RecyclerView封装通用的方法

对RecyclerView进行封装

封装了点击事件，长按点击事件，直接CV大法即可

public class MainActivity extends AppCompatActivity {
    private RecyclerView mRecyclerView;
    private List<String> mData = new ArrayList<>();
    private DragSwipeAdapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mRecyclerView = (RecyclerView) findViewById(R.id.rv);
        init();
        addListener();
    }

    private void init() {
        for (int i = 0; i < 20; i++) {
            mData.add("item" + i);
        }

        mAdapter = new DragSwipeAdapter(this, mData);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        mRecyclerView.setAdapter(mAdapter);
    }

    private void addListener() {
        mAdapter.setOnItemClickListener(new BaseAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(View view, int position) {
                Toast.makeText(MainActivity.this, "click" + position, Toast.LENGTH_SHORT).show();
            }
        });
        mAdapter.setonLongItemClickListener(new BaseAdapter.onLongItemClickListener() {
            @Override
            public void onLongItemClick(View view, int postion) {
                Toast.makeText(MainActivity.this, "long" + postion, Toast.LENGTH_SHORT).show();

            }
        });
    }
}

public class DragSwipeAdapter extends BaseAdapter<String> {
    public DragSwipeAdapter(Context mContext, List<String> mDatas) {
        super(mContext, mDatas);
    }

    @Override
    protected int generateLayoutId() {
        return R.layout.item;
    }

    @Override
    protected void convert(Context mContext, BaseViewHolder holder, String s) {
        holder.setText(R.id.tv,s);
    }
}

public abstract class BaseAdapter<T> extends RecyclerView.Adapter<BaseViewHolder> {
    private Context                 mContext;
    private List<T>                 mDatas;
    private int                     mLayoutId;
    private OnItemClickListener     mItemClickListener;
    private onLongItemClickListener mLongItemClickListener;

    public BaseAdapter(Context mContext, List<T> mDatas) {
        this.mContext = mContext;
        this.mDatas = mDatas;
        this.mLayoutId = generateLayoutId();
    }

    /**
     * 交给子类去实现，生成布局
     * @return
     */
    protected abstract int generateLayoutId();

    public void updateData(List<T> data) {
        mDatas.clear();
        mDatas.addAll(data);
        notifyDataSetChanged();
    }

    public void addAll(List<T> data) {
        mDatas.addAll(data);
        notifyDataSetChanged();
    }


    @Override
    public BaseViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(mContext).inflate(mLayoutId, parent, false);
        BaseViewHolder holder = new BaseViewHolder(view);
        return holder;
    }

    @Override
    public int getItemCount() {
        return mDatas.size();
    }


    @Override
    public void onBindViewHolder(BaseViewHolder holder, final int position) {
        convert(mContext, holder, mDatas.get(position));
        if (mItemClickListener != null) {
            holder.mItemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    mItemClickListener.onItemClick(v, position);
                }
            });
        }
        if (mLongItemClickListener != null) {
            holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    mLongItemClickListener.onLongItemClick(v, position);
                    return true;
                }
            });
        }
    }

    protected abstract void convert(Context mContext, BaseViewHolder holder, T t);


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

    public    interface onLongItemClickListener {
        void onLongItemClick(View view, int postion);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        this.mItemClickListener = listener;
    }

    public void setonLongItemClickListener(onLongItemClickListener listener) {
        this.mLongItemClickListener = listener;
    }
}

public class BaseViewHolder extends RecyclerView.ViewHolder {
    SparseArray<View> mViews;
    View              mItemView;

    public BaseViewHolder(View itemView) {
        super(itemView);
        mItemView = itemView;
        mViews = new SparseArray<>();
    }


    public <T extends View> T getView(int viewId) {
        View view = mViews.get(viewId);
        if (view == null) {
            view = mItemView.findViewById(viewId);
            mViews.put(viewId, view);
        }
        return (T) view;
    }

