Question

我在应用文件中添加了以下内容：implementation 'com.firebaseui:firebase-ui-auth:4.1.0'，但它向我显示了以下错误：

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.firebaseui:firebase-ui-auth:4.1.0.

Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.firebaseui:firebase-ui-auth:4.1.0.

Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.firebaseui:firebase-ui-auth:4.1.0.

Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.firebaseui:firebase-ui-auth:4.1.0.

Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.firebaseui:firebase-ui-auth:4.1.0.

我尝试清理项目并重新启动Android Studio，但仍然出现错误。关于如何解决它的任何想法。

Answer 1

转到根Build.gradle并将gradle更新为v 3.2.0：

dependencies {
        classpath 'com.android.tools.build:gradle:3.2.0'
        classpath 'com.google.gms:google-services:4.1.0' // keep this updated too

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

然后重建项目。发生这种情况的原因是，也许您使用的是较旧的gradle版本，但找不到该版本。因此，更新gradle将有所帮助。

Firebase UI无法解决依赖关系

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