在 Gradle 构建系统中启用 multi-dex 选项非常容易,但我还没有找到如何在 ant 构建中启用此选项的示例。我该如何实现这一点?
在 Gradle 构建系统中启用 multi-dex 选项非常容易,但我还没有找到如何在 ant 构建中启用此选项的示例。我该如何实现这一点?
我使用基于Ruboto的build.xml为应用程序引入了多dex支持,(向他们致敬!)。因此,这是我推荐采取的方法。在这种情况下,您不必创建自定义ant jars,只需编辑您的build.xml并应用来自https://developer.android.com/tools/building/multidex.html的所有非gradle步骤即可。
至于build.xml,您需要查看所有路径是否相互配合,您可能已经更改了其中一些路径并需要调整ant步骤。
在我的情况下,我还需要生成必须放置在第一个生成的dex(默认值)中的类列表,以便应用程序可以在Application的onCreate中加载其他dex时启动。为了做到这一点,您需要运行名为mainDexClasses的脚本,在build-tools中可以找到它:
mainDexClasses [--output <output file>] <application path>
Alex Lipov写了一篇很好的文章,与此相关。
当您生成类列表后,您必须通过在dx参数中添加来指向此列表。
<arg value="--main-dex-list="class_list_path" />
dx命令的执行位置。
值得记住的是,Ruboto脚本假设只会创建一个额外的dex文件,但并非总是如此。如果存在多个额外的dex文件,则需要实现添加操作:
<if>
<condition>
<available file="${third_dex_path}"/>
</condition>
<then>
<exec executable="${aapt}" dir="${out.absolute.dir}" failonerror="true">
<arg line='add -v "${out.absolute.dir}/${resource.package.file.name}" ${third_dex}'/>
</exec>
</then>
</if>
Ant中的multidex支持已启用!它不像使用gradle那么容易,但是仍然可以实现。
更新:我的build.xml(除了与答案无关的部分):
<!-- Packages the application. Overriden in order to add "-post-package-resources"" dependency-->
<target name="-package" depends="-dex, -package-resources, -post-package-resources">
<!-- only package apk if *not* a library project -->
<do-only-if-not-library elseText="Library project: do not package apk..." >
<if condition="${build.is.instrumented}">
<then>
<package-helper>
<extra-jars>
<!-- Injected from external file -->
<jarfile path="${emma.dir}/emma_device.jar" />
</extra-jars>
</package-helper>
</then>
<else>
<package-helper />
</else>
</if>
</do-only-if-not-library>
</target>
<target name="-post-package-resources">
<property name="second_dex" value="classes2.dex" />
<property name="third_dex" value="classes3.dex" />
<property name="second_dex_path" value="${out.absolute.dir}/${second_dex}" />
<if>
<condition>
<and>
<available file="${second_dex_path}" />
<or>
<not>
<uptodate srcfile="${second_dex_path}" targetfile="${out.absolute.dir}/${resource.package.file.name}" />
</not>
<uptodate srcfile="${out.absolute.dir}/${resource.package.file.name}" targetfile="${out.absolute.dir}/${resource.package.file.name}.d" />
</or>
</and>
</condition>
<then>
<echo>Adding classes2.dex to ${resource.package.file.name}</echo>
<exec executable="${aapt}" dir="${out.absolute.dir}" failonerror="true">
<arg line='add -v "${out.absolute.dir}/${resource.package.file.name}" ${second_dex}'/>
</exec>
<if>
<condition>
<available file="${out.absolute.dir}/classes3.dex"/>
</condition>
<then>
<echo>Adding classes3.dex to ${resource.package.file.name}</echo>
<exec executable="${aapt}" dir="${out.absolute.dir}" failonerror="true">
<arg line='add -v "${out.absolute.dir}/${resource.package.file.name}" ${third_dex}'/>
</exec>
</then>
</if>
</then>
</if>
</target>
<!-- builds dex in regular way and if it fails, switches to multidex-->
<macrodef name="dex-helper">
<element name="external-libs" optional="yes" />
<attribute name="nolocals" default="false" />
<sequential>
<condition property="verbose.option" value="--verbose" else="">
<istrue value="${verbose}" />
</condition>
<condition property="jumbo.option" value="--force-jumbo" else="">
<istrue value="${dex.force.jumbo}" />
</condition>
<!-- Regular DEX process. We would prefer to use the Android SDK
ANT target, but we need to detect the "use multidex" error.
