RecyclerView消除底部分割线的方法

概述最近遇到一个问题，用RecyclerView显示数据，纵向列表显示，添加默认分割线。

最近遇到一个问题，用RecyclerVIEw显示数据，纵向列表显示，添加默认分割线。

问题是：底部也会显示分割线，这很影响美观。

怎么解决这个问题呢？我想了很多办法，毫无头绪。。。

最后，查看默认分割线的类divIDerItemdecoration的源码：

public class divIDerItemdecoration extends Itemdecoration {  private static final int[] ATTRS = new int[]{16843284};  public static final int HORIZONTAL_List = 0;  public static final int VERTICAL_List = 1;  private Drawable mdivIDer;  private int mOrIEntation;  public divIDerItemdecoration(Context context,int orIEntation) {    TypedArray a = context.obtainStyledAttributes(ATTRS);    this.mdivIDer = a.getDrawable(0);    a.recycle();    this.setorIEntation(orIEntation);  }  public voID setorIEntation(int orIEntation) {    if(orIEntation != 0 && orIEntation != 1) {      throw new IllegalArgumentException("invalID orIEntation");    } else {      this.mOrIEntation = orIEntation;    }  }  public voID onDraw(Canvas c,RecyclerVIEw parent) {    if(this.mOrIEntation == 1) {      this.drawVertical(c,parent);    } else {      this.drawHorizontal(c,parent);    }  }  public voID drawVertical(Canvas c,RecyclerVIEw parent) {    int left = parent.getpaddingleft();    int right = parent.getWIDth() - parent.getpaddingRight();    int childCount = parent.getChildCount();    for(int i = 0; i < childCount; ++i) {      VIEw child = parent.getChildAt(i);      LayoutParams params = (LayoutParams)child.getLayoutParams();      int top = child.getBottom() + params.bottommargin;      int bottom = top + this.mdivIDer.getIntrinsicHeight();      this.mdivIDer.setBounds(left,top,right,bottom);      this.mdivIDer.draw(c);    }  }  public voID drawHorizontal(Canvas c,RecyclerVIEw parent) {    int top = parent.getpaddingtop();    int bottom = parent.getHeight() - parent.getpaddingBottom();    int childCount = parent.getChildCount();    for(int i = 0; i < childCount; ++i) {      VIEw child = parent.getChildAt(i);      LayoutParams params = (LayoutParams)child.getLayoutParams();      int left = child.getRight() + params.rightmargin;      int right = left + this.mdivIDer.getIntrinsicHeight();      this.mdivIDer.setBounds(left,bottom);      this.mdivIDer.draw(c);    }  }  public voID getItemOffsets(Rect outRect,int itemposition,RecyclerVIEw parent) {    if(this.mOrIEntation == 1) {      outRect.set(0,this.mdivIDer.getIntrinsicHeight());    } else {      outRect.set(0,this.mdivIDer.getIntrinsicWIDth(),0);    }  }}

因为我用到的是垂直列表，用到的是红色字体处的代码：

 public voID drawVertical(Canvas c,bottom);      this.mdivIDer.draw(c);    }  }

从代码中很容易看出只要修改for循环中的内容就可去掉底部的分割线：

 public voID drawVertical(Canvas c,RecyclerVIEw parent) {    int left = parent.getpaddingleft();    int right = parent.getWIDth() - parent.getpaddingRight();    int childCount = parent.getChildCount();    for(int i = 0; i < childCount-1; ++i) {      VIEw child = parent.getChildAt(i);      LayoutParams params = (LayoutParams)child.getLayoutParams();      int top = child.getBottom() + params.bottommargin;      int bottom = top + this.mdivIDer.getIntrinsicHeight();      this.mdivIDer.setBounds(left,bottom);      this.mdivIDer.draw(c);    }  }

因为这个类我们不能直接修改，所以我们可以自定义一个类，修改相应内容，

添加分割线的时候，使用自定义类。

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