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 onCreate(Bundle savedInstanceState)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 onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)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 */ initDataset()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