无法解决：com.android.support.cardview-v7:28.0.0：

Question

我在尝试将卡片视图和回收站视图依赖项添加到我的应用时遇到上述错误。

以下是我在应用级别 build.gradle 中的依赖项：

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.android.support:support-core-utils:28.0.0'
implementation 'com.android.support:support-media-compat:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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.google.firebase:firebase-core:16.0.1'

implementation 'com.android.support:design:28.0.0'
implementation 'com.google.firebase:firebase-database:16.0.1'

implementation 'com.android.support.cardview-v7:28.0.0'
implementation 'com.android.support.recyclerview-v7:28.0.0'
implementation 'com.squareup.picasso:picasso:2.5.2'


implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
}

我相信我的项目级 buildgradle 中有存储库的相关输入，如下所示。所以我不确定为什么会出现这个错误。

    buildscript {

   repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.google.gms:google-services:4.0.1'



    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }

}

Answer 1

您使用的是点而不是冒号

实现'com.android.support.cardview-v7:28.0.0'

应该是

实现'com.android.support:cardview-v7:28.0.0'

还有你的回收站视图：

实现'com.android.support:recyclerview-v7:28.0.0'