    public BaseViewHolder setText(int viewId, int resId) {
        TextView textView = getView(viewId);
        textView.setText(resId);
        return this;
    }


    public BaseViewHolder setText(int viewId, String text) {
        TextView textView = getView(viewId);
        textView.setText(text);
        return this;
    }

    public BaseViewHolder setText(int viewId, SpannableStringBuilder text) {
        TextView textView = getView(viewId);
        textView.setText(text);
        return this;
    }

    public BaseViewHolder setImageResource(int viewId, int resId) {
        ImageView view = getView(viewId);
        view.setImageResource(resId);
        return this;
    }

    public BaseViewHolder setImageBitmap(int viewId, Bitmap bitmap) {
        ImageView view = getView(viewId);
        view.setImageBitmap(bitmap);
        return this;
    }

    public BaseViewHolder setImageDrawable(int viewId, Drawable drawable) {
        ImageView view = getView(viewId);
        view.setImageDrawable(drawable);
        return this;
    }

    public BaseViewHolder setBackgroundColor(int viewId, int color) {
        View view = getView(viewId);
        view.setBackgroundColor(color);
        return this;
    }

    public BaseViewHolder setBackgroundResource(int viewId, int backgroundRes) {
        View view = getView(viewId);
        view.setBackgroundResource(backgroundRes);
        return this;
    }

    public BaseViewHolder setTextColor(int viewId, int textColor) {
        TextView view = getView(viewId);
        view.setTextColor(textColor);
        return this;
    }


    @SuppressLint("NewApi")
    public BaseViewHolder setAlpha(int viewId, float value) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getView(viewId).setAlpha(value);
        } else {
            // Pre-honeycomb hack to set Alpha value
            AlphaAnimation alpha = new AlphaAnimation(value, value);
            alpha.setDuration(0);
            alpha.setFillAfter(true);
            getView(viewId).startAnimation(alpha);
        }
        return this;
    }

    public BaseViewHolder setVisible(int viewId, boolean visible) {
        View view = getView(viewId);
        view.setVisibility(visible ? View.VISIBLE : View.GONE);
        return this;
    }


    public BaseViewHolder setTag(int viewId, Object tag) {
        View view = getView(viewId);
        view.setTag(tag);
        return this;
    }

    public BaseViewHolder setTag(int viewId, int key, Object tag) {
        View view = getView(viewId);
        view.setTag(key, tag);
        return this;
    }

    public BaseViewHolder setChecked(int viewId, boolean checked) {
        Checkable view = (Checkable) getView(viewId);
        view.setChecked(checked);
        return this;
    }

    /**
     * 关于事件监听
     */
    public BaseViewHolder setOnClickListener(int viewId, View.OnClickListener listener) {

        View view = getView(viewId);
        view.setOnClickListener(listener);
        return this;
    }

    public BaseViewHolder setOnTouchListener(int viewId, View.OnTouchListener listener) {
        View view = getView(viewId);
        view.setOnTouchListener(listener);
        return this;
    }

    public BaseViewHolder setOnLongClickListener(int viewId, View.OnLongClickListener listener) {
        View view = getView(viewId);
        view.setOnLongClickListener(listener);
        return this;
    }
}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
        android:layoutAnimation="@anim/layoutanimation"
        android:id="@+id/rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v7.widget.RecyclerView>
</LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_margin="10dp"
    android:id="@+id/cardView"
    app:cardElevation="5dp"
    app:cardCornerRadius="5dp">

    <TextView
        android:textColor="@android:color/white"
        android:background="@android:color/holo_blue_light"
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:gravity="center" />
</android.support.v7.widget.CardView>

layoutanimation.xml

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
    android:animationOrder="normal"
    android:animation="@anim/load_anim"
    android:delay="0.5">
</layoutAnimation>

load_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="300">
    <alpha
        android:fromAlpha="0"
        android:toAlpha="1" />
    <translate
        android:fromYDelta="800"
        android:toYDelta="0" />
</set>