问找不到com.android.databinding:编译器3.4.0
EN

Stack Overflow用户

提问于 2019-05-03 19:29:25

回答 4查看 5.3K关注 0票数 1

大家好，我们如何在android_plugin_version = '3.4.0‘中启用数据库？作为我的android，我安装了最新版本，当将android_plugin_version = '3.4.0‘降级到3.2.xx时，我收到了另一个错误。

项目分级

buildscript {
ext {
    kotlin_version = '1.3.31'
    android_plugin_version = '3.4.0'
}
repositories {
    google()
    jcenter()
    maven { url 'https://maven.google.com' }
}
dependencies {
    classpath "com.android.tools.build:gradle:$android_plugin_version"
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
  }
}

allprojects {
repositories {
    google()
    jcenter()
    mavenCentral()
 }
}

模块

 apply plugin: 'com.android.application'

 apply plugin: 'kotlin-android'

 apply plugin: 'kotlin-android-extensions'

 apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 28
    defaultConfig {
    applicationId "xxx.xxx.com"
    minSdkVersion 21
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}
dataBinding {
    enabled = true
}

kapt {
    generateStubs = 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.constraint:constraint-layout:1.1.3'
   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'

   kapt "com.android.databinding:compiler:$android_plugin_version"
}

同步没有问题，但是当运行它时，我收到了这个错误。

Could not find com.android.databinding:compiler:3.4.0.
Searched in the following locations:

https://dl.google.com/dl/android/maven2/com/android/databinding/compiler/3.4.0/compiler-3.4.0.pom - https://dl.google.com/dl/android/maven2/com/android/databinding/compiler/3.4.0/compiler-3.4.0.jar - https://jcenter.bintray.com/com/android/databinding/compiler/3.4.0/compiler-3.4.0.pom - https://jcenter.bintray.com/com/android/databinding/compiler/3.4.0/compiler-3.4.0.jar - https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.4.0/compiler-3.4.0.pom - https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.4.0/compiler-3.4.0.jar

android

android-studio

kotlin

回答 4

Stack Overflow用户

发布于 2019-05-03 20:37:19

您正在使用Databinding编译器的错误版本。对于最新版本，您可以查看像mvnrepository储存库这样的站点。目前的最新版本是3.4.0。在这里，您传递的是错误的版本：

 kapt "com.android.databinding:compiler:$android_plugin_version"

相反，请使用以下命令：

kapt "com.android.databinding:compiler:3.4.0"

更新

在AndroidStudio3.3及以上版本中，您不需要添加注释处理器kapt "com.android.databinding:compiler:$android_plugin_version"。只需在模块gradle文件中设置dataBinding.enabled = true或如下所示：

android {
    ...
    dataBinding {
        enabled = true
    }
}

票数 8

Stack Overflow用户

发布于 2019-05-03 23:38:53

我只需移除kapt "com.android.databinding:compiler$android_plugin_version“，它就能工作ActivityMainBinding出现在我的MainActivity中。

Gradle应用程序

    apply plugin: 'com.android.application'

     apply plugin: 'kotlin-android'

     apply plugin: 'kotlin-android-extensions'

     apply plugin: 'kotlin-kapt'

     android {
        compileSdkVersion 28
        defaultConfig {
        applicationId "xxx.xx.com"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    dataBinding {
        enabled = true
    }
}

kapt {
    correctErrorTypes = 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.constraint:constraint-layout:1.1.3'
    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'
}