Android rxjava内存泄漏问题

虽然rxjava很好用, 如果产生过多的订阅就会造成内存泄漏问题, 如何解决呢?

@Override    protected void onDestroy() {        super.onDestroy();        //主动解除订阅关系        if (mSubscription != null && !mSubscription.isUnsubscribed()) {            mSubscription.unsubscribe();        }    }

mSubcsription是 被观察者订阅观察者的返回值;

Subscription subscription = Observable.from(list)                .filter(new Func1<User, Boolean>() {                    @Override                    public Boolean call(User user) {                        return !user.id.equals("2");                    }                })//                .elementAt(3)//只打印出index为3的元素                .subscribeOn(Schedulers.io())                .observeOn(AndroidSchedulers.mainThread())                .subscribe(new Action1<User>() {                    @Override                    public void call(User user) {                        System.out.println("MainActivity.call=" + user.id);                    }                });