Java RecyclerView.setOnScrollListener方法代碼示例

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
/**
 * Set the view as header.
 *
 * @param header The inflated header
 * @param view   The RecyclerView to set scroll listeners
 */
public void setParallaxHeader(View header, final RecyclerView view) {
    mRecyclerView = view;
    mHeader = new CustomRelativeWrapper(header.getContext(), mShouldClipView);
    mHeader.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    mHeader.addView(header, new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
    view.setOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            if (mHeader != null) {
                translateHeader(mRecyclerView.getLayoutManager().getChildAt(0) == mHeader ?
                        mRecyclerView.computeVerticalScrollOffset() : mHeader.getHeight());

            }
        }
    });
}
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    RecyclerView view = new RecyclerView(getActivity());
    view.setLayoutManager(new LinearLayoutManager(getActivity(),
            LinearLayoutManager.VERTICAL, false));
    view.setAdapter(mAdapter);
    DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(view.getContext(),
            LinearLayoutManager.VERTICAL);
    view.addItemDecoration(dividerItemDecoration);
    view.setOnScrollListener(new OnLoadMoreListener() {
        @Override
        public void onLoadMore() {
            loadPage();
        }
    });
    return view;
}
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
/**
 * {@inheritDoc}
 */
@Override
public void bindView(@NonNull RecyclerView view) {
    super.bindView(view);

    mSwipeItemTouchListener = new SwipeItemTouchListener(view.getContext(), mGroupBasicAdapter, getContentView());
    if (mSwipeCardActionEdge != -1) {
        mSwipeItemTouchListener.setActionEdge(mSwipeCardActionEdge);
    }

    view.addOnItemTouchListener(mSwipeItemTouchListener);
    view.setOnScrollListener(new RecyclerView.OnScrollListener(){
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            if (recyclerView != null) {
                scrolledY += dy;
            }
        }
    });
}
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
private void initRecyclerView(){

        RecyclerView recyclerView = (RecyclerView) searchActivity.findViewById(R.id.recycler);
        recyclerView.setAdapter(classAdapter);

        userClasses = getFormatedClasses(userClasses);
        searchActivity.classAdapter = new ClassAdapter(userClasses, getApplicationContext(), recyclerView);
        classAdapter = searchActivity.classAdapter;
        classAdapter.setOnItemClickListener(callJoinClass());
        recyclerView.setAdapter(classAdapter);

        RecyclerView.LayoutManager layout = new LinearLayoutManager(application,
                LinearLayoutManager.VERTICAL, false);
        recyclerView.setLayoutManager(layout);

        recyclerView.setOnScrollListener(new HidingScrollListener() {
            @Override
            public void onHide() {
                searchActivity.hideViews();
            }
            @Override
            public void onShow() {
                searchActivity.showViews();
            }
        });
    }
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
@Override
protected void initViews() {
    setContentView(R.layout.activity_share);
    recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

    // Layout Managers:
    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    recyclerView.setItemAnimator(new DefaultItemAnimator());

    // Adapter:
    String[] adapterData = new String[]{"Alabama", "Alaska", "Arizona", "Arkansas", "California",
            "Colorado", "Connecticut", "Delaware", "Florida", "Georgia", "Hawaii", "Idaho",
            "Illinois", "Indiana", "Iowa", "Kansas", "Kentucky", "Louisiana", "Maine", "Maryland",
            "Massachusetts", "Michigan", "Minnesota", "Mississippi", "Missouri", "Montana",
            "Nebraska", "Nevada", "New Hampshire", "New Jersey", "New Mexico", "New York",
            "North Carolina", "North Dakota", "Ohio", "Oklahoma", "Oregon", "Pennsylvania",
            "Rhode Island", "South Carolina", "South Dakota", "Tennessee", "Texas", "Utah",
            "Vermont", "Virginia", "Washington", "West Virginia", "Wisconsin", "Wyoming"};
    mDataSet = new ArrayList<String>(Arrays.asList(adapterData));
    mAdapter = new RecyclerViewAdapter(this, recyclerView, mDataSet);
    ((RecyclerViewAdapter) mAdapter).setMode(Attributes.Mode.Single);
    recyclerView.setAdapter(mAdapter);

