1 package com.jarrah.demo;  2   3 import java.util.ArrayList;  4   5 import android.os.Bundle;  6 import android.support.v7.app.ActionBarActivity;  7 import android.support.v7.widget.LinearLayoutManager;  8 import android.support.v7.widget.RecyclerView;  9 import android.view.View; 10 import android.view.ViewGroup; 11  12 public abstract class RecyclerViewActivity extends ActionBarActivity{ 13      14      15     protected RecyclerView mRecyclerView; 16     protected Adapter<String> mAdapter; 17      18     @Override 19     protected void onCreate(Bundle savedInstanceState) { 20         super.onCreate(savedInstanceState); 21         mRecyclerView = new RecyclerView(this); 22         setContentView(mRecyclerView); 23          24         //配置RecyclerView 可以提高执行效率, 前提你要知道有多少不变的item 25         // use this setting to improve performance if you know that changes 26         // in content do not change the layout size of the RecyclerView 27         mRecyclerView.setHasFixedSize(true); 28          29         //初始化适配器 30         mAdapter = new Adapter<String>() { 31  32             @Override 33             public ViewHolder<String> onCreateViewHolder(ViewGroup group, 34                     int position) { 35                 return newViewHolder(group, position); 36             } 37              38         }; 39          40         mRecyclerView.setAdapter(mAdapter); 41          42         //设置一个垂直方向的layout manager 43         int orientation = LinearLayoutManager.VERTICAL; 44         mRecyclerView.setLayoutManager(getLayoutManager(orientation)); 45     } 46  47  48     protected LinearLayoutManager getLayoutManager(int orientation) { 49         return new LinearLayoutManager(this, orientation, false); 50     } 51  52  53      54     /** 55      * 实例化一个ViewHolder 56      * @param group 57      * @param position 58      * @return 59      */ 60     public abstract ViewHolder<String> newViewHolder(ViewGroup group, int position); 61  62  63     public static abstract class Adapter<T> extends RecyclerView.Adapter<ViewHolder<T>> { 64          65         private ArrayList<T> mList; 66          67         public T getItem(int position) { 68             return mList == null ? null : mList.get(position); 69         } 70          71         @Override 72         public int getItemCount() { 73             return mList == null ? 0 : mList.size(); 74         } 75  76         @Override 77         public void onBindViewHolder( 78                 ViewHolder<T> vh, int position) { 79             vh.onBind(getItem(position), vh.itemView); 80         } 81          82         public void setData(ArrayList<T> data) { 83             mList = data; 84             notifyDataSetChanged(); 85         } 86     } 87      88     public static abstract class ViewHolder<T> extends RecyclerView.ViewHolder { 89          90         public ViewHolder(View v) { 91             super(v); 92         } 93          94         /** 95          * view holder 绑定数据 96          * @param data 97          * @param v 98          */ 99         public abstract void onBind(T data, View v);100         101     }102     103 }

package com.jarrah.demo;import java.util.ArrayList;import java.util.Arrays;import android.os.Bundle;import android.support.v7.widget.LinearLayoutManager;import android.view.Menu;import android.view.MenuInflater;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.TextView;import android.widget.Toast;public class DemoActivity extends RecyclerViewActivity{    @Override    public ViewHolder<String> newViewHolder(ViewGroup group, int position) {                final TextView tv = new TextView(this);        tv.setPadding(20, 20, 20, 20);        tv.