Android开发之系统退出

[java]
public void SystemExit()
    {
        AlertDialog exitDialog = new AlertDialog.Builder(SystemBaseActivity.this).
                setTitle("提示").
                setMessage("是否退出本程序？").
                setPositiveButton("确定", new DialogInte易做图ce.OnClickListener()
                {
                    @Override
                    public void onClick(DialogInte易做图ce dialog, int which)
                    {
                        for(int i = 0; i < Global.activityList.size(); i++)
                        {
                            if(Global.activityList.get(i) != null)
                            {
                                Global.activityList.get(i).finish();
                            }
                        }

                        //取消广播
                        Intent iRefreshService =new Intent(Intent.ACTION_RUN);
                        iRefreshService.setClass(sys_Context, BootReceiver.class);
                        iRefreshService.setAction("ASYNCREFRESH");
                        PendingIntent sender=PendingIntent.getBroadcast(sys_Context, 0, iRefreshService, 0);
                        AlarmManager am=(AlarmManager)sys_Context.getSystemService(sys_Context.ALARM_SERVICE);
                        am.cancel(sender);
                        //退出停止服务
                        Intent iRefresh = new Intent(Intent.ACTION_RUN);
                        iRefresh.setClass(sys_Context, AsyncRefresh.class);
                        sys_Context.stopService(iRefresh);
                        //清除通知栏
                        CommonUtil common = new CommonUtil();
                        common.removeNotification(sys_Context, -1);

                        ActivityManager activityManager = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
                        activityManager.restartPackage("com.LeadingGH.Activity");
                        //注销VPN
                        if(StringUtil.vpnAuth!=null)
                        {
                            StringUtil.vpnAuth.VPNLogOut();
                        }
                        //退出APK
                        System.exit(0);
                    }
                }).setNegativeButton("取消", new DialogInte易做图ce.OnClickListener()
                {
                    @Override
                    public void onClick(DialogInte易做图ce dialog, int which)

补充：移动开发 , Android ,