CODEWITHSUNDEEP
android
arun
arun

Reputation: 153

RecyclerView visible count is giving the total items in Recyclerview

I am using RecyclerView to show list of items. The total items are 10, but visible at a time is 3. But when i use recyclerView.getChildCount() method to get the visible count, it is giving me 10, instead of 3. What can be the issue. I am trying to implement pagination. So everytime my visible count is coming same as totalitemcount, and as a result my load more is getting called continuously till all the pages are loaded. Below is my code.

 public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);

    if (dy > 0) {
        onScrolled();
    }



    visibleItemCount = recyclerView.getChildCount();
    totalItemCount = mLinearLayoutManager.getItemCount();
    firstVisibleItem = mLinearLayoutManager.findFirstVisibleItemPosition();

    if (loading) {
        if (totalItemCount > previousTotal) {
            loading = false;
            previousTotal = totalItemCount;
        }
    }
    if (!loading
            && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
        // End has been reached

        // Do something
        current_page++;

        onLoadMoreData(current_page);

        loading = true;
    }

}

Upvotes: 4

Views: 6818

Answers (2)

BAIJU SHARMA
BAIJU SHARMA

Reputation: 296

To get the number of items visible on the screen of the recycler view.

rvBreakingNews.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                super.onScrolled(recyclerView, dx, dy)

                val mLayoutManger = recyclerView.layoutManager as LinearLayoutManager
                //To get the total Number of items visible on the screen
                val visibleItemCount = mLayoutManger.childCount 
              //To get the total items loaded in the RecyclerView
                val totalItemCount = mLayoutManger.itemCount 

        })

Upvotes: 0

Tomas Jablonskis
Tomas Jablonskis

Reputation: 4376

Check this answer: Get visible items in RecyclerView

Based on that answer alone, you could do something like this: 

LinearLayoutManager layoutManager = ((LinearLayoutManager)mRecyclerView.getLayoutManager());

int visibleItemCount = layoutManager.findLastVisibleItemPosition() - layoutManager.findFirstVisibleItemPosition();

Hope it helps.

Upvotes: 7

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