blocks|key|57329|text|要启动多重dexing，需要执行以下步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|57330|将android-support-multidex.jar添加到项目中。该jar可以在Android+SDK文件夹/sdk/extras/android/support/multidex/library/libs中找到|57331|现在，您可以让应用程序应用程序类扩展MultiDexApplication|57332|public+class+MyApplication+extends+MultiDexApplication|code-block|syntax|javascript|57333|或者像这样覆盖attachBaseContext：|57334|protected+void+attachBaseContext(Context+base)+{
+super.attachBaseContext(base);
+MultiDex.install(this);
}|57335|我使用覆盖方法，因为它不会扰乱应用程序类的类层次结构。|57336|现在你的应用程序已经准备好使用multi了。下一步是说服gradle构建一个多解的apk。构建工具团队正在努力让这一切变得更容易，但目前你需要在你的应用程序build.gradle的安卓部分添加以下内容|57337|+++dexOptions+{
++++++preDexLibraries+=+false
+++}|57338|和以下内容添加到应用程序build.gradle的常规部分|57339|afterEvaluate+{
+++tasks.matching+{
++++++it.name.startsWith('dex')
+++}.each+{+dx+->
++++++if+(dx.additionalParameters+==+null)+{
+++++++++dx.additionalParameters+=+['--multi-dex']
++++++}+else+{
+++++++++dx.additionalParameters+%2B=+'--multi-dex'
++++++}
+++}
}|57340|更多信息可以在Alex+Lipovs+blog上找到。|offset|length|57341|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.osom.info/2014/10/multi-dex-to-rescue-from-infamous-65536.html^0|0|0|0|0|0|0|0|0|0|0|0|7|G|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1C|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|1D|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|1E|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|1F|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1H|8|@]|9|@]|A|$]]|$1|S|3|T|5|H|7|1I|8|@]|9|@]|A|$I|J]]|$1|U|3|V|5|6|7|1J|8|@]|9|@]|A|$]]|$1|W|3|X|5|H|7|1K|8|@]|9|@]|A|$I|J]]|$1|Y|3|Z|5|6|7|1L|8|@]|9|@$10|1M|11|1N|1|1O]]|A|$]]|$1|12|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]]|13|$14|$5|15|16|17|A|$18|19]]]]

The following steps are needed to start multi dexing: 

Add android-support-multidex.jar to your project. The jar can be found in your Android SDK folder /sdk/extras/android/support/multidex/library/libs

Now you either let your apps application class extend MultiDexApplication

<pre><code>public class MyApplication extends MultiDexApplication
</code></pre>

or you override attachBaseContext like this:

<pre><code>protected void attachBaseContext(Context base) {
 super.attachBaseContext(base);
 MultiDex.install(this);
}
</code></pre>

I used the override approach because that does not mess with the class hierarchy of your application class.

Now your app is ready to use multi dex. The next step is to convince gradle to build a multi dexed apk. The build tools team is working on making this easier, but for the moment you need to add the following to the android part of your apps build.gradle

<pre><code> dexOptions {
 preDexLibraries = false
 }
</code></pre>

And the following to the general part of your apps build.gradle

<pre><code>afterEvaluate {
 tasks.matching {
 it.name.startsWith('dex')
 }.each { dx -&gt;
 if (dx.additionalParameters == null) {
 dx.additionalParameters = ['--multi-dex']
 } else {
 dx.additionalParameters += '--multi-dex'
 }
 }
}
</code></pre>

More info can be found on <a href="http://blog.osom.info/2014/10/multi-dex-to-rescue-from-infamous-65536.html" rel="noreferrer">Alex Lipovs blog</a>.

blocks|key|4563757|text|简单地说，为了启用multidex，您需要...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4563758|android+{
compileSdkVersion+21
buildToolsVersion+"21.1.0"

defaultConfig+{
++++...
++++minSdkVersion+14
++++targetSdkVersion+21
++++...

++++//+Enabling+multidex+support.
++++multiDexEnabled+true
}
...
}

dependencies+{
implementation+'com.android.support:multidex:1.0.0'
}|code-block|syntax|javascript|4563759|此外，您还必须更改清单文件。在清单中，将multidex支持库中的MultiDexApplication类添加到应用程序元素中，如下所示|4563760|<?xml+version="1.0"+encoding="utf-8"?>
<manifest+xmlns:android="http://schemas.android.com/apk/res/android"
+++package="com.example.android.multidex.myapplication">
+++<application
+++++++...
+++++++android:name="android.support.multidex.MultiDexApplication">
+++++++...
+++</application>
</manifest>|4563761|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

SIMPLY, in order to enable multidex, you need to ...

<pre><code>android {
compileSdkVersion 21
buildToolsVersion "21.1.0"

defaultConfig {
 ...
 minSdkVersion 14
 targetSdkVersion 21
 ...

