相关疑难解决方法(0)

我正在使用Android数据库组件室

我已经配置了所有内容,但是当我编译时,Android Studio会给我这个警告:

模式导出目录未提供给注释处理器,因此我们无法导出模式.您可以提供 room.schemaLocation注释处理器参数或将exportSchema设置为false.

据我所知,它是DB文件所在的位置

它怎么会影响我的应用程序？这里的最佳做法是什么？我应该使用默认位置(false值)吗？

构建.gradle.kts

buildscript {
    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
    dependencies {
        classpath ("com.android.tools.build:gradle:7.0.2")
        classpath ("org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.30")
        classpath("gradle.plugin.com.github.spotbugs.snom:spotbugs-gradle-plugin:${Versions.spotbugsGradlePluginVersion}")
        classpath("se.bjurr.violations:violations-gradle-plugin:${Versions.violationsVersion}")

    }
}
//android {
//    compileOptions {
//        sourceCompatibility = JavaVersion.VERSION_11
//                targetCompatibility = JavaVersion.VERSION_11
//    }
//
//    kotlinOptions {
//        jvmTarget = JavaVersion.VERSION_11.toString()
//    }
//}
plugins {
    `maven-publish`
    `java-gradle-plugin`
    `kotlin-dsl`
    id ("io.gitlab.arturbosch.detekt") version ("1.18.1")
}
repositories {
    google()
    mavenCentral()
    gradlePluginPortal()
}

dependencies {
    compileOnly(gradleApi())
    testImplementation(gradleTestKit())
    testImplementation("junit:junit:${Versions.jUnitVersion}")
}
val generatedSources = tasks.register<GenerateVersionsFileTask>("generateSources")

我收到以下错误：

错误：“compileJava”任务（当前目标是 11）和“compileKotlin”任务（当前目标是 1.8）jvm 目标兼容性应设置为相同的 Java 版本。

当我取消注释时android …

任务“:app:kspDebugKotlin”执行失败。无法构建ksp

“compileDebugJavaWithJavac”任务（当前目标是 1.8）和“kspDebugKotlin”任务（当前目标是 17）jvm 目标兼容性应设置为相同的 Java 版本。

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
    jvmTarget = '1.8'
}

我正在尝试构建我的项目，但每次都会出现以下错误：

错误1

java.lang.NoSuchMethodError: 'kotlin.sequences.Sequence com.google.devtools.ksp.processing.Resolver.getPackagesWithAnnotation(java.lang.String)'
    at androidx.room.compiler.processing.ksp.KspRoundEnv.getElementsAnnotatedWith(KspRoundEnv.kt:107)
    at androidx.room.compiler.processing.CommonProcessorDelegate.processRound(XBasicAnnotationProcessor.kt:100)
    at androidx.room.compiler.processing.ksp.KspBasicAnnotationProcessor.process(KspBasicAnnotationProcessor.kt:62)
    at com.google.devtools.ksp.AbstractKotlinSymbolProcessingExtension$doAnalysis$6$1.invoke(KotlinSymbolProcessingExtension.kt:291)
    at com.google.devtools.ksp.AbstractKotlinSymbolProcessingExtension$doAnalysis$6$1.invoke(KotlinSymbolProcessingExtension.kt:289)
    at com.google.devtools.ksp.AbstractKotlinSymbolProcessingExtension.handleException(KotlinSymbolProcessingExtension.kt:394)
    at com.google.devtools.ksp.AbstractKotlinSymbolProcessingExtension.doAnalysis(KotlinSymbolProcessingExtension.kt:289)
    at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(TopDownAnalyzerFacadeForJVM.kt:123)
    at org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration$default(TopDownAnalyzerFacadeForJVM.kt:99)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:257)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.invoke(KotlinToJVMBytecodeCompiler.kt:42)
    at org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport.analyzeAndReport(AnalyzerWithCompilerReport.kt:115)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyze(KotlinToJVMBytecodeCompiler.kt:248)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli(KotlinToJVMBytecodeCompiler.kt:88)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli$default(KotlinToJVMBytecodeCompiler.kt:47)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:167)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:53)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:101)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:47)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:101)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1645)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:360)
    at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
    at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
    at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
    at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
    at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
    at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) …

我正在使用并尝试在一个裸项目react native中使用expo ，但是每当我尝试使用命令运行应用程序时，我都会收到此错误：npm run android

Execution failed for task ':expo-modules-core:compileDebugJavaWithJavac'.
> Could not resolve all files for configuration ':expo-modules-core:androidJdkImage'.
   > Failed to transform core-for-system-modules.jar to match attributes {artifactType=_internal_android_jdk_image, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}.
      > Execution failed for JdkImageTransform: /home/dukizwe/Android/Sdk/platforms/android-31/core-for-system-modules.jar.
         > jlink executable /usr/lib/jvm/java-14-openjdk-amd64/bin/jlink does not exist.

我使用的是linux操作系统，Android studio和JDK都已正确安装。

文件夹内部的/usr/lib/jvm/结构如下所示：

• java-1.11.0-openjdk-amd64
• java-1.14.0-openjdk-amd64
• java-11-openjdk-amd64
• java-14-openjdk-amd64
• jdk-18

我不知道为什么它在java-14-openjdk-amd64文件夹中查找，因为在该文件夹中没有jlink可执行文件。

在android studiosi中SDK Location指向java-11-openjdk. 有什么帮助吗？

我正在使用 Room 库，并且在尝试构建应用程序时收到以下错误消息：

e: [kapt] An exception occurred: java.util.NoSuchElementException: Collection contains no element matching the predicate.

这是更详细的错误消息：

FAILURE: Build failed with an exception
* What went wrong:
Execution failed for task ':app:kaptDebugKotlin'.
> Compilation error. See log for more details

我将代码中的问题隔离在以下某处，尽管我不知道究竟是什么引发了此异常：

package com.example.pomoplay

import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase

@Database(entities = [(Category::class)], version = 1)
abstract class PomoPlayDatabase: RoomDatabase() {

    abstract fun categoryDao(): CategoryDao

    companion object {
        private var INSTANCE: PomoPlayDatabase? = null
        internal fun getDatabase(context: Context): PomoPlayDatabase? …

这是我的代码

class BookmarkViewModel(app: Application) : AndroidViewModel(app) {

    private val dao = BookmarkDb.get(app).bookmarkDao()

    companion object {
        private const val PAGE_SIZE = PagingConstants.PERPAGE

        /**
         * If placeholders are enabled, PagedList will report the full size but some items might
         * be null in onBind method (PagedListAdapter triggers a rebind when data is loaded).
         * <p>
         * If placeholders are disabled, onBind will never receive null but as more pages are
         * loaded, the scrollbars will jitter as new pages are loaded. You …

我有 Room 或 idk 问题，实际上问题出在哪里，我需要帮助找出问题所在，我正在使用Hilt DI，在创建数据库实例时它崩溃了，这是我的代码

错误

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.todo, PID: 1895
    java.lang.RuntimeException: cannot find implementation for com.example.todo.data.ToDoDatabase. ToDoDatabase_Impl does not exist
        at androidx.room.Room.getGeneratedImplementation(Room.java:97)
        at androidx.room.RoomDatabase$Builder.build(RoomDatabase.java:1358)
        at com.example.todo.di.AppModule.provideToDoDatabase(AppModule.kt:27)
        at com.example.todo.di.AppModule_ProvideToDoDatabaseFactory.provideToDoDatabase(AppModule_ProvideToDoDatabaseFactory.java:33)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC.toDoDatabase(DaggerMainApplication_HiltComponents_SingletonC.java:69)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC.access$2000(DaggerMainApplication_HiltComponents_SingletonC.java:48)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$SwitchingProvider.get(DaggerMainApplication_HiltComponents_SingletonC.java:583)
        at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC.toDoDao(DaggerMainApplication_HiltComponents_SingletonC.java:73)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC.access$1900(DaggerMainApplication_HiltComponents_SingletonC.java:48)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$SwitchingProvider.get(DaggerMainApplication_HiltComponents_SingletonC.java:580)
        at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$ViewModelCImpl.toDoRepository(DaggerMainApplication_HiltComponents_SingletonC.java:448)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$ViewModelCImpl.toDoViewModel(DaggerMainApplication_HiltComponents_SingletonC.java:452)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$ViewModelCImpl.access$1700(DaggerMainApplication_HiltComponents_SingletonC.java:429)
        at com.example.todo.DaggerMainApplication_HiltComponents_SingletonC$ViewModelCImpl$SwitchingProvider.get(DaggerMainApplication_HiltComponents_SingletonC.java:487)
        at dagger.hilt.android.internal.lifecycle.HiltViewModelFactory$1.create(HiltViewModelFactory.java:100)
        at androidx.lifecycle.AbstractSavedStateViewModelFactory.create(AbstractSavedStateViewModelFactory.java:69)
        at androidx.lifecycle.AbstractSavedStateViewModelFactory.create(AbstractSavedStateViewModelFactory.java:84)
        at dagger.hilt.android.internal.lifecycle.HiltViewModelFactory.create(HiltViewModelFactory.java:109)
        at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.kt:171)
        at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.kt:139)
        at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.kt:44)
        at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.kt:31)
        at com.example.todo.fragments.add.AddFragment.getViewModel(AddFragment.kt:20)
        at com.example.todo.fragments.add.AddFragment.insertDataToDo(AddFragment.kt:63)
        at …