一个标准的自定义适配器的编写

package com.siyehuazhilian.control;

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.siyehuazhilian.smsdemo.R;
import com.siyeuazhilian.model.SMS;

public class MyListViewAdapter extends BaseAdapter {
	private ArrayList<SMS> list;
	private LayoutInflater inflater;
	private Context context;

	public void setList(ArrayList<SMS> list) {
		this.list = list;
	}

	public void addData(SMS sms) {
		if (list == null) {
			list = new ArrayList<SMS>();
		}
		list.add(sms);
	}

	public MyListViewAdapter(Context context) {
		this.context = context;
		inflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	@Override
	public int getCount() {
		return list == null ? 0 : list.size();
	}

	@Override
	public Object getItem(int position) {
		return list.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHodler hodler;
		if (convertView == null) {
			convertView = inflater.inflate(R.layout.sms_listview_item, null);
			hodler = new ViewHodler();

			hodler.intTextView = (TextView) convertView
					.findViewById(R.id.textview_smsin);
			hodler.outTextView = (TextView) convertView
					.findViewById(R.id.textview_smsout);
			// 设置tag
			convertView.setTag(hodler);
		} else {
			hodler = (ViewHodler) convertView.getTag();
		}
		// 倒序问题
		position = getCount() - 1 - position;

		if (list.get(position).getType() == 1) {
			hodler.intTextView.setVisibility(View.VISIBLE);
			hodler.intTextView.setText(list.get(position).getBody());
		} else if (list.get(position).getType() == 2) {
			hodler.outTextView.setVisibility(View.VISIBLE);
			hodler.outTextView.setText(list.get(position).getBody());
		}

		return convertView;
	}

	class ViewHodler {
		TextView intTextView;
		TextView outTextView;
	}

}


你可能感兴趣的:(一个标准的自定义适配器的编写)