How can I animate the RecyclerView Items when there are appearing?
The default item animator only animates when a data is added or removed after the recycler data has been set.
How can this be achieved?
How can I animate the RecyclerView Items when there are appearing?
The default item animator only animates when a data is added or removed after the recycler data has been set.
How can this be achieved?
Made Simple with XML only
res/anim/layout_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
android:animation="@anim/item_animation_fall_down"
android:animationOrder="normal"
android:delay="15%" />
res/anim/item_animation_fall_down.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500">
<translate
android:fromYDelta="-20%"
android:toYDelta="0"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<scale
android:fromXScale="105%"
android:fromYScale="105%"
android:toXScale="100%"
android:toYScale="100%"
android:pivotX="50%"
android:pivotY="50%"
android:interpolator="@android:anim/decelerate_interpolator"
/>
</set>
Use in layouts and recylcerview like:
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutAnimation="@anim/layout_animation"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
recyclerView.scheduleLayoutAnimation()
after data set changed, if not, the animation would not work. –
Reconstructionism notifyItemInserted
on the adapter, this just animates the parent view, not the items inside –
Agonic EDIT :
According to the ItemAnimator documentation :
This class defines the animations that take place on items as changes are made to the adapter.
So unless you add your items one by one to your RecyclerView
and refresh the view at each iteration, I don't think ItemAnimator
is the solution to your need.
Here is how you can animate the RecyclerView
items when they appear using a CustomAdapter :
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder>
{
private Context context;
// The items to display in your RecyclerView
private ArrayList<String> items;
// Allows to remember the last item shown on screen
private int lastPosition = -1;
public static class ViewHolder extends RecyclerView.ViewHolder
{
TextView text;
// You need to retrieve the container (ie the root ViewGroup from your custom_item_layout)
// It's the view that will be animated
FrameLayout container;
public ViewHolder(View itemView)
{
super(itemView);
container = (FrameLayout) itemView.findViewById(R.id.item_layout_container);
text = (TextView) itemView.findViewById(R.id.item_layout_text);
}
}
public CustomAdapter(ArrayList<String> items, Context context)
{
this.items = items;
this.context = context;
}
@Override
public CustomAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.custom_item_layout, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position)
{
holder.text.setText(items.get(position));
// Here you apply the animation when the view is bound
setAnimation(holder.itemView, position);
}
/**
* Here is the key method to apply the animation
*/
private void setAnimation(View viewToAnimate, int position)
{
// If the bound view wasn't previously displayed on screen, it's animated
if (position > lastPosition)
{
Animation animation = AnimationUtils.loadAnimation(context, android.R.anim.slide_in_left);
viewToAnimate.startAnimation(animation);
lastPosition = position;
}
}
}
And your custom_item_layout would look like this :
<FrameLayout
android:id="@+id/item_layout_container"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/item_layout_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeightSmall"/>
</FrameLayout>
For more information about CustomAdapters and RecyclerView
, refer to this training on the official documentation.
Problems on fast scroll
Using this method could cause problems with fast scrolling. The view could be reused while the animation is been happening. In order to avoid that is recommendable to clear the animation when is detached.
@Override
public void onViewDetachedFromWindow(final RecyclerView.ViewHolder holder)
{
((CustomViewHolder)holder).clearAnimation();
}
On CustomViewHolder:
public void clearAnimation()
{
mRootLayout.clearAnimation();
}
Old answer :
Give a look at Gabriele Mariotti's repo, I'm pretty sure you'll find what you need. He provides simple ItemAnimators for the RecyclerView, such as SlideInItemAnimator or SlideScaleItemAnimator.
