Question

当我尝试构建项目时出现这些错误，看起来好像我有两个相同的库，但是我不确定为什么：

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.legacy:legacy-support-core-utils:1.0.0.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.appcompat:appcompat:1.0.1.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.legacy:legacy-support-v4:1.0.0.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.inject:guice:4.1.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.firebase:firebase-appindexing:16.0.2.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.android.gms:play-services-analytics:16.0.5.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.android.gms:play-services-ads:17.0.0.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-runtime:2.0.0.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-extensions:2.0.0.
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Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve androidx.room:room-runtime:2.1.0-alpha02.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-core-utils:1.0.0.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.appcompat:appcompat:1.0.1.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-v4:1.0.0.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.inject:guice:4.1.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.firebase:firebase-appindexing:16.0.2.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.android.gms:play-services-analytics:16.0.5.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.google.android.gms:play-services-ads:17.0.0.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-runtime:2.0.0.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-extensions:2.0.0.
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Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve androidx.room:room-runtime:2.1.0-alpha02.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-core-utils:1.0.0.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.appcompat:appcompat:1.0.1.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-v4:1.0.0.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.inject:guice:4.1.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.firebase:firebase-appindexing:16.0.2.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.android.gms:play-services-analytics:16.0.5.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.google.android.gms:play-services-ads:17.0.0.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-runtime:2.0.0.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-extensions:2.0.0.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.room:room-runtime:2.1.0-alpha02.
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Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve androidx.room:room-testing:2.1.0-alpha02.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.legacy:legacy-support-core-utils:1.0.0.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.appcompat:appcompat:1.0.1.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.legacy:legacy-support-v4:1.0.0.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.google.inject:guice:4.1.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.google.firebase:firebase-appindexing:16.0.2.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.google.android.gms:play-services-analytics:16.0.5.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.google.android.gms:play-services-ads:17.0.0.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-runtime:2.0.0.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-extensions:2.0.0.
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Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve androidx.room:room-runtime:2.1.0-alpha02.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-core-utils:1.0.0.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.appcompat:appcompat:1.0.1.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.legacy:legacy-support-v4:1.0.0.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.inject:guice:4.1.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.firebase:firebase-appindexing:16.0.2.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.android.gms:play-services-analytics:16.0.5.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.google.android.gms:play-services-ads:17.0.0.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-runtime:2.0.0.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.lifecycle:lifecycle-extensions:2.0.0.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.room:room-runtime:2.1.0-alpha02.
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Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve androidx.room:room-testing:2.1.0-alpha02.
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这是我的build.gradle文件

apply plugin: 'com.android.application'

android {
compileSdkVersion 28
buildToolsVersion '28.0.3'

defaultConfig {
    applicationId "com.andydaykin.timer"
    minSdkVersion 24
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"

}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
    }
    dexOptions {
        // release & debug is in project animators
        matchingFallbacks = ['release', 'debug']
    }
    debug {
        debuggable true
    }
}
compileOptions {
    targetCompatibility 1.10
    sourceCompatibility 1.10
}
}

allprojects {
repositories {
    google()
    jcenter()
    maven { url 'https://maven.google.com' }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
testImplementation 'junit:junit:4.12'

implementation ('androidx.legacy:legacy-support-core-utils:1.0.0') {
    force = true
}
implementation 'androidx.appcompat:appcompat:1.0.1'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'

implementation 'com.google.guava:guava:24.1-jre'
implementation 'com.google.inject:guice:4.1'
implementation 'com.google.firebase:firebase-appindexing:16.0.2'
implementation 'com.google.android.gms:play-services-analytics:16.0.5'
implementation 'com.google.android.gms:play-services-ads:17.0.0'

implementation "androidx.lifecycle:lifecycle-runtime:2.0.0"
implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
annotationProcessor "androidx.lifecycle:lifecycle-compiler:2.0.0"

def room_version = "2.1.0-alpha02"

implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"

testImplementation "androidx.room:room-testing:$room_version"
}

这是我的顶级gradle构建文件：

{

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

buildscript {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
        google()
}
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'

        // NOTE: Do not place your application dependencies here; they 
belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
        google()
    }
}

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

}

我认为这个错误是在升级到android studio后发生的，但我不确定。我的android studio版本现在是3.2.1。我能够使这个项目以前构建。

Answer 1

在您的顶级Gradle 文件中，添加Google服务插件的类路径。

dependencies {
    classpath 'com.android.tools.build:gradle:3.2.1'
    classpath 'com.google.gms:google-services:4.0.1'
}

您应该检查Internet连接，代理或防火墙。

OR

通过交叉检查按照以下步骤禁用Gradle Offline。

Windows：

设置>等级>禁用离线工作

Mac：

首选项>构建，执行，部署> Gradle>禁用离线工作

Answer 2

另外，请在此处检查：https://stackoverflow.com/a/53716633/8034839和React Native : Could not find com.android.tools.build:gradle:2.2.3可能会有帮助
它与AndroidX迁移有关。

尝试以下https://developer.android.com/jetpack/androidx/migrate

的解决方案

使用Android Studio迁移现有项目

在Android Studio 3.2及更高版本中，您可以通过从菜单栏中选择重构> 迁移到AndroidX 来快速迁移现有项目以使用AndroidX。

如果您有任何尚未迁移到AndroidX命名空间的Maven依赖项，则在gradle.properties文件中将以下两个标志设置为true时，Android Studio构建系统也会为您迁移这些依赖项：
android.useAndroidX=true
android.enableJetifier=true
要迁移不使用具有需要转换的依赖关系的任何第三方库的现有项目，可以将android.useAndroidX标志设置为true，并将android.enableJetifier标志设置为false。

此外，在您的 TOP-LEVEL build.gradle中，将google()向上拉至顶部，如下所示：

allprojects {
    repositories {
        google() // here
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
        //google()
    }
}

Answer 3

我认为此错误是在升级到android studio后发生的

当您将编译更改为实现时，问题才刚刚开始。

假设A，B和C是三个模块，它们之间的关系如下

C > B > A _{>表示依赖项}

使用编译时，C可以直接访问A。但是使用实现时是不可能的。 api 具有与编译相同的作用。

注意：不建议在所有地方都使用api。 api和compile将使编译过程变慢，因为它将强制重新编译所有低级模块，而在实现中，只有在修改了顶层模块后，实现才会重新编译所需的模块。

Answer 4

如果您使用的是Android Studio 3+和Gradle版本4. +，则不需要maven。尝试删除

        maven {
            url 'https://maven.google.com/'
            name 'Google'
             }

就拥有

    buildscript {
    repositories {
        google()
        jcenter()

}
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

Answer 5

将google()移至所有其他所有内容，如下所示：

    buildscript {
    repositories {
google()
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }

}
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'

        // NOTE: Do not place your application dependencies here; they 
belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
 google()
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }

    }
}

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

我如何解决在Android中编译项目时无法找到依赖项的这些错误？

5 个答案: