我是Kotlin和Android Studio的新手,我当前的问题是...
我正在尝试使Codelabs的“ android-room-with-a-view-kotlin”正常工作,并且在解决各种构建错误的同时,我认为我的build.gradle变得非常混乱!
我通过添加依赖项
kapt 'androidx.room:room-ktx:2.2.1'
下一个版本进一步扩展到 WordDao.kt ,但由于相同类型的错误而失败。
WordDao.java:21: error: To use Coroutine features, you must add `ktx` artifact from Room as a dependency. androidx.room:room-ktx:<version>
我无法继续,因为我不知道要在build.gradle中进行哪些更改,因为我已经添加了该依赖项?
正如我所说的,我的文件现在非常混乱,我希望提供 任何 帮助,使文件更加明智。谢谢,DaveInUk
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: "kotlin-kapt"
android {
compileSdkVersion 28
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.example.prepopplus"
//was minSdkVersion 15 Note Old phone is API16
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
packagingOptions {
exclude "META-INF/atomicfu.kotlin_module"
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.50"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
kapt 'androidx.room:room-ktx:2.2.1'
kapt "androidx.room:room-compiler:2.2.1"
implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0-rc01'
implementation 'androidx.recyclerview:recyclerview:1.0.0'
implementation 'com.google.android.material:material:1.0.0'
implementation 'com.android.support:appcompat-v7:28.0.0'
kapt "android.arch.persistence.room:compiler:1.1.1"
kapt "android.arch.lifecycle:compiler:1.1.1"
implementation 'androidx.room:room-runtime:2.2.1'
}
答案 0 :(得分:1)
您正在使用
kapt 'androidx.room:room-ktx:2.2.1'
kapt "androidx.room:room-compiler:2.2.1"
但是androidx.room:room-ktx
不是kapt
的输入,而是普通的implementation
依赖项(room-compiler
是注释处理器)。因此,您的依赖项必须是
implementation 'androidx.room:room-ktx:2.2.1'
kapt "androidx.room:room-compiler:2.2.1"
按照Declaring Room dependencies documentation。请注意,room-ktx
将room-runtime
作为传递依赖项引入,因此您可以删除该依赖项,并根据需要仅依赖于room-ktx
。
答案 1 :(得分:0)
这些是你应该添加的。
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"
// Kotlin Extensions and Coroutines support for Room
implementation "androidx.room:room-ktx:$room_version"