Question

   let bubbleView : UIView = {

    let view = UIView()
    view.backgroundColor = blueColor
    view.translatesAutoresizingMaskIntoConstraints = false
    view.layer.cornerRadius = 16
    view.layer.masksToBounds = true
    return view
}()


let messageImageView : UIImageView = {

    let imageView = UIImageView()
    imageView.translatesAutoresizingMaskIntoConstraints = false
    imageView.layer.cornerRadius = 16
    imageView.layer.masksToBounds = true
    imageView.contentMode = .scaleAspectFill
    return imageView

}()
init(frame: CGRect) {

    super.init(frame: frame)
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}

//在＆＃34; super.init（frame：frame）＆＃34;中得到错误因为必须调用超类的指定初始化程序＆＃39; UITableViewCell＆＃39;请提前帮助我解决此问题......

Answer 1

我猜您提供的代码来自17/09/07 14:06:57 WARN TaskSetManager: Lost task 0.0 in stage 17.0 (TID 5369, 213.248.211.179, executor 1): java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089) at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2006) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:80) at org.apache.spark.scheduler.Task.run(Task.scala:108) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 17/09/07 14:06:57 INFO TaskSetManager: Starting task 0.1 in stage 17.0 (TID 5370, 213.248.211.179, executor 1, partition 0, PROCESS_LOCAL, 5058 bytes) 17/09/07 14:06:57 INFO TaskSetManager: Lost task 0.1 in stage 17.0 (TID 5370) on 213.248.211.179, executor 1: java.lang.ClassCastException (cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD) [duplicate 1] 17/09/07 14:06:57 INFO TaskSetManager: Starting task 0.2 in stage 17.0 (TID 5371, 213.248.211.179, executor 1, partition 0, PROCESS_LOCAL, 5058 bytes) 17/09/07 14:06:57 INFO TaskSetManager: Lost task 0.2 in stage 17.0 (TID 5371) on 213.248.211.179, executor 1: java.lang.ClassCastException (cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD) [duplicate 2] 17/09/07 14:06:57 INFO TaskSetManager: Starting task 0.3 in stage 17.0 (TID 5372, 213.248.211.179, executor 1, partition 0, PROCESS_LOCAL, 5058 bytes) 17/09/07 14:06:57 INFO TaskSetManager: Lost task 0.3 in stage 17.0 (TID 5372) on 213.248.211.179, executor 1: java.lang.ClassCastException (cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD) [duplicate 3] 17/09/07 14:06:57 ERROR TaskSetManager: Task 0 in stage 17.0 failed 4 times; aborting job 17/09/07 14:06:57 INFO TaskSchedulerImpl: Removed TaskSet 17.0, whose tasks have all completed, from pool 17/09/07 14:06:57 INFO TaskSchedulerImpl: Cancelling stage 17 17/09/07 14:06:57 INFO DAGScheduler: ResultStage 17 (show at getDwData.scala:704) failed in 0.111 s due to Job aborted due to stage failure: Task 0 in stage 17.0 failed 4 times, most recent failure: Lost task 0.3 in stage 17.0 (TID 5372, 213.248.211.179, executor 1): java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089) at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2006) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:80) at org.apache.spark.scheduler.Task.run(Task.scala:108) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335) 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) Driver stacktrace: 17/09/07 14:06:57 INFO DAGScheduler: Job 1 failed: show at getDwData.scala:704, took 0.223107 s Exception in thread "main" org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 17.0 failed 4 times, most recent failure: Lost task 0.3 in stage 17.0 (TID 5372, 213.248.211.179, executor 1): java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089) at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2006) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:80) at org.apache.spark.scheduler.Task.run(Task.scala:108) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1499) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1487) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1486) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1486) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:814) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:814) at scala.Option.foreach(Option.scala:257) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:814) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1714) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1669) at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1658) at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:630) at org.apache.spark.SparkContext.runJob(SparkContext.scala:2022) at org.apache.spark.SparkContext.runJob(SparkContext.scala:2043) at org.apache.spark.SparkContext.runJob(SparkContext.scala:2062) at org.apache.spark.sql.execution.SparkPlan.executeTake(SparkPlan.scala:336) at org.apache.spark.sql.execution.CollectLimitExec.executeCollect(limit.scala:38) at org.apache.spark.sql.Dataset.org$apache$spark$sql$Dataset$$collectFromPlan(Dataset.scala:2853) at org.apache.spark.sql.Dataset$$anonfun$head$1.apply(Dataset.scala:2153) at org.apache.spark.sql.Dataset$$anonfun$head$1.apply(Dataset.scala:2153) at org.apache.spark.sql.Dataset$$anonfun$55.apply(Dataset.scala:2837) at org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:65) at org.apache.spark.sql.Dataset.withAction(Dataset.scala:2836) at org.apache.spark.sql.Dataset.head(Dataset.scala:2153) at org.apache.spark.sql.Dataset.take(Dataset.scala:2366) at org.apache.spark.sql.Dataset.showString(Dataset.scala:245) at org.apache.spark.sql.Dataset.show(Dataset.scala:644) at org.apache.spark.sql.Dataset.show(Dataset.scala:603) at uk.nominet.renewals_analysis.uk.nominet.renewals_analysis.getDwData$.getDwData(getDwData.scala:704) at uk.nominet.renewals_analysis.uk.nominet.renewals_analysis.getDwData$.main(getDwData.scala:863) at uk.nominet.renewals_analysis.uk.nominet.renewals_analysis.getDwData.main(getDwData.scala) Caused by: java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.apache.spark.rdd.RDD.org$apache$spark$rdd$RDD$$dependencies_ of type scala.collection.Seq in instance of org.apache.spark.rdd.MapPartitionsRDD at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089) at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2006) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75) at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:80) at org.apache.spark.scheduler.Task.run(Task.scala:108) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335) 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)类型类。因此，在初始化程序中，您应该为此类调用设计的初始化程序。不是来自UITableViewCell

UIView类的指定初始化程序是

UITableViewCell

所以在课堂上你应该覆盖这个初始化器：

init(style: UITableViewCellStyle, reuseIdentifier: String?)

Answer 2

来自init(style: UITableViewCellStyle, reuseIdentifier: String?)的文档：

此方法是该类的指定初始值设定项。

您呼叫的super初始化程序适用于UIView，而不是UITableViewCell。

必须调用超类的指定初始化程序＆＃39; UITableViewCell＆＃39;

2 个答案: