1RecycleView Adapter 基本使用：

包括多種itemType，繫結事件，

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.
 
LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.request.RequestOptions;
import com.yiche.autoreport.R;
import com.yiche.autoreport.model.business.industry.
 
IndustryNewsItem;
import com.yiche.autoreport.utils.V;

import java.util.ArrayList;

/**
 * Created by lidongxiu on 2018/6/19.
 */

public class IndustryInsightNewsAdapter extends RecyclerView.Adapter<IndustryInsightNewsAdapter.NewsItemHolder> {
    private Context mContext;
    private LayoutInflater mInflater;
 

    private OnItemClickListener mClickListener;
    private OnChildClickListener mChildClickListener;
    private ArrayList<IndustryNewsItem> mDataList;

    public interface OnItemClickListener {
        void onItemClicked(int position, View view);
    }

    public interface OnChildClickListener {
        void onChildClicked(int position, View view);
    }
    public void setClickListener(OnItemClickListener mClickListener) {
        this.mClickListener = mClickListener;
    }

    public void setChildClickListener(OnChildClickListener mChildClickListener) {
        this.mChildClickListener = mChildClickListener;
    }

    public IndustryInsightNewsAdapter(Context context, ArrayList<IndustryNewsItem> dataList) {
        mContext = context;
        mInflater = LayoutInflater.from(mContext);
        mDataList = dataList;
    }

    @Override
    public NewsItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        NewsItemHolder viewHolder = null;
        switch (viewType) {
            case IndustryNewsItem.NOIMAGE:
                viewHolder = new TitleItemHolder(mInflater.inflate(R.layout.industryinsight_noimage_layout_white, parent, false));
                break;
            case IndustryNewsItem.ONEIMAGE:
                viewHolder = new BodyItemHolder(mInflater.inflate(R.layout.industrynews_oneimage_layout_white, parent, false));
                break;
        }
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(NewsItemHolder holder, int position) {
        holder.setNewsItem(mDataList.get(position), position);
    }

	//多種型別itemView
    @Override
    public int getItemViewType(int position) {
        return mDataList.get(position).getType();
    }
    @Override
    public int getItemCount() {
        return mDataList == null ? 0 : mDataList.size();
    }

    public abstract class NewsItemHolder extends RecyclerView.ViewHolder {

        public NewsItemHolder(View itemView) {
            super(itemView);
        }

        public abstract void setNewsItem(IndustryNewsItem item, int position);
    }

    private class TitleItemHolder extends NewsItemHolder {

        public TextView titleDel = null;
        public ImageView notlike = null;
        public RelativeLayout mContainer = null;
        public TextView fromSource = null;
        public TextView publishData = null;

        public TitleItemHolder(View itemView) {
            super(itemView);
            titleDel = (TextView) V.$(itemView, R.id.industry_insight_news_tv);
            notlike = (ImageView) V.$(itemView, R.id.industry_insight_notlike_iv);
            mContainer = (RelativeLayout) V.$(itemView, R.id.industry_insight_noimg_container);
            fromSource = (TextView) V.$(itemView, R.id.bottom_left_original);
            publishData = (TextView) V.$(itemView, R.id.bottom_left_publishdata);
        }

        @Override
        public void setNewsItem(IndustryNewsItem item, final int position) {
            if(item != null){
                if (!TextUtils.isEmpty(item.getTitle())) {
                    titleDel.setText(item.getTitle());
                }
                if (!TextUtils.isEmpty(item.getSource())) {
                    fromSource.setText(item.getSource());
                }
                if (!TextUtils.isEmpty(item.getPublish())) {
                    publishData.setText(item.getPublish());
                }
            }

            if (mClickListener != null && mContainer != null) {
                mContainer.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mClickListener.onItemClicked(position, v);
                    }
                });
            }

            if (mChildClickListener != null && notlike != null) {
                notlike.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mChildClickListener.onChildClicked(position, v);
                    }
                });
            }
        }
    }

    private class BodyItemHolder extends NewsItemHolder {
        public TextView newsTitle = null;
        public ImageView newsPublisherAvatar = null;
        public ImageView notlike = null;
        public LinearLayout mContainer = null;
        public TextView fromSource = null;
        public TextView publishData = null;

        public BodyItemHolder(View itemView) {
            super(itemView);
            newsTitle = (TextView) V.$(itemView, R.id.industry_insight_news_tv);
            newsPublisherAvatar = (ImageView) V.$(itemView, R.id.industry_insight_news_iv);
            notlike = (ImageView) V.$(itemView, R.id.industry_insight_notlike_iv);
            mContainer = (LinearLayout) V.$(itemView, R.id.industry_insight_oneimgcontainer);
            fromSource = (TextView) V.$(itemView, R.id.bottom_left_original);
            publishData = (TextView) V.$(itemView, R.id.bottom_left_publishdata);
        }

        @Override
        public void setNewsItem(IndustryNewsItem item, final int position) {
            if (item != null){
                if (!TextUtils.isEmpty(item.getTitle())) {
                    newsTitle.setText(item.getTitle());
                }
                if (!TextUtils.isEmpty(item.getSource())) {
                    fromSource.setText(item.getSource());
                }
                if (!TextUtils.isEmpty(item.getPublish())) {
                    publishData.setText(item.getPublish());
                }
            }

            if (item != null && item.getImage() != null && item.getImage().get(0) != null) {
                try {
                    RequestOptions options = new RequestOptions()
                            .placeholder(R.drawable.splash_icon)
                            .dontAnimate()
                            .diskCacheStrategy(DiskCacheStrategy.RESOURCE);
                    Glide.with(mContext)
                            .load(item.getImage().get(0).getImg())
                            .apply(options)
                            .into(newsPublisherAvatar);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            if (mChildClickListener != null && notlike != null) {
                notlike.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mChildClickListener.onChildClicked(position, v);
                    }
                });
            }
            if (mClickListener != null && mContainer != null) {
                mContainer.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mClickListener.onItemClicked(position, v);
                    }
                });
            }
        }
    }
}

2 itemview 預設動畫關閉和設定時常

public void openDefaultAnimator() {
    this.getItemAnimator().setAddDuration(120);
    this.getItemAnimator().setChangeDuration(250);
    this.getItemAnimator().setMoveDuration(250);
    this.getItemAnimator().setRemoveDuration(120);
    ((SimpleItemAnimator) this.getItemAnimator()).setSupportsChangeAnimations(true);
}

//很多時候載入圖片閃動和動畫有關
public void closeDefaultAnimator() {
    this.getItemAnimator().setAddDuration(0);
    this.getItemAnimator().setChangeDuration(0);
    this.getItemAnimator().setMoveDuration(0);
    this.getItemAnimator().setRemoveDuration(0);
    ((SimpleItemAnimator) this.getItemAnimator()).setSupportsChangeAnimations(false);
}

3 三種佈局管理器

LinearLayoutManager 線性佈局管理器 GridLayoutManager 網格佈局管理器 StaggeredGridLayoutManager 瀑布流式佈局管理器 mRecycleView.setLayoutManager();

4 Adapter的區域性重新整理

Adapter呼叫上面的函式完成區域性重新整理。

5 移動到特定position

mRecycleView.smoothScrollToPosition(); RecycleView的smoothScrollToPosition函式只要item可見就停止滑動，所以一般無法滿足需求。 mLinearLayoutManger.scrollToPositionWithOffset(xiposition, 0); layoutManager的scrollToPositionWithOffset函式可以很好的實現滑動到特定position的需求。