Android App自动更新之通知栏下载
本文实例为大家分享了AndroidApp自动更新通知栏下载的具体代码，供大家参考，具体内容如下
版本更新说明
这里有调用UpdateService启动服务检查下载安装包等
1.文件下载，下完后写入到sdcard
2.如何在通知栏上显示下载进度
3.下载完毕自动安装
4.如何判断是否有新版本
版本更新的主类
packagecom.wei.update;
importjava.io.IOException;
importjava.io.InputStream;
importjava.net.URL;
importjava.util.HashMap;
importjavax.xml.parsers.DocumentBuilder;
importjavax.xml.parsers.DocumentBuilderFactory;
importorg.json.JSONException;
importorg.json.JSONObject;
importorg.w3c.dom.Document;
importorg.w3c.dom.Element;
importorg.w3c.dom.Node;
importorg.w3c.dom.NodeList;
importorg.xmlpull.v1.XmlPullParser;
importorg.xmlpull.v1.XmlPullParserException;
importorg.xmlpull.v1.XmlPullParserFactory;
importcom.wei.util.MyApplication;
importandroid.app.AlertDialog;
importandroid.content.Context;
importandroid.content.DialogInterface;
importandroid.content.Intent;
importandroid.content.pm.PackageManager.NameNotFoundException;
importandroid.os.Handler;
/**
*版本更新主类,这里有调用UpdateService启动服务检查下载安装包等1.文件下载，下完后写入到sdcard2.如何在通知栏上显示下载进度
*3.下载完毕自动安装4.如何判断是否有新版本
*
*@authordavid
*/
publicclassUpdateManager{
privatestaticStringpackageName;//="com.yipinzhe";//应用的包名
privatestaticStringjsonUrl="version.txt";//JSON版本文件URL
privatestaticStringxmlUrl="version.xml";//XML版本文件URL
privatestaticfinalStringDOWNLOAD_DIR="/";//应用下载后保存的子目录
privateContextmContext;
HashMapmHashMap;//保存解析的XML信息
intversionCode,isNew;
publicUpdateManager(Contextcontext){
this.mContext=context;
packageName=context.getPackageName();
jsonUrl=MyApplication.site+jsonUrl;
xmlUrl=MyApplication.site+xmlUrl;
checkVersion();
}
HandlercheckHandler=newHandler(){
@Override
publicvoidhandleMessage(android.os.Messagemsg){
if(msg.what==1){
//发现新版本，提示用户更新
StringBuffermessage=newStringBuffer();
message.append(mHashMap.get("note").replace("|","\n"));
AlertDialog.Builderalert=newAlertDialog.Builder(mContext);
alert.setTitle("软件升级")
.setMessage(message.toString())
.setPositiveButton("更新",
newDialogInterface.OnClickListener(){
@Override
publicvoidonClick(DialogInterfacedialog,
intwhich){
//开启更新服务UpdateService
System.out.println("你点击了更新");
IntentupdateIntent=newIntent(
mContext,UpdateService.class);
/**
*updateIntent.putExtra("downloadDir",
*DOWNLOAD_DIR);
*updateIntent.putExtra("apkUrl",
*mHashMap.get("url"));
*/
mContext.startService(updateIntent);
}
})
.setNegativeButton("取消",
newDialogInterface.OnClickListener(){
@Override
publicvoidonClick(DialogInterfacedialog,
intwhich){
dialog.dismiss();
}
});
alert.create().show();
}
};
};
/**
*检查是否有新版本
*/
publicvoidcheckVersion(){
try{
//获取软件版本号,对应AndroidManifest.xml下android:versionCode
versionCode=mContext.getPackageManager().getPackageInfo(
packageName,0).versionCode;
}catch(NameNotFoundExceptione){
e.printStackTrace();
}
newThread(){
@Override
publicvoidrun(){
Stringresult=null;
/**
*try{//如果服务器端是JSON文本文件result=
*MyApplication.handleGet(jsonUrl);if(result!=null){
*mHashMap=parseJSON(result);}}catch(Exceptione1){
*e1.printStackTrace();}
*/
InputStreaminStream=null;
try{
//本机XML文件
inStream=UpdateManager.class.getClassLoader().getResourceAsStream("version.xml");
//如果服务器端是XML文件
inStream=newURL(xmlUrl).openConnection().getInputStream();
if(inStream!=null)
mHashMap=parseXml(inStream);
}catch(Exceptione1){
e1.printStackTrace();
}
if(mHashMap!=null){
intserviceCode=Integer.valueOf(mHashMap.get("version"));
if(serviceCode>versionCode){//版本判断,返回true则有新版本
isNew=1;
}
}
checkHandler.sendEmptyMessage(isNew);
};
}.start();
}
/**
*解析服务器端的JSON版本文件
*/
publicHashMapparseJSON(Stringstr){
HashMaphashMap=newHashMap();
try{
JSONObjectobj=newJSONObject(str);
hashMap.put("version",obj.getString("version"));
hashMap.put("name",obj.getString("name"));
