如果您的编译SDK版本为26，则android支持依赖项版本应为26.x.x

If your compile SDK version is 26, android support dependencies version should be 26.x.x

设置gradle依赖项如下:

Set your gradle dependencies as follow:

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
       exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.0.1'
    compile 'com.android.support:support-v13:26.0.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:design:26.0.1'
}

如果仍然出现编译错误，请将google maven存储库添加到Project Gradle文件:

If you still get compile errors, add google maven repository to Project Gradle file:

allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com'
        }
    }
}