使用前台服务一段时间后app被销毁，如何重启app？

public class RestartReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            // 启动app
            Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName());
            if (launchIntent != null) {
                launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(launchIntent);
            }
        }
    }
}

public class RestartService extends Service {
    private static final int RESTART_INTERVAL = 1000 * 60 * 60 * 24; // 24小时

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        Intent restartIntent = new Intent(this, RestartReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, restartIntent, 0);
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + RESTART_INTERVAL, RESTART_INTERVAL, pendingIntent);
        return super.onStartCommand(intent, flags, startId);
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}

public class BackgroundService extends Service {
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // 执行需要长时间运行的任务
        return START_STICKY;
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        // 重新启动app
        Intent restartIntent = getPackageManager().getLaunchIntentForPackage(getPackageName());
        if (restartIntent != null) {
            restartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(restartIntent);
        }
    }
}