android - Android Studio 3.0 Canary 3 的数据绑定(bind)

Question

我正在尝试在现有项目中使用 DataBinding。根据文档，我在应用程序模块的 build.gradle 中添加了以下行并编译了项目。

 dataBinding {
    enabled = true
}

我收到以下错误:

Could not resolve all dependencies for configuration ':app:devDebugCompileClasspath'.

Could not find com.android.databinding:baseLibrary:3.0.0-alpha3. Searched in the following locations: file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar Required by: project :app Could not find com.android.databinding:baseLibrary:3.0.0-alpha3. Searched in the following locations: file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom file:/C:/Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar Required by: project :app > com.android.databinding:library:1.3.1 project :app > com.android.databinding:adapters:1.3.1

谁能帮我解决这个问题？我正在使用 Android Studio 3.0 Canary 3。

我的项目级别gradle

buildscript {
repositories {
    jcenter()
    maven {
        url 'https://maven.google.com'
    }
}
dependencies {
    classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.2-4'
    classpath 'com.google.firebase:firebase-plugins:1.1.0'
    classpath 'com.android.tools.build:gradle:3.0.0-alpha3'
    classpath 'com.google.gms:google-services:3.0.0'
    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

allprojects {
repositories {
    jcenter()
    maven { url 'https://jitpack.io' }
}
}

应用级渐变

buildscript {
dependencies {
    //noinspection GradleDynamicVersion
    classpath 'io.fabric.tools:gradle:1.+'
}

repositories {
    mavenCentral()
    maven { url 'https://maven.fabric.io/public' }
}
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'com.google.firebase.firebase-perf'
apply plugin: 'io.fabric'
apply from: "../constants.gradle"

repositories {
    maven { url 'https://maven.fabric.io/public' }
}
android {
compileSdkVersion project.ext.compileSdk
buildToolsVersion "${project.ext.buildtools}"
signingConfigs {
    config {
        keyAlias keystoreProperties['keyAlias']
        keyPassword keystoreProperties['keyPassword']
        storeFile file(keystoreProperties['storeFile'])
        storePassword keystoreProperties['storePassword']
    }
}

// Data Binding Library
dataBinding {
    enabled = true
}
defaultConfig {
        applicationId "com.chanse.cee2048"
        minSdkVersion project.ext.minSdk
        targetSdkVersion project.ext.targetSdk
        versionCode versionCodeNo
        versionName versionNameMajor + "." + versionNameMinor + "." + versionNamePatch + "." + versionNameBuild
        vectorDrawables.useSupportLibrary = true
        versionNameSuffix ' (Beta)'
        signingConfig signingConfigs.config
    }
buildTypes {
    release {
//            debuggable true
//            shrinkResources true
        signingConfig signingConfigs.config
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
    debug {
        signingConfig signingConfigs.config
    }
}
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
flavorDimensions "chanse"
productFlavors {
    dev {
        applicationIdSuffix '.debug'
        minSdkVersion project.ext.minSdkDebug

        // Build only for english and xxhdpi density
        resConfigs ("en", "xxhdpi")


        // Have a different application name for dev version
        resValue "string", "app_name", "Chanse Games Dev"
    }
    prod {
        // The actual minSdkVersion for the application.
        minSdkVersion project.ext.minSdk


        // Have a different application name for dev version
        resValue "string", "app_name", "Chanse Games"
    }
}
return void
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile "com.android.support:appcompat-v7:${project.ext.support_library_version}"
compile "com.android.support:cardview-v7:${project.ext.support_library_version}"
compile "com.android.support:recyclerview-v7:${project.ext.support_library_version}"
compile "com.android.support:design:${project.ext.support_library_version}"
compile 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.databinding:library:1.3.1'
implementation 'com.android.databinding:adapters:1.3.1'
compile 'org.jetbrains.kotlin:kotlin-stdlib:1.1.2-4'
apply plugin: 'com.google.gms.google-services'
}

Answer 1

将这些行作为依赖项添加到模块级 build.gradle 中； Android Studio 3.0 更改了它提取您之前通过 SDK 管理器下载的库的方式 - https://developer.android.com/studio/build/dependencies.html#google-maven

implementation 'com.android.databinding:library:1.3.1'
implementation 'com.android.databinding:adapters:1.3.1'

您可能不需要第二行，具体取决于您使用数据绑定(bind)的方式。

除了implementation，您还可以使用旧的compile。使用 implementation 将避免构建警告；它是 Android Gradle 插件现在默认使用的新 Gradle Java 库插件的一部分。

如果您还没有添加类似以下内容(通常在您的模块级 build.gradle 中)，您还需要添加它 - 这会添加 Google 的新 Maven 存储库，用于 Android 依赖项:

repositories {
    maven {
        url 'https://maven.google.com'
    }
}