Android 在线升级

1、获取当前安装版本

  //获取当前版本
public int getVersion(Context context){
        int version = 0;
        try {
            version = context.getPackageManager().getPackageInfo(
                    "项目包名", 0).versionCode;
        } catch (Exception e) {
            System.out.println("获取版本号出错");
        }
        return version;
    }
//获取当前版本名称
    public String getVersionName(Context context){
        String versionName = null;
        try {
            versionName = context.getPackageManager().getPackageInfo(
                    "项目包名", 0).versionName;
        } catch (Exception e) {
            System.out.println("获取版本名称出错");
        }
        return versionName;
    }

2、检测服务器发布版本，创建一个ver.aspx 页面

[{"appname":"appName","apkname":"UpdateApp.apk","versionName":"2.0","version":"2"}]

3、检测服务器发布版本

 public String getServerVersion(){
        String serverJson = null;
        byte[] buffer = new byte[128];
        try {
            URL serverURL = new URL(http_url+"/ver.aspx");
            HttpURLConnection connect = (HttpURLConnection) serverURL.openConnection();
            BufferedInputStream bis = new BufferedInputStream(connect.getInputStream());
            int n = 0;
            while((n = bis.read(buffer))!= -1){
                serverJson = new String(buffer);
            }
        } catch (Exception e) {
            System.out.println("获取服务器版本出错："+e);
        }

        return serverJson;
    }

4、版本对比

 public boolean compareVersion(Context context){

        final Context contextTemp = context;

        new Thread(){
            public void run() {
                Looper.prepare();
                String serverJson = manager.getServerVersion();

                //读取json
                try {
                    JSONArray array = new JSONArray(serverJson);
                    JSONObject object = array.getJSONObject(0);
                    String getServerVersion = object.getString("version");
                    String getServerVersionName = object.getString("versionName");

                    SettingPage.serverVersion = Integer.parseInt(getServerVersion);
                    SettingPage.serverVersionName = getServerVersionName;

                    if(SettingPage.version < SettingPage.serverVersion){
                       // AlertDialog.Builder builder  = new Builder(contextTemp);
                        AlertDialog.Builder builder = new AlertDialog.Builder(contextTemp,R.style.Dialog);//使用浅色背景 主题
                        builder.setTitle("版本更新" ) ;
                        builder.setMessage("本地版本号："+SettingPage.versionName
                                +"
"+"服务器版本号："+SettingPage.serverVersionName ) ;
                        builder.setPositiveButton("确认下载",new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int arg1) {
                                //下载apk
                                new Thread(){
                                    public void run() {
                                        Looper.prepare();
                                        downloadApkFile(contextTemp);
                                        Looper.loop();
                                    };
                                }.start();
                            }
                        });
                        builder.setNegativeButton("取消", null);
                        builder.show();
                    }else{
                        AlertDialog.Builder builder  = new Builder(contextTemp);
                        builder.setTitle("提示" ) ;
                        builder.setMessage("当前使用版本为最新版" ) ;
                        builder.setPositiveButton("确定",null);
                        builder.show();
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                    System.out.println("下载出错"+e);
                }

                Looper.loop();
            };

        }.start();
        return false;
    }

5、下载服务器版本

 public void downloadApkFile(Context context){
        String savePath = Environment.getExternalStorageDirectory()+"/UpdateApp.apk";
        String serverFilePath = http_url+"/UpdateApp.apk";//"/AndroidUpdateDemo.png";
        try {
            if(Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){
                URL serverURL = new URL(serverFilePath);
                HttpURLConnection connect = (HttpURLConnection) serverURL.openConnection();
                BufferedInputStream bis = new BufferedInputStream(connect.getInputStream());
                File apkfile = new File(savePath);
                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(apkfile));

                int fileLength = connect.getContentLength();
                int downLength = 0;
                int progress = 0;
                int n;
                byte[] buffer = new byte[1024];
                while((n=bis.read(buffer, 0, buffer.length))!=-1){
                    bos.write(buffer, 0, n);
                    downLength +=n;
                    progress = (int) (((float) downLength / fileLength) * 100);
                    Message msg = new Message();
                    msg.arg1 = progress;
                    SettingPage.handler.sendMessage(msg);

                }
                bis.close();
                bos.close();
                connect.disconnect();
            }
        } catch (Exception e) {
            System.out.println("下载出错"+e);
        }
    }

6、下载进度提醒

 public class receiveVersionHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            proBar.setProgress(msg.arg1);
             textView.setText("下载进度："+msg.arg1+"%"+"
"+"版本名称:"+versionName);
            if(msg.arg1 == 100){
                Intent intent = new Intent(Intent.ACTION_VIEW);
                String path = Environment.getExternalStorageDirectory()+"/UpdateApp.apk";
                intent.setDataAndType(Uri.fromFile(new File(path)),
                        "application/vnd.android.package-archive");
                startActivity(intent);
            }
            //proBar.setVisibility(R.id.button_id_1);
        }

