1/* 2 * Copyright (C) 2015 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 17package com.example.android.support.design.widget; 18 19import android.content.Context; 20import android.support.v7.widget.RecyclerView; 21import android.util.TypedValue; 22import android.view.LayoutInflater; 23import android.view.ViewGroup; 24import android.widget.TextView; 25 26import com.example.android.support.design.R; 27 28import java.util.ArrayList; 29import java.util.Collections; 30 31public class SimpleStringRecyclerViewAdapter 32 extends RecyclerView.Adapter<SimpleStringRecyclerViewAdapter.ViewHolder> { 33 34 private int mBackground; 35 36 private ArrayList<String> mValues; 37 38 public static class ViewHolder extends RecyclerView.ViewHolder { 39 public String mBoundString; 40 public TextView mTextView; 41 42 public ViewHolder(TextView v) { 43 super(v); 44 mTextView = v; 45 } 46 47 @Override 48 public String toString() { 49 return super.toString() + " '" + mTextView.getText(); 50 } 51 } 52 53 public String getValueAt(int position) { 54 return mValues.get(position); 55 } 56 57 public SimpleStringRecyclerViewAdapter(Context context, String[] strings) { 58 TypedValue val = new TypedValue(); 59 if (context.getTheme() != null) { 60 context.getTheme().resolveAttribute(R.attr.selectableItemBackground, val, true); 61 } 62 mBackground = val.resourceId; 63 mValues = new ArrayList<>(); 64 Collections.addAll(mValues, strings); 65 } 66 67 @Override 68 public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 69 TextView textView = (TextView) LayoutInflater.from(parent.getContext()) 70 .inflate(android.R.layout.simple_list_item_1, parent, false); 71 textView.setBackgroundResource(mBackground); 72 return new ViewHolder(textView); 73 } 74 75 @Override 76 public void onBindViewHolder(ViewHolder holder, int position) { 77 holder.mBoundString = mValues.get(position); 78 holder.mTextView.setText(position + ": " + mValues.get(position)); 79 } 80 81 @Override 82 public int getItemCount() { 83 return mValues.size(); 84 } 85} 86