    /* Listeners */
    recyclerView.setOnScrollListener(onScrollListener);

    try {
        new ItemTouchBuilder()
                .setList(mDataSet)
                .setAdapter(mAdapter)
                .setSwappable(false)
                .create(recyclerView)
                .attachToRecyclerView(recyclerView);
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_webtoon_view);

        // get the intent information.
        inIntent = getIntent();
        webtoonHashID = inIntent.getStringExtra("webtoonHashID");
        chapterHashID = inIntent.getStringExtra("chapterHashID");
        chapterTitle = inIntent.getStringExtra("chapterTitle");

        setTitle(chapterTitle);

        // Link the RecyclerView, and generate the dbManager.
        webtoonViewRecyclerView = (RecyclerView)findViewById(R.id.webtoon_view_recycler_view);
        dbManager = new DBManager(this);

        // no need for asking the permission as WebtoonListActivity checked it.
        initializeLists();

        // setting the recyclerView.
        WebtoonViewRecyclerAdapter adapter = new WebtoonViewRecyclerAdapter(this, webtoonImages);
        webtoonViewRecyclerView.setAdapter(adapter);
        webtoonViewRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        // Make action bar hidden when scrolled.
//        webtoonViewRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
//            @Override
//            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
//                super.onScrolled(recyclerView, dx, dy);
//                if (dy > 40) {
//                    isScrolledDown = true;
//                } else if (dy < -5) {
//                    isScrolledDown = false;
//                }
//            }
//
//            @Override
//            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
//                super.onScrollStateChanged(recyclerView, newState);
//                if (isScrolledDown) {
//                    getSupportActionBar().hide();
//                } else {
//                    getSupportActionBar().show();
//                }
//            }
//        });

        webtoonViewRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                if (isAtBottom(recyclerView)) {
                    Intent intent = new Intent(getApplicationContext(), ARToonActivity.class);
                    getApplicationContext().startActivity(intent);
                }
            }
        });
    }
 

import android.support.v7.widget.RecyclerView; //導入方法依賴的package包/類
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    // 實例化發布問題按鈕
    btnPublish = (FloatingActionButton)view.findViewById(R.id.button_publish);
    btnPublish.setOnClickListener(this);
    // 實例化刷新布局
    mSwipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_refresh_layout);
    mSwipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_light,
            android.R.color.holo_red_light,
            android.R.color.holo_green_light,
            android.R.color.holo_orange_light);
    TypedValue typed_value = new TypedValue();
    getActivity().getTheme().resolveAttribute(android.support.v7.appcompat.R.attr.actionBarSize, typed_value, true);
    mSwipeRefreshLayout.setProgressViewOffset(false, 0, getResources().getDimensionPixelSize(typed_value.resourceId));
    mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            // 下拉刷新
            page = 1;
            new LoadQuestionList().execute();
        }
    });
    mSwipeRefreshLayout.setRefreshing(true);
    // 實例化RecyclerView
    mRecyclerView = (RecyclerView) view.findViewById(R.id.question_list);
    final LinearLayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
    mRecyclerView.setLayoutManager(mLayoutManager);
    mAdapter = new QuestionViewAdapter(getActivity(), mList);
    mRecyclerView.setAdapter(mAdapter);
    mRecyclerView.setItemAnimator(new DefaultItemAnimator());
    mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            int visibleItemCount = mLayoutManager.getChildCount();
            int totalItemCount = mLayoutManager.getItemCount();
            int pastVisiblesItems = mLayoutManager.findFirstVisibleItemPosition();
            if (loading) {
                if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) {
                    // 達到底部加載更多
                    loading = false;
                    mSwipeRefreshLayout.setRefreshing(true);
                    new LoadQuestionList().execute();
                }
            }
            // 自動隱藏發布按鈕
            if (Math.abs(dy) > ScrollOffset)
                if (dy > 0)
                    btnPublish.hide(true);
                else
                    btnPublish.show(true);
        }
    });
    // 開始載入問題操作
    new LoadQuestionList().execute();
}