详解android项目由Gradle 2.2 切换到 3.0的坑

问题1、运行的时候一直报如下错误

Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForApiTestDebug'. 
> java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

查了很多资料，大概意识是引用重复的库或jar的问题。

然后一遍一遍的检查，发现并没有引用重复的jar包。

最后考虑是不是第三方库引用jar出现的问题，然后就一个一个排查第三方库，最后发现我们用支付用的是

compile 'com.pingxx:pingpp-alipay:2.1.9' // 使用支付宝时添加

发现这个库有些问题，竟然在里面引用两个版本的支付宝的jar包，果断的换了最新版本，检查了一个这次就引用了一个jar包。重新编译了一下项目，运行成功，问题解决了。

特别注意：引用第三方库在gralde3.0版本是更为严格，要特别注意。

问题2、

AAPT2

AAPT2 将默认启用，如果遇到离奇的问题，可以尝试禁用，只要在 gradle.properties 中加入：

android.enableAapt2=false

其他：

应用（app）目录下build.gradle（下面 implementation "com.android.support:design:25.4.0" 切换为 project的统一配置）

apply plugin: 'com.android.application'
apply plugin: 'io.fabric'
apply plugin: 'com.google.gms.google-services'
   android {
    compileSdkVersion 25
    buildToolsVersion "26.0.2" 

    defaultConfig {
      multiDexEnabled true
      applicationId "com.example"
      minSdkVersion 21
      targetSdkVersion 23
      versionCode 1
      versionName "1.0" 

      renderscriptTargetApi 23
      renderscriptSupportModeEnabled true 

    }
    compileOptions {
      sourceCompatibility JavaVersion.VERSION_1_8
      targetCompatibility JavaVersion.VERSION_1_8
    }
    lintOptions {
      quiet true
      abortOnError false
      ignoreWarnings true
      disable 'InvalidPackage'      //Some libraries have issues with this.
      disable 'OldTargetApi'
      //Lint gives this warning but SDK 20 would be Android L Beta.
      disable 'IconDensities'      //For testing purpose. This is safe to remove.
      disable 'IconMissingDensityFolder' //For testing purpose. This is safe to remove.
    } 

    dexOptions {
      javaMaxHeapSize "8G"
    } 

    packagingOptions {
      exclude 'LICENSE.txt'
      exclude 'META-INF/DEPENDENCIES.txt'
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
      exclude 'META-INF/NOTICE'
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/DEPENDENCIES'
      exclude 'META-INF/notice.txt'
      exclude 'META-INF/license.txt'
      exclude 'META-INF/dependencies.txt'
      exclude 'META-INF/rxjava.properties'
    } 

    sourceSets {
      main.java.srcDirs += 'build/generated/source/apt'
    }
  } 

  repositories {
    flatDir {
      dirs 'libs'
    }
  } 

  dependencies {
  implementation fileTree(dir: 'libs', include: ['*.jar'])
  implementation project(':library_api')
  implementation project(':library_base')
  implementation project(':library_blur_dialog')
  implementation project(':library_countrycodepicker_dialog')
  implementation project(':library_glow_decorator')
  implementation project(':library_icons')
  implementation project(':library_loopvideo')
  implementation project(':library_section_adaper')
  implementation project(':library_taptargetview')
  implementation project(':library_ucrop')
  implementation project(':library_utils')
  implementation project(':library_utils_picasso')
  implementation project(':library_vector_compat')
  implementation project(':library_view_clock')
  implementation project(':library_view_shimmer_recycler') 

  implementation "com.google.android.gms:play-services-cast-framework:11.4.2"
  compileOnly 'com.google.android.wearable:wearable:2.0.3'
  implementation 'com.google.android.support:wearable:2.0.3'
  implementation 'com.google.android.exoplayer:exoplayer:r2.4.1' 

  implementation "com.android.support:mediarouter-v7:25.4.0"
  implementation "com.android.support:leanback-v17:25.4.0"
  implementation "com.android.support:design:25.4.0" 

  implementation "com.android.support:appcompat-v7:25.4.0"
  implementation "com.android.support:support-v4:25.4.0"
  implementation "com.android.support:gridlayout-v7:25.4.0"
  implementation "com.android.support:cardview-v7:25.4.0"
  implementation "com.android.support:recyclerview-v7:25.4.0"
  implementation "com.android.support:preference-v14:25.4.0" 

  // rxjava
  implementation 'io.reactivex:rxjava:1.2.9'
  implementation 'io.reactivex:rxandroid:1.2.1'
  implementation 'com.github.davidmoten:rxjava-extras:0.8.0.6' 

  // square
  implementation "com.squareup.retrofit2:retrofit:2.1.0",
  implementation "com.squareup.retrofit2:converter-gson:2.1.0"
  implementation "com.squareup.retrofit2:adapter-rxjava:2.1.0"
  implementation "com.squareup.phrase:phrase:1.1.0" 

  implementation "com.squareup.okhttp3:okhttp:3.6.0"
  implementation "com.squareup.okhttp3:logging-interceptor:3.6.0"
  implementation "com.squareup.okhttp3:okhttp-urlconnection:3.6.0" 

  // picasso
  implementation "com.squareup.picasso:picasso:2.5.2"
  implementation 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0' 

  // dagger
  implementation "com.google.dagger:dagger:2.10"
  annotationProcessor "com.google.dagger:dagger-compiler:2.10"
  implementation "javax.annotation:jsr250-api:1.0"
  implementation "javax.inject:javax.inject:1" 

