Android软件更新

Android软件更新

//得到当前版本编码和版本名称、

public static int getVerCode(Context context) {
        int verCode = -1;
        try {
            verCode = context.getPackageManager().getPackageInfo("com.example", 0).versionCode;
        } catch (NameNotFoundException e) {
            Log.e(TAG, e.getMessage());
        }
        return verCode;
    }
    public static String getVerName(Context context) {
        String verName = "";
        try {
            verName = context.getPackageManager().getPackageInfo("com.example", 0).versionName;
        } catch (NameNotFoundException e) {
            Log.e(TAG, e.getMessage());
        }
        return verName;    
    }
    public static String getAppName(Context context) {
        String verName = context.getResources().getText(R.string.app_name).toString();
        return verName;
    }

// 获取更新版本内容

public static String getContent(String url) throws Exception{
        StringBuilder sb = new StringBuilder();
        HttpClient client = new DefaultHttpClient();
        HttpParams httpParams = client.getParams();
        //设置网络超时参数
        HttpConnectionParams.setConnectionTimeout(httpParams, 3000);
        HttpConnectionParams.setSoTimeout(httpParams, 5000);
        HttpResponse response = client.execute(new HttpGet(url));
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8"), 8192);
            String line = null;
            while ((line = reader.readLine())!= null){
                sb.append(line + "
");
            }
            reader.close();
        }
        return sb.toString();
    }

// 判断是否得到了服务器传来的版本号

private boolean getServerVerCode() {
        try {
            String verjson = NetworkTool.getContent(Config.UPDATE_SERVER + Config.UPDATE_VERJSON);
            JSONArray array = new JSONArray(verjson);
            if (array.length() > 0) {
                JSONObject obj = array.getJSONObject(0);
                try {
                    newVerCode = Integer.parseInt(obj.getString("verCode"));
                    newVerName = obj.getString("verName");
                } catch (Exception e) {
                    newVerCode = -1;
                    newVerName = "";
                    return false;
                }
            }
        } catch (Exception e) {
            Log.e(TAG, e.getMessage());
            return false;
        }
        return true;
    }

// 如果版本号得到了就更新，否则不更新

if (getServerVerCode()) {
            int vercode = Config.getVerCode(this);
            if (newVerCode > vercode) {
                doNewVersionUpdate();
            } else {
                notNewVersionShow();
            }
        }

// 更新软件的代码

private void doNewVersionUpdate() {
        int verCode = Config.getVerCode(this);
        String verName = Config.getVerName(this);
        StringBuffer sb = new StringBuffer();
        sb.append("当前版本:");
        sb.append(verName);
        sb.append(" Code:");
        sb.append(verCode);
        sb.append(", 发现新版本:");
        sb.append(newVerName);
        sb.append(" Code:");
        sb.append(newVerCode);
        sb.append(", 是否更新?");
        Dialog dialog = new AlertDialog.Builder(UpdateActivity.this)
                .setTitle("软件更新")
                .setMessage(sb.toString())
                // 设置内容
                .setPositiveButton("更新",// 设置确定按钮
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                pBar = new ProgressDialog(UpdateActivity.this);
                                pBar.setTitle("正在下载");
                                pBar.setMessage("请稍候...");
                                pBar.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                                downFile(Config.UPDATE_SERVER + Config.UPDATE_APKNAME);
                            }
                        })
                .setNegativeButton("暂不更新",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,int whichButton) {
                                // 点击"取消"按钮之后退出程序
                                finish();
                            }
                        }).create();// 创建
        // 显示对话框
        dialog.show();
    }

    void downFile(final String url) {
        pBar.show();
        new Thread() {
            public void run() {
                HttpClient client = new DefaultHttpClient();
                HttpGet get = new HttpGet(url);
                HttpResponse response;
                try {
                    response = client.execute(get);
                    HttpEntity entity = response.getEntity();
                    long length = entity.getContentLength();
                    InputStream is = entity.getContent();
                    FileOutputStream fileOutputStream = null;
                    if (is != null) {
                        File file = new File( Environment.getExternalStorageDirectory(),Config.UPDATE_SAVENAME);
                        fileOutputStream = new FileOutputStream(file);
                        byte[] buf = new byte[1024];
                        int ch = -1;
                        int count = 0;
                        while ((ch = is.read(buf)) != -1) {
                            fileOutputStream.write(buf, 0, ch);
                            count += ch;
                            if (length > 0) {
                            }
                        }
                    }
                    fileOutputStream.flush();
                    if (fileOutputStream != null) {
                        fileOutputStream.close();
                    }
                    down();
                } catch (ClientProtocolException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();
    }

    void down() {
        handler.post(new Runnable() {
            public void run() {
                pBar.cancel();
                update();
            }
        });
    }

    void update() {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(), Config.UPDATE_SAVENAME)),
                "application/vnd.android.package-archive");
        startActivity(intent);
    }

// 不更新软件的代码

private void notNewVersionShow() {
        int verCode = Config.getVerCode(this);
        String verName = Config.getVerName(this);
        StringBuffer sb = new StringBuffer();
        sb.append("当前版本:");
        sb.append(verName);
        sb.append(" Code:");
        sb.append(verCode);
        sb.append(",
已是最新版,无需更新!");
        Dialog dialog = new AlertDialog.Builder(UpdateActivity.this)
            .setTitle("软件更新").setMessage(sb.toString())// 设置内容
            .setPositiveButton("确定",// 设置确定按钮
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog,int which) {
                        finish();
                    }
                }).create();// 创建
        // 显示对话框
        dialog.show();
    }

代码下载链接：http://www.apkbus.com/android-153953-1-1.html