在Room数据库库中将Enum作为主键时出错
我正在使用一个枚举成为与数据库的TypeConvertor的主键和它dos't运行时编译并抛出一个错误
这是我的转换器
class QuranIndexConverter { @TypeConverter fun toQuranIndex(index: String): QuranIndex { return QuranIndex.valueOf(index) } @TypeConverter fun toStringIndex(quranIndex: QuranIndex): String { return quranIndex.name }} 这里是道
@Dao interface SuraDao { @Query("SELECT * FROM " + Constants.TABLE_NAME) fun getAll(): LiveData<List<Sura>> @Insert fun insertAll(suras: List<Sura>) @Insert fun insert(sura: Sura) @Delete fun deleteAll(suras: List<Sura>) @Delete fun delete(sura: Sura)}
这是模块
@Entity(tableName = Constants.TABLE_NAME) data class Sura( @PrimaryKey val quranIndex: QuranIndex = QuranIndex.ABS, @ColumnInfo(name = "sura_name") val suraName: String = "Abasa", @ColumnInfo(name = "download_url") val downloadUrl: String = "www.google.com")
这是房间数据库
@Database( entities = arrayOf(Sura::class), version = 1) @TypeConverters(QuranIndexConverter::class) abstract class Appdatabase : RoomDatabase() { abstract fun suraDao(): SuraDao }
错误消息
e: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\entity\Sura.java:31: error: Room cannot pick a constructor since multiple constructors are suitable. Try to annotate e: e: public Sura(@org.jetbrains.annotations.NotNull() e: ^ e: unwanted constructors with @Ignore. e: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\entity\Sura.java:38: error: Room cannot pick a constructor since multiple constructors are suitable. Try to annotate e: e: public Sura() { e: ^ e: unwanted constructors with @Ignore. e: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\entity\Sura.java:8: error: Cannot find setter for field. e: e: private final com.abdelmeged.ahmed.nourplayerarch.utils.QuranIndex quranIndex = null; e: ^ e: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\entity\Sura.java:11: error: Cannot find setter for field. e: e: private final java.lang.String suraName = null; e: ^ e: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\entity\Sura.java:14: error: Cannot find setter for field. e: e: private final java.lang.String downloadUrl = null; e: ^ w: H:\Work\Android\Inmaa\Nour\NourPLayerArch\app\build\tmp\kapt3\stubs\debug\com\abdelmeged\ahmed\nourplayerarch\db\Appdatabase.java:6: warning: Schema export directory is not provided to the annotation processor so we cannot export the schema. You can either provide `room.schemaLocation` annotation processor argument OR set exportSchema to false. w: w: public abstract class Appdatabase extends android.arch.persistence.room.RoomDatabase { w: ^ e: java.lang.IllegalStateException: failed to analyze: org.jetbrains.kotlin.kapt3.diagnostic.KaptError: Error while annotation processing at org.jetbrains.kotlin.analyzer.AnalysisResult.throwIfError(AnalysisResult.kt:57) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:144) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:167) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:55) at org.jetbrains.kotlin.cli.common.CLICompiler.exec(CLICompiler.java:182) at org.jetbrains.kotlin.daemon.CompileServiceImpl.execCompiler(CompileServiceImpl.kt:397) at org.jetbrains.kotlin.daemon.CompileServiceImpl.access$execCompiler(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:365) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1$2.invoke(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2$$special$$inlined$withValidClientOrSessionProxy$lambda$1.invoke(CompileServiceImpl.kt:798) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2$$special$$inlined$withValidClientOrSessionProxy$lambda$1.invoke(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137) at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:825) at org.jetbrains.kotlin.daemon.CompileServiceImpl.access$checkedCompile(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2.invoke(CompileServiceImpl.kt:797) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$2.invoke(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl.ifAlive(CompileServiceImpl.kt:1004) at org.jetbrains.kotlin.daemon.CompileServiceImpl.ifAlive$default(CompileServiceImpl.kt:865) at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:791) at org.jetbrains.kotlin.daemon.CompileServiceImpl.access$doCompile(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1.invoke(CompileServiceImpl.kt:364) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$1.invoke(CompileServiceImpl.kt:99) at org.jetbrains.kotlin.daemon.CompileServiceImpl.ifAlive(CompileServiceImpl.kt:1004) at org.jetbrains.kotlin.daemon.CompileServiceImpl.ifAlive$default(CompileServiceImpl.kt:865) at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:336) at sun.reflect.GeneratedMethodAccessor80.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:346) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.jetbrains.kotlin.kapt3.diagnostic.KaptError: Error while annotation processing at org.jetbrains.kotlin.kapt3.AnnotationProcessingKt.doAnnotationProcessing(annotationProcessing.kt:90) at org.jetbrains.kotlin.kapt3.AnnotationProcessingKt.doAnnotationProcessing$default(annotationProcessing.kt:42) at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.runAnnotationProcessing(Kapt3Extension.kt:205) at org.jetbrains.kotlin.kapt3.AbstractKapt3Extension.analysisCompleted(Kapt3Extension.kt:166) at org.jetbrains.kotlin.kapt3.ClasspathBasedKapt3Extension.analysisCompleted(Kapt3Extension.kt:82) at org.jetbrains.kotlin.resolve.jvm.TopDownAnalyzerFacadeForJVM$analyzeFilesWithJavaIntegration$2.invoke(TopDownAnalyzerFacadeForJVM.kt:89) at org.jetbrains.kotlin.resolve.jvm.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(TopDownAnalyzerFacadeForJVM.kt:99) at org.jetbrains.kotlin.resolve.jvm.TopDownAnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration$default(TopDownAnalyzerFacadeForJVM.kt:76) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$analyze$1.analyze(KotlinToJVMBytecodeCompiler.kt:365) at org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport.analyzeAndReport(AnalyzerWithCompilerReport.kt:105) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyze(KotlinToJVMBytecodeCompiler.kt:354) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules(KotlinToJVMBytecodeCompiler.kt:139) ... 39 more
我有这个错误，因为kotlin显然会生成具有默认参数值的单个kotlin构造函数的多个java构造函数。 工作代码我编辑数据类是这样的：
@Entity(tableName = Constants.TABLE_NAME) data class Sura( @PrimaryKey val quranIndex: QuranIndex, @ColumnInfo(name = "sura_name") val suraName: String , @ColumnInfo(name = "download_url") val downloadUrl: String )