安卓rxjava内存泄漏

private void createSingle() {
        Single<List<String>> tvShowSingle = Single.fromCallable(new Callable<List<String>>() {
            @Override
            public List<String> call() throws Exception {

                List<String> list =new ArrayList<String>();
                int i = 0;
                while (i < 800000) {
                    list.add(String.valueOf(i));
                    Log.d(TAG, String.valueOf(i));
                    i++;
                }
                return list;
            }
        });
        tvShowSingle
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .compose(this.bindToLifecycle())
                .subscribe(new DisposableSingleObserver<List<String>>() {
                    @Override
                    public void onSuccess(@NonNull List<String> strings) {
                            Log.d(TAG,"a35");
                        mTextView.setText(strings.size()+"");
                    }

                    @Override
                    public void onError(@NonNull Throwable e) {

                    }
                });
    }