RecyclerView Animators
RecyclerView Animators is an Android library that allows developers to easily create RecyclerView with animations.
Please feel free to use this.
Features
- Animate addition and removal of
ItemAnimator - Appearance animations for items in
RecyclerView.Adapter
Demo
ItemAnimator
Adapters
How do I use it?
Setup
Gradle
On your module's build.gradle file add this implementation statement to the dependencies section:
dependencies {
// Kotlin
implementation 'jp.wasabeef:recyclerview-animators:4.0.2'
}
Also make sure that the repositories section includes not only "mavenCentral()" but also a maven section with the "google()" endpoint.
repositories {
google()
mavenCentral()
jcenter()
}
ItemAnimator
Step 1
Set RecyclerView ItemAnimator.
val recyclerView = findViewById<RecyclerView>(R.id.list)
recyclerView.itemAnimator = SlideInLeftAnimator()
val recyclerView = findViewById<RecyclerView>(R.id.list)
recyclerView.itemAnimator = SlideInUpAnimator(OvershootInterpolator(1f))
Step 2
Please use the following
notifyItemChanged(int)
notifyItemInserted(int)
notifyItemRemoved(int)
notifyItemRangeChanged(int, int)
notifyItemRangeInserted(int, int)
notifyItemRangeRemoved(int, int)
If you want your animations to work, do not rely on calling
notifyDataSetChanged(); as it is the RecyclerView's default behavior, animations are not triggered to start inside this method.
fun remove(position: Int) {
dataSet.removeAt(position)
notifyItemRemoved(position)
}
fun add(text: String, position: Int) {
dataSet.add(position, text)
notifyItemInserted(position)
}
Advanced Step 3
You can change the durations.
recyclerView.itemAnimator?.apply {
addDuration = 1000
removeDuration = 100
moveDuration = 1000
changeDuration = 100
}
Advanced Step 4
Change the interpolator.
recyclerView.itemAnimator = SlideInLeftAnimator().apply {
setInterpolator(OvershootInterpolator())
}
Advanced Step 5
By implementing AnimateViewHolder, you can override preset animation. So, custom animation can be set depending on view holder.
class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView), AnimateViewHolder {
override fun preAnimateRemoveImpl(holder: RecyclerView.ViewHolder) {
// do something
}
override fun animateRemoveImpl(holder: RecyclerView.ViewHolder, listener: ViewPropertyAnimatorListener) {
itemView.animate().apply {
translationY(-itemView.height * 0.3f)
alpha(0f)
duration = 300
setListener(listener)
}.start()
}
override fun preAnimateAddImpl(holder: RecyclerView.ViewHolder) {
itemView.setTranslationY(-itemView.height * 0.3f)
itemView.setAlpha(0f)
}
override fun animateAddImpl(holder: RecyclerView.ViewHolder, listener: ViewPropertyAnimatorListener) {
itemView.animate().apply {
translationY(0f)
alpha(1f)
duration = 300
setListener(listener)
}.start()
}
}
Animators
Cool
LandingAnimator
Scale
ScaleInAnimator, ScaleInTopAnimator, ScaleInBottomAnimator
ScaleInLeftAnimator, ScaleInRightAnimator
Fade
FadeInAnimator, FadeInDownAnimator, FadeInUpAnimator
FadeInLeftAnimator, FadeInRightAnimator
Flip
FlipInTopXAnimator, FlipInBottomXAnimator
FlipInLeftYAnimator, FlipInRightYAnimator
Slide
SlideInLeftAnimator, SlideInRightAnimator, OvershootInLeftAnimator, OvershootInRightAnimator
SlideInUpAnimator, SlideInDownAnimator
RecyclerView.Adapter
Step 1
Set RecyclerView ItemAnimator.
val recyclerView = findViewById<RecyclerView>(R.id.list)
recyclerView.adapter = AlphaInAnimationAdapter(MyAdapter())
Java
RecyclerView recyclerView = findViewById(R.id.list);
recyclerView.setAdapter(new AlphaInAnimationAdapter(MyAdapter());
Advanced Step 2
recyclerView.adapter = AlphaInAnimationAdapter(MyAdapter()).apply {
// Change the durations.
setDuration(1000)
// Change the interpolator.
setInterpolator(vershootInterpolator())
// Disable the first scroll mode.
setFirstOnly(false)
}
Java
AlphaInAnimationAdapter alphaInAnimationAdapter = new AlphaInAnimationAdapter(new MyAdapter());
alphaInAnimationAdapter.setDuration(1000);
alphaInAnimationAdapter.setInterpolator(new OvershootInterpolator());
alphaInAnimationAdapter.setFirstOnly(false);
Advanced Step 3
Multiple Animations
val alphaAdapter = AlphaInAnimationAdapter(MyAdapter())
recyclerView.adapter = ScaleInAnimationAdapter(alphaAdapter)
Java
recyclerView.setAdapter(new ScaleInAnimationAdapter(alphaInAnimationAdapter));
Adapters
Alpha
AlphaInAnimationAdapter
Scale
ScaleInAnimationAdapter
Slide
SlideInBottomAnimationAdapter
SlideInRightAnimationAdapter, SlideInLeftAnimationAdapter
Applications using RecyclerView Animators
Please ping me or send a pull request if you would like to be added here.
| Icon | Application |
|---|---|
 |
Ameba Ownd |
 |
QuitNow! |
 |
AbemaTV |
 |
CL |
Developed By
Daichi Furiya (Wasabeef) - [email protected]
Contributions
Any contributions are welcome!
Contributers
Thanks
- Inspired by
AndroidViewAnimationsin daimajia.
License
Copyright 2020 Daichi Furiya / Wasabeef
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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