    }

7、下载完成后手动安装即可

完整升级类代码

public class UpdateManager {
    private static UpdateManager manager = null;
    private static String http_url="http://127.0.0.1";
    private UpdateManager(){}
    public static UpdateManager getInstance(){
        manager = new UpdateManager();
        return manager;
    }
//获取当前版本号
    public int getVersion(Context context){
        int version = 0;
        try {
            version = context.getPackageManager().getPackageInfo(
                    "项目包名", 0).versionCode;
        } catch (Exception e) {
            System.out.println("获取版本号出错");
        }
        return version;
    }
//获取当前版本名称
    public String getVersionName(Context context){
        String versionName = null;
        try {
            versionName = context.getPackageManager().getPackageInfo(
                    "项目包名", 0).versionName;
        } catch (Exception e) {
            System.out.println("获取版本名称出错");
        }
        return versionName;
    }

    //获取服务器发布的版本
    public String getServerVersion(){
        String serverJson = null;
        byte[] buffer = new byte[128];
        try {
            URL serverURL = new URL(http_url+"/ver.aspx");
            HttpURLConnection connect = (HttpURLConnection) serverURL.openConnection();
            BufferedInputStream bis = new BufferedInputStream(connect.getInputStream());
            int n = 0;
            while((n = bis.read(buffer))!= -1){
                serverJson = new String(buffer);
            }
        } catch (Exception e) {
            System.out.println("获取服务器版本出错："+e);
        }

        return serverJson;
    }

    //版本比较
    public boolean compareVersion(Context context){

        final Context contextTemp = context;

        new Thread(){
            public void run() {
                Looper.prepare();
                String serverJson = manager.getServerVersion();

                //读取json
                try {
                    JSONArray array = new JSONArray(serverJson);
                    JSONObject object = array.getJSONObject(0);
                    String getServerVersion = object.getString("version");
                    String getServerVersionName = object.getString("versionName");

                    SettingPage.serverVersion = Integer.parseInt(getServerVersion);
                    SettingPage.serverVersionName = getServerVersionName;

                    if(SettingPage.version < SettingPage.serverVersion){
                       // AlertDialog.Builder builder  = new Builder(contextTemp);
                        AlertDialog.Builder builder = new AlertDialog.Builder(contextTemp,R.style.Dialog);//使用浅色背景 主题
                        builder.setTitle("版本更新" ) ;
                        builder.setMessage("本地版本号："+SettingPage.versionName
                                +"
"+"服务器版本号："+SettingPage.serverVersionName ) ;
                        builder.setPositiveButton("确认下载",new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int arg1) {
                                //下载apk
                                new Thread(){
                                    public void run() {
                                        Looper.prepare();
                                        downloadApkFile(contextTemp);
                                        Looper.loop();
                                    };
                                }.start();
                            }
                        });
                        builder.setNegativeButton("取消", null);
                        builder.show();
                    }else{
                        AlertDialog.Builder builder  = new Builder(contextTemp);
                        builder.setTitle("提示" ) ;
                        builder.setMessage("当前使用版本为最新版" ) ;
                        builder.setPositiveButton("确定",null);
                        builder.show();
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                    System.out.println("下载出错"+e);
                }

                Looper.loop();
            };

        }.start();
        return false;
    }

        //下载apk
    public void downloadApkFile(Context context){
        String savePath = Environment.getExternalStorageDirectory()+"/UpdateApp.apk";
        String serverFilePath = http_url+"/UpdateApp.apk";//"/AndroidUpdateDemo.png";
        try {
            if(Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){
                URL serverURL = new URL(serverFilePath);
                HttpURLConnection connect = (HttpURLConnection) serverURL.openConnection();
                BufferedInputStream bis = new BufferedInputStream(connect.getInputStream());
                File apkfile = new File(savePath);
                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(apkfile));

                int fileLength = connect.getContentLength();
                int downLength = 0;
                int progress = 0;
                int n;
                byte[] buffer = new byte[1024];
                while((n=bis.read(buffer, 0, buffer.length))!=-1){
                    bos.write(buffer, 0, n);
                    downLength +=n;
                    progress = (int) (((float) downLength / fileLength) * 100);
                    Message msg = new Message();
                    msg.arg1 = progress;
                    SettingPage.handler.sendMessage(msg);

                }
                bis.close();
                bos.close();
                connect.disconnect();
            }
        } catch (Exception e) {
            System.out.println("下载出错"+e);
        }
    }
}

同时可以参考下面博客，源码实现不同，实现效果大同小异

http://www.cnblogs.com/coolszy/archive/2012/04/27/2474279.html