尝试使用 android 创建房间数据库，但不断出现依赖性错误

Question

Android.com 表示将这些依赖项添加到您的 gradle 文件中。我一直在以 kapt 和 ksp 开头的行上收到错误消息，说找不到这些方法。有任何想法吗？对不起我不聪明

//下面是android说要放进去的

def room_version = "2.3.0"

implementation("androidx.room:room-runtime:$room_version")
annotationProcessor "androidx.room:room-compiler:$room_version"

// To use Kotlin annotation processing tool (kapt)
kapt("androidx.room:room-compiler:$room_version")
// To use Kotlin Symbolic Processing (KSP)
ksp("androidx.room:room-compiler:$room_version")

// optional - Kotlin Extensions and Coroutines support for Room
implementation("androidx.room:room-ktx:$room_version")

// optional - RxJava2 support for Room
implementation "androidx.room:room-rxjava2:$room_version"

// optional - RxJava3 support for Room
implementation "androidx.room:room-rxjava3:$room_version"

// optional - Guava support for Room, including Optional and 
ListenableFuture
implementation "androidx.room:room-guava:$room_version"

// optional - Test helpers
testImplementation("androidx.room:room-testing:$room_version")

// optional - Paging 3 Integration
implementation("androidx.room:room-paging:2.4.0-alpha04")

构建文件 'C:\Users\tanne\AndroidStudioProjects\LazyAlarm\app\build.gradle' 行：51

评估项目“:app”时出现问题。

Could not find method kapt() for arguments [androidx.room:room-compiler:2.3.0] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

/////////////////////////////////////// //gradle下面的文件

plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-android-extensions'
}

android {
compileSdk 31

defaultConfig {
    applicationId "com.example.lazyalarm"
    minSdk 22
    targetSdk 31
    versionCode 1
    versionName "1.0"


    testInstrumentationRunner "androidx.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
}
kotlinOptions {
    jvmTarget = '1.8'
}
}

 dependencies {

implementation 'androidx.core:core-ktx:1.6.0'
implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.room:room-ktx:2.3.0'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
def room_version = "2.3.0"

implementation("androidx.room:room-runtime:$room_version")
annotationProcessor "androidx.room:room-compiler:$room_version"

// To use Kotlin annotation processing tool (kapt)
kapt("androidx.room:room-compiler:$room_version")
// To use Kotlin Symbolic Processing (KSP)
ksp("androidx.room:room-compiler:$room_version")

// optional - Kotlin Extensions and Coroutines support for Room
implementation("androidx.room:room-ktx:$room_version")

// optional - RxJava2 support for Room
implementation "androidx.room:room-rxjava2:$room_version"

// optional - RxJava3 support for Room
implementation "androidx.room:room-rxjava3:$room_version"

// optional - Guava support for Room, including Optional and ListenableFuture
implementation "androidx.room:room-guava:$room_version"

// optional - Test helpers
testImplementation("androidx.room:room-testing:$room_version")

// optional - Paging 3 Integration
implementation("androidx.room:room-paging:2.4.0-alpha04")

}

Answer 1

试试这个依赖关系

def room_version = "1.1.1"
implementation "android.arch.persistence.room:runtime:$room_version"
annotationProcessor "android.arch.persistence.room:compiler:$room_version"
testImplementation "android.arch.persistence.room:testing:$room_version"

Answer 2

您似乎已经从 Google 的文档中逐字复制了一堆行到您的 build.gradle 文件中。不幸的是，他们的文档有问题。特别是，其中许多行代表选择，您需要选择您需要的那些。特别是，恰好选择以下两行之一：

kapt("androidx.room:room-compiler:$room_version")
ksp("androidx.room:room-compiler:$room_version")

...然后选择这四行之一：

implementation("androidx.room:room-ktx:$room_version")
implementation "androidx.room:room-rxjava2:$room_version"
implementation "androidx.room:room-rxjava3:$room_version"
implementation "androidx.room:room-guava:$room_version"

然后，根据您在第一对中的选择，您可能需要将另一个插件添加到文件顶部的 plugins 块中。如果选择kapt行，则需要添加id 'kotlin-kapt'。我没有使用 ksp 选项，不知道你需要什么插件，如果有的话。

Answer 3

使用 ksp

以下适合我。

settings.gradle

 pluginManagement {
 repositories {
     gradlePluginPortal()
     google()
 }
 plugins {
     id("com.google.devtools.ksp") version "1.6.20-1.0.5"
 }

ksp 版本参考：Maven Repository: com.google.devtools.ksp

app/build.gradle

plugins {
  id 'com.google.devtools.ksp'    }

implementation("androidx.room:room-runtime:$rootProject.roomVersion")
annotationProcessor("androidx.room:room-compiler:$rootProject.roomVersion")
ksp("androidx.room:room-compiler:$rootProject.roomVersion")

build.gradle

 buildscript {  

 ext {
  // app dependencies
  kotlinVersion = '1.6.20'
  roomVersion = '2.4.2' }
 }

尝试使用 android 创建房间数据库，但不断出现依赖性错误

Trying to create room database with android, but keep getting dependency error

android

kotlin

android-room

使用 ksp