Flutter: 'com.android.support:appcompat-v7' 具有不同版本的编译（26.1.0）和运行时（27.0.1）类路径

我在运行 flutter run 时收到错误消息

flutter run
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...                                0.7s
Resolving dependencies...                             0.9s
Running 'gradlew assembleDebug'...                        
Configuration 'debugCompile' in project ':app' is deprecated. Use 'debugImplementation' instead.
Configuration 'profileCompile' in project ':app' is deprecated. Use 'profileImplementation' instead.
Configuration 'releaseCompile' in project ':app' is deprecated. Use 'releaseImplementation' instead.
Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead.
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
Configuration 'debugProvided' in project ':apn_fb_login' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':apn_fb_login' is deprecated. Use 'releaseCompileOnly' instead.
Configuration 'debugProvided' in project ':firebase_messaging' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':firebase_messaging' is deprecated. Use 'releaseCompileOnly' instead.
Configuration 'debugProvided' in project ':google_sign_in' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':google_sign_in' is deprecated. Use 'releaseCompileOnly' instead.
Configuration 'debugProvided' in project ':image_picker' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':image_picker' is deprecated. Use 'releaseCompileOnly' instead.
Configuration 'debugProvided' in project ':share' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':share' is deprecated. Use 'releaseCompileOnly' instead.
Configuration 'debugProvided' in project ':shared_preferences' is deprecated. Use 'debugCompileOnly' instead.
Configuration 'releaseProvided' in project ':shared_preferences' is deprecated. Use 'releaseCompileOnly' instead.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:preDebugBuild'.
> Android dependency 'com.android.support:appcompat-v7' has different version for the compile (26.1.0) and runtime (27.0.1) classpath. You should manually set the same version via DependencyResolution

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 0s
Gradle build failed: 1

我的 gradle.build 文件是：

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withInputStream { stream ->
        localProperties.load(stream)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

apply plugin: 'com.android.application'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.3'

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.shuttertop.app"
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}

apply plugin: 'com.google.gms.google-services'

颤振医生：

[✓] Flutter (on Linux, locale en_US.UTF-8, channel alpha)
    • Flutter at /home/luca/Programs/flutter
    • Framework revision 8f65fec5f5 (4 weeks ago), 2017-12-12 09:50:14 -0800
    • Engine revision edaecdc8b8
    • Tools Dart version 1.25.0-dev.11.0
    • Engine Dart version 2.0.0-edge.d8ae797298c3a6cf8dc9f4558707bd2672224d3e

[✓] Android toolchain - develop for Android devices (Android SDK 26.0.3)
    • Android SDK at /home/luca/Android/Sdk
    • Android NDK at /home/luca/Android/Sdk/ndk-bundle
    • Platform android-26, build-tools 26.0.3
    • ANDROID_HOME = /home/luca/Android/Sdk
    • Java binary at: /home/luca/Programs/android-studio/jre/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 3.0)
    • Android Studio at /home/luca/Programs/android-studio
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Connected devices
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.0.0 (API 26) (emulator)