hashMap.put("url",obj.getString("url"));
hashMap.put("note",obj.getString("note"));
}catch(JSONExceptione){
e.printStackTrace();
}
returnhashMap;
}
/**
*解析服务器端的XML版本文件
*/
publicHashMapparseXml(InputStreaminputStream){
HashMaphashMap=newHashMap();
try{
XmlPullParserparser=XmlPullParserFactory.newInstance().newPullParser();
parser.setInput(inputStream,"GBK");//设置数据源编码
inteventCode=parser.getEventType();//获取事件类型
while(eventCode!=XmlPullParser.END_DOCUMENT){
System.out.println("循环开始");
switch(eventCode){
caseXmlPullParser.START_DOCUMENT://开始读取XML文档
System.out.println("START_DOCUMENT");
break;
caseXmlPullParser.START_TAG://开始读取某个标签
if("version".equals(parser.getName())){
hashMap.put(parser.getName(),parser.nextText());
}elseif("name".equals(parser.getName())){
hashMap.put(parser.getName(),parser.nextText());
}elseif("url".equals(parser.getName())){
hashMap.put(parser.getName(),parser.nextText());
}elseif("note".equals(parser.getName())){
hashMap.put(parser.getName(),parser.nextText());
}
break;
caseXmlPullParser.END_TAG:
break;
}
eventCode=parser.next();//继续读取下一个元素节点，并获取事件码
}
System.out.println(hashMap.get("version"));
}catch(Exceptione){
}
returnhashMap;
/**
*try{
DocumentBuilderFactoryfactory=DocumentBuilderFactory.newInstance();
DocumentBuilderbuilder=factory.newDocumentBuilder();
Documentdocument=builder.parse(inStream);
Elementroot=document.getDocumentElement();//获取根节点
NodeListchildNodes=root.getChildNodes();//获得所有子节点,然后遍历
for(intj=0;j
版本更新的服务类
packagecom.wei.update;
importjava.io.File;
importjava.io.FileOutputStream;
importjava.io.IOException;
importjava.io.InputStream;
importjava.net.HttpURLConnection;
importjava.net.URL;
importcom.wei.util.MyApplication;
importcom.wei.wotao.R;
//importandroid.annotation.SuppressLint;
importandroid.app.Notification;
importandroid.app.NotificationManager;
importandroid.app.PendingIntent;
importandroid.app.Service;
importandroid.content.Intent;
importandroid.net.Uri;
importandroid.os.Environment;
importandroid.os.Handler;
importandroid.os.IBinder;
importandroid.os.Message;
importandroid.view.View;
importandroid.widget.RemoteViews;
/**
*下载安装包的服务类
*@authordavid
*/
publicclassUpdateServiceextendsService{
//文件存储
privateFilesaveDir;
privateFilesaveFile;
privateStringapkUrl;
//通知栏
privateNotificationManagerupdateNotificationManager=null;
privateNotificationupdateNotification=null;
//通知栏跳转Intent
privateIntentupdateIntent=null;
privatePendingIntentupdatePendingIntent=null;
//下载状态
privatefinalstaticintDOWNLOAD_COMPLETE=0;
privatefinalstaticintDOWNLOAD_FAIL=1;
privateRemoteViewscontentView;
@Override
publicintonStartCommand(Intentintent,intflags,intstartId){
System.out.println("onStartCommand");
contentView=newRemoteViews(getPackageName(),R.layout.activity_app_update);
//获取传值
StringdownloadDir=intent.getStringExtra("downloadDir");
apkUrl=MyApplication.site+intent.getStringExtra("apkUrl");
//如果有SD卡,则创建APK文件
if(android.os.Environment.MEDIA_MOUNTED.equals(android.os.Environment
.getExternalStorageState())){
saveDir=newFile(Environment.getExternalStorageDirectory(),
downloadDir);
saveFile=newFile(saveDir.getPath(),getResources()
.getString(R.string.app_name)+".apk");
}
this.updateNotificationManager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
this.updateNotification=newNotification();
//设置下载过程中，点击通知栏，回到主界面
updateIntent=newIntent();
updatePendingIntent=PendingIntent.getActivity(this,0,updateIntent,0);
//设置通知栏显示内容
updateNotification.icon=R.drawable.icon_info;
updateNotification.tickerText="开始下载";
updateNotification.contentView.setProgressBar(R.id.progressBar1,100,0,true);
updateNotification.setLatestEventInfo(this,