https://android.googlesource.com/platform/sdk/+/tools_r21.1/anttasks/src/com/android/ant/DexExecTask.java
-->
<mapper id="pre-dex-mapper" type="glob" from="libs/*.jar" to="bin/dexedLibs/*-dexed.jar"/>
<apply executable="${dx}" failonerror="true" parallel="false" dest="${out.dexed.absolute.dir}" relative="true">
<arg value="--dex" />
<arg value="--output" />
<targetfile/>
<arg line="${jumbo.option}" />
<arg line="${verbose.option}" />
<fileset dir="." includes="libs/*" />
<external-libs />
<mapper refid="pre-dex-mapper"/>
</apply>
<apply executable="${dx}" resultproperty="dex.merge.result" outputproperty="dex.merge.output" parallel="true">
<arg value="--dex" />
<arg value="--output=${intermediate.dex.file}" />
<arg line="${jumbo.option}" />
<arg line="${verbose.option}" />
<path path="${out.dex.input.absolute.dir}"/>
<path refid="out.dex.jar.input.ref" />
<external-libs />
</apply>
<if>
<condition>
<or>
<contains string="${dex.merge.output}" substring="Too many field references"/>
<contains string="${dex.merge.output}" substring="Too many method references"/>
</or>
</condition>
<then>
<echo message="Number of field or method references is too big. Switching to multi-dex build." />
<multi-dex-helper>
<external-libs>
<external-libs/>
</external-libs>
</multi-dex-helper>
</then>
<else>
<echo message="${dex.merge.output}"/>
<fail status="${dex.merge.result}">
<condition>
<not>
<equals arg1="${dex.merge.result}" arg2="0"/>
</not>
</condition>
</fail>
</else>
</if>
</sequential>
</macrodef>
<macrodef name="multi-dex-helper">
<element name="external-libs" optional="yes" />
<sequential>
<property name="mainDexClasses" location="${android.build.tools.dir}/mainDexClasses" />
<exec executable="${mainDexClasses}" failonerror="true" >
<arg line="--output ${out.absolute.dir}/classes_to_kepp_in_main_dex"/>
<arg file="${out.absolute.dir}/proguard/obfuscated.jar"/>
</exec>
<echo>Converting compiled files and external libraries into ${out.absolute.dir} (multi-dex)</echo>
<echo>Dexing ${out.classes.absolute.dir} and ${toString:out.dex.jar.input.ref}</echo>
<apply executable="${dx}" failonerror="true" parallel="true">
<arg value="--dex" />
<arg value="--multi-dex" />
<arg value="--main-dex-list=${out.absolute.dir}/classes_to_kepp_in_main_dex" />
<arg value="--output=${out.absolute.dir}" />
<arg line="${jumbo.option}" />
<arg line="${verbose.option}" />
<arg path="${out.absolute.dir}/proguard/obfuscated.jar" />
<path refid="out.dex.jar.input.ref" />
<external-libs />
</apply>
</sequential>
</macrodef>
... your build script ...
