RecyclerView的LayoutManager库

依赖如下：

maven { url 'https://jitpack.io' }

compile 'com.github.DingMouRen:LayoutManagerGroup:643fb71c8e'

1：EchelonLayoutManager(梯形布局)，示例代码如下(注意看下备注)：

public class CeShi extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ArrayList<String> arrayList;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ceshi);
        recyclerView = findViewById(R.id.recycler);
        arrayList = new ArrayList<>();
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        EchelonLayoutManager echelonLayoutManager = new EchelonLayoutManager(this);
        Log.d("CeShi", "echelonLayoutManager.getVerticalSpace():" + echelonLayoutManager.getVerticalSpace());
        //如果getVerticalSpace方法得到的值为0，那么就会出现java.lang.ArithmeticException: divide by zero异常，也就是除数不能为0异常，看源码可知
        //在EchelonLayoutManager源码的layoutChild方法中要除getVerticalSpace，所以RecyclerView的layout_height属性不能为wrap_content,不然会报错，可以是
        //match_parent或者是具体的数值。
        recyclerView.setLayoutManager(echelonLayoutManager);
        recyclerView.setAdapter(new ShiPeiQi());
    }

    class ShiPeiQi extends RecyclerView.Adapter<ShiTu> {
        @NonNull
        @Override
        public ShiTu onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            ShiTu shiTu = new ShiTu(LayoutInflater.from(CeShi.this).inflate(R.layout.item, null));
            return shiTu;
        }

        @Override
        public void onBindViewHolder(@NonNull ShiTu holder, int position) {
            holder.textView.setText(arrayList.get(position) + position);
        }

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

    public class ShiTu extends RecyclerView.ViewHolder {
        private TextView textView;
        private ImageView imageView;

        ShiTu(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.textView);
            imageView = itemView.findViewById(R.id.imageview);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/lin"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

2：SkidRightLayoutManager(右滑布局)，示例代码如下(内容和上面一样，就该了两行代码)：

...
SkidRightLayoutManager skidRightLayoutManager = new SkidRightLayoutManager(1.5f, 0.85f);
recyclerView.setLayoutManager(skidRightLayoutManager);
...

3：SlideLayoutManager(滑动布局)，示例代码如下

public class CeShi extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ArrayList<String> arrayList;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ceshi);
        recyclerView = findViewById(R.id.recycler);
        arrayList = new ArrayList<>();
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        ShiPeiQi shiPeiQi=new ShiPeiQi();
        ItemTouchHelperCallback<String> itemTouchHelperCallback=new ItemTouchHelperCallback<String>(shiPeiQi,arrayList);
        itemTouchHelperCallback.setOnSlideListener(new OnSlideListener<String>() {
            @Override
            public void onSliding(RecyclerView.ViewHolder viewHolder, float ratio, int direction) {
                if (direction == ItemConfig.SLIDING_LEFT) {
                } else if (direction == ItemConfig.SLIDING_RIGHT) {
                }
            }

            @Override
            public void onSlided(RecyclerView.ViewHolder viewHolder, String o, int direction) {
                if (direction == ItemConfig.SLIDED_LEFT) {
                    Toast.makeText(CeShi.this, "不喜欢", Toast.LENGTH_SHORT).show();
                } else if (direction == ItemConfig.SLIDED_RIGHT) {
                    Toast.makeText(CeShi.this, "喜欢", Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onClear() {
                Toast.makeText(CeShi.this, "没数据了", Toast.LENGTH_SHORT).show();
            }
        });
        ItemTouchHelper itemTouchHelper=new ItemTouchHelper(itemTouchHelperCallback);
        SlideLayoutManager slideLayoutManager = new SlideLayoutManager(recyclerView,itemTouchHelper);
        itemTouchHelper.attachToRecyclerView(recyclerView);
        recyclerView.setLayoutManager(slideLayoutManager);
        recyclerView.setAdapter(shiPeiQi);
    }

    class ShiPeiQi extends RecyclerView.Adapter<ShiTu> {
        @NonNull
        @Override
        public ShiTu onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            ShiTu shiTu = new ShiTu(LayoutInflater.from(CeShi.this).inflate(R.layout.item, null));
            return shiTu;
        }

        @Override
        public void onBindViewHolder(@NonNull ShiTu holder, int position) {
            holder.textView.setText(arrayList.get(position) + position);
        }

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

    public class ShiTu extends RecyclerView.ViewHolder {
        private TextView textView;
        private ImageView imageView;

        ShiTu(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.textView);
            imageView = itemView.findViewById(R.id.imageview);
        }
    }
}

4：BannerLayoutManager(横幅布局)，示例代码如下

public class CeShi extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ArrayList<String> arrayList;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ceshi);
        recyclerView = findViewById(R.id.recycler);
        arrayList = new ArrayList<>();
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        arrayList.add("第");
        BannerLayoutManager bannerLayoutManager = new BannerLayoutManager(this,recyclerView,4, OrientationHelper.VERTICAL);
        bannerLayoutManager.setTimeSmooth(500f);
        recyclerView.setLayoutManager(bannerLayoutManager);
        recyclerView.setAdapter(new ShiPeiQi());
    }

    class ShiPeiQi extends RecyclerView.Adapter<ShiTu> {
        @NonNull
        @Override
        public ShiTu onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            ShiTu shiTu = new ShiTu(LayoutInflater.from(CeShi.this).inflate(R.layout.item, null));
            return shiTu;
        }

        @Override
        public void onBindViewHolder(@NonNull ShiTu holder, int position) {
            holder.textView.setText(arrayList.get(position%8) + position);//这里需要取余，不然arrayList中没有无穷个数据。
        }

        @Override
        public int getItemCount() {
            return Integer.MAX_VALUE;//这里只有是无穷大，item才能不停的滚动
        }
    }

    public class ShiTu extends RecyclerView.ViewHolder {
        private TextView textView;
        private ImageView imageView;

        ShiTu(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.textView);
            imageView = itemView.findViewById(R.id.imageview);
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/lin"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="match_parent"
        android:layout_height="?actionBarSize"/><!--这里的layout_height的值不能是match_parent和wrap_content，否则item滚动不起来，得是具体的数值才行-->

</LinearLayout>

5：ViewPagerLayoutManager(视图页布局)，示例代码如下

...
ViewPagerLayoutManager viewPagerLayoutManager = new ViewPagerLayoutManager(this, OrientationHelper.VERTICAL);
        viewPagerLayoutManager.setOnViewPagerListener(new OnViewPagerListener() {
            @Override
            public void onPageRelease(boolean b, int i) {
                Toast.makeText(CeShi.this, "页面划出去了", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onPageSelected(int i, boolean b) {
                Toast.makeText(CeShi.this, "页面选择住了", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onLayoutComplete() {

            }
        });
        recyclerView.setLayoutManager(viewPagerLayoutManager);
...

github地址如下：
https://github.com/DingMouRen/LayoutManagerGroup