AnimRecyclerViewAdapter.java

package com.xiecc.seeWeather.component;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import com.xiecc.seeWeather.R;

/**
 * Created by bruce on 2016-04-30.
 * Project: newsnow
 */

/**
 * Thanks for drakeet/Meizhi
 * <p>
 * https://github.com/drakeet/Meizhi/blob/master/app%2Fsrc%2Fmain%2Fjava%2Fme%2Fdrakeet%2Fmeizhi%2Fui%2Fadapter%2FAnimRecyclerViewAdapter.java
 */
public class AnimRecyclerViewAdapter<T extends RecyclerView.ViewHolder>
        extends RecyclerView.Adapter<T> {

    private static final int DELAY = 138;
    private int mLastPosition = -1;


    @Override
    public T onCreateViewHolder(ViewGroup parent, int viewType) {
        return null;
    }


    @Override
    public void onBindViewHolder(T holder, int position) {
    }


    @Override
    public int getItemCount() {
        return 0;
    }


    public void showItemAnim(final View view, final int position) {
        Context context = view.getContext();
        if (position > mLastPosition) {
            view.setAlpha(0);
            view.postDelayed(() -> {
                Animation animation = AnimationUtils.loadAnimation(context,
                        R.anim.slide_in_right);
                animation.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {
                        view.setAlpha(1);
                    }


                    @Override
                    public void onAnimationEnd(Animation animation) {
                    }


                    @Override
                    public void onAnimationRepeat(Animation animation) {
                    }
                });
                view.startAnimation(animation);
            }, DELAY * position);
            mLastPosition = position;
        }
    }
}