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                String text = tv.getText().toString();                Toast.makeText(DemoActivity.this, text, Toast.LENGTH_SHORT).show();            }        });                ViewHolder<String> viewHolder = new ViewHolder<String>(tv) {                        @Override            public void onBind(String data, View v) {                TextView item = (TextView) v;                item.setText(data);            }        };                return viewHolder;    }        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);                //设置数据        ArrayList<String> data = http://www.mamicode.com/new ArrayList<String>();        data.addAll(Arrays.asList(sCheeses));        mAdapter.setData(data);    }            @Override    public boolean onCreateOptionsMenu(Menu menu) {        MenuInflater inflater = getMenuInflater();        inflater.inflate(R.menu.demo, menu);        return true;    }        @Override    public boolean onOptionsItemSelected(MenuItem item) {        //切换方向        if (item.getItemId() == R.id.action_orientation) {            LinearLayoutManager lm = (LinearLayoutManager) mRecyclerView.getLayoutManager();            int orientation = lm.getOrientation() == 0 ? 1 : 0;            mRecyclerView.setLayoutManager(getLayoutManager(orientation));        }        return super.onOptionsItemSelected(item);    }        public static final String[] sCheeses = {         "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",         "Acorn", "Adelost", "Affidelice au Chablis", "Afuega‘l Pitu", "Airag", "Airedale",         "Aisy Cendre", "Allgauer Emmentaler", "Alverca", "Ambert", "American Cheese",         "Ami du Chambertin", "Anejo Enchilado", "Anneau du Vic-Bilh", "Anthoriro", "Appenzell",         "Aragon", "Ardi Gasna", "Ardrahan", "Armenian String", "Aromes au Gene de Marc",         "Asadero", "Asiago", "Aubisque Pyrenees", "Autun", "Avaxtskyr", "Baby Swiss",         "Babybel", "Baguette Laonnaise", "Bakers", "Baladi", "Balaton", "Bandal", "Banon",         "Barry‘s Bay Cheddar", "Basing", "Basket Cheese", "Bath Cheese", "Bavarian Bergkase",         "Baylough", "Beaufort", "Beauvoorde", "Beenleigh Blue", "Beer Cheese", "Bel Paese",         "Bergader", "Bergere Bleue", "Berkswell", "Beyaz Peynir", "Bierkase", "Bishop Kennedy",         "Blarney", "Bleu d‘Auvergne", "Bleu de Gex", "Bleu de Laqueuille",         "Bleu de Septmoncel", "Bleu Des Causses", "Blue", "Blue Castello", "Blue Rathgore",         "Blue Vein (Australian)", "Blue Vein Cheeses", "Bocconcini", "Bocconcini (Australian)",         "Boeren Leidenkaas", "Bonchester", "Bosworth", "Bougon", "Boule Du Roves",         "Boulette d‘Avesnes", "Boursault", "Boursin", "Bouyssou", "Bra", "Braudostur",         "Breakfast Cheese", "Brebis du Lavort", "Brebis du Lochois", "Brebis du Puyfaucon",         "Bresse Bleu", "Brick", "Brie", "Brie de Meaux", "Brie de Melun", "Brillat-Savarin",         "Brin", "Brin d‘ Amour", "Brin d‘Amour", "Brinza (Burduf Brinza)",         "Briquette de Brebis", "Briquette du Forez", "Broccio", "Broccio Demi-Affine",         "Brousse du Rove", "Bruder Basil", "Brusselae Kaas (Fromage de Bruxelles)", "Bryndza",         "Buchette d‘Anjou", "Buffalo", "Burgos", "Butte", "Butterkase", "Button (Innes)",         "Buxton Blue", "Cabecou", "Caboc", "Cabrales", "Cachaille", "Caciocavallo", "Caciotta",         "Caerphilly", "Cairnsmore", "Calenzana", "Cambazola", "Camembert de Normandie",         "Canadian Cheddar", "Canestrato", "Cantal", "Caprice des Dieux", "Capricorn Goat",         "Capriole Banon", "Carre de l‘Est", "Casciotta di Urbino", "Cashel Blue", "Castellano",         "Castelleno", "Castelmagno", "Castelo Branco", "Castigliano", "Cathelain",         "Celtic Promise", "Cendre d‘Olivet", "Cerney", "Chabichou", "Chabichou du Poitou",         "Chabis de Gatine", "Chaource", "Charolais", "Chaumes", "Cheddar",         "Cheddar Clothbound", "Cheshire", "Chevres", "Chevrotin des Aravis", "Chontaleno",         "Civray", "Coeur de Camembert au Calvados", "Coeur de Chevre", "Colby", "Cold Pack",         "Comte", "Coolea", "Cooleney", "Coquetdale", "Corleggy", "Cornish Pepper",         "Cotherstone", "Cotija", "Cottage