  // jake ftw
  implementation 'com.jakewharton:butterknife:8.8.1'
  annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
  compileOnly 'org.projectlombok:lombok:1.16.16'
  annotationProcessor 'org.projectlombok:lombok:1.16.16'
  // FragmentWithArgs
  implementation  "com.hannesdorfmann.fragmentargs:annotation:3.0.2",
  annotationProcessor "com.hannesdorfmann.fragmentargs:processor:3.0.2",
  implementation "org.parceler:parceler-api:1.1.9",
  annotationProcessor "org.parceler:parceler:1.1.9",
  implementation 'com.hannesdorfmann.fragmentargs:bundler-parceler:3.0.2'
   implementation "com.github.codekidX:storage-chooser:1.0.34"
  implementation 'io.github.yavski:fab-speed-dial:1.0.6'
  implementation('com.crashlytics.sdk.android:crashlytics:2.6.7@aar') {
    transitive = true;
  } 

  // intent builder
  implementation     "com.github.marcinmoskala.activitystarter:activitystarter:1.00"
  annotationProcessor "com.github.marcinmoskala.activitystarter:activitystarter-compiler:1.00"
  implementation 'com.android.support.constraint:constraint-layout:1.0.2'//constraint-layout
  implementation 'org.greenrobot:eventbus:3.0.0'
  //font
  implementation 'uk.co.chrisjenx:calligraphy:2.2.0'
  implementation 'com.github.florent37:expectanim:1.0.6'
  implementation 'com.romandanylyk:pageindicatorview:0.2.0@aar'
  implementation 'com.github.rubensousa:gravitysnaphelper:1.2'
  implementation 'com.flaviofaria:kenburnsview:1.0.7'
  implementation 'com.github.florent37:arclayout:1.0.2'
  implementation 'com.jakewharton.rxbinding:rxbinding:1.0.1'
  implementation 'com.wang.avi:library:2.1.3'
  implementation 'com.flyco.tablayout:FlycoTabLayout_Lib:2.1.2@aar'
  implementation 'com.borax12.materialdaterangepicker:library:1.9'
  implementation 'com.github.scottyab:showhidepasswordedittext:0.8'
  //Location
  implementation "com.google.android.gms:play-services-maps:11.4.2"
  implementation 'pl.charmas.android:android-reactive-location:0.10@aar'
  implementation "com.google.android.gms:play-services-location:11.4.2"
  //you can use newer GMS version if you need
  implementation "com.google.android.gms:play-services-places:11.4.2"
  implementation 'com.tbruyelle.rxpermissions:rxpermissions:0.9.4@aar'
  implementation 'commons-validator:commons-validator:1.4.1'
  implementation 'com.balysv:material-ripple:1.0.2'
  implementation 'com.googlecode.libphonenumber:libphonenumber:8.5.2'
  implementation 'ru.egslava:MaskedEditText:1.0.5'
  implementation 'com.futuremind.recyclerfastscroll:fastscroll:0.2.5'
  implementation "com.google.firebase:firebase-core:11.4.2"
  implementation 'com.labo.kaji:swipeawaydialog:0.1.1'
  implementation 'io.supercharge:shimmerlayout:1.0.1'
  implementation 'hanks.xyz:htextview-library:0.1.5'
  implementation 'com.github.castorflex.smoothprogressbar:library:1.1.0'//progressbar for action bar
  implementation 'io.reactivex:rxjava-math:1.0.0'
  implementation 'jp.wasabeef:picasso-transformations:2.1.2'
  implementation 'com.afollestad.material-dialogs:core:0.9.1.0'
  implementation('com.github.ihsanbal:LoggingInterceptor:2.0.2') {
    exclude group: 'org.json', module: 'json'
  }
} 

项目（project）目录下build.gradle：

// Top-level build file where you can add configuration options common to all sub-projects/modules. 

buildscript {
  repositories {
    maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
    maven {
      url 'https://maven.google.com/'
      name 'Google'
    }
    jcenter()
//    maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter' }
  }
  dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'
    classpath 'com.meituan.android.walle:plugin:1.1.1'
    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
  }
} 

allprojects {
  repositories {
    maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
//    maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter' }
    maven { url "https://jitpack.io" }
    maven { url 'https://maven.google.com' }
    maven { url "https://dl.google.com/dl/android/maven2/"}
    jcenter()
    google()
  }
} 

task clean(type: Delete) {
  delete rootProject.buildDir
} 

ext {
  targetSdkVersion = 26
  minSdkVersion = 14
  compileSdk = 26
  buildTools = "26.0.2"
  junit = 'junit:junit:4.12'
  recyclerview = 'com.android.support:recyclerview-v7:26.0.2'
  appcompat = 'com.android.support:appcompat-v7:26.0.2'
  design = 'com.android.support:design:26.0.2'
  percent = 'com.android.support:percent:26.0.2'
  glide = 'com.github.bumptech.glide:glide:3.7.0'
  retrofit = 'com.squareup.retrofit:retrofit:1.9.0'
  gson = 'com.google.code.gson:gson:2.8.0'
  okhttp = 'com.squareup.okhttp3:okhttp:3.6.0'
//  converterGson = 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
//  converterJackson = 'com.squareup.retrofit:converter-jackson:1.9.0' 

  commonsio = 'commons-io:commons-io:2.4'
} 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

您可能感兴趣的文章:

• AndroidStudio 使用过程中出现的异常（Gradle sync failed）处理办法
• 为Android Studio编写自定义Gradle插件的教程
• Android Studio使用教程（五）：Gradle命令详解和导入第三方包
• Android Studio使用教程（四）：Gradle基础
• Gradle编译打包Android apk详细介绍
• AndroidStudio更新出现Refreshing ''xxx'' Gradle Project状态解决办法
• Android客户端程序Gradle如何打包
• 详解Androidstudio3.0 关于Gradle报错的问题(小结)
• android studio 3.0 gradle 打包脚本配置详解