Android - OnScrollListener for Staggered Grid View

Question

Please excuse my English, I\'m French...

So, I\'ve got a question for my Android App. I\'ve to integrate a grid view as Pinterest style. I found this lib : Staggered

Answer 1

UPDATE:
After testing,
Calling notifyDataSetChanged() for StaggeredGridView Adapter case to reset the scroll position to 0 (Start of the Views).
Instead use PinterestLikeAdapterView

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I have add loadMoreListener to the StaggeredGridView
steps:
1- add a loadmore Interface and booelan isLoading (at the top of the class)

public interface OnLoadMoreListener {
    public boolean onLoadMore();
}

private boolean mIsLoading;
private OnLoadMoreListener mLoadMoreListener;

2- find trackMotionScroll function, in the else of deltaY > 0
and after the up = false; add

if (overhang <= 80) { // 80 is how nearest to the end. ZERO mean the end of list
    // scrolling down and almost reach the end of list
    if (false == mIsLoading && null != mLoadMoreListener) {
        if (false == mLoadMoreListener.onLoadMore()) {
            mIsLoading = true;
            Log.d(TAG, "loadMore");
        }
    }
}

3- add setListener() and loadComplated() functions

public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
    this.mLoadMoreListener = onLoadMoreListener;
}

public void loadMoreCompleated() {
    mIsLoading = false;
}

HOW to use:
1- define a loadMoreListener in your Activity/Fragment

private StaggeredGridView.OnLoadMoreListener loadMoreListener = new StaggeredGridView.OnLoadMoreListener() {

    @Override
    public boolean onLoadMore() {
        loading.setVisibility(View.VISIBLE);
        // load more data from internet (not in the UI thread)

        return true; // true if you have more data to load, false you dont have more data to load 
    }
};

2- when you done data loading and add it to the adapter call

private void doneLoading() {
    gridView.loadMoreCompleated();
    loading.setVisibility(View.GONE);
}