lastPosition
updated, to know the index of the last animated item. If you already use it, can you be more explicit about your problem? –
Wellappointed StaggeredGridLayoutManager
. When using either LinearLayoutManager
or GridLayoutManager
, it appears I have no problem at all. Have you noticed anything similar? –
Wellappointed LinearLayoutManager
and having problem during fast scroll. –
Itch onViewDetachedFromWindow
and call clearAnimation
on the view. The problem is that there are animations running when RecyclerView is trying to reuse the view. –
Parterre onViewDetachedFromWindow
–
Parterre android.R.anim.slide_in_left
by R.anim.slide_bottom_to_top
and create a new file with your bottom-to-top translation animation in your res/anim folder –
Wellappointed onViewDetachedFromWindow
and clearAnimation
?? in custom ViewHolder class or adapter ?? –
Denominational if (position > lastPosition)
then animation runs on scroll up/down for all items (on every scroll), any idea what is the problem? –
Reproval layout_weight
, if I move the recyclerview one level up (with no layout_weight
on parent), everything works fine, any idea? –
Reproval Made Simple with XML only
res/anim/layout_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
android:animation="@anim/item_animation_fall_down"
android:animationOrder="normal"
android:delay="15%" />
res/anim/item_animation_fall_down.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500">
<translate
android:fromYDelta="-20%"
android:toYDelta="0"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<scale
android:fromXScale="105%"
android:fromYScale="105%"
android:toXScale="100%"
android:toYScale="100%"
android:pivotX="50%"
android:pivotY="50%"
android:interpolator="@android:anim/decelerate_interpolator"
/>
</set>
Use in layouts and recylcerview like:
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutAnimation="@anim/layout_animation"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
recyclerView.scheduleLayoutAnimation()
after data set changed, if not, the animation would not work. –
Reconstructionism notifyItemInserted
on the adapter, this just animates the parent view, not the items inside –
Agonic I animated fading in of Recyclerview
items when they first appear as shown in the code below. Perhaps this will be of use to someone.
private final static int FADE_DURATION = 1000; //FADE_DURATION in milliseconds
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.getTextView().setText("some text");
// Set the view to fade in
setFadeAnimation(holder.itemView);
}
private void setFadeAnimation(View view) {
AlphaAnimation anim = new AlphaAnimation(0.0f, 1.0f);
anim.setDuration(FADE_DURATION);
view.startAnimation(anim);
}
You can also replace setFadeAnimation()
with the following setScaleAnimation()
to animate appearance of items by scaling them from a point:
private void setScaleAnimation(View view) {
ScaleAnimation anim = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
anim.setDuration(FADE_DURATION);
view.startAnimation(anim);
}
The code above has some warts in so far as when you scroll the RecyclerView
items always fade or scale. If you wish you can add code to just allow the animation to happen when the fragment or activity containing the RecyclerView
is first created (e.g. get the system time on creation and only allow animation for the first FADE_DURATION milliseconds).
I created animation from pbm's answer with little modification
to make the aninmation run only once
in the other word the Animation appear with you scroll down only
private int lastPosition = -1;
private void setAnimation(View viewToAnimate, int position) {
// If the bound view wasn't previously displayed on screen, it's animated
if (position > lastPosition) {
ScaleAnimation anim = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
anim.setDuration(new Random().nextInt(501));//to make duration random number between [0,501)
viewToAnimate.startAnimation(anim);
lastPosition = position;
}
}
and in onBindViewHolder
call the function
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.getTextView().setText("some text");
// call Animation function
setAnimation(holder.itemView, position);
}
lastPosition
represents the number of rendered views, so it the beginning its value -1
, every time a new view is being rendered we start an animation and increase the position –
Azerbaijani You can add a android:layoutAnimation="@anim/rv_item_animation"
attribute to RecyclerView
like this:
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutAnimation="@anim/layout_animation_fall_down"
/>
thanks for the excellent article here: https://proandroiddev.com/enter-animation-using-recyclerview-and-layoutanimation-part-1-list-75a874a5d213
A good place to start is this: https://github.com/wasabeef/recyclerview-animators/blob/master/animators/src/main/java/jp/wasabeef/recyclerview/adapters/AnimationAdapter.java
You don't even need the full library, that class is enough. Then if you just implement your Adapter class giving an animator like this:
@Override
protected Animator[] getAnimators(View view) {
return new Animator[]{
ObjectAnimator.ofFloat(view, "translationY", view.getMeasuredHeight(), 0)
};
}
@Override
public long getItemId(final int position) {
return getWrappedAdapter().getItemId(position);
}
you'll see items appearing from the bottom as they scroll, also avoiding the problem with the fast scroll.
Animating items in the recyclerview when they are binded in the adapter might not be the best idea as that can cause the items in the recyclerview to animate at different speeds. In my case, the item at the end of the recyclerview animate to their position quicker then the ones at the top as the ones at the top have further to travel so it made it look untidy.
The original code that I used to animate each item into the recyclerview can be found here:
http://frogermcs.github.io/Instagram-with-Material-Design-concept-is-getting-real/
But I will copy and paste the code in case the link breaks.
