Kotlin 在 Android 数据绑定方面的问题

Question

我正在尝试使用 Kotlin 在 Android 上进行数据绑定，但遇到了一些问题。下面列出了我的 gradle 文件。

顶级：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0-beta3'
        classpath 'com.google.gms:google-services:2.1.0-beta3'
        // 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
}

应用级别：

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    defaultConfig {
        applicationId "..."
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        resValue 'string', 'package_name', applicationId
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dataBinding {
        enabled = true
    }
    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile(name: 'app-release', ext: 'aar')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.3.0'
    compile 'com.android.support:design:23.3.0'
    compile 'com.android.support:recyclerview-v7:23.3.0'
    compile 'com.android.support:support-v4:23.3.0'
    compile 'com.google.android.gms:play-services-plus:8.4.0'
    compile 'com.google.android.gms:play-services-auth:8.4.0'
    compile 'com.google.android.gms:play-services-gcm:8.4.0'
    compile 'com.google.android.gms:play-services-nearby:8.4.0'
    compile 'io.reactivex:rxkotlin:0.55.0'
    compile 'io.reactivex:rxandroid:1.1.0'
    compile 'com.trello:rxlifecycle-kotlin:0.5.0'
    compile 'com.github.bumptech.glide:glide:3.7.0'
    compile 'io.pristine:libjingle:11139@aar'
    compile 'com.google.code.gson:gson:2.6.2'
    compile 'com.squareup.retrofit2:retrofit:2.0.0'
    compile 'com.squareup.retrofit2:converter-gson:2.0.0'
    compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0'
    compile 'com.pushtorefresh.storio:sqlite:1.8.0'
    compile 'com.pushtorefresh.storio:content-resolver:1.8.0'
    kapt 'com.google.dagger:dagger-compiler:2.0.2'
    compile 'com.google.dagger:dagger:2.0.2'
    provided 'org.glassfish:javax.annotation:10.0-b28'
}
buildscript {
    ext.kotlin_version = '1.0.1-2'
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}
repositories {
    mavenCentral()
    flatDir {
        dirs 'libs'
    }
}
kapt {
    generateStubs = true
}
apply plugin: 'com.google.gms.google-services'

我使用以下代码来夸大我的视图。

val binding = FragmentTransferListBinding.inflate(inflater, container, false)

但是当我尝试构建项目时，出现此错误。

Error:(7, 31) Unresolved reference: databinding
Error:(28, 9) Unresolved reference: FragmentTransferListBinding
Error:Execution failed for task ':app:compileDebugKotlinAfterJava'.
> Compilation error. See log for more details

我尝试按照其他一些答案中的建议将数据绑定编译器添加到 kapt

kapt 'com.android.databinding:compiler:2.1.0-beta3'

但是后来我收到以下错误。

Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> java.lang.NoSuchMethodError: com.google.common.collect.FluentIterable.append(Ljava/lang/Iterable;)Lcom/google/common/collect/FluentIterable;

Answer 1

你需要

kapt 'com.google.guava:guava:19.0'
kapt 'com.android.databinding:compiler:2.1.0'

在dagger的依赖关系描述之前

Answer 2

在我的情况下添加version = "2.0.0

dataBinding { enabled = true version = "2.0.0" }

就像ubarua123和AlokBansal8发布的这篇文章中提到的，解决了NoSuchMethodError的问题

Answer 3

嘗試

刪除 .idea、.build 資料夾，並失效並重新啟動 Android Studio