cundong/HeaderAndFooterRecyclerView

HeaderAndFooterRecyclerView

Introduction

HeaderAndFooterRecyclerView is a RecyclerView solution that supports addHeaderView, addFooterView to a RecyclerView.

Through this library, you can implement RecyclerView's Page Loading by dynamically modify the FooterView's State, such as "loading", "loading error", "loading success", "slipping to the bottom".

How to Use It

• Add HeaderView, FooterView

    mHeaderAndFooterRecyclerViewAdapter = new HeaderAndFooterRecyclerViewAdapter(mDataAdapter);
    mRecyclerView.setAdapter(mHeaderAndFooterRecyclerViewAdapter);
    mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

    //add a HeaderView
    RecyclerViewUtils.setHeaderView(mRecyclerView, new SampleHeader(this));

    //add a FooterView
    RecyclerViewUtils.setFooterView(mRecyclerView, new SampleFooter(this));

• LinearLayout / GridLayout / StaggeredGridLayout layout of RecyclerView paging load

mRecyclerView.addOnScrollListener(mOnScrollListener);

private EndlessRecyclerOnScrollListener mOnScrollListener = new EndlessRecyclerOnScrollListener() {

        @Override
        public void onLoadNextPage(View view) {
            super.onLoadNextPage(view);

            LoadingFooter.State state = RecyclerViewStateUtils.getFooterViewState(mRecyclerView);
            if(state == LoadingFooter.State.Loading) {
                Log.d("@Cundong", "the state is Loading, just wait..");
                return;
            }

            mCurrentCounter = mDataList.size();

            if (mCurrentCounter < TOTAL_COUNTER) {
                // loading more
                RecyclerViewStateUtils.setFooterViewState(EndlessLinearLayoutActivity.this, mRecyclerView, REQUEST_COUNT, LoadingFooter.State.Loading, null);
                requestData();
            } else {
                //the end
                RecyclerViewStateUtils.setFooterViewState(EndlessLinearLayoutActivity.this, mRecyclerView, REQUEST_COUNT, LoadingFooter.State.TheEnd, null);
            }
        }
    };

Attention

If you have already added a HeaderView for RecyclerView by RecyclerViewUtils.setHeaderView(mRecyclerView, view); , then call the ViewHolder 's getAdapterPosition()、getLayoutPosition(), ,the returned value will be affected by the addition of the HeaderView (the return position is the real position + headerCounter).

Therefore, in this case, please use: RecyclerViewUtils.getAdapterPosition(mRecyclerView, ViewHolder.this), RecyclerViewUtils.getLayoutPosition(mRecyclerView, ViewHolder.this).

Demo

• Add HeaderView, FooterView

• Support for ply loading of the LinearLayout layout RecyclerView

• Support for paging loads of GridLayout layout RecyclerView

• Supports paging loads of StaggeredGridLayout layout RecyclerView

• The page load fails when the GridLayout layout is RecyclerView

License

Copyright 2015 Cundong

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.