Java 无法从最终类继承

我在Windows7（64位）上安装了Android studio 0.4.2。尝试从studio创建简单项目，但出现错误：

无法从最终类继承

• 我尝试了studio64.exe和studio.exe
• 我尝试JDK1.7U45x86和JDK1.7U51x64
• 回购协议1.9级

在我的虚拟机XPx32中，所有这些文件a-studio都能完美工作（我只是复制了android studio

c:\Users\%user%.AndroidStudioPreview，c:\Users\%user%.gradle从我的真实vachine变为虚拟版）

我支持ntlm的代理

日志为：

2014-01-19 12:31:20,504 [  22420]   WARN - nal.AbstractExternalSystemTask - Cannot inherit from final class 
com.intellij.openapi.externalSystem.model.ExternalSystemException: Cannot inherit from final class
    at org.jetbrains.plugins.gradle.service.project.GradleExecutionHelper.execute(GradleExecutionHelper.java:185)
    at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:113)
    at org.jetbrains.plugins.gradle.service.project.GradleProjectResolver.resolveProjectInfo(GradleProjectResolver.java:61)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:41)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl$1.produce(RemoteExternalSystemProjectResolverImpl.java:37)
    at com.intellij.openapi.externalSystem.service.remote.AbstractRemoteExternalSystemService.execute(AbstractRemoteExternalSystemService.java:59)
    at com.intellij.openapi.externalSystem.service.remote.RemoteExternalSystemProjectResolverImpl.resolveProjectInfo(RemoteExternalSystemProjectResolverImpl.java:37)
    at com.intellij.openapi.externalSystem.service.remote.wrapper.ExternalSystemProjectResolverWrapper.resolveProjectInfo(ExternalSystemProjectResolverWrapper.java:49)
    at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:48)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:137)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:123)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:471)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$4$2.run(ExternalSystemUtil.java:549)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$TaskRunnable.run(ProgressManagerImpl.java:464)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)
    at com.intellij.openapi.progress.ProgressManager.executeProcessUnderProgress(ProgressManager.java:209)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:212)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:171)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl$8.run(ProgressManagerImpl.java:373)
    at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:436)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
    at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:153)

已更新

在我的项目中，有3个子项目。 顶级build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.7.+'
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

apply plugin: 'android'

android {
    compileSdkVersion 18
    buildToolsVersion "19.0.1"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 18
    }

    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {
    compile project(':wheel')
    compile project(':appRater')
    compile files('libs/android-support-v13.jar')
    compile files('libs/libGoogleAnalyticsServices.jar')
}

主项目build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.7.+'
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

apply plugin: 'android'

android {
    compileSdkVersion 18
    buildToolsVersion "19.0.1"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 18
    }

    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {
    compile project(':wheel')
    compile project(':appRater')
    compile files('libs/android-support-v13.jar')
    compile files('libs/libGoogleAnalyticsServices.jar')
}

在所有子项目中，build.gradle是：

apply plugin: 'android-library'

android {
    compileSdkVersion 18
    buildToolsVersion "19.0.1"

    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 18
    }

    release {
        runProguard false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    }
}

---

这似乎是android studio中的一个bug，不具体，但与

Cannot inherit from final Class

如果下面报告的bug也能解决您的问题，请尝试评论9

现在断开链接

#评论9是

关闭Android Studio，备份并从Studio安装目录中删除所有这些文件，然后重新启动，可能会对您有所帮助

android-studio/plugins/android/lib/builder-0.6.1.jar
android-studio/plugins/android/lib/builder-model-0.6.1.jar
android-studio/plugins/gradle/lib/gradle-base-services-1.8.jar
android-studio/plugins/gradle/lib/gradle-build-setup-1.8.jar
android-studio/plugins/gradle/lib/gradle-core-1.8.jar
android-studio/plugins/gradle/lib/gradle-messaging-1.8.jar
android-studio/plugins/gradle/lib/gradle-native-1.8.jar
android-studio/plugins/gradle/lib/gradle-plugins-1.8.jar
android-studio/plugins/gradle/lib/gradle-tooling-api-1.8.jar
android-studio/plugins/gradle/lib/gradle-wrapper-1.8.jar
android-studio/plugins/gradle/lib/guava-11.0.2.jar

---

除了上面的答案，在删除文件之前，我打开了一个坏掉的项目，Android Studio告诉我gradle过时了，消息中有一个小URL，上面写着fix gradle。。。这确实起了作用，但并没有完全解决我的问题。之后，我删除了上面的文件，一切正常。

包括您的build.gradle文件。添加build.gradle文件看起来不错。检查我的答案是否对你有帮助。