如何解决此错误：无法解决：com.android.support:appcompat-v7:26.1.0

我刚刚安装了 Android Studio 3.0.1 并且我从上次被问到这个问题时尝试了许多解决方案，但似乎没有一个有效。我仍然收到此错误：无法解决：com.android.support:appcompat-v7:26.1.0

我的顶级构建文件如下：

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

    allprojects{
        repositories{
            jcenter()
        }
    }
    repositories {
        // Gradle 4.1 and higher include support for Google's Maven repo using
        // the google() method. And you need to include this repo to download
        // Android plugin 3.0.0 or higher.
        maven { url "https://maven.google.com" }
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
    }
}

我的应用 build.gradle 文件包括：

apply plugin: 'com.android.application'

repositories {
    maven { url "https://maven.google.com" }
    jcenter { url "http://jcenter.bintray.com/" }
}

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"

    defaultConfig {
        applicationId "com.example.application"
        minSdkVersion 15
        targetSdkVersion 26
        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-v7:26.0.1'
    compile 'com.android.support:design:23.1.1'
}