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
转载于:https://www.cnblogs.com/xiaobuild/archive/2012/04/25/2469909.html
