android自动更新新版模块（简单，实用）

来源：互联网发布：程序员空闲编辑：程序博客网时间：2024/04/30 23:47
http://blog.csdn.net/hytfly/article/details/8549858
每一个好的android应用都得有自动更新的模块
直接上代码了，非常简单。
[java] view plaincopyprint?
public class MainActivity extends Activity {  
    /** Called when the activity is first created. */  
    String newVerName = "";//新版本名称  
    int newVerCode = -1;//新版本号  
    ProgressDialog pd = null;  
    String UPDATE_SERVERAPK = "ApkUpdateAndroid.apk";  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
        if(getServerVer()){  
            int verCode = this.getVerCode(this);  
            if(newVerCode>verCode){  
                doNewVersionUpdate();//更新版本  
            }else{  
                notNewVersionUpdate();//提示已是最新版本  
            }  
        }  
    }  
     
    /** 
     * 获得版本号 
     */  
    public int getVerCode(Context context){  
        int verCode = -1;  
        try {  
            verCode = context.getPackageManager().getPackageInfo("com.update.apk", 0).versionCode;  
        } catch (NameNotFoundException e) {  
            // TODO Auto-generated catch block  
            Log.e("版本号获取异常", e.getMessage());  
        }  
        return verCode;  
    }  
     
    /** 
     * 获得版本名称 
     */  
    public String getVerName(Context context){  
        String verName = "";  
        try {  
            verName = context.getPackageManager().getPackageInfo("com.update.apk", 0).versionName;  
        } catch (NameNotFoundException e) {  
            Log.e("版本名称获取异常", e.getMessage());  
        }  
        return verName;  
    }  
     
    /** 
     * 从服务器端获得版本号与版本名称 
     * @return 
     */  
    public boolean getServerVer(){  
        try {  
            URL url = new URL("http://10.0.2.2:8080/ApkUpdateService/ver");  
            HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();  
            httpConnection.setDoInput(true);  
            httpConnection.setDoOutput(true);  
            httpConnection.setRequestMethod("GET");  
            httpConnection.connect();  
            InputStreamReader reader = new InputStreamReader(httpConnection.getInputStream());  
            BufferedReader bReader = new BufferedReader(reader);  
            String json = bReader.readLine();  
            JSONArray array = new JSONArray(json);  
            JSONObject jsonObj = array.getJSONObject(0);  
            newVerCode = Integer.parseInt(jsonObj.getString("verCode"));         
            newVerName = jsonObj.getString("verName");  
        } catch (Exception e) {  
            // TODO Auto-generated catch block  
            e.printStackTrace();  
            return false;  
        }  
        return true;  
    }  
     
    /** 
     * 不更新版本 
     */  
    public void notNewVersionUpdate(){  
        int verCode = this.getVerCode(this);  
        String verName = this.getVerName(this);  
        StringBuffer sb = new StringBuffer();  
        sb.append("当前版本：");  
        sb.append(verName);  
        sb.append(" Code:");  
        sb.append(verCode);  
        sb.append("\n已是最新版本，无需更新");  
        Dialog dialog = new AlertDialog.Builder(this)  
        .setTitle("软件更新")  
        .setMessage(sb.toString())  
        .setPositiveButton("确定", new DialogInterface.OnClickListener() {  
             
            @Override  
            public void onClick(DialogInterface dialog, int which) {  
                // TODO Auto-generated method stub  
                finish();  
            }  
        }).create();  
        dialog.show();  
    }  
     
    /** 
     * 更新版本 
     */  
    public void doNewVersionUpdate(){  
        int verCode = this.getVerCode(this);  
        String verName = this.getVerName(this);  
        StringBuffer sb = new StringBuffer();  
        sb.append("当前版本：");  
        sb.append(verName);  
        sb.append(" Code:");  
        sb.append(verCode);  
        sb.append(",发现版本：");  
        sb.append(newVerName);  
        sb.append(" Code:");  
        sb.append(verCode);  
        sb.append(",是否更新");  
        Dialog dialog = new AlertDialog.Builder(this)  
        .setTitle("软件更新")  
        .setMessage(sb.toString())  
        .setPositiveButton("更新", new DialogInterface.OnClickListener() {  
             
            @Override  
            public void onClick(DialogInterface dialog, int which) {  
                // TODO Auto-generated method stub  
                pd = new ProgressDialog(MainActivity.this);  
                pd.setTitle("正在下载");  
                pd.setMessage("请稍后。。。");  
                pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);  
                downFile("http://10.0.2.2:8080/ApkUpdateService/ApkUpdateAndroid.apk");  
            }  
        })  
        .setNegativeButton("暂不更新", new DialogInterface.OnClickListener() {  
             
            @Override  
            public void onClick(DialogInterface dialog, int which) {  
                // TODO Auto-generated method stub  
                finish();  
            }  
        }).create();  
        //显示更新框  
        dialog.show();  
    }  
     
    /** 
     * 下载apk 
     */  
    public void downFile(final String url){  
        pd.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(),UPDATE_SERVERAPK);  
                        fileOutputStream = new FileOutputStream(file);  
                        byte[] b = new byte[1024];  
                        int charb = -1;  
                        int count = 0;  
                        while((charb = is.read(b))!=-1){  
                            fileOutputStream.write(b, 0, charb);  
                            count += charb;  
                        }  
                    }  
                    fileOutputStream.flush();  
                    if(fileOutputStream!=null){  
                        fileOutputStream.close();  
                    }  
                    down();  
                }  catch (Exception e) {  
                    // TODO Auto-generated catch block  
                    e.printStackTrace();  
                }  
            }  
        }.start();  
    }  
     
    Handler handler = new Handler() {  
  
        @Override  
        public void handleMessage(Message msg) {  
  
            super.handleMessage(msg);                 
            pd.cancel();  
            update();  
        }  
    };  
     
    /** 
     * 下载完成，通过handler将下载对话框取消 
     */  
    public void down(){  
        new Thread(){  
            public void run(){  
                Message message = handler.obtainMessage();  
                handler.sendMessage(message);  
            }  
        }.start();  
    }  
     
    /** 
     * 安装应用 
     */  
    public void update(){  
        Intent intent = new Intent(Intent.ACTION_VIEW);  
        intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK))  
                , "application/vnd.android.package-archive");  
        startActivity(intent);  
    }  
}   
0 0