HttpURLConnection Handler PULL解析数据 listView 版本更新
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1.MainActivity.class
</pre><pre name="code" class="java">
<span style="font-size:18px;">import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.util.ArrayList;import org.xmlpull.v1.XmlPullParser;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.util.Xml;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.GridView;import android.widget.ListView;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;import com.handmark.pulltorefresh.library.PullToRefreshListView;public class MainActivity extends Activity {private PullToRefreshListView listView;private Button button1;protected static final int SUCEESS = 0;ArrayList<Bean> blist = new ArrayList<Bean>();private MyBase myBase;//使用的是开源中国的apk private String apkUrl = "http://www.oschina.net/MobileAppVersion.xml"; Handler handler = new Handler() {public void handleMessage(android.os.Message msg) { if (msg.what == SUCEESS) {@SuppressWarnings("unchecked")ArrayList<Bean> startAnalyze = (ArrayList<Bean>) msg.obj;// 展示到listView上边 数据成功blist.addAll(startAnalyze);if (myBase == null) {myBase = new MyBase(MainActivity.this, blist);listView.setAdapter(myBase);} else {myBase.notifyDataSetChanged();}listView.onRefreshComplete();//停止刷新 }if(msg.what==1){String xml = (String) msg.obj; jiexiApkData(xml); } };};private Bean bean;private Update update;@SuppressWarnings({ "unchecked", "rawtypes" })@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button1 = (Button) findViewById(R.id.button1);listView = (PullToRefreshListView) findViewById(R.id.listView);listView.setMode(Mode.BOTH);getHttp();listView.setOnRefreshListener(new OnRefreshListener2() {@Overridepublic void onPullDownToRefresh(PullToRefreshBase refreshView) {// TODO Auto-generated method stubgetHttp(); }@Overridepublic void onPullUpToRefresh(PullToRefreshBase refreshView) {// TODO Auto-generated method stubgetHttp();}}); button1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//请求最新版本数据 reguestAPKData(); }});}private void getHttp() {// TODO Auto-generated method stubfinal String path = "http://www.oschina.net/action/api/news_list?catalog=1&pageIndex=0&pageSize=20";new Thread() {public void run() {try {// http://v.juhe.cn/weixin/query?key=您申请的KEY// 0917c812f187b92e025c9b7c2d4e59b5 pnoURL url = new URL(path);HttpURLConnection openConnection = (HttpURLConnection) url.openConnection();openConnection.setConnectTimeout(5000);openConnection.setReadTimeout(5000);int responseCode = openConnection.getResponseCode();if (responseCode == 200) {InputStream inputStream = openConnection.getInputStream();String parseSteam = StreamUtils.parseSteam(inputStream);ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(parseSteam.getBytes());ArrayList<Bean> startAnalyze = startAnalyze(arrayInputStream);//Gson gson = new Gson();//Bean bean = gson.fromJson(parseSteam, Bean.class);// 展示到listView上handler.obtainMessage(SUCEESS, startAnalyze).sendToTarget();}} catch (Exception e) {e.printStackTrace();}};}.start();}// PULL解析数据protected ArrayList<Bean> startAnalyze(InputStream inputStream) {ArrayList<Bean> twestList = new ArrayList<Bean>();try {XmlPullParser newPullParser = Xml.newPullParser();newPullParser.setInput(inputStream, "utf-8");int eventType = newPullParser.getEventType();while (eventType != XmlPullParser.END_DOCUMENT) {String name = newPullParser.getName();switch (eventType) {case XmlPullParser.START_TAG:if ("news".equals(name)) {bean = new Bean();} else if ("title".equals(name)) {bean.setTitle(newPullParser.nextText());} else if ("body".equals(name)) {bean.setBody(newPullParser.nextText());} else if ("author".equals(name)) {bean.setAuthor(newPullParser.nextText());} else if ("authorid".equals(name)) {bean.setAuthorid(newPullParser.nextText());} else if ("pubDate".equals(name)) {bean.setPubDate(newPullParser.nextText());}break;case XmlPullParser.END_TAG:if ("news".equals(name)) {twestList.add(bean);bean = null;}break;default:break;}eventType = newPullParser.next();}} catch (Exception e) {e.printStackTrace();}return twestList;}/** * 获得本应用的版本信息 */ private void panduanUpdate(){ try { PackageManager packageManager = this.getPackageManager(); PackageInfo packInfo = packageManager.getPackageInfo(this.getPackageName(), 0); String versionName = packInfo.versionName; if(!versionName.equals(update.getVersionName())){ initAlert(); } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } } /** * 提醒更新的对话框 */ private void initAlert(){ try { AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); builder.setTitle("软件版本更新"); builder.setMessage(update.getUpdateLog()); builder.setPositiveButton("立即更新", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //点击立即下载更新包 downLoadApk(); } }); builder.setNegativeButton("以后再说", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }); AlertDialog alertDialog = builder.create(); alertDialog.show(); } catch (Exception e) { e.printStackTrace(); } } /** * 从服务器中下载APK */ protected void downLoadApk() { final ProgressDialog pd; //进度条对话框 pd = new ProgressDialog(MainActivity.this); pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pd.setMessage("正在下载更新"); pd.show(); //进行下载操作 new Thread(){ @Override public void run() { try { //下载 File file = DownLoadManager.getFileFromServer(update.getDownloadUrl(), pd); sleep(3000); //安装 installApk(file); pd.dismiss(); //结束掉进度条对话框 } catch (Exception e) { } }}.start(); } /** * 安装apk */ protected void installApk(File file) { Intent intent = new Intent(); //执行动作 intent.setAction(Intent.ACTION_VIEW); //执行的数据类型 intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); startActivity(intent); } /** * 请求apk信息 */ private void reguestAPKData() { new Thread() { @Override public void run() { try { URL url = new URL(apkUrl); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5000); final ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream is = conn.getInputStream(); byte[] buffer = new byte[1024]; int len = -1; while ((len = is.read(buffer)) != -1) { baos.write(buffer, 0, len); } // Message message = handler.obtainMessage(); // message.obj = baos.toString(); //handler.obtainMessage(1, message); //不可以这样操作，会报错，这样相当于 //发了两次message handler.obtainMessage(1, baos.toString()).sendToTarget(); // String xml = baos.toString();// String xml = (String) msg.obj; // jiexiApkData(xml); } catch (IOException e) { e.printStackTrace(); } } }.start(); } /** * 解析apk * @param xml */ private void jiexiApkData(String xml){ try { XmlPullParser newPullParser = Xml.newPullParser(); ByteArrayInputStream bais = new ByteArrayInputStream(xml.getBytes()); newPullParser.setInput(bais, "utf-8"); int eventType = newPullParser.getEventType(); while (eventType != XmlPullParser.END_DOCUMENT) { String name = newPullParser.getName(); switch (eventType) { case XmlPullParser.START_TAG: if ("android".equals(name)) { update = new Update(); } else if ("versionCode".equals(name)) { update.setVersionCode(newPullParser.nextText()); } else if ("versionName".equals(name)) { update.setVersionName(newPullParser.nextText()); } else if ("downloadUrl".equals(name)) { update.setDownloadUrl(newPullParser.nextText()); } else if ("updateLog".equals(name)) { update.setUpdateLog(newPullParser.nextText()); } break; } eventType = newPullParser.next(); } } catch (Exception e) { e.printStackTrace(); } //判断更新 panduanUpdate(); } }</span>2.activity_main.xml
<span style="font-size:18px;"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="检测版本更新" /> <com.handmark.pulltorefresh.library.PullToRefreshListView android:id="@+id/listView" android:layout_width="fill_parent" android:layout_height="fill_parent" > </com.handmark.pulltorefresh.library.PullToRefreshListView></LinearLayout></span>
3.list.xml
<span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/tv_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" /> <TextView android:id="@+id/tv_nr" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" /></LinearLayout></span>
4.Bean
