在对Android Studio进行最新更新之后，缺少DataBinding依赖项。我收到此错误消息：
ERROR: Failed to resolve: androidx.databinding:databinding-runtime:3.3.2
Show in Project Structure dialog
Affected Modules: app
ERROR: Failed to resolve: androidx.databinding:databinding-adapters:3.3.2
Show in Project Structure dialog
Affected Modules: app
这是我的应用程序的build.gradle：
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.soulfetch2"
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'
}
}
dataBinding {
enabled = true
}
compileOptions {
sourceCompatibility 1.8
targetCompatibility 1.8
}
}
dependencies {
def acraVersion = '5.1.3'
implementation "ch.acra:acra-mail:$acraVersion"
implementation "ch.acra:acra-dialog:$acraVersion"
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
implementation 'androidx.core:core-ktx:1.1.0-alpha04'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.2-alpha01'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.2-alpha01'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.1'
implementation 'androidx.preference:preference:1.0.0'
implementation 'androidx.recyclerview:recyclerview:1.0.0'
implementation "androidx.lifecycle:lifecycle-runtime:2.0.0"
dependencies {
def nav_version = "1.0.0-rc02"
implementation "android.arch.navigation:navigation-fragment-ktx:$nav_version"
implementation "android.arch.navigation:navigation-ui-ktx:$nav_version"
}
}
我尝试添加这些依赖项，但没有效果。
implementation 'androidx.databinding:databinding-adapters:3.3.2'
implementation 'androidx.databinding:databinding-runtime:3.3.2'
这里的另一个问题是通过将它们添加到gradle.properties中来解决的，但是在我的情况下，这又导致了另一个错误：
android.enableExperimentalFeatureDatabinding = true
android.databinding.enableV2=true
知道要做什么吗？
答案 0 :(得分：3)
AS 3.3.2 摇篮4.10.1 插件3.3.2
我遇到了同样的问题，并通过执行以下操作解决了该问题：
转到Project Non-Source Files并打开.idea库文件夹 从该文件夹中删除所有数据绑定依赖项。
重建您的应用程序，应该可以！
答案 1 :(得分：2)
当我在Android Studio的3.3.2版中执行Gradle更新时，此问题发生在我身上。但是在我看来，Android Studio尚未为该更新做好充分准备。因此，我将gradle的版本恢复为3.3.1，一切恢复正常。
glideVersion ='4.8.0'
gradleVersion ='3.3.1'
答案 2 :(得分：0)
当您的代码中出现小错误时，问题就开始出现（由于升级到android x，R id可能没有多少变化） 因此，预处理器无法解释代码。并生成类 然后从3.2.0开始的类名称猜测功能开始无法正常工作。
并导致错误：无法猜测com.PackageName.ClassName。（如果您需要下面的stacktrace）
问题不是com.PackageName.ClassName 它猜测com.PackageName 我相信它会搜索第一个大写首字母并使其成为班级
所以解决方案是使程序包名称以小写字母开头
我在此线程中找到了答案： https://stackoverflow.com/a/57868381/466363 只需将软件包名称更改为小写即可。
要高效重构：
错误是针对布局的生成类。
的堆栈跟踪无法猜测包名称：
java.lang.IllegalArgumentException: couldn't make a guess for com.PackageName.ClassName
at com.squareup.javapoet.Util.checkArgument(Util.java:64)
at com.squareup.javapoet.ClassName.bestGuess(ClassName.java:177)
at android.databinding.tool.ext.ExtKt.toTypeName(ext.kt:244)
at android.databinding.tool.ext.ExtKt.toTypeName(ext.kt:192)
at android.databinding.tool.ext.ExtKt.toTypeName(ext.kt:173)
at android.databinding.tool.writer.BaseLayoutBinderWriter.createVariableFields(BaseLayoutBinderWriter.kt:229)
at android.databinding.tool.writer.BaseLayoutBinderWriter.access$createVariableFields(BaseLayoutBinderWriter.kt:39)
at android.databinding.tool.writer.BaseLayoutBinderWriter$createType$1.invoke(BaseLayoutBinderWriter.kt:67)
at android.databinding.tool.writer.BaseLayoutBinderWriter$createType$1.invoke(BaseLayoutBinderWriter.kt:39)
at android.databinding.tool.ext.Javapoet_extKt.classSpec(javapoet_ext.kt:39)
at android.databinding.tool.writer.BaseLayoutBinderWriter.createType(BaseLayoutBinderWriter.kt:63)
at android.databinding.tool.writer.BaseLayoutBinderWriter.write(BaseLayoutBinderWriter.kt:59)
at android.databinding.tool.BaseDataBinder.generateAll(BaseDataBinder.kt:65)
at com.android.build.gradle.internal.tasks.databinding.DataBindingGenBaseClassesTask$CodeGenerator.run(DataBindingGenBaseClassesTask.kt:212)
at com.android.build.gradle.internal.tasks.databinding.DataBindingGenBaseClassesTask$writeBaseClasses$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:52)
at com.android.build.gradle.internal.tasks.databinding.DataBindingGenBaseClassesTask$writeBaseClasses$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:31)
at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:91)
at com.android.build.gradle.internal.tasks.databinding.DataBindingGenBaseClassesTask.writeBaseClasses(DataBindingGenBaseClassesTask.kt:240)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:103)
at org.gradle.api.internal.project.taskfactory.IncrementalTaskInputsTaskAction.doExecute(IncrementalTaskInputsTaskAction.java:46)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:41)
at org.gradle.api.internal.project.taskfactory.AbstractIncrementalTaskAction.execute(AbstractIncrementalTaskAction.java:25)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:28)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$5.run(ExecuteActionsTaskExecuter.java:404)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:393)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:376)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.access$200(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$TaskExecution.execute(ExecuteActionsTaskExecuter.java:213)
