Sorting a custom ListView Adapter with multiple ArrayLists

Question

I've a custom ListView with 5 ArrayLists in the adaptor.

private ArrayList<String> name = new ArrayList<>();
private ArrayList<String> message = new ArrayList<>();
private ArrayList<Long> time = new ArrayList<>();
private ArrayList<String> imageId = new ArrayList<>();
private ArrayList<String> extras = new ArrayList<>();

ArrayList time contains remaining time in milliseconds. I want to display the list from lower to higher time left. If i just perform Collection.sort on a single ArrayList, others will remain unchanged. How can i sort all the ArrayLists accordingly with time.

I am passing all the ArrayLists to my custom adaptor at once.

Any suggestions?

Are the arraylists having a one-to-one relationship to each other? If so create a data model for it, and sort by the time field, the others will follow accordingly. — lurker0152
– lurker0152, Commented Mar 19, 2020 at 14:37

Stanislav Batura · Accepted Answer · 2020-03-19 14:34:56Z

1

I think better to create a new class like this

class Class {
   String name;
   String message;
   Long time;
   String imageId;
   String extras;
}

Then creating single ArrayList then you can sort it by any fields by creating Comparator you want

answered Mar 19, 2020 at 14:34

Stanislav Batura

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