[置顶] HttpURLConnection Handler PULL解析数据 listView 版本更新

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" })
@Override
protected 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() {

@Override
public void onPullDownToRefresh(PullToRefreshBase refreshView) {
// TODO Auto-generated method stub
getHttp();

}

@Override
public void onPullUpToRefresh(PullToRefreshBase refreshView) {
// TODO Auto-generated method stub
getHttp();
}
});
button1.setOnClickListener(new OnClickListener() {

@Override
public 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 stub
final 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 pno
URL 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 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 null;
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(int arg0, View convertView, ViewGroup arg2) {
// TODO Auto-generated method stub
ViewHolder 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>