Cheese", "Cottage Cheese (Australian)",         "Cougar Gold", "Coulommiers", "Coverdale", "Crayeux de Roncq", "Cream Cheese",         "Cream Havarti", "Crema Agria", "Crema Mexicana", "Creme Fraiche", "Crescenza",         "Croghan", "Crottin de Chavignol", "Crottin du Chavignol", "Crowdie", "Crowley",         "Cuajada", "Curd", "Cure Nantais", "Curworthy", "Cwmtawe Pecorino",         "Cypress Grove Chevre", "Danablu (Danish Blue)", "Danbo", "Danish Fontina",         "Daralagjazsky", "Dauphin", "Delice des Fiouves", "Denhany Dorset Drum", "Derby",         "Dessertnyj Belyj", "Devon Blue", "Devon Garland", "Dolcelatte", "Doolin",         "Doppelrhamstufel", "Dorset Blue Vinney", "Double Gloucester", "Double Worcester",         "Dreux a la Feuille", "Dry Jack", "Duddleswell", "Dunbarra", "Dunlop", "Dunsyre Blue",         "Duroblando", "Durrus", "Dutch Mimolette (Commissiekaas)", "Edam", "Edelpilz",         "Emental Grand Cru", "Emlett", "Emmental", "Epoisses de Bourgogne", "Esbareich",         "Esrom", "Etorki", "Evansdale Farmhouse Brie", "Evora De L‘Alentejo", "Exmoor Blue",         "Explorateur", "Feta", "Feta (Australian)", "Figue", "Filetta", "Fin-de-Siecle",         "Finlandia Swiss", "Finn", "Fiore Sardo", "Fleur du Maquis", "Flor de Guia",         "Flower Marie", "Folded", "Folded cheese with mint", "Fondant de Brebis",         "Fontainebleau", "Fontal", "Fontina Val d‘Aosta", "Formaggio di capra", "Fougerus",         "Four Herb Gouda", "Fourme d‘ Ambert", "Fourme de Haute Loire", "Fourme de Montbrison",         "Fresh Jack", "Fresh Mozzarella", "Fresh Ricotta", "Fresh Truffles", "Fribourgeois",         "Friesekaas", "Friesian", "Friesla", "Frinault", "Fromage a Raclette", "Fromage Corse",         "Fromage de Montagne de Savoie", "Fromage Frais", "Fruit Cream Cheese",         "Frying Cheese", "Fynbo", "Gabriel", "Galette du Paludier", "Galette Lyonnaise",         "Galloway Goat‘s Milk Gems", "Gammelost", "Gaperon a l‘Ail", "Garrotxa", "Gastanberra",         "Geitost", "Gippsland Blue", "Gjetost", "Gloucester", "Golden Cross", "Gorgonzola",         "Gornyaltajski", "Gospel Green", "Gouda", "Goutu", "Gowrie", "Grabetto", "Graddost",         "Grafton Village Cheddar", "Grana", "Grana Padano", "Grand Vatel",         "Grataron d‘ Areches", "Gratte-Paille", "Graviera", "Greuilh", "Greve",         "Gris de Lille", "Gruyere", "Gubbeen", "Guerbigny", "Halloumi",         "Halloumy (Australian)", "Haloumi-Style Cheese", "Harbourne Blue", "Havarti",         "Heidi Gruyere", "Hereford Hop", "Herrgardsost", "Herriot Farmhouse", "Herve",         "Hipi Iti", "Hubbardston Blue Cow", "Hushallsost", "Iberico", "Idaho Goatster",         "Idiazabal", "Il Boschetto al Tartufo", "Ile d‘Yeu", "Isle of Mull", "Jarlsberg",         "Jermi Tortes", "Jibneh Arabieh", "Jindi Brie", "Jubilee Blue", "Juustoleipa",         "Kadchgall", "Kaseri", "Kashta", "Kefalotyri", "Kenafa", "Kernhem", "Kervella Affine",         "Kikorangi", "King Island Cape Wickham Brie", "King River Gold", "Klosterkaese",         "Knockalara", "Kugelkase", "L‘Aveyronnais", "L‘Ecir de l‘Aubrac", "La Taupiniere",         "La Vache Qui Rit", "Laguiole", "Lairobell", "Lajta", "Lanark Blue", "Lancashire",         "Langres", "Lappi", "Laruns", "Lavistown", "Le Brin", "Le Fium Orbo", "Le Lacandou",         "Le Roule", "Leafield", "Lebbene", "Leerdammer", "Leicester", "Leyden", "Limburger",         "Lincolnshire Poacher", "Lingot Saint Bousquet d‘Orb", "Liptauer", "Little Rydings",         "Livarot", "Llanboidy", "Llanglofan Farmhouse", "Loch Arthur Farmhouse",         "Loddiswell Avondale", "Longhorn", "Lou Palou", "Lou Pevre", "Lyonnais", "Maasdam",         "Macconais", "Mahoe Aged Gouda", "Mahon", "Malvern", "Mamirolle", "Manchego",         "Manouri", "Manur", "Marble Cheddar", "Marbled Cheeses", "Maredsous", "Margotin",         "Maribo", "Maroilles", "Mascares", "Mascarpone", "Mascarpone (Australian)",            };    }