getResources().getString(R.string.app_name),"0%",
updatePendingIntent);
//发出通知
updateNotificationManager.notify(0,updateNotification);
newThread(newDownloadThread()).start();
returnsuper.onStartCommand(intent,flags,startId);
}
@Override
publicIBinderonBind(Intentintent){
returnnull;
}
/**
*下载的线程
*/
privateclassDownloadThreadimplementsRunnable{
Messagemessage=updateHandler.obtainMessage();
publicvoidrun(){
message.what=DOWNLOAD_COMPLETE;
if(saveDir!=null&&!saveDir.exists()){
saveDir.mkdirs();
}
if(saveFile!=null&&!saveFile.exists()){
try{
saveFile.createNewFile();
}catch(IOExceptione){
e.printStackTrace();
}
}
try{
longdownloadSize=downloadFile(apkUrl,saveFile);
if(downloadSize>0){//下载成功
updateHandler.sendMessage(message);
}
}catch(Exceptionex){
ex.printStackTrace();
message.what=DOWNLOAD_FAIL;
updateHandler.sendMessage(message);//下载失败
}
}
publiclongdownloadFile(StringdownloadUrl,FilesaveFile)
throwsException{
intdownloadCount=0;
intcurrentSize=0;
longtotalSize=0;
intupdateTotalSize=0;
intrate=0;//下载完成比例
HttpURLConnectionhttpConnection=null;
InputStreamis=null;
FileOutputStreamfos=null;
try{
URLurl=newURL(downloadUrl);
httpConnection=(HttpURLConnection)url.openConnection();
httpConnection.setRequestProperty("User-Agent",
"PacificHttpClient");
if(currentSize>0){
httpConnection.setRequestProperty("RANGE","bytes="
+currentSize+"-");
}
httpConnection.setConnectTimeout(200000);
httpConnection.setReadTimeout(200000);
updateTotalSize=httpConnection.getContentLength();//获取文件大小
if(httpConnection.getResponseCode()==404){
thrownewException("fail!");
}
is=httpConnection.getInputStream();
fos=newFileOutputStream(saveFile,false);
bytebuffer[]=newbyte[1024*1024*3];
intreadsize=0;
while((readsize=is.read(buffer))!=-1){
fos.write(buffer,0,readsize);
totalSize+=readsize;//已经下载的字节数
rate=(int)(totalSize*100/updateTotalSize);//当前下载进度
//为了防止频繁的通知导致应用吃紧，百分比增加10才通知一次
if((downloadCount==0)||rate-0>downloadCount){
downloadCount+=1;
updateNotification.setLatestEventInfo(
UpdateService.this,"正在下载",rate+"%",
updatePendingIntent);//设置通知的内容、标题等
updateNotification.contentView.setProgressBar(R.id.progressBar1,100,rate,true);
updateNotificationManager.notify(0,updateNotification);//把通知发布出去
}
}
}finally{
if(httpConnection!=null){
httpConnection.disconnect();
}
if(is!=null){
is.close();
}
if(fos!=null){
fos.close();
}
}
returntotalSize;
}
}
privateHandlerupdateHandler=newHandler(){
@Override
publicvoidhandleMessage(Messagemsg){
switch(msg.what){
caseDOWNLOAD_COMPLETE:
//当下载完毕，自动安装APK(ps,打电话发短信的启动界面工作)
Uriuri=Uri.fromFile(saveFile);//根据File获得安装包的资源定位符
IntentinstallIntent=newIntent(Intent.ACTION_VIEW);//设置Action
installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//新的Activity会在一个新任务打开，而不是在原先的任务栈
installIntent.setDataAndType(uri,"application/vnd.android.package-archive");//设置URI的数据类型
startActivity(installIntent);//把打包的Intent传递给startActivity
//当下载完毕，更新通知栏，且当点击通知栏时，安装APK
updatePendingIntent=PendingIntent.getActivity(UpdateService.this,0,installIntent,0);
updateNotification.defaults=Notification.DEFAULT_SOUND;//铃声提醒
updateNotification.setLatestEventInfo(UpdateService.this,getResources().getString(R.string.app_name),
"下载完成,点击安装",updatePendingIntent);
updateNotificationManager.notify(0,updateNotification);
//停止服务
stopService(updateIntent);
break;
caseDOWNLOAD_FAIL:
//下载失败
updateNotification.setLatestEventInfo(UpdateService.this,
getResources().getString(R.string.app_name),
"下载失败,网络连接超时",updatePendingIntent);
updateNotificationManager.notify(0,updateNotification);
break;
default:
stopService(updateIntent);
break;
}
}
};
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。