gradle 3.2.1 的数据绑定问题

Question

当我将 android studios 3.2.0 更新到 3.2.1 时。我使用了数据绑定，当运行项目向我显示这样的错误时，如果我错了请给我建议。

Could not find com.android.databinding:compiler:3.2.1.
Searched in the following locations:
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.pom
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.pom
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.pom
file:/C:/Users/Taufiq/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar
https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.1/compiler-3.2.1.pom
https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar
https://jcenter.bintray.com/com/android/databinding/compiler/3.2.1/compiler-3.2.1.pom
https://jcenter.bintray.com/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar     
https://dl.google.com/dl/android/maven2/com/android/databinding/compiler/3.2.1/compiler-3.2.1.jar

要求：项目：应用

project.gradle

buildscript {
    ext{
        kotlin_version = '1.2.71'
        gradle_version = '3.2.1'
    }
    repositories {
        jcenter()
        maven { url 'https://maven.google.com' }
        google()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:3.2.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

task clean(type: Delete) {
    delete rootProject.buildDir
}

app.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.taufik.kotlinbindingtest"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dataBinding {
        enabled = true
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    kapt "com.android.databinding:compiler:$gradle_version"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

}

如果我说错了请多多指教

Answer 1

我找了很多解决方案，最后我发现问题出在一个依赖项中，所以我从 app.gradle 中删除了这个 kapt "com.android.databinding:compiler:$gradle_version" 并成功地项目运行。

Answer 2

从 Android Studio 3.2 开始，不再需要此 kapt 插件。

但是，如果没有这个插件，在编译时出现任何错误时的错误信息是模糊的。所以，现在看来唯一的选择是将 Gradle 版本降级到 3.1.4.

感谢 http://mobiledevhub.com/2018/01/05/android-two-way-databinding/

上的文章

Answer 3

答案很简单：

只需 在 gradle 应用中添加 这些行

//Data binding
dataBinding.enabled = true

和删除这两行：

 apply plugin: 'kotlin-kapt'
 kapt "com.android.databinding:compiler:$gradle_version"

gradle 3.2.1 的数据绑定问题

Issue with data binding with gradle 3.2.1

android

android-databinding