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;
}

}
}

}