at org.gradle.internal.execution.steps.ExecuteStep.lambda$execute$0(ExecuteStep.java:32)
at java.util.Optional.map(Optional.java:215)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:32)
at org.gradle.internal.execution.steps.ExecuteStep.execute(ExecuteStep.java:26)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:58)
at org.gradle.internal.execution.steps.CleanupOutputsStep.execute(CleanupOutputsStep.java:35)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:48)
at org.gradle.internal.execution.steps.ResolveInputChangesStep.execute(ResolveInputChangesStep.java:33)
at org.gradle.internal.execution.steps.CancelExecutionStep.execute(CancelExecutionStep.java:39)
at org.gradle.internal.execution.steps.TimeoutStep.executeWithoutTimeout(TimeoutStep.java:73)
at org.gradle.internal.execution.steps.TimeoutStep.execute(TimeoutStep.java:54)
at org.gradle.internal.execution.steps.CatchExceptionStep.execute(CatchExceptionStep.java:35)
at org.gradle.internal.execution.steps.CreateOutputsStep.execute(CreateOutputsStep.java:51)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:45)
at org.gradle.internal.execution.steps.SnapshotOutputsStep.execute(SnapshotOutputsStep.java:31)
at org.gradle.internal.execution.steps.CacheStep.executeWithoutCache(CacheStep.java:201)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:70)
at org.gradle.internal.execution.steps.CacheStep.execute(CacheStep.java:45)
at org.gradle.internal.execution.steps.BroadcastChangingOutputsStep.execute(BroadcastChangingOutputsStep.java:49)
at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:43)
at org.gradle.internal.execution.steps.StoreSnapshotsStep.execute(StoreSnapshotsStep.java:32)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:38)
at org.gradle.internal.execution.steps.RecordOutputsStep.execute(RecordOutputsStep.java:24)
at org.gradle.internal.execution.steps.SkipUpToDateStep.executeBecause(SkipUpToDateStep.java:96)
at org.gradle.internal.execution.steps.SkipUpToDateStep.lambda$execute$0(SkipUpToDateStep.java:89)
at java.util.Optional.map(Optional.java:215)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:54)
at org.gradle.internal.execution.steps.SkipUpToDateStep.execute(SkipUpToDateStep.java:38)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:77)
at org.gradle.internal.execution.steps.ResolveChangesStep.execute(ResolveChangesStep.java:37)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:36)
at org.gradle.internal.execution.steps.legacy.MarkSnapshottingInputsFinishedStep.execute(MarkSnapshottingInputsFinishedStep.java:26)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:90)
at org.gradle.internal.execution.steps.ResolveCachingStateStep.execute(ResolveCachingStateStep.java:48)
at org.gradle.internal.execution.impl.DefaultWorkExecutor.execute(DefaultWorkExecutor.java:33)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:120)
at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionStateTaskExecuter.execute(ResolveBeforeExecutionStateTaskExecuter.java:75)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:108)
at org.gradle.api.internal.tasks.execution.ResolveBeforeExecutionOutputsTaskExecuter.execute(ResolveBeforeExecutionOutputsTaskExecuter.java:67)
at org.gradle.api.internal.tasks.execution.ResolveAfterPreviousExecutionStateTaskExecuter.execute(ResolveAfterPreviousExecutionStateTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:94)
at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:95)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:73)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:49)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:49)
at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:43)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:355)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:343)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:336)
at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:322)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:134)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker$1.execute(DefaultPlanExecutor.java:129)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:202)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:193)
at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:129)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:745)
答案 3 :(得分：0)
我有同样的问题。我按以下步骤修复了它。
1。在build.gradle（应用程序级别）中添加kotlin“ KAPT”插件
apply plugin: 'kotlin-kapt'
2。添加此依赖性并重建您的应用
implementation "androidx.lifecycle:lifecycle-extensions:2.2.0-rc02"