Home | History | Annotate | Download | only in development 
      1 /*
      2  * Copyright (C) 2007 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.android.development;
     18 
     19 import android.content.Context;
     20 import android.view.View;
     21 import android.view.ViewGroup;
     22 import android.view.LayoutInflater;
     23 import android.widget.BaseAdapter;
     24 
     25 import java.util.List;
     26 
     27 public abstract class ArrayAdapter<E> extends BaseAdapter
     28 {
     29     public ArrayAdapter(Context context, int layoutRes) {
     30         mContext = context;
     31         mInflater = (LayoutInflater)context.getSystemService(
     32             Context.LAYOUT_INFLATER_SERVICE);
     33         mLayoutRes = layoutRes;
     34     }
     35 
     36     public void setSource(List<E> list) {
     37         mList = list;
     38     }
     39 
     40     public abstract void bindView(View view, E item);
     41 
     42     public E itemForPosition(int position) {
     43         if (mList == null) {
     44             return null;
     45         }
     46 
     47         return mList.get(position);
     48     }
     49 
     50     public int getCount() {
     51         return mList != null ? mList.size() : 0;
     52     }
     53 
     54     public Object getItem(int position) {
     55         return position;
     56     }
     57 
     58     public long getItemId(int position) {
     59         return position;
     60     }
     61 
     62     public View getView(int position, View convertView, ViewGroup parent) {
     63         View view;
     64         if (convertView == null) {
     65             view = mInflater.inflate(mLayoutRes, parent, false);
     66         } else {
     67             view = convertView;
     68         }
     69         bindView(view, mList.get(position));
     70         return view;
     71     }
     72 
     73     private final Context mContext;
     74     private final LayoutInflater mInflater;
     75     private final int mLayoutRes;
     76     private List<E> mList;
     77 }
     78 
     79