Home | History | Annotate | Download | only in com.example.android.recyclerview 
      1 /*
      2 * Copyright (C) 2014 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 *      http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License.
     15 */
     16 
     17 package com.example.android.recyclerview;
     18 
     19 import android.os.Bundle;
     20 import android.support.v4.app.Fragment;
     21 import android.support.v7.widget.LinearLayoutManager;
     22 import android.support.v7.widget.RecyclerView;
     23 import android.view.LayoutInflater;
     24 import android.view.View;
     25 import android.view.ViewGroup;
     26 
     27 /**
     28  * Demonstrates the use of RecyclerView with a LinearLayoutManager.
     29  */
     30 public class RecyclerViewFragment extends Fragment {
     31 
     32     private static final String TAG = "RecyclerViewFragment";
     33 
     34     protected RecyclerView mRecyclerView;
     35     protected RecyclerView.Adapter mAdapter;
     36     protected RecyclerView.LayoutManager mLayoutManager;
     37     protected String[] mDataset;
     38 
     39     @Override
     40     public void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42 
     43         // Initialize dataset, this data would usually come from a local content provider or
     44         // remote server.
     45         initDataset();
     46     }
     47 
     48     @Override
     49     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     50             Bundle savedInstanceState) {
     51         View rootView = inflater.inflate(R.layout.recycler_view_frag, container, false);
     52         rootView.setTag(TAG);
     53 
     54         // BEGIN_INCLUDE(initializeRecyclerView)
     55         mRecyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);
     56 
     57         // LinearLayoutManager is used here, this will layout the elements in a similar fashion
     58         // to the way ListView would layout elements. The RecyclerView.LayoutManager defines how
     59         // elements are laid out.
     60         mLayoutManager = new LinearLayoutManager(getActivity());
     61         mRecyclerView.setLayoutManager(mLayoutManager);
     62 
     63         mAdapter = new CustomAdapter(mDataset);
     64         // Set CustomAdapter as the adapter for RecyclerView.
     65         mRecyclerView.setAdapter(mAdapter);
     66         // END_INCLUDE(initializeRecyclerView)
     67 
     68         return rootView;
     69     }
     70 
     71     /**
     72      * Generates Strings for RecyclerView's adapter. This data would usually come
     73      * from a local content provider or remote server.
     74      */
     75     private void initDataset() {
     76         mDataset = new String[60];
     77         for (int i=0; i < 60; i++) {
     78             mDataset[i] = "This is element #" + i;
     79         }
     80     }
     81 }
     82