添加文档

Android/Demo1/RightGradual.java

@@ -1,4 +1,3 @@
-package com.yunbao.live.custom;
 
 import android.graphics.Canvas;
 import android.graphics.Color;
@@ -12,8 +11,10 @@ import android.graphics.Xfermode;
 import androidx.recyclerview.widget.RecyclerView;
 
 /**
- * Created by cxf on 2018/1/27.
  * RecyclerView右側渐变的itemDecoration
+ * 渐变参考文档：https://blog.csdn.net/u010126792/article/details/85237085
+ * 半透明则是由0→黑的渐变效果
+ * 使用方法： RecyclerView.addItemDecoration(new RightGradual());
  */
 
 public class RightGradual extends RecyclerView.ItemDecoration {