CODEWITHSUNDEEP
javaandroidrx-javarx-java2
Ashraf Patel
Ashraf Patel

Reputation: 749

Rxjava2 distinctUntilChanged() not working properly after first time

I am trying to use .distinctUntilChanged() and its not passing value to switchmap() after first time.

RxTextView.textChanges(etUserQuery).debounce(300, TimeUnit.MILLISECONDS)
    .observeOn(AndroidSchedulers.mainThread()).filter(charSequence -> {
        if (charSequence.toString().isEmpty()) {
            etUserQuery.setHint("Please type username");
                return false;
            } else
                return true;
        }).distinctUntilChanged()
        .switchMap(charSequence -> vm.dataFromNetwork(charSequence.toString()))
        .subscribe(fetchUserResponce -> {
            noDataText.setVisibility(fetchUserResponce.getItems().size() == 0 ? View.VISIBLE : View.GONE);
            mUsersListAdapter.updateData(fetchUserResponce.getItems());
        }));

Is it correct place to use .distinctUntilChanged()?

Upvotes: 2

Views: 2999

Answers (1)

akarnokd
akarnokd

Reputation: 69997

From the comments:

The CharSequence the textChanges gives you is mutable and should be turned into String before it is passed along.

textChanges gives you the same CharSequence reference and distinctUntilChange relying on Object.equals() will find it equal to itself all the time.

Upvotes: 10

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