发一个完善版本的 思路还是原来的思路，上一篇文章：http://fengzhizi715.iteye.com/blog/792774
不过结合了线程和ProgressBar
代码如下:
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningAppProcessInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.decarta.db.MapVersionTable;
/**
* @author Tony Shen
*
*/
public class Main extends Activity {
private MapVersionTable mDB;
private String mapVersion;
private String apkUrl;
private List<RunningAppProcessInfo> process;
private ActivityManager activityMan;
private ProgressBar progressBar;
private final int CHECK_NEW_VERSION = 1;
private final int DOWNLOAD = 2;
private final int INSTALL = 3;
private final int CHECK_APP = 4;
private final int INVOKE_APP = 5;
private final int DOWNLOAD_AGAIN = 6;
private final int INSTALL_AGAIN = 7;
private boolean newVersionFlag = false;
private boolean checkAppFlag = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDB = new MapVersionTable(this);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setIndeterminate(false);
progressBar.setVisibility(View.VISIBLE);
progressBar.setMax(100);
progressBar.setProgress(0);
checkAppFlag = checkApp();
new Thread(new Runnable() {
Message msg = new Message();
public void run() {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
msg.what = CHECK_NEW_VERSION;
mHandler.sendMessage(msg);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
if (newVersionFlag) {
msg.what = DOWNLOAD;
mHandler.sendMessage(msg);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
msg.what = INSTALL;
mHandler.sendMessage(msg);
} else {
msg.what = CHECK_APP;
mHandler.sendMessage(msg);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
if (checkAppFlag) {
msg.what = INVOKE_APP;
mHandler.sendMessage(msg);
} else {
msg.what = DOWNLOAD_AGAIN;
mHandler.sendMessage(msg);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
msg.what = INSTALL_AGAIN;
mHandler.sendMessage(msg);
}
}
}
}).start();
}
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch(msg.what){
case CHECK_NEW_VERSION:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "检查更新", Toast.LENGTH_SHORT).show();
newVersionFlag = checkNewVersion();
progressBar.setProgress(30);
}
break;
case DOWNLOAD:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "下载更新", Toast.LENGTH_SHORT).show();
downloadAPK(apkUrl);
progressBar.setProgress(60);
}
break;
case INSTALL:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "安装更新", Toast.LENGTH_SHORT).show();
killProcess();
progressBar.setProgress(100);
installAPK();
finish();
}
break;
case CHECK_APP:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "检查应用", Toast.LENGTH_SHORT).show();
// checkAppFlag = checkApp();
progressBar.setProgress(60);
}
break;
case INVOKE_APP:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "程序启动", Toast.LENGTH_SHORT).show();
progressBar.setProgress(100);
invokeAPK();
finish();
}
break;
case DOWNLOAD_AGAIN:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "下载更新", Toast.LENGTH_SHORT).show();
progressBar.setProgress(80);
downloadAPK(apkUrl);
}
break;
case INSTALL_AGAIN:
if(!Thread.currentThread().isInterrupted()){//当前线程正在运行
Toast.makeText(Main.this, "安装更新", Toast.LENGTH_SHORT).show();
progressBar.setProgress(100);
installAPK();
finish();
}
break;
default:
progressBar.setVisibility(View.GONE);
Thread.currentThread().interrupt();//中断当前线程.
break;
}
super.handleMessage(msg);
}
};
private boolean checkNewVersion() {
try {
URL url=new URL(AppConfig.SERVLET_URL);
SAXParserFactory factory=SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(false);
SAXParser parser=factory.newSAXParser();
InputStream is = url.openStream();
parser.parse(is, new DefaultHandler(){
private String cur="";
private int step;
@Override
public void startDocument() throws SAXException {
step = 0;
}
@Override
public void startElement(String uri, String localName,
String qName, Attributes attributes)
throws SAXException {
cur = localName;
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
String str = new String(ch, start, length).trim();
if (str == null || str.equals(""))
return;
if (cur.equals("url")) {
apkUrl = str;
}
if (cur.equals("map_version")) {
mapVersion = str;
}
}
@Override
public void endElement(String uri, String localName,
String qName) throws SAXException {
step = step + 1;
}
@Override
public void endDocument() throws SAXException {
super.endDocument();
}
});
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if (diffVersion(mapVersion))
return true;
else
return false;
}
private boolean diffVersion(String mapVersion) {
String lastVersion = mDB.getLastMapVersion();
if (lastVersion == null) {
mDB.setMapVersion(mapVersion);
return true;
}
if (!lastVersion.equals(mapVersion)) {
mDB.setMapVersion(mapVersion);
return true;
}
else
return false;
}
private void downloadAPK(String apkUrl) {
String filePath = "//sdcard//download//" + AppConfig.APKNAME;
URL url = null;
try {
url = new URL(apkUrl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
InputStream in = con.getInputStream();
File fileOut = new File(filePath);
FileOutputStream out = new FileOutputStream(fileOut);
byte[] bytes = new byte[1024];
int c;
while ((c = in.read(bytes)) != -1) {
out.write(bytes, 0, c);
}
in.close();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void killProcess() {
activityMan = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
process = activityMan.getRunningAppProcesses();
int len = process.size();
for(int i = 0;i<len;i++) {
if (process.get(i).processName.equals(AppConfig.PKG)) {
android.os.Process.killProcess(process.get(i).pid);
}
}
}
private void installAPK() {
String fileName = getSDPath() +"/download/"+AppConfig.APKNAME;
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");
startActivity(intent);
}
private void invokeAPK() {
Intent i=new Intent();
i.setComponent(new ComponentName(AppConfig.PKG, AppConfig.CLS));
startActivity(i);
}
private boolean checkApp() {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setClassName("com.android.settings",
"com.android.settings.InstalledAppDetails");
intent.putExtra("com.android.settings.ApplicationPkgName",
AppConfig.APKNAME);
List<ResolveInfo> acts = getPackageManager().queryIntentActivities(
intent, 0);
if (acts.size() > 0)
return true;
else
return false;
}
private String getSDPath() {
File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED); // determine whether sd card is exist
if (sdCardExist) {
sdDir = Environment.getExternalStorageDirectory();// get the root directory
}
return sdDir.toString();
}
@Override
public void finish() {
super.finish();
Thread.currentThread().interrupt();//中断当前线程.
}
@Override
protected void onDestroy() {
super.onDestroy();
try {
mDB.close(); // be sure to close
} catch (Exception e) {
}
}
}
