Android开发之 MultiDex （apk中生成多个dex、dex分包）

本文详细介绍如何在Android Studio中配置MultiDex，包括Gradle配置、multiDexKeep.txt文件生成及Application中调用MultiDex的方法，解决DexArchiveMergerException问题。

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MultiDex示例：

AndroidStudio中MultiDex配置：

1、grandle配置

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.zq.multidexdemo"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

        multiDexEnabled true
        setMultiDexKeepFile file("multidexkeepfile.txt")
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation "com.android.support:multidex:1.0.1"
}

2、multiDexKeep.txt文件,生成工具 ApkClasses.exe

备注：若出现DexArchiveMergerException，则为multiDexKeep.txt中的类路径、或名称配置有问题

Caused by: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: D:\sci\ADT\workspace\**

Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete

Caused by: com.android.tools.r8.utils.AbortException

3、Application中调用MultiDex

package com.ltsdk.union;
 
import android.app.Application;
import android.content.Context;
import android.support.multidex.MultiDex;
 
 
// 自定义 Application
public class LtsdkApplication extends Application {
 
    @Override
    public void onCreate() {
        super.onCreate();
    }
 
    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);        // 调用MutiDex
    }
}