Pull down refresh and pull up more (implemented using SwipeRefreshLayout and ListView), swiperefreshlayout

Pull down refresh and pull up more (implemented using SwipeRefreshLayout and ListView), swiperefreshlayout

SwipeRefreshLayout is a pull-down refresh component updated by Google in the support v4 19.1 library, making it easier to refresh.

1: add the SwipeRefreshLayout and Listview components to the layout.

<? Xml version = "1.0" encoding = "UTF-8"?> <RelativeLayout style = "@ style/BaseStyle. White" xmlns: android = "http://schemas.android.com/apk/res/android"> <! -- Pull-down refresh --> <android. support. v4.widget. SwipeRefreshLayout android: id = "@ + id/srl_refresh" style = "@ style/BaseStyle"> <! -- Pull up more --> <ListView android: id = "@ + id/lv_person_goods" style = "@ style/BaseStyle" android: gravity = "center" android: horizontalSpacing = "@ dimen/margin_standard" android: numColumns = "2" android: scrollbarStyle = "outsideOverlay" android: verticalSpacing = "@ dimen/margin_standard"/> </android. support. v4.widget. swipeRefreshLayout> <! -- View displayed when data is empty --> <TextView android: id = "@ + id/TV _no_data" style = "@ style/BaseStyle. fullWrap "android: layout_marginTop =" @ dimen/textview_width_small "android: gravity =" center_horizontal "android: text =" no data "android: textColor =" @ color/text_title_standard "android: textSize = "@ dimen/font_size_small" android: visibility = "gone"/> </RelativeLayout>

2: Use on the home page

/*** Created by pengkv on 2014/12/5. * My Baby list page, used to select to add to the auction site */public class MySaleGoodsListViewActivity extends VolleyActivity implements IInit, IResponseHandler, IPagination, SwipeRefreshLayout. onRefreshListener {private int auctionID; private GoodsInfoViewModel mViewModel; private TextView mEmptyTV; // blank view private ListView mListView; // session List private PersonGoodsListAdapter mAdapter; // adapter private Swip ERefreshLayout mSwipeRefreshLayout; // pull down and refresh the layout @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_me_auction_goods_list); init () ;}@ Override public void init () {ActionBarUtil. setup (this, "my shop baby"); auctionID = getIntent (). getIntExtra (EnumIntentKey. AUCTION_ID.toString (), 0); mListView = (ListView) findViewById (R. id. lv_p Erson_goods); mEmptyTV = (TextView) findViewById (R. id. TV _no_data); mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById (R. id. srl_refresh); // pull-down refresh component mSwipeRefreshLayout. setOnRefreshListener (this); // set the refresh listener mSwipeRefreshLayout. setColorSchemeResources (R. color. background_blue_standard, R. color. white, R. color. background_blue_standard, R. color. white); // set the color of the pull-down refresh component. mViewModel = new GoodsInfoViewModel (); FetchData (FIRST); // get favorite list Data} @ Override public void fetchData (int tag) {GetGoodsListForSellParam param = new GetGoodsListForSellParam (Data. getUserID (), 1, mViewModel. getPageIndex (), Data. PAGE_SIZE_MEDIUM); SquareApi. getGoodsListForSell (this, param, tag);}/*** update adapter */@ Override protected void onRestart () {super. onRestart (); mViewModel. reset (); fetchData (FIRST); // get favorite list data} @ Override public Void updateUI (Object response, final int tag) {if (response = null) return; if (tag = FIRST) {// get the mViewModel of favorite list data. inflate (response); // determines whether the list adapter mAdapter is empty for paging. if (mAdapter = null) {// when the adapter is empty, mSwipeRefreshLayout. setRefreshing (false); // the pull-down refresh component stops refreshing mAdapter = new PersonGoodsListAdapter (this, mViewModel. getList (); mListView. setAdapter (mAdapter); // ListView is bound to a favorite adapter/*** pull more */mListView. se TOnScrollListener (new AbsListView. onScrollListener () {@ Override public void onScrollStateChanged (AbsListView view, int scrollState) {switch (scrollState) {case SCROLL_STATE_IDLE: if (mListView. getLastVisiblePosition () = mViewModel. getList (). size ()-1) {if (! MViewModel. isComplete () {fetchNewData (FIRST) ;}} break ;}@ Override public void onScroll (AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount ){}}); mListView. setEmptyView (mEmptyTV); // bind the image to the favorite list ListView} else {mAdapter. notifyDataSetChanged (); // adapter updates data} mListView. setOnItemClickListener (new AdapterView. onItemClickListener () {@ Override public void onItemClick (Ad ApterView <?> Parent, View view, int position, long id) {Intent I = new Intent (); if (getIntent (). getBooleanExtra (EnumIntentKey. IS_SELECT_LINK.toString (), false) {// select the sending link I. putExtra (EnumIntentKey. GOODS_ID.toString (), mViewModel. getList (). get (position ). getGoodsID (); I. putExtra (EnumIntentKey. GOODS_NAME.toString (), mViewModel. getList (). get (position ). getGoodsName (); setResult (RESULT_ OK, I);} else {// Add to session I. setClass (MySaleGoodsListViewActivity. this, AddAuctionGoodsActivity. class); I. putExtra (EnumIntentKey. AUCTION_GOODS_ID.toString (), mViewModel. getList (). get (position ). getGoodsID (); I. putExtra (EnumIntentKey. IS_DO.toString (), true); I. putExtra (EnumIntentKey. AUCTION_ID.toString (), auctionID); startActivity (I) ;}finish () ;}}}@ Override public void fetchNewData (int tag) {mViewModel. increasePageIndex (); fetchData (FIRST); // obtain the list of favorite items} @ Override public void onRefresh () {mViewModel. reset (); // reset the page index and completion status mAdapter = null; // clear the adapter fetchData (FIRST); // get the list of favorite items }}

Resolution:

(Pull-down refresh) The SwipeRefreshLayout. OnRefreshListener interface must be implemented on the home page.

 @Override    public void onRefresh() {    }

Update in Method

(Pull more) Pull more need to listen to setOnScrollListener () method

  mListView.setOnScrollListener(new AbsListView.OnScrollListener() {                    @Override                    public void onScrollStateChanged(AbsListView view, int scrollState) {                        switch (scrollState) {                            case SCROLL_STATE_IDLE:                                if (mListView.getLastVisiblePosition() == mViewModel.getList().size() - 1) {                                    if (!mViewModel.isComplete()) {                                        fetchNewData(FIRST);                                    }                                }                                break;                        }                    }                    @Override                    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {                    }                });