<!-- version-tag: custom -->
<!-- (1) Override -package target to add additional JAR to the apk -->
<property name="multidex-secondary-classes.jar" value="classes-secondary.jar" />
<target name="-package" depends="-dex, -package-resources, -create-multidex-secondary-classes-jar">
<!-- Copied from SDK/tools/ant/build.xml -->
<!-- only package apk if *not* a library project -->
<do-only-if-not-library elseText="Library project: do not package apk..." >
<if condition="${build.is.instrumented}">
<then>
<package-helper>
<extra-jars>
<!-- Injected from external file -->
<jarfile path="${emma.dir}/emma_device.jar" />
</extra-jars>
</package-helper>
</then>
<else>
<!-- We can finesse apkbuilder by putting secondary classes file(s) in a jar file -->
<if condition="${build.is.multidex}">
<then>
<package-helper>
<extra-jars>
<jarfile path="${out.dir}/${multidex-secondary-classes.jar}" />
</extra-jars>
</package-helper>
</then>
<else>
<package-helper>
<extra-jars />
</package-helper>
</else>
</if>
</else>
</if>
</do-only-if-not-library>
</target>
<!-- (2) Create a JAR file of the secondary classes*.dex files -->
<target name="-create-multidex-secondary-classes-jar" if="${build.is.multidex}">
<jar destfile="${out.dir}/${multidex-secondary-classes.jar}"
basedir="${out.dir}"
includes="classes*.dex"
excludes="classes.dex"
filesonly="true"
/>
</target>
<!-- Standard import of Android build.xml -->
<import file="${sdk.dir}/tools/ant/build.xml" />
<!-- (3) Replacement of "dex-helper" to support multidex -->
<macrodef name="dex-helper">
<element name="external-libs" optional="yes" />
<attribute name="nolocals" default="false" />
<sequential>
<!-- sets the primary input for dex. If a pre-dex task sets it to
something else this has no effect -->
<property name="out.dex.input.absolute.dir" value="${out.classes.absolute.dir}" />
<!-- set the secondary dx input: the project (and library) jar files
If a pre-dex task sets it to something else this has no effect -->
<if>
<condition>
<isreference refid="out.dex.jar.input.ref" />
</condition>
<else>
<path id="out.dex.jar.input.ref">
<path refid="project.all.jars.path" />
</path>
</else>
</if>
<if condition="${build.is.multidex}" >
<then>
<if condition="${dex.force.jumbo}" >
<else>
<fail message="The following assumes dex.force.jumbo is true" />
</else>
</if>
<apply executable="${dx}" failonerror="true" parallel="true">
<arg value="--dex" />
<arg value="--force-jumbo" />
<!-- Specify a multi-dex APK -->
<arg value="--multi-dex" />
<!-- For multidex output to a folder -->
<arg value="--output" />
<arg value="${out.dir}" />
<path path="${out.dex.input.absolute.dir}" />
</apply>
</then>
<else>
<!-- The value from SDK/tools/ant/build.xml -->
<dex executable="${dx}"
output="${intermediate.dex.file}"
dexedlibs="${out.dexed.absolute.dir}"
nolocals="@{nolocals}"
forceJumbo="${dex.force.jumbo}"
disableDexMerger="${dex.disable.merger}"
verbose="${verbose}">
<path path="${out.dex.input.absolute.dir}"/>
<path refid="out.dex.jar.input.ref" />
<external-libs />
</dex>
</else>
</if>
</sequential>
</macrodef>
<property name="multidex-main-dex-list.file"
value="bin/multidex-main-dex-list.txt" />
<target name="-create-multidex-main-list" if="${build.is.multidex}">
<delete file="${multidex-main-dex-list.file}" />
<copy file="${out.dir}/proguard/dump.txt"
tofile="${multidex-main-dex-list.file}" >
<filterchain>
<!-- Convert classes to the right format -->
<tokenfilter>
<containsregex
pattern="^..Program class..(.*)"
replace="\1.class"/>
</tokenfilter>
<!-- Exclude Google Play Services -->
<linecontains negate="true">
<contains value="com/google/android/gms/"/>
</linecontains>
</filterchain>
</copy>
</target>
android/support/multidex/MultiDex.class android/support/multidex/MultiDex$V14.class android/support/multidex/MultiDex$V19.class android/support/multidex/MultiDex$V4.class android/support/multidex/MultiDexApplication.class android/support/multidex/MultiDexExtractor.class android/support/multidex/MultiDexExtractor$1.class android/support/multidex/ZipUtil.class android/support/multidex/ZipUtil$CentralDirectory.class
- dkneller