eclipse下使用MultiDex解决65536限制

eclipse下使用MultiDex解决65536限制

采用Android dex分包方案解决，步骤如下:

一、安装gradle ：

1.1、下载gradle-2.2.1-bin.zip (也可以使用最新的gradle版本)

         (https://services.gradle.org/distributions/gradle-2.2.1-bin.zip) 

1.2、解压到安装目录 

         如：D:\WorkInstall\gradle-2.2.1

1.3、配置环境变量  

         GRADLE_HOME和path

1.4、验证环境变量 

         打开 cmd， 输入 gardle -v，如下环境配置成功

二、配置Android SDK

2.1、生成 build.gradle 配置文件：

         打开eclipse，选择主工程，右键 -->Ecport --> Generate Gradle build files ，选择主工程    以及相关的工程，Finish。

2.2、配置 build-tools：

         打开 build.gradle，查看属性 buildToolsVersion，进入 sdk/build-tools/，选择对应的版本。

         进入sdk/extras/android/support/，把 multidex 文件夹复制到 sdk/build-tools/21.1.2/目录下。

2.3、配置子工程 build.gradle 文件

         1、 workspace配置：

         打开 workspace，里面会有build.gradle 和 settings.gradle. 配置如下

         build.gradle:

         注意：gradle 版本对应的Android配置（2.2.1-----对应 0.14+，具体的对应可以查看google     文档）。

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

         buildscript{

               repositories {

                mavenCentral()

               }

               dependencies {

         classpath'com.android.tools.build:gradle:0.14.+'

               }

         }

         settings.gradle:【主要是工程配置】

         include':google-play-services_lib'

         include':easy3d-myshare-core-magic'

         include':magic-finger-china'

         include':pulltorefresh-library'

         include':android-support-v7-recyclerview'

         include':ImageViewTextEdit-library'

         include':ImageViewZoom-library'

         2、每个子工程 build.gradle 配置：

         首先，给每个子工程添加 local.properties 文件，文件内容：（sdk.dir=Android SDK路径）

         sdk.dir=D\:\\WorkInstall\\sdk

         build.gradle:（子工程的 build.gradle配置都一样）

         applyplugin: 'android-library'

         dependencies{

              compile fileTree(dir: 'libs', include:'*.jar')

         }

         android{

              compileSdkVersion 22

        buildToolsVersion"21.1.2"

           enforceUniquePackageName=false

           defaultConfig {

                   minSdkVersion14

                   targetSdkVersion19 

                 //Enabling multidex support.

                   multiDexEnabledtrue

           }

           dexOptions {

                   preDexLibraries= false

           }

           lintOptions { 

                   abortOnErrorfalse 

        }

              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>/... whichwould

                 //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')

              }

         }

2.4、配置主工程 build.gradle 文件

         applyplugin: 'android'

         dependencies{

              compile fileTree(dir: 'libs', include:'*.jar')

              compileproject(':android-support-v7-recyclerview')

              compile project(':easy3d-myshare-core-magic')

              compile project(':google-play-services_lib')

              compile project(':pulltorefresh-library')

              compile project(':ImageViewTextEdit-library')

              compile'com.android.support:support-v4:23.1.0'

           compile 'com.android.support:multidex:1.0.0'

           compile(project(':android-support-v7-recyclerview')){

                   excludemodule: 'support-v4'

           }

         }

         android{

              compileSdkVersion 22

              buildToolsVersion "21.1.2"

           packagingOptions {

             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/MANIFEST.MF'

             exclude 'META-INF/license.txt'

             exclude 'META-INF/dependencies.txt'

           }

           configurations {

                     all*.exclude module: 'support-v4'

           }

           dexOptions {

                   preDexLibraries= false

           }

           lintOptions { 

                   abortOnErrorfalse 

        }

              compileOptions {

                 sourceCompatibilityJavaVersion.VERSION_1_7

                 targetCompatibilityJavaVersion.VERSION_1_7

              }

           defaultConfig {

                   minSdkVersion14

                   targetSdkVersion19 

                 //Enabling multidex support.

                   multiDexEnabledtrue

           }

           // 打包的签名信息（storeFile， 签名文件的路径）

           signingConfigs {  

                myrelease {  

                               keyAlias'magic_finger.keystore'