 // Enabling multidex support.
 multiDexEnabled true
}
...
}

dependencies {
implementation 'com.android.support:multidex:1.0.0'
}
</code></pre>

also you must change your manifest file. In your manifest add the MultiDexApplication class from the multidex support library to the application element like this 

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.android.multidex.myapplication"&gt;
 &lt;application
 ...
 android:name="android.support.multidex.MultiDexApplication"&gt;
 ...
 &lt;/application&gt;
&lt;/manifest&gt;
</code></pre>

blocks|key|57460|text|如果你想在你的项目中启用多点索引，那么只需转到gradle.builder|type|unstyled|depth|inlineStyleRanges|entityRanges|data|57461|并将此添加到您的依赖项中|57462|+dependencies+{
+++compile+'com.android.support:multidex:1.0.0'}|code-block|syntax|javascript|57463|然后你必须添加|57464|+defaultConfig+{
...
minSdkVersion+14
targetSdkVersion+21
...

//+Enabling+multidex+support.
multiDexEnabled+true}|57465|然后打开一个类并将其扩展到应用程序如果您的应用程序使用扩展Application类，则可以覆盖oncrete()方法并调用|57466|+++MultiDex.install(this)+|57467|以启用multidex。|57468|最后添加到您的清单中|57469|+<?xml+version="1.0"+encoding="utf-8"?>
+<manifest+xmlns:android="http://schemas.android.com/apk/res/android"
++++package="com.example.android.multidex.myapplication">
++++<application
+++...
+++++android:name="android.support.multidex.MultiDexApplication">
+++...
+++</application>
+</manifest>+|57470|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|14|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|17|8|@]|9|@]|A|$G|H]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

If you want to enable multi-dex in your project then just go to gradle.builder 

and add this in your dependencie 

<pre><code> dependencies {
 compile 'com.android.support:multidex:1.0.0'}
</code></pre>

then you have to add 

<pre><code> defaultConfig {
...
minSdkVersion 14
targetSdkVersion 21
...

// Enabling multidex support.
multiDexEnabled true}
</code></pre>

Then open a class and extand it to Application
If your app uses extends the Application class, you can override the oncrete() method and call

<pre><code> MultiDex.install(this) 
</code></pre>

to enable multidex.

and finally add into your manifest

<pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.android.multidex.myapplication"&gt;
 &lt;application
 ...
 android:name="android.support.multidex.MultiDexApplication"&gt;
 ...
 &lt;/application&gt;
 &lt;/manifest&gt; 
</code></pre>

blocks|key|57502|text|添加到AndroidManifest.xml：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|57503|android:name="android.support.multidex.MultiDexApplication"+|code-block|syntax|javascript|57504|或|57505|MultiDex.install(this);|57506|在自定义应用程序的attachBaseContext方法中|57507|或您的自定义应用程序扩展MultiDexApplication|57508|在build.gradle中添加multiDexEnabled+=+true|57509|defaultConfig+{
++++multiDexEnabled+true
}

dependencies+{
++++compile+'com.android.support:multidex:1.0.0'
++++}
}|57510|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Add to AndroidManifest.xml:

<pre><code>android:name="android.support.multidex.MultiDexApplication" 
</code></pre>

OR

<pre><code>MultiDex.install(this);
</code></pre>

in your custom Application's attachBaseContext method

or your custom Application extend MultiDexApplication

add multiDexEnabled = true in your build.gradle

<pre><code>defaultConfig {
 multiDexEnabled true
}

dependencies {
 compile 'com.android.support:multidex:1.0.0'
 }
}
</code></pre>

blocks|key|4563939|text|只需在build.gradle中添加这段代码也可以正常工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4563940|android+{
+++compileSdkVersion+22
+++buildToolsVersion+"23.0.0"

+++++defaultConfig+{
+++++++++minSdkVersion+14+//lower+than+14+doesn't+support+multidex
+++++++++targetSdkVersion+22

+++++++++**//+Enabling+multidex+support.
+++++++++**multiDexEnabled+true****
+++++}
}|code-block|syntax|javascript|4563941|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

just adding this snipped in the build.gradle also works fine

<pre><code>android {
 compileSdkVersion 22
 buildToolsVersion "23.0.0"

 defaultConfig {
 minSdkVersion 14 //lower than 14 doesn't support multidex
 targetSdkVersion 22

 **// Enabling multidex support.
 **multiDexEnabled true****
 }
}
</code></pre>

blocks|key|4563959|text|首先，你应该尝试使用Proguard+(这会清除所有未使用的代码)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4563960|android+{
++++compileSdkVersion+25
++++buildToolsVersion+"25.0.2"

++++defaultConfig+{
++++++++minSdkVersion+16
++++++++targetSdkVersion+25
++++++++versionCode+1
++++++++versionName+"1.0"

++++++++testInstrumentationRunner+"android.support.test.runner.AndroidJUnitRunner"
++++++++multiDexEnabled+true
++++}
++++buildTypes+{
++++++++release+{
++++++++++++minifyEnabled+true
++++++++++++proguardFiles+getDefaultProguardFile('proguard-android.txt'),+'proguard-rules.pro'
++++++++}
++++}
}|code-block|syntax|javascript|4563961|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

