Heterogenous Recyclerview: Retain scroll position
I have horizontal RecyclerViews inside a vertical Recyclerview as my HomeFragment.
And everytime I navigate to a different fragment by clicking an item in the horizontal RecyclerView and go back to the HomeFragment, my horizontal RecyclerViews are scrolled to the first item and the last state (or scroll position) are not retained. How can I be able to achieve that when I go back to HomeFragment, the scroll position are the same as to before I navigated to a different Fragment?
I've come accross using LinearLayoutManager's onSaveInstanceState() and onRestoreInstanceState() but this is my code, I added the horizontal recyclerviews on the onBind() of the vertical recyclerview and I don't know where to use those methods.
void onBind(HomeData data) {
binding.setVariable(BR.homedata, data);
binding.executePendingBindings();
if (binding instanceof ItemMovieListBinding) {
MoviesAdapter adapter = new MoviesAdapter(new MovieDiffCallback(), clickCallback);
((ItemMovieListBinding) binding).rvMovieList.setLayoutManager(new LinearLayoutManager(context, RecyclerView.HORIZONTAL, false));
((ItemMovieListBinding) binding).rvMovieList.setAdapter(adapter);
adapter.submitList((List<Movie>) data.getData());
}
}
android android-recyclerview asked Nov 22 '18 at 16:12
RalphRalph
101413
add a comment |
I have horizontal RecyclerViews inside a vertical Recyclerview as my HomeFragment.
And everytime I navigate to a different fragment by clicking an item in the horizontal RecyclerView and go back to the HomeFragment, my horizontal RecyclerViews are scrolled to the first item and the last state (or scroll position) are not retained. How can I be able to achieve that when I go back to HomeFragment, the scroll position are the same as to before I navigated to a different Fragment?
I've come accross using LinearLayoutManager's onSaveInstanceState() and onRestoreInstanceState() but this is my code, I added the horizontal recyclerviews on the onBind() of the vertical recyclerview and I don't know where to use those methods.
void onBind(HomeData data) {
binding.setVariable(BR.homedata, data);
binding.executePendingBindings();
if (binding instanceof ItemMovieListBinding) {
MoviesAdapter adapter = new MoviesAdapter(new MovieDiffCallback(), clickCallback);
((ItemMovieListBinding) binding).rvMovieList.setLayoutManager(new LinearLayoutManager(context, RecyclerView.HORIZONTAL, false));
((ItemMovieListBinding) binding).rvMovieList.setAdapter(adapter);
adapter.submitList((List<Movie>) data.getData());
}
}
asked Nov 22 '18 at 16:12
RalphRalph
101413
developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27
add a comment |
I have horizontal RecyclerViews inside a vertical Recyclerview as my HomeFragment.
And everytime I navigate to a different fragment by clicking an item in the horizontal RecyclerView and go back to the HomeFragment, my horizontal RecyclerViews are scrolled to the first item and the last state (or scroll position) are not retained. How can I be able to achieve that when I go back to HomeFragment, the scroll position are the same as to before I navigated to a different Fragment?
I've come accross using LinearLayoutManager's onSaveInstanceState() and onRestoreInstanceState() but this is my code, I added the horizontal recyclerviews on the onBind() of the vertical recyclerview and I don't know where to use those methods.
void onBind(HomeData data) {
binding.setVariable(BR.homedata, data);
binding.executePendingBindings();
if (binding instanceof ItemMovieListBinding) {
MoviesAdapter adapter = new MoviesAdapter(new MovieDiffCallback(), clickCallback);
((ItemMovieListBinding) binding).rvMovieList.setLayoutManager(new LinearLayoutManager(context, RecyclerView.HORIZONTAL, false));
((ItemMovieListBinding) binding).rvMovieList.setAdapter(adapter);
adapter.submitList((List<Movie>) data.getData());
}
}
asked Nov 22 '18 at 16:12
RalphRalph
101413
I have horizontal RecyclerViews inside a vertical Recyclerview as my HomeFragment.
And everytime I navigate to a different fragment by clicking an item in the horizontal RecyclerView and go back to the HomeFragment, my horizontal RecyclerViews are scrolled to the first item and the last state (or scroll position) are not retained. How can I be able to achieve that when I go back to HomeFragment, the scroll position are the same as to before I navigated to a different Fragment?
I've come accross using LinearLayoutManager's onSaveInstanceState() and onRestoreInstanceState() but this is my code, I added the horizontal recyclerviews on the onBind() of the vertical recyclerview and I don't know where to use those methods.
void onBind(HomeData data) {
binding.setVariable(BR.homedata, data);
binding.executePendingBindings();
if (binding instanceof ItemMovieListBinding) {
MoviesAdapter adapter = new MoviesAdapter(new MovieDiffCallback(), clickCallback);
((ItemMovieListBinding) binding).rvMovieList.setLayoutManager(new LinearLayoutManager(context, RecyclerView.HORIZONTAL, false));
((ItemMovieListBinding) binding).rvMovieList.setAdapter(adapter);
adapter.submitList((List<Movie>) data.getData());
}
}
asked Nov 22 '18 at 16:12
RalphRalph
101413
asked Nov 22 '18 at 16:12
RalphRalph
101413
asked Nov 22 '18 at 16:12
RalphRalph
101413
asked Nov 22 '18 at 16:12
RalphRalph
101413
asked Nov 22 '18 at 16:12
RalphRalph
101413
101413
developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27
add a comment |
developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27
developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27
developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27
add a comment |
1 Answer
1
active
oldest
votes
You can just remember position, which user before left the screen and restore it:
rvMovieList.scrollToPosition(yourPosition);
Or you can init your adapter and recyclerView in onActivityCreated. That will help you to avoid the recreation of views.
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can just remember position, which user before left the screen and restore it:
rvMovieList.scrollToPosition(yourPosition);
Or you can init your adapter and recyclerView in onActivityCreated. That will help you to avoid the recreation of views.
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
add a comment |
You can just remember position, which user before left the screen and restore it:
rvMovieList.scrollToPosition(yourPosition);
Or you can init your adapter and recyclerView in onActivityCreated. That will help you to avoid the recreation of views.
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
add a comment |
You can just remember position, which user before left the screen and restore it:
rvMovieList.scrollToPosition(yourPosition);
Or you can init your adapter and recyclerView in onActivityCreated. That will help you to avoid the recreation of views.
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
You can just remember position, which user before left the screen and restore it:
rvMovieList.scrollToPosition(yourPosition);
Or you can init your adapter and recyclerView in onActivityCreated. That will help you to avoid the recreation of views.
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
answered Nov 22 '18 at 17:07
samaromkusamaromku
624
624
add a comment |
add a comment |
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developer.android.com/training/implementing-navigation/… This might help
– Scott Chambers
Nov 22 '18 at 16:27