更新 gradle 插件后，Android Studio 无法构建我的应用程序

Question

我昨天更新了 Gradle 插件，现在 android studio 无法构建我的应用程序。该应用程序显示以下错误。

    ERROR: Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve io.grpc:grpc-core:[1.16.1].
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Affected Modules: app


ERROR: Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve io.grpc:grpc-core:[1.16.1].
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Affected Modules: app


ERROR: Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve io.grpc:grpc-core:[1.16.1].
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Affected Modules: app


ERROR: Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve io.grpc:grpc-core:[1.16.1].
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Affected Modules: app


ERROR: Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve io.grpc:grpc-core:[1.16.1].
Show Details
Affected Modules: app


WARNING: API 'variant.getExternalNativeBuildTasks()' is obsolete and has been replaced with 'variant.getExternalNativeBuildProviders()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getExternalNativeBuildTasks(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.
Affected Modules: app

我的应用级 build.gradle 文件如下所示：

    apply plugin: 'com.android.application'
apply plugin: 'io.fabric'
android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.mvp1stockmeter"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    dataBinding
            {
                enabled true
            }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    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:1.0.3'
    implementation 'org.jsoup:jsoup:1.11.3'

    implementation 'com.google.firebase:firebase-core:16.0.7'
    implementation 'com.google.firebase:firebase-firestore:18.0.0'

    implementation 'com.google.firebase:firebase-core:16.0.7'
    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.9'
    implementation 'com.firebaseui:firebase-ui-auth:4.3.1'
    implementation 'com.google.firebase:firebase-auth:16.1.0'
    //implementation 'com.facebook.android:facebook-android-sdk:4.x'

    implementation 'com.jjoe64:graphview:4.2.2'
}
apply plugin: 'com.google.gms.google-services'

我的项目级 build.gradle 文件如下所示：

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

buildscript {
    repositories {
        google()
        jcenter()
        maven {
            url 'https://maven.fabric.io/public'
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.2'
        classpath 'com.google.gms:google-services:4.2.0'
        classpath 'io.fabric.tools:gradle:1.26.1'
        // 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/'
        }
    }
}

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

我也在 StackOverflow 和谷歌上搜索过这个。但是没有找到任何信息。请帮忙。我被困在这里了。

Answer 1

我不知道为什么会发生这种情况，但它从昨天 2019 年 3 月 21 日开始发生。我认为这是 maven 存储库中的问题？因为 android studio 试图获取该库的 url 已关闭。

无论如何，解决方法是“手动”将 AS 指向缺少的依赖项，将此行添加到 build.gradle 中的依赖项{...}

implementation group: 'io.grpc', name: 'grpc-core', version: '1.16.1'

然后同步，然后你就可以删除那条线了。

好吧，我希望有人能解释发生了什么。

Answer 2

将 mavenCentral() 添加到项目级 build.gradle 文件的 buildScript{} 部分已为我解决了这个问题。感谢您的支持。

Answer 3

将 mavenCentral() 添加到项目级 build.gradle 文件的 allprojects{} 部分已为我解决了这个问题。

Answer 4

我遇到以下类型的三个构建错误：

Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve io.grpc:grpc-core:[1.28.0].

与许多与 android studio 相关的问题一样，

File -> Invalidate Caches / Restart...

为我做了诀窍。

Answer 5

删除这一行：- testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"...它对我有用

Answer 6

将 mavenCentral() 添加到您的 buildscripts->repositories 和 allprojects->repositories 两个地方并同步项目。