How implement sticky footer in recyclerview

Improvising on Dmitriy Korobeynikov and solving the problem of calling notify dataset changed

public class StickyFooterItemDecoration extends RecyclerView.ItemDecoration { @Override public void getItemOffsets(Rect outRect, final View view, final RecyclerView parent, RecyclerView.State state) { int position = parent.getChildAdapterPosition(view); int adapterItemCount = parent.getAdapter().getItemCount(); if (adapterItemCount == RecyclerView.NO_POSITION || (adapterItemCount - 1) != position) { return; } outRect.top = calculateTopOffset(parent, view, adapterItemCount); } private int calculateTopOffset(RecyclerView parent, View footerView, int itemCount) { int topOffset = parent.getHeight() - parent.getPaddingTop() - parent.getPaddingBottom() - visibleChildHeightWithFooter(parent, footerView, itemCount); return topOffset < 0 ? 0 : topOffset; } private int visibleChildHeightWithFooter(RecyclerView parent, View footerView, int itemCount) { int totalHeight = 0; int onScreenItemCount = Math.min(parent.getChildCount(), itemCount); for (int i = 0; i < onScreenItemCount - 1; i++) { RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) parent.getChildAt(i) .getLayoutParams(); int height = parent.getChildAt(i).getHeight() + layoutParams.topMargin + layoutParams.bottomMargin; totalHeight += height; } int footerHeight = footerView.getHeight(); if (footerHeight == 0) { fixLayoutSize(footerView, parent); footerHeight = footerView.getHeight(); } footerHeight = footerHeight + footerView.getPaddingBottom() + footerView.getPaddingTop(); return totalHeight + footerHeight; } private void fixLayoutSize(View view, ViewGroup parent) { // Check if the view has a layout parameter and if it does not create one for it if (view.getLayoutParams() == null) { view.setLayoutParams(new ViewGroup.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)); } // Create a width and height spec using the parent as an example: // For width we make sure that the item matches exactly what it measures from the parent. // IE if layout says to match_parent it will be exactly parent.getWidth() int widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.EXACTLY); // For the height we are going to create a spec that says it doesn't really care what is calculated, // even if its larger than the screen int heightSpec = View.MeasureSpec .makeMeasureSpec(parent.getHeight(), View.MeasureSpec.UNSPECIFIED); // Get the child specs using the parent spec and the padding the parent has int childWidth = ViewGroup.getChildMeasureSpec(widthSpec, parent.getPaddingLeft() + parent.getPaddingRight(), view.getLayoutParams().width); int childHeight = ViewGroup.getChildMeasureSpec(heightSpec, parent.getPaddingTop() + parent.getPaddingBottom(), view.getLayoutParams().height); // Finally we measure the sizes with the actual view which does margin and padding changes to the sizes calculated view.measure(childWidth, childHeight); // And now we setup the layout for the view to ensure it has the correct sizes. view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); } } 

The selected answer is flawed. I already commented on it and explained why so. You may want to read that if your interested.

So if the selected answer is wrong, whats a different better way to solve this?

1) Create you layout like so:

<ConsraintLayout> <androidx.recyclerview.widget.RecyclerView android:id="@+id/recyclerview" android:layout_width="match_parent" android:layout_height="match_parent" android:clipToPadding="false" app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintBottom_toBottomOf="parent"/> <-- This is your footer and it can be anything you want --> <TextView android:id="@+id/yourFooter" android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintEnd_toEndOf="parent"/> </ConstraintLayout> 

2) Set the height of your footer as bottomPadding of your RecyclerView. It is crucial to do on preDraw so you can have the proper height or size of yur footer.

view.doOnPreDraw { val footerheight = yourFooter.height recyclerView.updatePadding(bottom = footerHeight) ... } 

3) Now all you need to do is to listen to recyclerview scroll and listen when you need to translate you footer at the correct time. So do something like:

view.doOnPreDraw { val footerheight = yourFooter.height recyclerView.updatePadding(bottom = footerHeight) recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() { override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) { val range = recyclerView.computeVerticalScrollRange() val extent = recyclerView.computeVerticalScrollExtent() val offset = recyclerView.computeVerticalScrollOffset() val threshHold = range - footerHeight val currentScroll = extent + offset val excess = currentScroll - threshHold yourFooter.transalationX = if (excess > 0) footerHeight * (excess.toFloat()/footerHeight.toFloat()) else 0F } }) } 

Hope this would be helpful to someone in the future.

I am using a Linearlayout with weights. I created multiple values for the footer weight, it works perfectly.

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white" android:orientation="vertical" <include layout="@layout/header" /> <android.support.v7.widget.RecyclerView android:id="@+id/recycleView" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="0.5" tools:layout_height="0dp" tools:listitem="@layout/row" /> <TextView android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="@dimen/footer_weight" android:padding="@dimen/extra_padding" android:paddingEnd="@dimen/small_padding" android:paddingLeft="@dimen/small_padding" android:paddingRight="@dimen/small_padding" android:paddingStart="@dimen/small_padding" android:text="@string/contact" android:textColor="@color/grey" /> </LinearLayout> 

All these solutions don't work. When you minimize app and open it again, footer flies lower than the bottom of the screen and you need to scroll to see it, even if there are just 1-2 items. You can add footer view below your recycler view in xml.

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/white"> <android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true" android:overScrollMode="never" android:scrollbars="none"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <android.support.v7.widget.RecyclerView android:id="@+id/recyclerView" android:layout_width="match_parent" android:layout_height="wrap_content" /> <android.support.v4.widget.Space android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:minHeight="1dp" /> <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <include layout="@layout/recyclerView_footer" /> </FrameLayout> </LinearLayout> </android.support.v4.widget.NestedScrollView> 

pay attention - I used NestedScrollView with

 recyclerView.isNestedScrollingEnabled = false 

and SpaceView has weight 1 and height = 0dp and all this stuff inside of linear layout and NestedScrollView has height = match_parent, now I have footer stuck to the bottom and it is moving further when list become larger

I know, that this is an old question, but I'll add an answer for those who would search for such decision in future. It is POSSIBLE to keep last item at the bottom of the screen in case you have only few or no items and make the last item to scroll with the recyclerview when you have many items.

How to achieve. Your RecyclerView adapter should apply several view types: views, which should be shown as a list item; view, which should be shown as footer; an empty view. You may check how to put items with different views to the RecyclerView here: https://stackoverflow.com/a/29362643/6329995 Locate an empty view between your main list and the footer view. Then in onBindViewHolder for the empty view check whether your main list views and footer view take all screen. If yes - set empty view height to zero, otherwise set it to the height which appears to be not taken by items and footer. That's all. You may also update that height dynamically, when you delete/add rows. Just call notifyItemChanged for your empty space item after you update the list.

You'd also set your RecyclerView height to match_parent or exact height, NOT wrap_content!

Hope this helps.

class FooterViewHolder(private val parent: ViewGroup) { ... fun bind(item: Item) { ... itemView.post(::adjustTop) } private fun adjustTop() { val parent = parent as RecyclerView var topOffset = parent.height for (child in parent.children) topOffset -= child.height (itemView.layoutParams as ViewGroup.MarginLayoutParams) .setMargins(0, topOffset.coerceAtLeast(0), 0, 0) } } 

If you cannot forget about RecyclerView and use ListView, then go check this link out Is there an addHeaderView equivalent for RecyclerView? it has everything you need. It's about header, but it's pretty much the same, except that header is in the beginning of your list and footer is in the end.