我在流程之前有这个:

protected void onPostExecute(SortedSet<RatedMessage> result) {
    List<Object> list=Arrays.asList(result.toArray());
    lancon.putExtra("results", list.toArray()); // as serializable
}


然后在另一部分

Object o=this.getIntent().getSerializableExtra("results");
//at this point the o holds the correct value (checked by debugger)
RatedMessage[] rm = (RatedMessage[]) o;// this line hangs out w ClassCastException
resultSet = new TreeSet<RatedMessage>(new Comp());
Collections.addAll(resultSet, rm);


为什么得到ClassCastException?

最佳答案

最终我以这种方式工作:

Serializable s = this.getIntent().getSerializableExtra("results");
Object[] o = (Object[]) s;
if (o != null) {
    resultSet = new TreeSet<RatedMessage>(new Comp());
    for (int i = 0; i < o.length; i++) {
        if (o[i] instanceof RatedMessage) {
            resultSet.add((RatedMessage) o[i]);
        }
    }
}

关于java - SortedSet,数组和可序列化的序列化问题,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3136922/

10-11 10:41