Android Open Source - RecyclerViewLib From Top Item Animator

From Project

License

The source code is released under:

Apache License

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Java Source Code

package com.twotoasters.anim;
//www  . j  a va  2  s.c  o  m
import android.graphics.Point;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPropertyAnimatorCompat;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.OvershootInterpolator;

import com.twotoasters.android.support.v7.widget.RecyclerView.ViewHolder;
import com.twotoasters.utils.DisplayUtils;

public class FromTopItemAnimator extends PendingItemAnimator {

    public FromTopItemAnimator() {
        setMoveDuration(200);
        setRemoveDuration(500);
        setAddDuration(300);
    }

    @Override
    protected boolean prepHolderForAnimateRemove(ViewHolder holder) {
        return true;
    }

    @Override
    protected ViewPropertyAnimatorCompat animateRemoveImpl(ViewHolder holder) {
        Point screen = DisplayUtils.getScreenDimensions(holder.itemView.getContext());
        int top = holder.itemView.getTop();
        return ViewCompat.animate(holder.itemView)
                .rotation(80)
                .translationY(screen.y - top)
                .setInterpolator(new AccelerateInterpolator());
    }

    @Override
    protected void onRemoveCanceled(ViewHolder holder) {
        ViewCompat.setTranslationY(holder.itemView, 0);
    }

    @Override
    protected boolean prepHolderForAnimateAdd(ViewHolder holder) {
        int bottom = holder.itemView.getBottom();
        ViewCompat.setTranslationY(holder.itemView, - bottom);
        return true;
    }

    @Override
    protected ViewPropertyAnimatorCompat animateAddImpl(ViewHolder holder) {
        return ViewCompat.animate(holder.itemView)
                .translationY(0)
                .setInterpolator(new OvershootInterpolator());
    }

    @Override
    protected void onAddCanceled(ViewHolder holder) {
        ViewCompat.setTranslationY(holder.itemView, 0);
    }
}

Java Source Code List