android中RecyclerView自定义分割线实现

public class CustomDecoration extends RecyclerView.ItemDecoration {

 public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;

 public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;

 private Drawable mDivider;

 private int mOrientation;

 /**
  * 分割线缩进值
  */
 private int inset;

 private Paint paint;

 /**
  * @param context
  * @param orientation layout的方向
  * @param drawable  引入的drawable的ID
  * @param inset    分割线缩进值
  */
 public CustomDecoration(Context context, int orientation, int drawable, int inset) {
   mDivider = context.getResources().getDrawable(drawable);
   this.inset = inset;
   paint = new Paint();
   paint.setColor(context.getResources().getColor(R.color.white));
   paint.setStyle(Paint.Style.FILL);
   paint.setAntiAlias(true);
   setOrientation(orientation);
 }

 public void setOrientation(int orientation) {
   if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
     throw new IllegalArgumentException("invalid orientation");
   }
   mOrientation = orientation;
 }

 @Override
 public void onDraw(Canvas c, RecyclerView parent) {
   if (mOrientation == VERTICAL_LIST) {
     drawVertical(c, parent);
   } else {
     drawHorizontal(c, parent);
   }
 }

 private void drawVertical(Canvas c, RecyclerView parent) {
   final int left = parent.getPaddingLeft();
   final int right = parent.getWidth() - parent.getPaddingRight();

   final int childCount = parent.getChildCount();
   //最后一个item不画分割线
   for (int i = 0; i  0) {
       c.drawRect(left, top, right, bottom, paint);
       mDivider.setBounds(left + inset, top, right - inset, bottom);
     } else {
       mDivider.setBounds(left, top, right, bottom);
     }
     mDivider.draw(c);
   }
 }

 private void drawHorizontal(Canvas c, RecyclerView parent) {
   final int top = parent.getPaddingTop();
   final int bottom = parent.getHeight() - parent.getPaddingBottom();

   final int childCount = parent.getChildCount();
   for (int i = 0; i 

recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.addItemDecoration(new CustomDecoration(this, CustomDecoration.VERTICAL_LIST, R.drawable.divider_love, UnitHelper.dip2px(this, 15)));
recyclerView.setAdapter(adapter);

paint.setColor(Color.parseColor("#ECF0F1"));