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import android.support.v4.view.ViewCompat; | |
import android.support.v4.view.ViewPropertyAnimatorCompat; | |
import android.support.v7.widget.RecyclerView; | |
import android.view.View; | |
import com.mikepenz.itemanimators.DefaultAnimator; | |
public class ItemAnimator extends DefaultAnimator<ItemAnimator> { | |
public boolean useAnimation = true; | |
public int offset = 0; | |
public void addAnimationPrepare(RecyclerView.ViewHolder holder) { | |
if(useAnimation) { | |
ViewCompat.setTranslationY(holder.itemView, holder.itemView.getHeight() * 0.4f); | |
ViewCompat.setAlpha(holder.itemView, 0.0f); | |
} | |
} | |
public ViewPropertyAnimatorCompat addAnimation(final RecyclerView.ViewHolder holder) { | |
holder.itemView.setLayerType(View.LAYER_TYPE_HARDWARE, null); | |
int off = holder.getAdapterPosition()-offset < 0 ? holder.getLayoutPosition() : holder.getAdapterPosition()-offset; | |
return ViewCompat.animate(holder.itemView) | |
.alpha(1) | |
.translationY(0) | |
.setDuration(useAnimation ? getAddDuration() + 30 * off : 0) | |
.setInterpolator(getInterpolator()) | |
.setStartDelay(useAnimation ? (off) * 15L : 0); | |
} | |
public void addAnimationCleanup(RecyclerView.ViewHolder holder) { | |
ViewCompat.setAlpha(holder.itemView, 1); | |
} | |
public ViewPropertyAnimatorCompat removeAnimation(final RecyclerView.ViewHolder holder) { | |
holder.itemView.setLayerType(View.LAYER_TYPE_HARDWARE, null); | |
return ViewCompat.animate(holder.itemView) | |
.alpha(0) | |
.setDuration(useAnimation ? getRemoveDuration() : 0) | |
.setInterpolator(getInterpolator()) | |
.setStartDelay(0); | |
} | |
public void removeAnimationCleanup(RecyclerView.ViewHolder holder) { | |
ViewCompat.setAlpha(holder.itemView, 1); | |
} | |
public ViewPropertyAnimatorCompat changeOldAnimation(RecyclerView.ViewHolder holder, ChangeInfo changeInfo) { | |
return ViewCompat.animate(holder.itemView).setDuration(getChangeDuration()).alpha(0).translationX(changeInfo.toX - changeInfo.fromX).translationY(changeInfo.toY - changeInfo.fromY).setInterpolator(getInterpolator()); | |
} | |
public ViewPropertyAnimatorCompat changeNewAnimation(RecyclerView.ViewHolder holder) { | |
return ViewCompat.animate(holder.itemView).translationX(0).translationY(0).setDuration(getChangeDuration()).alpha(1).setInterpolator(getInterpolator()); | |
} | |
public void changeAnimationCleanup(RecyclerView.ViewHolder holder) { | |
ViewCompat.setAlpha(holder.itemView, 1); | |
} | |
} |
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Thanks for this! Looks cute, especially with
DecelerateInterpolator
and 300 ms animation duration.The class is called
ItemAnimator
, but gist called wrong —ItemAdapter.java
.