ArrayAdapter、SimpleAdapter和BaseAdapter示例代码

import android.content.Context;

import android.util.Pair;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.BaseAdapter;

import android.widget.SimpleAdapter;

import android.widget.TextView;

import com.example.rex.mytest.R;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

/**

 * Created by Rex on 2016/3/7.

 */

public class Sample {

    protected void testAdapter() {

        Context context = null;

        final String[] data = new String[]{"1", "2", "3", "4", "5"};

        // ---------------------------------------ArrayAdapter-----------------------------------------

        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(context, R.layout.dialog_list_item, data);//data是数组或List集合

        // ---------------------------------------SimpleAdapter-----------------------------------------

        List<Map<String, Object>> mData = new ArrayList<Map<String, Object>>();

        for (int i = 0; i < 10; i++) {

            Map<String, Object> item = new HashMap<String, Object>();

            item.put("image", R.drawable.star);

            item.put("title", "title-" + i);

            item.put("text", "text-" + i);

            mData.add(item);

        }

        SimpleAdapter simpleAdapter = new SimpleAdapter(context, mData, R.layout.list_item, new String[]{"image", "title", "text"}, new int[]{R.id.image, R.id.title, R.id.text});

        // ---------------------------------------BaseAdapter is abstract class-----------------------------------------

        class MyAdapter extends BaseAdapter {

            private Context context;

            private List<Pair<String, String>> datas;

            public MyAdapter(Context context, List<Pair<String, String>> list) {

                this.context = context;

                datas = list;

            }

            @Override

            public int getCount() {

                return datas.size();

            }

            @Override

            public Object getItem(int position) {

                return datas.get(position);

            }

            @Override

            public long getItemId(int position) {

                return position;

            }

            @Override

            public View getView(int position, View convertView, ViewGroup parent) {

                if (convertView == null) {

                    convertView = View.inflate(context, R.layout.list_item, null);

                }

                TextView title = (TextView) convertView.findViewById(R.id.title);

                TextView text = (TextView) convertView.findViewById(R.id.text);

                Pair<String, String> pair = datas.get(position);

                title.setText(pair.first);

                text.setText(pair.second);

                return convertView;

            }

        }

    }

}