android 退出程序

1：

android.os.Process.killProcess(android.os.Process.myPid());  
finish();
System.exit(0);
     

2：
Intent intent=new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
System.exit(0);

 

PS:使用第二种方式退出 会出现本来下载到sdcard的html文件自动删除，没有搞清楚原因，

知道的同学麻烦告诉我一下。

下载html的方法：

View Code

public static Boolean downHtml(String pageURL, String filePath) {

        StringBuilder pageHTML = new StringBuilder();

        try {

            URL url = new URL(pageURL);

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // connection.setRequestProperty("User-Agent", "MSIE 7.0");

            BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));

            String line = null;

            while ((line = br.readLine()) != null) {

                pageHTML.append(line);

                pageHTML.append("\r\n");

            }

            connection.disconnect();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return FileUtils.writeStringToFile(pageHTML.toString(), filePath) ; 

    }

View Code

    public static Boolean writeStringToFile(String strInput, String pFilePaht) {

        OutputStream out = null;

        File file = new File(getRootPath() + pFilePaht);

        try {

            file.deleteOnExit();

            file = createFile(pFilePaht);

            out = new FileOutputStream(file);

            byte[] bytes = strInput.getBytes();

            out.write(bytes);

            out.flush();

            return true;

        } catch (FileNotFoundException e) {

            e.printStackTrace();

            return false;

        } catch (IOException e) {

            e.printStackTrace();

            return false;

        } finally {

            file = null;

            try {

                if (out != null)

                    out.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }

http://blog.csdn.net/victoryckl/article/details/6705388