public class HKBaseApplication extends Application { // activity對象列表,用于activity統一管理 private List<Activity> activityList; // 異常捕獲 protected boolean isNeedCaughtExeption = true;// 是否捕獲未知異常 private PendingIntent restartIntent; private MyUncaughtExceptionHandler uncaughtExceptionHandler; private String packgeName; @Override public void onCreate() { super.onCreate(); activityList = new ArrayList<Activity>(); packgeName = getPackageName(); if (isNeedCaughtExeption) {  cauchException(); } } // -------------------異常捕獲-----捕獲異常后重啟系統-----------------// private void cauchException() { Intent intent = new Intent(); // 參數1：包名，參數2：程序入口的activity intent.setClassName(packgeName, packgeName + ".LoginActivity"); restartIntent = PendingIntent.getActivity(getApplicationContext(), -1, intent,  Intent.FLAG_ACTIVITY_NEW_TASK); // 程序崩潰時觸發線程 uncaughtExceptionHandler = new MyUncaughtExceptionHandler(); Thread.setDefaultUncaughtExceptionHandler(uncaughtExceptionHandler); } // 創建服務用于捕獲崩潰異常 private class MyUncaughtExceptionHandler implements UncaughtExceptionHandler { @Override public void uncaughtException(Thread thread, Throwable ex) {  // 保存錯誤日志  saveCatchInfo2File(ex);  // 1秒鐘后重啟應用  AlarmManager mgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);  mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 1000, restartIntent);  // 關閉當前應用  finishAllActivity();  finishProgram(); } }; /** * 保存錯誤信息到文件中 *  * @return 返回文件名稱 */ private String saveCatchInfo2File(Throwable ex) { Writer writer = new StringWriter(); PrintWriter printWriter = new PrintWriter(writer); ex.printStackTrace(printWriter); Throwable cause = ex.getCause(); while (cause != null) {  cause.printStackTrace(printWriter);  cause = cause.getCause(); } printWriter.close(); String sb = writer.toString(); try {  DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");  String time = formatter.format(new Date());  String fileName = time + ".txt";  System.out.println("fileName:" + fileName);  if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {  String filePath = Environment.getExternalStorageDirectory() + "/HKDownload/" + packgeName   + "/crash/";  File dir = new File(filePath);  if (!dir.exists()) {   if (!dir.mkdirs()) {   // 創建目錄失敗: 一般是因為SD卡被拔出了   return "";   }  }  System.out.println("filePath + fileName:" + filePath + fileName);  FileOutputStream fos = new FileOutputStream(filePath + fileName);  fos.write(sb.getBytes());  fos.close();  //文件保存完了之后,在應用下次啟動的時候去檢查錯誤日志,發現新的錯誤日志,就發送給開發者  }  return fileName; } catch (Exception e) {  System.out.println("an error occured while writing file..." + e.getMessage()); } return null; } // ------------------------------activity管理-----------------------// // activity管理：從列表中移除activity public void removeActivity(Activity activity) { activityList.remove(activity); } // activity管理：添加activity到列表 public void addActivity(Activity activity) { activityList.add(activity); } // activity管理：結束所有activity public void finishAllActivity() { for (Activity activity : activityList) {  if (null != activity) {  activity.finish();  } } } // 結束線程,一般與finishAllActivity()一起使用 // 例如: finishAllActivity;finishProgram(); public void finishProgram() { android.os.Process.killProcess(android.os.Process.myPid()); }}