How to pass SortedSet as an add-on?

Question

I have a service that creates a result SortedSet. I need to transfer it to another Intentwho will use it. First placed in the notification area, and then, when the user performs it, he will need to activate the action.

Since it itself belongs to SortedSet, it is not Parcelableand Serializabletherefore it will not work. One element in is SortedSetalready exhaustive, and it is used perfectly, but I need the whole set.

How to convey SortedSetas intention additionally?

Answer 1

I found out:

// passes as serializable and as Array
intent.putExtra("results", result.toArray()); 

Then read, restoring the array to SortedSet.

In my case, it was:

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]);
        }
    }
}

resultSet .