package com.tools.update;
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 org.xmlpull.v1.XmlPullParser;
import android.app.ProgressDialog;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Environment;
import android.util.Xml;
public class DownLoadManager
{
public static File getFileFromServer(String path, ProgressDialog pd) throws Exception
{
//如果相等的话表示当前的sdcard挂载在手机上并且是可用的
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
//获取到文件的大小
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;
//获取当前下载量
pd.setProgress(total);
}
fos.close();
bis.close();
is.close();
return file;
}
else{
return null;
}
}
}
UpdataInfo.java
package com.tools.update;
public class UpdataInfo
{
private String version;
private String url;
private String description;
public String getVersion()
{
return version;
}
public void setVersion(String version)
{
this.version = version;
}
public String getUrl()
{
return url;
}
public void setUrl(String url)
{
this.url = url;
}
public String getDescription()
{
return description;
}
public void setDescription(String description)
{
this.description = description;
}
}
UpdataInfoParser.java
package com.tools.update;
import java.io.InputStream;
import org.xmlpull.v1.XmlPullParser;
import android.util.Xml;
public class UpdataInfoParser
{
public static UpdataInfo getUpdataInfo(InputStream is) throws Exception{
XmlPullParser parser = Xml.newPullParser();
parser.setInput(is, "utf-8");//设置解析的数据源
int type = parser.getEventType();
UpdataInfo info = new UpdataInfo();//实体
while(type != XmlPullParser.END_DOCUMENT )
{
switch (type)
{
case XmlPullParser.START_TAG:
if("version".equals(parser.getName()))
{
info.setVersion(parser.nextText()); //获取版本号
}else if ("url".equals(parser.getName()))
{
info.setUrl(parser.nextText()); //获取要升级的APK文件
}else if ("description".equals(parser.getName()))
{
info.setDescription(parser.nextText()); //获取该文件的信息
}
break;
}
type = parser.next();
}
return info;
}
}
update.java
package com.tools.update;
import java.io.File;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import com.tools.update.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
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.os.Message;
import android.util.Log;
import android.widget.Toast;
public class update extends Activity {
private UpdataInfo info = new UpdataInfo();
private final String TAG = "updataActivity";
private final int UPDATA_CLIENT = 1;
private final int GET_UNDATAINFO_ERROR = 2;
private final int DOWN_ERROR = 3;
private String versionname;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
versionname = getVersionName();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
CheckVersionTask CheckVersionTask_test = new CheckVersionTask();
CheckVersionTask_test.run();
}
private String getVersionName() throws Exception{
//获取packagemanager的实例
PackageManager packageManager = getPackageManager();
//getPackageName()是你当前类的包名，0代表是获取版本信息
PackageInfo packInfo = packageManager.getPackageInfo(getPackageName(), 0);
return packInfo.versionName;
}
public class CheckVersionTask implements Runnable
{
public void run()
{
try
{
Log.i(TAG,"CheckVersionTask!!!!!!!!!!!!");
//从资源文件获取服务器 地址
String path = getResources().getString(R.string.serverurl);
//包装成url的对象
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5000);
InputStream is =conn.getInputStream();
info = UpdataInfoParser.getUpdataInfo(is);
if(info.getVersion().equals(versionname))
{
Log.i(TAG,"版本号相同无需升级");
LoginMain();
}
else
{
Log.i(TAG,"版本号不同 ,提示用户升级 ");
Message msg = new Message();
msg.what = UPDATA_CLIENT;
handler.sendMessage(msg);
}
}
catch (Exception e)
{
// 待处理
Message msg = new Message();
msg.what = GET_UNDATAINFO_ERROR;
handler.sendMessage(msg);
e.printStackTrace();
}
}
}
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg)
{
// TODO Auto-generated method stub
super.handleMessage(msg);
switch (msg.what)
{
case UPDATA_CLIENT:
//对话框通知用户升级程序
showUpdataDialog();
break;
case GET_UNDATAINFO_ERROR:
//服务器超时
Toast.makeText(getApplicationContext(), "获取服务器更新信息失败", 1).show();
LoginMain();
break;
case DOWN_ERROR:
//下载apk失败
Toast.makeText(getApplicationContext(), "下载新版本失败", 1).show();
LoginMain();
break;
}
}
};
protected void showUpdataDialog()
{
AlertDialog.Builder builer = new Builder(this) ;
builer.setTitle("版本升级");
builer.setMessage(info.getDescription());
//当点确定按钮时从服务器上下载 新的apk 然后安装
builer.setPositiveButton("确定", new OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
Log.i(TAG,"下载apk,更新");
downLoadApk();
}
});
//当点取消按钮时进行登录
builer.setNegativeButton("取消", new OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
// TODO Auto-generated method stub
LoginMain();
}
});
AlertDialog dialog = builer.create();
dialog.show();
}
protected void downLoadApk() {
final ProgressDialog pd; //进度条对话框
pd = new ProgressDialog(this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage("正在下载更新");
pd.show();
new Thread(){
@Override
public void run() {
try {
File file = DownLoadManager.getFileFromServer(info.getUrl(), pd);
sleep(3000);
installApk(file);
pd.dismiss(); //结束掉进度条对话框
} catch (Exception e) {
Message msg = new Message();
msg.what = DOWN_ERROR;
handler.sendMessage(msg);
e.printStackTrace();
}
}}.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);
}
private void LoginMain(){
// Intent intent = new Intent(this,MainActivity.class);
// startActivity(intent);
//结束掉当前的activity
this.finish();
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
</LinearLayout>
string.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, updata!</string>
<string name="app_name">Updata_samples</string>
<string name="serverurl">http://172.16.129.122:9000/update.xml</string>
<!-- string name="serverurl">http://192.168.1.187:8080/</string-->
</resources>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tools.update"
android:versionCode="1"
android:versionName="1.0.0" >
<uses-sdk android:minSdkVersion="8" />
<!-- permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER"/-->
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name="com.tools.update.update"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
update.xml
该文件是放在服务器上，该文件维护最新版本信息，及最新文件的地址
<?xml version="1.0" encoding="utf-8"?>
<info>
<version>2.0</version>
<url>http://172.16.129.122:9000/updata_samples.apk</url>
<description>检测到最新版本，请及时更新！</description>
</info>
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