STEP 1: Set this inside your onCreate method so that you ensure the animation only run once:
if (savedInstanceState == null) {
pendingIntroAnimation = true;
}
STEP 2: You will need to put this code into the method where you want to start the animation:
if (pendingIntroAnimation) {
pendingIntroAnimation = false;
startIntroAnimation();
}
In the link, the writer is animating the toolbar icons, so he put it inside this method:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
inboxMenuItem = menu.findItem(R.id.action_inbox);
inboxMenuItem.setActionView(R.layout.menu_item_view);
if (pendingIntroAnimation) {
pendingIntroAnimation = false;
startIntroAnimation();
}
return true;
}
STEP 3: Now write the logic for the startIntroAnimation():
private static final int ANIM_DURATION_TOOLBAR = 300;
private void startIntroAnimation() {
btnCreate.setTranslationY(2 * getResources().getDimensionPixelOffset(R.dimen.btn_fab_size));
int actionbarSize = Utils.dpToPx(56);
toolbar.setTranslationY(-actionbarSize);
ivLogo.setTranslationY(-actionbarSize);
inboxMenuItem.getActionView().setTranslationY(-actionbarSize);
toolbar.animate()
.translationY(0)
.setDuration(ANIM_DURATION_TOOLBAR)
.setStartDelay(300);
ivLogo.animate()
.translationY(0)
.setDuration(ANIM_DURATION_TOOLBAR)
.setStartDelay(400);
inboxMenuItem.getActionView().animate()
.translationY(0)
.setDuration(ANIM_DURATION_TOOLBAR)
.setStartDelay(500)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
startContentAnimation();
}
})
.start();
}
My preferred alternative:
I would rather animate the whole recyclerview instead of the items inside the recyclerview.
STEP 1 and 2 remains the same.
In STEP 3, as soon as your API call returns with your data, I would start the animation.
private void startIntroAnimation() {
recyclerview.setTranslationY(latestPostRecyclerview.getHeight());
recyclerview.setAlpha(0f);
recyclerview.animate()
.translationY(0)
.setDuration(400)
.alpha(1f)
.setInterpolator(new AccelerateDecelerateInterpolator())
.start();
}
This would animate your entire recyclerview so that it flys in from the bottom of the screen.
latestPostRecyclerview
? –
Housebreaking Create this method into your recyclerview Adapter
private void setZoomInAnimation(View view) {
Animation zoomIn = AnimationUtils.loadAnimation(context, R.anim.zoomin);// animation file
view.startAnimation(zoomIn);
}
And finally add this line of code in onBindViewHolder
setZoomInAnimation(holder.itemView);
In 2019, I would suggest putting all the item animations into the ItemAnimator.
Let's start with declaring the animator in the recycler-view:
with(view.recycler_view) {
adapter = Adapter()
itemAnimator = CustomAnimator()
}
Declare the custom animator then,
class CustomAnimator() : DefaultItemAnimator() {
override fun animateAppearance(
holder: RecyclerView.ViewHolder,
preInfo: ItemHolderInfo?,
postInfo: ItemHolderInfo): Boolean{} // declare what happens when a item appears on the recycler view
override fun animatePersistence(
holder: RecyclerView.ViewHolder,
preInfo: ItemHolderInfo,
postInfo: ItemHolderInfo): Boolean {} // declare animation for items that persist in a recycler view even when the items change
}
Similar to the ones above there is one for disappearance animateDisappearance
, for add animateAdd
, for change animateChange
and move animateMove
.
One important point would be to call the correct animation-dispatchers inside them.
I think, is better to use it like this: (in RecyclerView adapter override just a one method)
override fun onViewAttachedToWindow(holder: ViewHolder) {
super.onViewAttachedToWindow(holder)
setBindAnimation(holder)
}
If You want every attach animation there in RV.
Just extends your Adapter like below
public class RankingAdapter extends AnimatedRecyclerView<RankingAdapter.ViewHolder>
And add super method to onBindViewHolder
@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
super.onBindViewHolder(holder, position);
It's automate way to create animated adapter like "Basheer AL-MOMANI"
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.ScaleAnimation;
import java.util.Random;
/**
* Created by eliaszkubala on 24.02.2017.
*/
public class AnimatedRecyclerView<T extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<T> {
@Override
public T onCreateViewHolder(ViewGroup parent, int viewType) {
return null;
}
@Override
public void onBindViewHolder(T holder, int position) {
setAnimation(holder.itemView, position);
}
@Override
public int getItemCount() {
return 0;
}
protected int mLastPosition = -1;
protected void setAnimation(View viewToAnimate, int position) {
if (position > mLastPosition) {
ScaleAnimation anim = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
anim.setDuration(new Random().nextInt(501));//to make duration random number between [0,501)
viewToAnimate.startAnimation(anim);
mLastPosition = position;
}
}
}
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