android - Gradle 版本冲突

Question

在我尝试更新 sdk 版本(到 27)和 lib 版本之前，我的 build.gradle 一直很好。

在我的 build.gradle 中，我现在有:

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:design:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'com.google.android.gms:play-services-ads:15.0.1'

    implementation 'com.google.firebase:firebase-crash:16.0.1'
    implementation 'com.google.firebase:firebase-core:16.0.1'
    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'
}

我收到一条错误消息:

  Please fix the version conflict either by updating the version of the google-services plugin 
(information about the latest version is available at https://bintray.com/android/android-tools/com.google.gms.google-services/) or updating the version of com.google.android.gms to 15.0.1.

.. 但如您所见，它是 15.0.1。

另外，我在

下方有波浪状的红色下划线

implementation 'com.android.support:appcompat-v7:27.1.1'

当我将鼠标悬停在上方时，我得到:

all support libraries must use the exact same version ... found versions 27.1.1 and 26.1.0

但我没有看到任何 26.1.0。

我做错了什么？

Answer 1

您需要更新主 build.gradle 文件:

如果您使用的是 android studio 3.1.2，那么在您的 build.gradle 文件中应该如下所示:

  // 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:3.1.3'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.google.gms:google-services:4.0.1' // you need to update this most probably.
    }
}

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

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

在你的模块的 build.gradle 文件 implement 中，custom tabs 的最新版本在你的例子中是 27.1.1

'com.android.support:customtabs:27.1.1'