public class HKBaseApplication extends Application {
 // activity对象列表,用于activity统一管理
 private List<Activity> activityList;
 // 异常捕获
 protected boolean isNeedCaughtExeption = true;// 是否捕获未知异常
 private PendingIntent restartIntent;
 private MyUncaughtExceptionHandler uncaughtExceptionHandler;
 private String packgeName;

 @Override
 public void onCreate() {
 super.onCreate();

 activityList = new ArrayList<Activity>();
 packgeName = getPackageName();

 if (isNeedCaughtExeption) {
  cauchException();
 }
 }

 // -------------------异常捕获-----捕获异常后重启系统-----------------//

 private void cauchException() {
 Intent intent = new Intent();
 // 参数1：包名，参数2：程序入口的activity
 intent.setClassName(packgeName, packgeName + ".LoginActivity");
 restartIntent = PendingIntent.getActivity(getApplicationContext(), -1, intent,
  Intent.FLAG_ACTIVITY_NEW_TASK);

 // 程序崩溃时触发线程
 uncaughtExceptionHandler = new MyUncaughtExceptionHandler();
 Thread.setDefaultUncaughtExceptionHandler(uncaughtExceptionHandler);
 }

 // 创建服务用于捕获崩溃异常
 private class MyUncaughtExceptionHandler implements UncaughtExceptionHandler {
 @Override
 public void uncaughtException(Thread thread, Throwable ex) {
  // 保存错误日志
  saveCatchInfo2File(ex);

  // 1秒钟后重启应用
  AlarmManager mgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
  mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 1000, restartIntent);

  // 关闭当前应用
  finishAllActivity();
  finishProgram();
 }
 };

 /**
 * 保存错误信息到文件中
 * 
 * @return 返回文件名称
 */
 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()) {
   // 创建目录失败: 一般是因为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,在应用下次启动的时候去检查错误日志,发现新的错误日志,就发送给开发者
  }
  return fileName;
 } catch (Exception e) {
  System.out.println("an error occured while writing file..." + e.getMessage());
 }
 return null;
 }

 // ------------------------------activity管理-----------------------//

 // activity管理：从列表中移除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：结束所有activity
 public void finishAllActivity() {
 for (Activity activity : activityList) {
  if (null != activity) {
  activity.finish();
  }
 }
 }

 // 结束线程,一般与finishAllActivity()一起使用
 // 例如: finishAllActivity;finishProgram();
 public void finishProgram() {
 android.os.Process.killProcess(android.os.Process.myPid());
 }
}