java 如何为 React Native 启用 multidex？

How do I enable multidex for react native?

提问by Kloar

I'm pretty sure its a built in feature but I cant find anything when searching or in the docs. Is there a flag for building with multidex enabled?

我很确定它是一个内置功能，但在搜索或在文档中找不到任何东西。是否有启用 multidex 的构建标志？

On another note: Any way to see which libraries are messing with your method count? Hitting the 64k limit came as quite a surprise.

另一个注意事项：有什么方法可以查看哪些库与您的方法计数混淆了？达到 64k 的限制是非常令人惊讶的。

采纳答案by Kloar

Found the answer somewhere else. It's no different than enabling it for any regular Android project.

在别处找到了答案。这与为任何常规 Android 项目启用它没有什么不同。

android {
    ....
    defaultConfig {
        ...
        multiDexEnabled true
    }

As for method count, this site does the trick: http://inloop.github.io/apk-method-count/

至于方法计数，这个站点可以解决问题：http: //inloop.github.io/apk-method-count/

回答by Brandon

For RN 0.59+ and using Gradle 3.4.1, none of the answers here had the complete solution. I did the following and it worked:

对于 RN 0.59+ 和使用 Gradle 3.4.1，这里的答案都没有完整的解决方案。我做了以下事情，它奏效了：

1. In android/app/build.gradle, update the dependencyblock:

   dependencies {
       // ... your other dependencies
   
       // Multidex
       implementation 'com.android.support:multidex:1.0.3'
   }
   

   And also update the defaultConfigin the androidblock:

   defaultConfig {
       // ... your `applicationId`, etc.
       multiDexEnabled true
   }
   

2. In MainApplication.java, replace

   import android.app.Application;
   

   at the top with

   import android.support.multidex.MultiDexApplication;
   

   ORif you're on RN 0.60+ or have manually upgraded to AndroidXthen use this instead:

   import androidx.multidex.MultiDexApplication;
   

3. Still in MainApplication.java, replace

   public class MainApplication extends Application implements ReactApplication {
   

   with

   public class MainApplication extends MultiDexApplication implements ReactApplication {
   

1. 在 中android/app/build.gradle，更新dependency块：

   dependencies {
       // ... your other dependencies
   
       // Multidex
       implementation 'com.android.support:multidex:1.0.3'
   }
   

   并同时更新defaultConfig的android块：

   defaultConfig {
       // ... your `applicationId`, etc.
       multiDexEnabled true
   }
   

2. 在MainApplication.java，替换

   import android.app.Application;
   

   在顶部与

   import android.support.multidex.MultiDexApplication;
   

   或者，如果您使用的是 RN 0.60+ 或已手动升级到AndroidX，请改用它：

   import androidx.multidex.MultiDexApplication;
   

3. 还在MainApplication.java，替换

   public class MainApplication extends Application implements ReactApplication {
   

   和

   public class MainApplication extends MultiDexApplication implements ReactApplication {
   

回答by Alex Lévy

android/app/build.gradle

android/app/build.gradle

android {
    ....
    defaultConfig {
        ...
        multiDexEnabled true
    }

If you are using Multidex, your Application should extends MultiDexApplication instead of Application.

如果您使用 Multidex，您的应用程序应该扩展 MultiDexApplication 而不是应用程序。

MyApplication.java

我的应用程序

import android.support.multidex.MultiDexApplication;

public class MyApplication extends MultiDexApplication{
     ...
}

回答by LordParsley

Since Applicationmust extend ReactApplication, I used a similar approach to the one suggested herewhich is documented in point 2 in the Android Developer reference on multidexto attach to the base context:

由于Applicationmust extend ReactApplication，我使用了与此处建议的方法类似的方法，该方法在 Android 开发人员参考 multidex中的第 2 点中记录，以附加到基本上下文：

app/build.gradle

应用程序/build.gradle

android {
    compileSdkVersion projectCompileSdkVersion // Or your version

    defaultConfig {
        minSdkVersion projectMinSdkVersion // Or your version
        targetSdkVersion projectTargetSdkVersion // Or your version
        multiDexEnabled true // *
    }
    dexOptions {
        jumboMode true // *
    }
}

dependencies {
  compile 'com.android.support:multidex:1.0.3' // https://mvnrepository.com/artifact/com.android.support/multidex
}

MainApplication.java

主应用程序

@Override
protected void attachBaseContext(Context base) {
    super.attachBaseContext(base);
    MultiDex.install(this);
}

回答by Aung Myint Thein

However, if your minSdkVersion is set to 20 or lower, then you must use the multidex support library as follows:

但是，如果您的 minSdkVersion 设置为 20 或更低，那么您必须使用 multidex 支持库，如下所示：

android {
    defaultConfig {
        ...
        minSdkVersion 15 
        targetSdkVersion 26
        multiDexEnabled true
    }
    ...
}

dependencies {
  compile 'com.android.support:multidex:1.0.3'
}

https://developer.android.com/studio/build/multidex

https://developer.android.com/studio/build/multidex