                            keyPassword'magic_finger_20150724'

                            storeFilefile('magic_finger.keystore')

                            storePassword'magic_finger_20150724'

                   }

           }

           buildTypes {

                   release{

                            //混淆

                            minifyEnabledtrue

                            //Zipalign优化

                               //zipAlignEnabledtrue

                               //移除无用的resource文件

                               //shrinkResourcestrue

                            //proguardFile getDefaultProguardFile('proguard-android.txt')

                            //加载默认混淆配置文件 progudard-android.txt在sdk目录里面，                                     //proguard.cfg是我们自己配的混淆文件

            proguardFilesgetDefaultProguardFile('proguard-android.txt'), 'proguard.cfg'

                            signingConfigsigningConfigs.myrelease                           

                 }

           }

     sourceSets {

        main {

            manifest.srcFile'AndroidManifest.xml'

            java.srcDirs = ['src']

            resources.srcDirs = ['src']

            aidl.srcDirs = ['src']

            renderscript.srcDirs = ['src']

            res.srcDirs = ['res']

            assets.srcDirs = ['assets']

              jniLibs.srcDirs= ['libs']

        }

        // Move the tests to tests/java,tests/res, etc...

        instrumentTest.setRoot('tests')

        // Move the build types tobuild-types/<type>

        // For instance,build-types/debug/java, build-types/debug/AndroidManifest.xml, ...

        // This moves them out of them defaultlocation under src/<type>/... which would

        // conflict with src/ being used by themain source set.

        // Adding new build types or productflavors should be accompanied

        // by a similar customization.

        debug.setRoot('build-types/debug')

        release.setRoot('build-types/release')

     }

         afterEvaluate{

                   tasks.matching{

                            it.name.startsWith('dex')

                   }.each{ dx ->

                            if(dx.additionalParameters == null) {

                                     dx.additionalParameters= ['--multi-dex']

                            }else{

                                     dx.additionalParameters+= '--multi-dex'

                            } 

                   }

           }

         }

2.4、添加 android-support-multidex.jar

         将android-support-multidex.jar(sdk\extras\android\support\multidex\library\libs)引入到   工程中。 

         (注：最好放在referenced libraies中，而不是放在libs下，这样避免build时jar包重复) 

         同样，以相同的方式把 android-support-v4.jar 添加进去（PS：这里出现了 duplicate entry: com/nineoldandroids/animation/Animator$AnimatorListener.class）

2.5 配置MultiDexApplication：

         然后在Application中覆盖方法attachBaseContext。 

         注：这里有三种方式： （android.support.multidex.MultiDexApplication）

         a.在AndroidManifest.xml的application中声明MultiDexApplication;

         b.如果你已经有自己的Application类，让其继承MultiDexApplication； 

     c.如果你的Application类已经继承自其它类，那么可以重写attachBaseContext()方法： 

         根据自身情况选择一种方式。

三、打包apk

         完成之后，可以开始打包了。

         cmd，进入工程所在的目录，输入：gradle build --stacktrace，最终Build successful为止。

         打开apk包，可以看见.dex被分成了多。

五、常见问题：

以上步骤会出现一些问题，目前的解决方案如下：

5.1、SDK location not found. Define location with sdk.dir in thelocal.properties file or with an ANDROID_HOME environment variable.

         请检查所有工程里面是否包含了 local.properties，且 sdk.dir 是否配置正确

5.2、java.util.zip.ZipException: duplicate entry:xxxx.class。

         一定是jar冲突了，可能是多个project中都引入了相同的jar，需要剔除掉重复的jar。

5.3、Execution failed for task ':magic-finger-china:packageRelease'.

         这个是签名文件不对，请检查

5.4、Failed to shrink resources: java.util.zip.ZipException: invalidentry compressed

 size(expected 4017 but got 4081 bytes); ignoring

         去掉混淆文件里面 zippalignEnable true.

5.5、Error:Execution failed for task ':app:proguardDemoRelease'.

> java.io.IOException: The same input jar xxxx is specified twice.

         是 proguard.cfg 文件，打开，并去掉所有的 -libraryjars libs/xxxx;