我正在以编程方式删除INFO Socket connection established to (open ip)/(open ip):2181, initiating session (org.apache.zookeeper.ClientCnxn)
[2018-07-20 16:05:11,102] INFO Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn)
[2018-07-20 16:05:11,763] ERROR Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING
at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply$mcV$sp(ZooKeeperClient.scala:225)
at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:221)
at kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:221)
at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:250)
at kafka.zookeeper.ZooKeeperClient.kafka$zookeeper$ZooKeeperClient$$waitUntilConnected(ZooKeeperClient.scala:221)
at kafka.zookeeper.ZooKeeperClient.<init>(ZooKeeperClient.scala:95)
at kafka.zk.KafkaZkClient$.apply(KafkaZkClient.scala:1538)
at kafka.server.KafkaServer.kafka$server$KafkaServer$$createZkClient$1(KafkaServer.scala:345)
at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:369)
at kafka.server.KafkaServer.startup(KafkaServer.scala:202)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
at kafka.Kafka$.main(Kafka.scala:92)
at kafka.Kafka.main(Kafka.scala)
[2018-07-20 16:05:11,774] INFO shutting down (kafka.server.KafkaServer)
[2018-07-20 16:05:11,787] WARN (kafka.utils.CoreUtils$)
java.lang.NullPointerException
at kafka.server.KafkaServer$$anonfun$shutdown$5.apply$mcV$sp(KafkaServer.scala:569)
at kafka.utils.CoreUtils$.swallow(CoreUtils.scala:85)
at kafka.server.KafkaServer.shutdown(KafkaServer.scala:569)
at kafka.server.KafkaServer.startup(KafkaServer.scala:326)
at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:38)
at kafka.Kafka$.main(Kafka.scala:92)
at kafka.Kafka.main(Kafka.scala)
[2018-07-20 16:05:11,793] INFO shut down completed (kafka.server.KafkaServer)
[2018-07-20 16:05:11,796] ERROR Exiting Kafka. (kafka.server.KafkaServerStartable)
[2018-07-20 16:05:11,802] INFO shutting down (kafka.server.KafkaServer)
上的文件，但似乎无权访问它。我具有签名级应用许可，可以在外壳中执行/data/user/0/com.android.providers.downloads/cache和adb root，但是su收到Runtime.getRuntime().exec(su)异常。当我尝试执行Permission denied并检查它是否存在时，它返回false。缓存文件夹的权限为File file = new File(path)。
如何从DownloadManager缓存目录中删除文件？
更新
最好的方法似乎是使用drwxrwx--x将其从缓存文件夹中删除。虽然没有足够的文档证明这样做。
答案 0 :(得分：0)
当可用时，最好的方法似乎是DownloadManager remove(downloadId)。实际上，它会显示一条消息Deleting /data/data/com.android.providers.downloads/cache/binary.apk via provider delete
如果您希望downloadIds列表删除整个缓存，则程序员可能需要使用DownloadManager查询并按状态完成过滤才能删除所有缓存。