我有Android Studio Beta版。我创建了一个新项目,编译我的旧模块,但当我尝试启动应用程序时,它没有启动消息:

Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.

dexarchiivemergenerexception:无法合并dex

但是我不知道如何解决这个错误。我在谷歌上搜索了几个小时,但没有成功。

我的项目gradle:

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

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0-beta6'
        classpath "io.realm:realm-gradle-plugin:3.7.1"
        classpath 'com.google.gms:google-services:3.1.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        google()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

我的应用程序gradle:

    apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
    defaultConfig {
        applicationId "parad0x.sk.onlyforyou"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
        }
    }
    compileOptions {
        targetCompatibility 1.7
        sourceCompatibility 1.7
    }
    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/NOTICE'
    }
    lintOptions {
        checkReleaseBuilds false
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    //noinspection GradleCompatible
    compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
    compile project(path: ':loginregisterview')


}

我的模块gradle:

    apply plugin: 'com.android.library'
apply plugin: 'realm-android'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"

    defaultConfig {
        minSdkVersion 19
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.0.2'
    compile 'com.android.support:support-v4:26.1.0'
    compile 'com.github.bumptech.glide:glide:4.0.0'
    testCompile 'junit:junit:4.12'
    compile project(path: ':parser')

}

我的第二个模块:

     apply plugin: 'com.android.library'
apply plugin: 'realm-android'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }

    realm {
        syncEnabled = true
    }
    useLibrary 'org.apache.http.legacy'

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile 'junit:junit:4.12'
    //  compile 'com.android.support:appcompat-v7:23.1.0'

    //   compile 'com.fasterxml.jackson.core:jackson-core:2.9.0'
 //   compile 'com.fasterxml.jackson.core:jackson-annotations:2.9.0'
 //   compile 'com.fasterxml.jackson.core:jackson-databind:2.9.0'
    compile 'com.google.code.gson:gson:2.6.2'
}

____________ finding_________

当我没有导入第二个模块(解析器)时,应用程序没有在dex上崩溃,但当模块没有导入时,应用程序无法工作。: D: D


当前回答

只需在app/build.gradle中添加这一行

defaultConfig {
       multiDexEnabled true 
    }

其他回答

注意警告!

有时你只需要消除警告,错误就会自动消失。特殊情况见下文:


在我的模块级构建中有这两个依赖项。gradle文件:

implementation 'com.android.support:appcompat-v7:27.0.2'
implementation 'com.android.support:recyclerview-v7:27.0.2'

和工作室已经警告(除了dex合并问题):

所有com.android.support库必须使用完全相同的版本规范(混合版本会导致运行时崩溃)。找到27.0.2、21.0.3版本。例如com.android.support:animated-vector-drawable:27.0.2和com.android.support:support-v4:21.0.3

所以我明确地确定了com.android的版本。支持:Support -v4(详情请参阅这里),两个问题(警告和与dex合并相关的问题)都解决了:

implementation 'com.android.support:support-v4:27.0.2'  // Added this line (according to above warning message)
implementation 'com.android.support:appcompat-v7:27.0.2'
implementation 'com.android.support:recyclerview-v7:27.0.2'

其他类似情况请参见下面的评论。

这对我很有用

最后在平台\android\build.gradle中添加代码

configurations.all { 
 resolutionStrategy{
    force 'com.android.support:support-v4:26.0.0'
    }

    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
    def requested = details.requested
    if (requested.group == 'com.android.support') {
       if (!requested.name.startsWith("multidex")) {
      details.useVersion '26.0.0'
     }
   }
  }
}

对我来说,问题是我在项目中包含的两个jar中有相同的类。

对于其中一个罐子,我需要排除类:

jar {
    exclude('com/files/to/exclude/**')
}

将buildToolsVersion更改为其他版本并同步,将其更改回来并再次同步。它会再次工作的。

    apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.xyz.name"
        minSdkVersion 14
        targetSdkVersion 27
        versionCode 7
        versionName "1.6"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    implementation 'com.android.volley:volley:1.0.0'
    implementation 'com.wang.avi:library:2.1.3'
    implementation 'com.android.support:design:27.1.0'
    implementation 'com.android.support:support-v4:27.1.0'
    implementation 'de.hdodenhof:circleimageview:2.1.0'
    implementation 'com.github.bumptech.glide:glide:3.7.0'
    implementation 'com.theartofdev.edmodo:android-image-cropper:2.6.0'
    implementation 'com.loopj.android:android-async-http:1.4.9'
    implementation 'com.google.firebase:firebase-messaging:11.8.0'
    implementation 'com.felipecsl.asymmetricgridview:library:2.0.1'
    implementation 'com.android.support:recyclerview-v7:27.1.0'
    implementation 'com.github.darsh2:MultipleImageSelect:3474549'
    implementation 'it.sephiroth.android.library.horizontallistview:hlistview:1.2.2'
    implementation 'com.android.support:multidex:1.0.1'
}

apply plugin: 'com.google.gms.google-services'

注意:像上面一样更新你所有的支持库到27.1.0并删除重复