我尝试使用react-native run-android在ubuntu下启动本机反应,但它失败并出现错误：

FAILURE: Build Failed with an exception.

    * What went wrong:
    Execution Failed for task ':app:compileDebugJavaWithJavac'.
    > Could not find tools.jar

我该如何解决？

全输出：

$react-native run-android
    Starting JS server...
    /bin/sh: 1: adb: not found
    Building and installing the app on the device (cd android && ./gradlew installDebug...
    :app:preBuild UP-TO-DATE
    :app:preDebugBuild UP-TO-DATE
    :app:checkDebugManifest
    :app:preReleaseBuild UP-TO-DATE
    :app:prepareComAndroidSupportAppcompatV72301Library UP-TO-DATE
    :app:prepareComAndroidSupportRecyclerviewV72301Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportV42321Library UP-TO-DATE
    :app:prepareComFacebookFrescoDrawee0110Library UP-TO-DATE
    :app:prepareComFacebookFrescoFbcore0110Library UP-TO-DATE
    :app:prepareComFacebookFrescoFresco0110Library UP-TO-DATE
    :app:prepareComFacebookFrescoImagepipeline0110Library UP-TO-DATE
    :app:prepareComFacebookFrescoImagepipelineBase0110Library UP-TO-DATE
    :app:prepareComFacebookFrescoImagepipelineOkhttp30110Library UP-TO-DATE
    :app:prepareComFacebookReactReactNative0361Library UP-TO-DATE
    :app:prepareComFacebookSoloaderSoloader010Library UP-TO-DATE
    :app:prepareOrgWebkitAndroidJscR174650Library UP-TO-DATE
    :app:prepareDebugDependencies
    :app:compileDebugAidl UP-TO-DATE
    :app:compileDebugRenderscript UP-TO-DATE
    :app:generateDebugBuildConfig UP-TO-DATE
    :app:generateDebugAssets UP-TO-DATE
    :app:mergeDebugAssets UP-TO-DATE
    :app:generateDebugResValues UP-TO-DATE
    :app:generateDebugResources UP-TO-DATE
    :app:mergeDebugResources UP-TO-DATE
    :app:bundleDebugJsAndAssets SKIPPED
    :app:processDebugManifest UP-TO-DATE
    :app:processDebugResources UP-TO-DATE
    :app:generateDebugSources UP-TO-DATE
    :app:processDebugJavaRes UP-TO-DATE
    :app:compileDebugJavaWithJavac Failed

    FAILURE: Build Failed with an exception.

    * What went wrong:
    Execution Failed for task ':app:compileDebugJavaWithJavac'.
    > Could not find tools.jar

运行echo $JAVA_HOME给出/usr/lib / jvm / java-8-openjdk-amd64