android– 如何滚动到recyclerview内的偏移量？

概述如何使用recyclelerview内的偏移滚动到特定位置？我用过publicLinearLayoutManagerlinearlayoutmanager;linearlayoutmanager.scrollToPositionWithOffset(0,scrolled);我也用过scrolltomRecyclerView.scrollTo(0,scrolled);我也使用了smoothScrolltopositionmRecycl

如何使用recyclelervIEw内的偏移滚动到特定位置？

我用过

public linearlayoutmanager linearlayoutmanager;linearlayoutmanager.scrollTopositionWithOffset(0, scrolled);

我也用过scrollto

mRecyclerVIEw.scrollTo(0, scrolled);

我也使用了smoothScrolltoposition

mRecyclerVIEw.smoothScrollToposition(scrolled);

但似乎没有人为我工作.

如果有人对此有所了解,请帮助我

UPDATE

功能我在哪里设置我的RecyclervIEw的适配器

public voID Nearby_Search_requestData() {    OkhttpClIEnt clIEnt = new OkhttpClIEnt();    clIEnt = MySSLTrust.trustcert(getActivity());    RestAdapter adapter = new RestAdapter.Builder().setEndpoint(SEARCH_MERCHANT_ENDPOINT).setClIEnt(new OkClIEnt(clIEnt)).build();    final RetrofitInterface API = adapter.create(RetrofitInterface.class);    if (API != null) {        API.post_Nearby_Search(page.toString(), new Callback<Nearby_Search_All>() {            @OverrIDe            public voID success(final Nearby_Search_All server_data, Response response) {                if (server_data.getSuccess() == 1) {                    if (server_data.getResults().size() == 0) {                        if (page != 0) {                            mRecyclerVIEw.scrollToposition(firstVis);                        } else {                            Log.d("hii", "zero");            //                NO_MERCHANT.setVisibility(VIEw.VISIBLE);                            mAdapter = new searchrecyclervIEwadapter(getActivity(), data, Font);                            mRecyclerVIEw.setAdapter(mAdapter);                        }                    } else {                        Log.d("scroll", "hii");            //            NO_MERCHANT.setVisibility(VIEw.INVISIBLE);                        if (server_data.getSize() > server_data.getResults().size()) {                            stay_on_this_page = true;                        } else {                            stay_on_this_page = false;                        }                        if (page == 0) {                            prev_total = 0;                            data.clear();                            Log.d("hii", "Page is zero " + prev_total);                            List_size = server_data.getSize();                        } else {                            Log.d("hii", "prev_total is " + prev_total + " Size is " + server_data.getSize() + " page is " + page);                            prev_total = server_data.getSize() * page;                            Log.d("hii", "Now prev_total is " + prev_total);                        }                        total_curr = server_data.getResults().size();                        Log.d("hii", "first place is " + server_data.getResults().get(0).getShop_name());                        for (int i = 0; i < total_curr; i++) {                            information current = new information();                            current.Title = server_data.getResults().get(i).getShop_name();                            String street = server_data.getResults().get(i).getAddress().getStreet();                            String area = server_data.getResults().get(i).getAddress().getArea();                            current.Address = street + " " + area;                            String[] splited = area.split(",");                            current.area1 = splited[1];                            current.type = server_data.getResults().get(i).getShop_type();                            current.rating = server_data.getResults().get(i).getrating();                            current.distance = server_data.getResults().get(i).getdistance();                            current.jeb_no = server_data.getResults().get(i).getJeb_no();                            current.total_photos = server_data.getResults().get(i).getTotal_photos();                            if (current.total_photos  == 0) {                            } else if (current.total_photos  == 1) {                                current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1();                            } else if (current.total_photos  == 2) {                                current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1();                                current.photo_2 = server_data.getResults().get(i).getPhotos().getPhoto_2();                            } else {                                current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1();                                current.photo_2 = server_data.getResults().get(i).getPhotos().getPhoto_2();                            }                            data.add(current);                        }                        if (adapterinitialised) {                            mAdapter.notifyDataSetChanged();                        } else {                            mAdapter = new searchrecyclervIEwadapter(getActivity(), data, Font);                          //  mAdapter.setClickListener(Search.class);                            mRecyclerVIEw.setAdapter(mAdapter);                            adapterinitialised = true;                        }                    }                 //   mRecyclerVIEw.scrollToposition(firstVis);                    Log.d("scroll", "hee");                    scrolled = scrolled + 10;                    Log.d("scroll", "scrolled: " + scrolled);                    // ALL BELOW CODE I HAVE TRIED FOR SCRolliNG BUT NONE WAS HELPFul                /*    mRecyclerVIEw.post(new Runnable() {                        @OverrIDe                        public voID run() {                            mRecyclerVIEw.smoothScrollToposition(scrolled);                            // or do mRecyclerVIEw.scrollTo(0, scrolled);                        }                    });                    */                 //   l.scrollTopositionWithOffset(0, scrolled);                //    mRecyclerVIEw.smoothScrollToposition(scrolled);                //    mRecyclerVIEw.scrollBy(0, scrolled);                //    l.scrollToposition();                //        mRecyclerVIEw.scrollToposition(scrolled);                //    mRecyclerVIEw.smoothScrollBy(0, scrolled);                //    mRecyclerVIEw.scrollBy(0, 10);                //    mRecyclerVIEw.scrollTo(0, 10);                } else {                    Log.d("hii", server_data.getMessage());                    Toast.makeText(getActivity(), server_data.getMessage(), Toast.LENGTH_SHORT).show();                }            }            @OverrIDe            public voID failure(RetrofitError retrofitError) {                Log.d("hii", "failure");                Log.e("hii", retrofitError.toString());                Toast.makeText(getActivity(), retrofitError.toString(), Toast.LENGTH_SHORT).show();            }        });    } else {        Log.d("hii", "API null");    }}

解决方法:

这是我的答案.组

linearlayoutmanager linearlayoutmanager = new linearlayoutmanager(context);linearlayoutmanager.setorIEntation(linearlayoutmanager.VERTICAL);//or HORIZONTALrecyclerVIEw.setLayoutManager(linearlayoutmanager);adapter = new Adapter(...);recyclerVIEw.setAdapter(adapter);

这提供了RecyclerVIEw,适配器和数据的方向(替换…与上下文,列表,数组或所需的其他数据).比设定

linearlayoutmanager.scrollTopositionWithOffset(position, offset);

现在有趣的事情：

>这将滚动到位置并将其放置在列表的顶部,以防VERTICAL线性布局管理器在左侧与HORIZONTAL
>如果偏移为正,则VERTICAL布局管理器将向下滚动此位置的偏移量(以像素为单位)(向右使用HORIZONTAL布局管理器)
>如果position为0且offset为正,则不会发生任何事情,因为RecyclerVIEw没有任何项目位于0位置的顶部(左侧是HORIZONTAL布局管理器)
>如果position为0且offset为负,则VERTICAL布局管理器将向上滚动0位置偏移(以像素为单位)(向左与HORIZONTAL)
>如果RecyclerVIEw的高度(HORIZONTAL方向的宽度)小于屏幕尺寸,也不会发生任何事情
>如果要滚动到的位置是最后一个或接近结束它的高度(在HORIZONTAL方向的情况下的宽度)相对较小,它也将错误地滚动

希望这将通过RecyclerVIEw的布局管理器为您阐明情况

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