android - 无法解析 : com. android.support :appcompat-v7. 15

Question

我刚刚在 elementary os 0.3.1(基于 Ubuntu 14.04 LTS)上安装了 Android Studio，但出现以下错误:

Error:(24, 13) Failed to resolve: com.android.support:appcompat-v7:15.+ 
Install Repository and sync project
Show in File
Show in Project Structure dialog

当我点击“Install Repository and sync project”时，出现这个错误:

Loading SDK information...
Ignoring unknown package filter 'extra-android-m2repository' 
Warning:The package filter removed all packages. There is nothing to install.
     Please consider trying to update again without a package filter.

我的build.gradle(模块:app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 15
    buildToolsVersion "19.1.0"

    defaultConfig {
        applicationId "com.example.android.happybirthday"
        minSdkVersion 15
        targetSdkVersion 15
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:15.+'
}

我的build.gradle(项目:HappyBirthday)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'

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

allprojects {
    repositories {
        jcenter()
    }
}

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

Answer 1

从 Android Studio 转到:工具 >> Android >> SDK 管理器选择并安装“Extras|Android Support Repository”

如果没有帮助，请发布您的 gradle 文件。