Viewapger+fragment的切换加XMLpull解析

功能实现了viewpager切换fragment，利用xutils网络请求xml数据，进行解析利用的解析为pull解析

这里由于示例，只做了一个界面  导入的jar包有  gson xutils

首先网络请求  有个bean包，

package com.lqy.text.bean;

public class bean {

	private String portrait;
	private String author;
	private String body;
	private String pubDate;

	public bean() {
		super();
		// TODO Auto-generated constructor stub
	}

	public bean(String portrait, String author, String body, String pubDate) {
		super();
		this.portrait = portrait;
		this.author = author;
		this.body = body;
		this.pubDate = pubDate;
	}

	@Override
	public String toString() {
		return "bean [portrait=" + portrait + ", author=" + author + ", body="
				+ body + ", pubDate=" + pubDate + "]";
	}

	public String getPortrait() {
		return portrait;
	}

	public void setPortrait(String portrait) {
		this.portrait = portrait;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}

	public String getBody() {
		return body;
	}

	public void setBody(String body) {
		this.body = body;
	}

	public String getPubDate() {
		return pubDate;
	}

	public void setPubDate(String pubDate) {
		this.pubDate = pubDate;
	}

}

其次，mactivity,实现了界面的切换

package com.lqy.text;

import java.util.ArrayList;

import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends FragmentActivity implements OnClickListener {

	private ListView listview;
	private ViewPager viewpager;
	private TextView text1;
	private TextView text2;
	private TextView text3;
	ArrayList tlist = new ArrayList();

	@SuppressWarnings("deprecation")
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		// 控件的查找赋值
		findlayout();
		// 添加fragment切换的适配器
		viewpageradapter();
		// 进行滑动的监听
		viewpagerscrociew();
		// 缓存当前页面的左右两侧的页面，（解决界面左右滑动超过两个信息丢失问题）
		viewpager.setOffscreenPageLimit(2);
	}

	@SuppressWarnings("deprecation")
	private void viewpagerscrociew() {
		viewpager.setOnPageChangeListener(new OnPageChangeListener() {

			@Override
			public void onPageSelected(int arg0) {
				// TODO Auto-generated method stub
				// 对textview值进行切换
				for (int i = 0; i < tlist.size(); i++) {
					if (i == arg0) {
						tlist.get(i).setTextColor(Color.RED);
					} else {
						tlist.get(i).setTextColor(Color.BLACK);
					}
				}

			}

			@Override
			public void onPageScrolled(int arg0, float arg1, int arg2) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onPageScrollStateChanged(int arg0) {
				// TODO Auto-generated method stub

			}
		});
	}

	private void viewpageradapter() {

		viewpager.setAdapter(new FragmentPagerAdapter(
				getSupportFragmentManager()) {

			@Override
			public int getCount() {
				// TODO Auto-generated method stub
				return tlist.size();
			}

			@Override
			public Fragment getItem(int arg0) {
				// TODO Auto-generated method stub
				// 必须添加v4包的fragment
				Fragment fragment = null;
				switch (arg0) {
				case 0:
					fragment = new fragment1();

					break;
				case 1:
					fragment = new fragment2();

					break;
				case 2:
					fragment = new fragment3();

					break;

				default:
					break;
				}
				return fragment;
			}

		});
	}

	private void findlayout() {
		// 首先找到需要寻找的控件
		viewpager = (ViewPager) findViewById(R.id.viewpager);
		text1 = (TextView) findViewById(R.id.text1);
		text2 = (TextView) findViewById(R.id.text2);
		text3 = (TextView) findViewById(R.id.text3);
		// 将textview控件添加进textview
		tlist.add(text1);
		tlist.add(text2);
		tlist.add(text3);
		// 点击事件的添加
		for (TextView t : tlist) {
			t.setOnClickListener(this);
		}
	}

