CODEWITHSUNDEEP
androidandroid-fragmentshashmapandroid-savedstate
marko kurt
marko kurt

Reputation: 205

Put HashMap<Integer, List<Integer>> in savedInstanceState

I have a problem with adding values in savedInstanceState in Android. I tried to find solution on the internet, but I cannot seem to find a solution. Maybe some of you might know where the problem is. I need to put HashMap> to savedInstanceState, and retrieve that onCreate method. Has anyone encountered and solved this problem? Thank you for your time.

Upvotes: 4

Views: 2293

Answers (2)

Mujahid Khan
Mujahid Khan

Reputation: 1834

Try :

private HashMap<String, String> savedInstanceMap = new HashMap<>();


@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
    savedInstanceMap.put("selectedFuel_type_Id", selectedFuel_type_Id);
    outState.putSerializable("savedBundle", savedInstanceMap);
    super.onSaveInstanceState(outState);
}

 @Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (savedInstanceState != null) {
        savedInstanceMap = (HashMap<String, String>) savedInstanceState.getSerializable("savedBundle");
        selectedFuel_type_Id = savedInstanceMap.get("selectedFuel_type_Id");
    }

Upvotes: 0

Blackbelt
Blackbelt

Reputation: 157457

you can use putSerializable. E.g.

savedInstanceState.putSerializable("KEY", hashMapInstance);

Upvotes: 9

Related Questions