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;
            }

        }
    }

}