First you should try with Proguard (This clean all code unused)

<pre><code>android {
 compileSdkVersion 25
 buildToolsVersion "25.0.2"

 defaultConfig {
 minSdkVersion 16
 targetSdkVersion 25
 versionCode 1
 versionName "1.0"

 testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 multiDexEnabled true
 }
 buildTypes {
 release {
 minifyEnabled true
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 }
}
</code></pre>

blocks|key|4563969|text|Multi_Dex.java|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4563970|public+class+Multi_Dex+extends+Application+{
++++@Override
++++protected+void+attachBaseContext(Context+base)+{
++++++++super.attachBaseContext(base);
++++++++MultiDex.install(this);
++++}
}|code-block|syntax|javascript|4563971|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Multi_Dex.java

<pre><code>public class Multi_Dex extends Application {
 @Override
 protected void attachBaseContext(Context base) {
 super.attachBaseContext(base);
 MultiDex.install(this);
 }
}
</code></pre>

blocks|key|4563976|text|build.gradle|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4563977|multiDexEnabled+true
implementation+'androidx.multidex:multidex:2.0.1'|code-block|syntax|javascript|4563978|AndroidManifest.xml|4563979|<application
++++android:name="androidx.multidex.MultiDexApplication"|4563980|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

build.gradle

<pre><code>multiDexEnabled true
implementation 'androidx.multidex:multidex:2.0.1'
</code></pre>

AndroidManifest.xml

<pre><code>&lt;application
 android:name="androidx.multidex.MultiDexApplication"
</code></pre>

blocks|key|57627|text|上面所有的答案都很棒|type|unstyled|depth|inlineStyleRanges|entityRanges|data|57628|也添加这个，否则你的应用程序会像我的一样无缘无故崩溃|57629|compileOptions+{
++++sourceCompatibility+JavaVersion.VERSION_1_8
++++targetCompatibility+JavaVersion.VERSION_1_8
}|code-block|syntax|javascript|57630|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

All answers above are awesome
Also add this otherwise your app will crash like mine without any reason
<pre><code>compileOptions {
 sourceCompatibility JavaVersion.VERSION_1_8
 targetCompatibility JavaVersion.VERSION_1_8
}
</code></pre>

blocks|key|4564012|text|在androidx中，经典的支持库不再有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4564013|简单的解决方案是使用以下代码|4564014|在build.gradle文件中|offset|length|style|CODE|4564015|android{
++...
++...
++defaultConfig+{
+++++...
+++++...
+++++multiDexEnabled+true
++}
++...
}

dependencies+{
++...
++...
++implementation+'androidx.multidex:multidex:2.0.1'
}|code-block|syntax|javascript|4564016|在清单中，只需将name属性添加到应用程序标记|4564017|<manifest+...>
++++<application
++++++++android:name="androidx.multidex.MultiDexApplication"
+++++...
+++++...>
+++++++++...
+++++++++...
++++</application>
</manifest>|4564018|如果您的应用程序以API+21或更高版本为目标，则默认情况下会启用multidex。|4564019|现在，如果您想摆脱您在尝试支持多索引时所面临的许多问题，请首先尝试通过设置minifyEnabled+true来使用代码收缩。|4564020|entityMap^0|0|0|1|C|0|0|0|0|0|11|I|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@$F|11|G|12|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|13|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|L|7|15|8|@]|9|@]|A|$M|N]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|17|8|@$F|18|G|19|H|I]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|X|$]]

With androidx, the classic support libraries no longer work.
Simple solution is to use following code
In your <code>build.gradle</code> file
<pre><code>android{
 ...
 ...
 defaultConfig {
 ...
 ...
 multiDexEnabled true
 }
 ...
}

dependencies {
 ...
 ...
 implementation 'androidx.multidex:multidex:2.0.1'
}
</code></pre>
And in your manifest just add name attribute to the application tag
<pre><code>&lt;manifest ...&gt;
 &lt;application
 android:name=&quot;androidx.multidex.MultiDexApplication&quot;
 ...
 ...&gt;
 ...
 ...
 &lt;/application&gt;
&lt;/manifest&gt;
</code></pre>
If your application is targeting API 21 or above multidex is enables by default.
Now if you want to get rid of many of the issues you face trying to support multidex - first try using code shrinking by setting <code>minifyEnabled true</code>.

I want to use the new Multidex support library to break the method limit for one of my apps. 

With Android Lollipop Google introduced a multidex support library that makes it easy to multidex. 

What steps are needed to use this library and to build my app with multidex support?

How to enable multidexing with the new Android Multidex support library

Android

我想使用新的Multidex支持库来打破我的一个应用程序的方法限制。通过Android棒棒糖，谷歌引入了一个multidex支持库，使得multidex变得很容易。要使用此库并构建支持multidex的应用程序，需要执行哪些步骤？

问如何使用新的Android Multidex支持库启用多索引
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何使用新的Android Multidex支持库启用多索引EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何使用新的Android Multidex支持库启用多索引
EN