“Android Studio 更新后的 Gradle 錯誤”

Question

今天我將 Android Studio 更新到了 3.0 版
之后我無法成功構建項目。
我收到了這些錯誤：

Unable to resolve dependency for ':app@release/compileClasspath': could not resolve com.android.support:appcompat-v7:27.0.1.

我嘗試使用 VPN 或代理等，但它們都不起作用。
這是漫長的一天。 我希望你能幫助我。

這是我的 build.gradle(app) ：

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
compileSdkVersion 27
defaultConfig {
    applicationId "ir.hetbo.kotlin_tutorial"
    minSdkVersion 15
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:27.0.1'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
}

這是 build.gradle(project):

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

buildscript {
ext.kotlin_version = '1.1.60'
repositories {
    google()
    jcenter()
    maven {
        url "https://maven.google.com"
    }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

    // 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"
    }
}
}

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

我做了很多事情來修復它，但每次都失敗了。

我使用 gradle 4.3.1

這是 gradle 包裝器屬性：

#Sat Nov 18 10:16:45 IRST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-all.zip

Answer 1

使用gradle 4.1的新功能和類路徑 'com.android.tools.build:gradle:3.0.0'

distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl= https://services.gradle.org/distributions/gradle-4.1-all.zip

這是 build.gradle(project):

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

buildscript {
ext.kotlin_version = '1.1.60'
repositories {
    google()
    jcenter()

}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

    // 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 2

從新版本開始，這些庫現在位於maven內部，而不是Jcenter內部。

所以在你的 gradle 文件中，你必須像下面這樣添加maven ：

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

此鏈接可能對您有所幫助： 添加支持庫

Answer 3

整個項目有一個 build.gradle 文件，每個模塊有一個。 需要在應用程序 build.gradle 文件中添加以下代碼。

 buildscript {
        repositories {
            jcenter()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:2.3.2'
        }
    }

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

Answer 4

在 build.gradle(Project) 中試試這個代碼：

buildscript {
    ext.kotlin_version = '1.1.51'
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // 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
}