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() {
@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");
}
}
Roman T... 6
这是我的答案.组
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context); linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);//or HORIZONTAL recyclerView.setLayoutManager(linearLayoutManager); adapter = new Adapter(...); recyclerView.setAdapter(adapter);
这提供了RecyclerView,适配器和数据的方向(替换...为上下文,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在列表的顶部,如果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,offset以像素为单位(向右滚动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或接近结束并且其高度(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
这是我的答案.组
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context); linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);//or HORIZONTAL recyclerView.setLayoutManager(linearLayoutManager); adapter = new Adapter(...); recyclerView.setAdapter(adapter);
这提供了RecyclerView,适配器和数据的方向(替换...为上下文,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在列表的顶部,如果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,offset以像素为单位(向右滚动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或接近结束并且其高度(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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