包com.facebook.android不存在

Question

我是Android开发的新手，我已经获得了恢复旧项目并修复一些错误的工作。当我在Android Studio中打开项目时，我发现与facebook包相关的错误不存在。项目结构如下：

build.gradle包含以下代码：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
    }
}
apply plugin: 'com.android.application'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')

}

我收到的错误如下所示：

我该怎么做才能解决问题？

更新：完成Build.gradle文件：

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.0.0'
    }
}
apply plugin: 'com.android.application'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')

}

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        // Move the tests to tests/java, tests/res, etc...
        instrumentTest.setRoot('tests')

        // Move the build types to build-types/<type>
        // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
        // This moves them out of them default location under src/<type>/... which would
        // conflict with src/ being used by the main source set.
        // Adding new build types or product flavors should be accompanied
        // by a similar customization.
        debug.setRoot('build-types/debug')
        release.setRoot('build-types/release')
    }
}

Answer 1

您需要将您的库添加到Android Studio。

打开libs文件夹并右键单击facebook库，然后选择＆＃34; Add as library＆＃34;。然后也许重建项目。

Answer 2

将Maven Central Repository添加到项目的build.gradle：

    repositories {
        jcenter()
        mavenCentral()
    }

现在在应用程序的build.gradle中将Facebook SDK添加到您的应用程序：

dependencies {
        compile fileTree(dir: 'libs', include: '*.jar')
        compile 'com.facebook.android:facebook-android-sdk:3.23.1'
    }

文档here。

修改：选项2（本地）

下载Facebook SDK表单here。

在项目根目录中创建一个“libs”文件夹。

将Facebook SDK的内容复制到“libs”文件夹。

打开settings.gradle并将库添加到您的应用中：

include ':app'
include ':libs:facebook-android-sdk-3.23.1'

现在将它添加到build.gradle文件中：

dependencies {
            compile fileTree(dir: 'libs', include: '*.jar')
            compile project(':libs:facebook-android-sdk-3.23.1')
        }