Question

建立火箭聊天机器人代码时，出现此错误。

无法获取类型为org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler的对象的未知属性“库”。

core / build.gradle

  apply plugin: 'com.android.library'
  apply plugin: 'kotlin-android'
  apply plugin: 'kotlin-kapt'


  android {
  compileSdkVersion 28

defaultConfig {
    minSdkVersion 15
    targetSdkVersion 28
    versionCode 1
    versionName "1.0.0"
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

packagingOptions {
    exclude 'META-INF/core.kotlin_module'
    exclude 'META-INF/main.kotlin_module'
 }
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation libraries.kotlin
implementation libraries.coroutines
implementation libraries.lifecycleExtensions
kapt libraries.lifecycleCompiler
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.71"}

  repositories {
             mavenCentral()
            }

Answer 1

尝试添加以下行：

kapt "androidx.lifecycle:lifecycle-compiler:2.0.0"

Answer 2

core/build.gradle不会检测到您正在使用的扩展名。有几种解决方法。

您可以从定义它们的dependencies.gradle解析依赖项。在查看Rocket.Chat.Android示例时，扩展看起来像这样：

 ext {
    versions = [
            kotlin                : '1.2.61',
            coroutine             : '0.25.0',
            ...

            lifecycle             : '2.0.0', 
            ...
]
    libraries = [
            kotlin                : "org.jetbrains.kotlin:kotlin-stdlib-jdk8:${versions.kotlin}",
            coroutines            : "org.jetbrains.kotlinx:kotlinx-coroutines-core:${versions.coroutine}",
            ...
            lifecycleExtensions   : "androidx.lifecycle:lifecycle-extensions:${versions.lifecycle}",
            lifecycleCompiler     : "androidx.lifecycle:lifecycle-compiler:${versions.lifecycle}",
            ...
    ]
}

和您的core/build.gradle的依存关系块如下所示：

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.61"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:0.25.0"
    implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
    kapt "androidx.lifecycle:lifecycle-compiler:2.0.0"
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.71"
}

或者，您可以将dependencies.gradle文件应用于core/build.gradle，我认为它应该检测在那里定义的额外属性。

我正在谈论将apply from: "../dependencies.gradle"添加到您的core/build.gradle中。

实现Kotlin库时出错

2 个答案: