无法解决：com.android.support：设计：27在android工作室

Question

我在android studio中有一个这两个错误。如何修复此错误。

Error:(27, 13) Failed to resolve: com.android.support:design:27.+
    <a href="install.m2.repo">Install Repository and sync project</a><br><a href="openFile:D:/android project/My` `Projects/MyApplication2/app/build.gradle">Show in File</a><br><a href="open.dependency.in.project.structure">Show in Project Structure dialog</a>

和

Error:(26, 13) Failed to resolve: com.android.support:appcompat-v7:27.+
<a href="install.m2.repo">Install Repository and sync project</a><br><a href="openFile:D:/android project/My Projects/MyApplication2/app/build.gradle">Show in File</a><br><a href="open.dependency.in.project.structure">Show in Project Structure dialog</a>

这是我的依赖代码

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-v7:27.+'
    compile 'com.android.support:design:27.+'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
}

如何修复此错误

Answer 1

要使用从版本26.0.0开始的支持库，您需要将Google的Maven存储库添加到项目的build.gradle文件中。

1. 打开生成。应用程序的gradle文件
2. 确保repositories部分包含一个带有“https://maven.google.com“endpoint。例如：

例子：

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

对于Android Studio 3.0.0及以上：

allprojects {

    repositories {
        jcenter()
        google()
    }
}