	// 点击切换fragment的按钮
	@Override
	public void onClick(View arg0) {
		// TODO Auto-generated method stub
		switch (arg0.getId()) {
		case R.id.text1:

			viewpager.setCurrentItem(0);
			break;
		case R.id.text2:

			viewpager.setCurrentItem(1);
			break;
		case R.id.text3:

			viewpager.setCurrentItem(2);
			break;

		default:
			break;
		}
	}

}

mactivity的xml

fragment1,只添加了一个示例

package com.lqy.text;

import java.io.ByteArrayInputStream;
import java.util.ArrayList;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;
import com.lqy.text.bean.bean;

import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.Fragment;
import android.util.Xml;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

public class fragment1 extends Fragment {
	private View view;
	private ListView listview1;
	private String url = "http://www.oschina.net/action/api/tweet_list";
	ArrayList onelist = new ArrayList();
	private XmlPullParser newPullParser;
	private int eventType;
	private bean b;
	boolean refresh = false;
	private mybaseadapater adapter;

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		view = inflater.inflate(R.layout.fragment1, container, false);
		return view;
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onActivityCreated(savedInstanceState);
		listview1 = (ListView) view.findViewById(R.id.listview1);
		HttpUtils http = new HttpUtils();
		http.send(HttpMethod.GET, url, new RequestCallBack() {

			@Override
			public void onFailure(HttpException arg0, String arg1) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onSuccess(ResponseInfo arg0) {
				// TODO Auto-generated method stub
				String info = arg0.result;
				System.out.println(info + "=========");
				// 读取xml的流
				final ByteArrayInputStream input = new ByteArrayInputStream(
						info.getBytes());
				// 利用方法解析，放入集合

				ArrayList twolist = startannlye(input);
				System.out.println(twolist + "00000000000000000000");
				if (refresh) {
					onelist.clear();
				}
				onelist.addAll(twolist);

				if (adapter == null) {
					adapter = new mybaseadapater(getActivity(), onelist);
					listview1.setAdapter(adapter);
				} else {
					adapter.notifyDataSetChanged();
				}
			}

		});
	}

	private ArrayList startannlye(ByteArrayInputStream input) {
		// TODO Auto-generated method stub
		ArrayList threelist = new ArrayList();

		try {
			// 开
			newPullParser = Xml.newPullParser();
			newPullParser.setInput(input, "utf-8");
			eventType = newPullParser.getEventType();

			while (eventType != XmlPullParser.END_DOCUMENT) {
				String name = newPullParser.getName();
				switch (eventType) {
				case XmlPullParser.START_TAG:
					if ("tweet".equals(name)) {
						b = new bean();
					} else if ("portrait".equals(name)) {
						b.setPortrait(newPullParser.nextText());
					} else if ("body".equals(name)) {
						b.setBody(newPullParser.nextText());
					} else if ("pubData".equals(name)) {
						b.setPubDate(newPullParser.nextText());
					} else if ("author".equals(name)) {
						b.setAuthor(newPullParser.nextText());
					}
					break;
				case XmlPullParser.END_TAG:
					if ("tweet".equals(name)) {
						threelist.add(b);
						b = null;
					}
					break;

				default:
					break;
				}
				eventType = newPullParser.next();
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return threelist;
	}

}

fragment的适配器

package com.lqy.text;

 

import java.util.ArrayList;

 

import com.lidroid.xutils.BitmapUtils;
import com.lqy.text.bean.bean;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

@SuppressLint("ViewHolder")
public class mybaseadapater extends BaseAdapter {
	private Context context;
	private ArrayList list;
	private View inflate;
	private TextView author;
	private TextView body;
	private TextView data;
	private ImageView image;

	public mybaseadapater(Context context, ArrayList list) {
		// TODO Auto-generated constructor stub
		this.context = context;
		this.list = list;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return list.size();
	}

	@Override
	public Object getItem(int arg0) {
		// TODO Auto-generated method stub
		return list.get(arg0);
	}

	@Override
	public long getItemId(int arg0) {
		// TODO Auto-generated method stub
		return arg0;
	}

	@Override
	public View getView(int arg0, View arg1, ViewGroup arg2) {
		// TODO Auto-generated method stub
		inflate = View.inflate(context, R.layout.item, null);
		author = (TextView) inflate.findViewById(R.id.auther);
		body = (TextView) inflate.findViewById(R.id.writer);
		data = (TextView) inflate.findViewById(R.id.data);
		image = (ImageView) inflate.findViewById(R.id.image);
		author.setText(list.get(arg0).getAuthor());
		body.setText(list.get(arg0).getBody());
		data.setText(list.get(arg0).getPubDate());
		BitmapUtils map = new BitmapUtils(context);
		map.display(image, list.get(arg0).getPortrait());
		return inflate;
	}

}