<span style="font-size:18px;">public class Bean {private String id;private String title;private String body;private String author;private String pubDate;private String authorid;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getBody() {return body;}public void setBody(String body) {this.body = body;}public String getAuthor() {return author;}public void setAuthor(String author) {this.author = author;}public String getPubDate() {return pubDate;}public void setPubDate(String pubDate) {this.pubDate = pubDate;}public String getAuthorid() {return authorid;}public void setAuthorid(String authorid) {this.authorid = authorid;}public Bean(String id, String title, String body, String author,String pubDate, String authorid) {super();this.id = id;this.title = title;this.body = body;this.author = author;this.pubDate = pubDate;this.authorid = authorid;}public Bean() {super();// TODO Auto-generated constructor stub}}</span>5.DownLoadManager
<span style="font-size:18px;">import java.io.BufferedInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import android.app.ProgressDialog;import android.os.Environment;/** * 娑撳娴嘺pk閹碉拷閻劎娈戠猾锟� * Created by Administrator on 2016/7/1. */public class DownLoadManager { public static File getFileFromServer(String path, ProgressDialog pd) throws Exception{ //婵″倹鐏夐惄鍝ョ搼閻ㄥ嫯鐦界悰銊с仛瑜版挸澧犻惃鍓哾card閹稿倽娴囬崷銊﹀閺堣桨绗傞獮鏈电瑬閺勵垰褰查悽銊ф畱 if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5000); //閼惧嘲褰囬崚鐗堟瀮娴犲墎娈戞径褍鐨� pd.setMax(conn.getContentLength()); InputStream is = conn.getInputStream(); File file = new File(Environment.getExternalStorageDirectory(), "updata.apk"); FileOutputStream fos = new FileOutputStream(file); BufferedInputStream bis = new BufferedInputStream(is); byte[] buffer = new byte[1024]; int len ; int total=0; while((len =bis.read(buffer))!=-1){ fos.write(buffer, 0, len); total+= len; //閼惧嘲褰囪ぐ鎾冲娑撳娴囬柌锟� pd.setProgress(total); } fos.close(); bis.close(); is.close(); return file; } else{ return null; } }}</span>6.MyBase
<span style="font-size:18px;">import java.util.ArrayList;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;public class MyBase extends BaseAdapter {private Context context;private ArrayList<Bean> list;public MyBase(Context context,ArrayList<Bean> list) {// TODO Auto-generated constructor stubthis.context=context;this.list=list;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn list.size();}@Overridepublic Object getItem(int arg0) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int arg0) {// TODO Auto-generated method stubreturn 0;}@Overridepublic View getView(int arg0, View convertView, ViewGroup arg2) {// TODO Auto-generated method stubViewHolder holder=null;if(convertView==null){convertView = View.inflate(context, R.layout.list, null);holder=new ViewHolder();holder.tv_name = (TextView) convertView.findViewById(R.id.tv_name);holder.tv_nr = (TextView) convertView.findViewById(R.id.tv_nr);convertView.setTag(holder);}else{holder=(ViewHolder) convertView.getTag();}holder.tv_name.setText(list.get(arg0).getTitle());holder.tv_nr.setText(list.get(arg0).getAuthor()+" "+list.get(arg0).getPubDate());return convertView;}class ViewHolder{TextView tv_name,tv_nr;}}</span>7.StreamUtils工具类
<span style="font-size:18px;">import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; public class StreamUtils { public static String parseSteam(InputStream inputStream) { try { // 定义一个字节数组输出流 ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(); // 定义一个字节数组 byte[] buffer = new byte[1024]; // 定义初始长度 int len = 0; while ((len = inputStream.read(buffer)) != -1) { // 将读的内容，写到字节数组输出流中 arrayOutputStream.write(buffer, 0, len); } // 将字节输出流转成字符串 return arrayOutputStream.toString("utf-8"); // utf-8 大小写都可以，gbk 必须大写 } catch (IOException e) { e.printStackTrace(); } return null; } } </span>8.b版本更新的Bean Update
<span style="font-size:18px;">/** * * Created by Administrator on 2016/7/1. */ public class Update { private String versionCode; private String versionName; private String downloadUrl; private String updateLog; public String getVersionCode() { return versionCode; } public void setVersionCode(String versionCode) { this.versionCode = versionCode; } public String getVersionName() { return versionName; } public void setVersionName(String versionName) { this.versionName = versionName; } public String getDownloadUrl() { return downloadUrl; } public void setDownloadUrl(String downloadUrl) { this.downloadUrl = downloadUrl; } public String getUpdateLog() { return updateLog; } public void setUpdateLog(String updateLog) { this.updateLog = updateLog; } } </span> 0 0
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