:app:prepareComAndroidSupportSupportV42511Library
:app:prepareComAndroidSupportSupportVectorDrawable2511Library
:app:prepareComAndroidSupportTransition2511Library
:app:prepareComCrashlyticsSdkAndroidAnswers1310Library
:app:prepareComCrashlyticsSdkAndroidBeta122Library
:app:prepareComCrashlyticsSdkAndroidCrashlytics265Library
:app:prepareComCrashlyticsSdkAndroidCrashlyticsCore2314Library
:app:prepareComDevbracketsAndroidExomedia311Library
:app:prepareComEftimoffAndroidViewpagerTransformers101Library
:app:prepareComGithubCastorflexSmoothprogressbarLibrary110Library
:app:prepareComGithubHotchemiPermissionsdispatcher230Library
:app:prepareComGithubKibotuAndroidAnimationsActions107Library
:app:prepareComGithubKibotuBloodHound105Library
:app:prepareComGithubKibotuCommonAndroidUtils072Library
:app:prepareComGithubKibotuGooglePlayForceUpdate108Library
:app:prepareComGithubKibotuNetKibotuAndroidDeviceinfo121Library
:app:prepareComGithubKibotuOpenAndroidSSLWrapper107Library
:app:prepareComGithubKibotuRecyclerViewPresenter141Library
:app:prepareComGithubKibotuShareIntentBuilderV003Library
:app:prepareComGithubKibotuTimeBomb110Library
:app:prepareComGithubKibotuUrlShortener107Library
:app:prepareComGithubOrhanobutHawk123Library
:app:prepareComGithubOzodrukhCircularReveal201Library
:app:prepareComGoogleAndroidExoplayerExoplayerR1513Library
:app:prepareComGoogleAndroidGmsPlayServicesAds1001Library
:app:prepareComGoogleAndroidGmsPlayServicesAdsLite1001Library
:app:prepareComGoogleAndroidGmsPlayServicesAnalytics1001Library
:app:prepareComGoogleAndroidGmsPlayServicesAnalyticsImpl1001Library
:app:prepareComGoogleAndroidGmsPlayServicesBase1001Library
:app:prepareComGoogleAndroidGmsPlayServicesBasement1001Library
:app:prepareComGoogleAndroidGmsPlayServicesClearcut1001Library
:app:prepareComGoogleAndroidGmsPlayServicesGass1001Library
:app:prepareComGoogleAndroidGmsPlayServicesGcm1001Library
:app:prepareComGoogleAndroidGmsPlayServicesIid1001Library
:app:prepareComGoogleAndroidGmsPlayServicesLocation1001Library
:app:prepareComGoogleAndroidGmsPlayServicesTagmanagerV4Impl1001Library
:app:prepareComGoogleAndroidGmsPlayServicesTasks1001Library
:app:prepareComGoogleFirebaseFirebaseAnalytics1001Library
:app:prepareComGoogleFirebaseFirebaseAnalyticsImpl1001Library
:app:prepareComGoogleFirebaseFirebaseCommon1001Library
:app:prepareComGoogleFirebaseFirebaseCore1001Library
:app:prepareComGoogleFirebaseFirebaseIid1001Library
:app:prepareComGoogleFirebaseFirebaseMessaging1001Library
:app:prepareComJakewhartonButterknife840Library
:app:prepareComJakewhartonProcessPhoenix110Library
:app:prepareComMikepenzFastadapter210Library
:app:prepareComMikepenzIconicsCore280Library
:app:prepareComMikepenzMaterialdrawer581Library
:app:prepareComMikepenzMaterialize100Library
:app:prepareComMukeshMarkdownview100Library
:app:prepareComNightonkeJellytogglebutton102Library
:app:prepareComNightonkeWowoviewpager102Library
:app:prepareComOgaclejapanSmarttablayoutLibrary161Library
:app:prepareComOgaclejapanSmarttablayoutUtilsV4161Library
:app:prepareComPnikosisMaterialishProgress10Library
:app:prepareComSbrukhandaFragmentviewpagerFragmentviewpager100Library
:app:prepareComShawnlinNumberPicker101Library
:app:prepareComSloydevPreferator100Library
:app:prepareComYydcdutRxmarkdown005Library
:app:prepareComZplesacConnectionbuddy140Library
:app:prepareHanksXyzHtextviewLibrary015Library
:app:prepareIoFabricSdkAndroidFabric1314Library
:app:prepareIoNlopezSmartlocationLibrary329Library
:app:prepareIoReactivexRxandroid121Library
:app:prepareJpWasabeefGlideTransformations201Library
:app:prepareJpWasabeefRecyclerviewAnimators225Library
:app:prepareMeGrantlandAutofittextview021Library
:app:prepareMeRelexCircleindicator122Library
:app:prepareNetDanlewAndroidJoda297Library
:app:prepareUkCoChrisjenxCalligraphy220Library
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:fabricGenerateResourcesDebug
:app:generateDebugResValues UP-TO-DATE
:app:processDebugGoogleServices
Parsing json file: ../google-services.json
:app:generateDebugResources
:app:mergeDebugResources
:app:processDebugResources
:app:generateDebugSources
:app:incrementalDebugJavaCompilationSafeguard
:app:javaPreCompileDebug
:app:compileDebugKotlin

直到这里都很好，但是:app:compileDebugKotlin大约需要 60 多秒...

进而，

...
...
:app:copyDebugKotlinClasses
:app:compileDebugNdk NO-SOURCE
:app:compileDebugSources
:app:transformClassesWithRetrolambdaForDebug
:app:transformClassesWithDexForDebug

最后一行也保留了很长时间。

对于 Kotlin 用户：

增量构建

编译器最重要的性能特征之一是它使用增量编译。正常构建将重新编译项目中的所有源文件，但增量构建将跟踪自上次构建以来哪些文件已更改，并且仅重新编译这些文件以及依赖于它们的文件。这会对编译时间产生巨大影响，尤其是对于大型项目。

Kotlin 在 1.0.2 版本中添加了增量构建，您可以通过添加来启用它们kotlin.incremental=true到你的 gradle.properties...

See "Kotlin 与 Java：编译速度 https://medium.com/keepsafe-engineering/kotlin-vs-java-compilation-speed-e6c174b39b5d“ 了解更多信息。

将此代码添加到 gradle.properties 也可能很有用：

# Add this in your global gradle.properties file 
# at ~/.gradle/gradle.properties
# Enable Gradle Daemon
org.gradle.daemon=true
# Enable Configure on demand
org.gradle.configureondemand=true
# Enable parallel builds
org.gradle.parallel=true
# Enable Build Cache
android.enableBuildCache=true
# Enable simple gradle caching
org.gradle.caching=true
# Increase memory allotted to JVM
org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m - 
XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8

如果您的所有依赖项都是从存储库中心下载的，您可以使用它来制作 gradle 离线形式：

File->Setting->Build, Execution, Deploymennt->Gradle