完善升级

发一个完善版本的 思路还是原来的思路，上一篇文章：http://fengzhizi715.javaeye.com/blog/792774 
不过结合了线程和ProgressBar 

代码如下: 

 http://fengzhizi715.javaeye.com/blog/797782

 

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) {
        }
    }
}