Baserecyclerviewadapterhelper: addItemDecoration作为一条分割线，上啦加载的时候，每个item间分割线会移动，然后又会复原的问题

[Anayuta]

[1109993488]

是不是你的分割线有问题

[Anayuta]

@1109993488 分割线没有问题吧。
public class CommentDecoration extends RecyclerView.ItemDecoration {
private Context mContext;
private Drawable mDivider;
private int mOrientation;

public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;

//我们通过获取系统属性中的listDivider来添加，在系统中的AppTheme中设置
public static final int[] ATRRS  = new int[]{
        android.R.attr.listDivider
};

public CommentDecoration(Context context, int orientation) {
    this.mContext = context;
    final TypedArray ta = context.obtainStyledAttributes(ATRRS);
    this.mDivider = ta.getDrawable(0);
    ta.recycle();
    setOrientation(orientation);
}

//设置屏幕的方向
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, RecyclerView.State state) {
    if (mOrientation == HORIZONTAL_LIST){
        drawVerticalLine(c, parent, state);
    }else {
        drawHorizontalLine(c, parent, state);

    }
}

//画横线, 这里的parent其实是显示在屏幕显示的这部分
public void drawHorizontalLine(Canvas c, RecyclerView parent, RecyclerView.State state){
    int left = parent.getPaddingLeft();
    int right = parent.getWidth() - parent.getPaddingRight();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++){
        final View child = parent.getChildAt(i);

        //获得child的布局信息
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)child.getLayoutParams();
        final int top = child.getBottom() + params.bottomMargin;
        final int bottom = top + mDivider.getIntrinsicHeight();

        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

//画竖线
public void drawVerticalLine(Canvas c, RecyclerView parent, RecyclerView.State state){
    int top = parent.getPaddingTop();
    int bottom = parent.getHeight() - parent.getPaddingBottom();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++){
        final View child = parent.getChildAt(i);

        //获得child的布局信息
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams)child.getLayoutParams();
        final int left = child.getRight() + params.rightMargin;
        final int right = left + mDivider.getIntrinsicWidth();

        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
    if(mOrientation == HORIZONTAL_LIST){
        //画横线，就是往下偏移一个分割线的高度
        outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
    }else {
        //画竖线，就是往右偏移一个分割线的宽度
        outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
    }

// outRect.set(0, 0, 0, mDivider.getIntrinsicWidth());
}
}

[1109993488]

分割线怎么移动的? 你在demo里加试试，

[Anayuta]

@1109993488 ~~! 之前发现这问题，赶进度就直接删了。

[1109993488]

无法复现就不知道怎么造成的，如果还有问题最好提供复现方法方便解决

[Anayuta]

可以复现，改天我提供出来吧

[1109993488]

ok

[Jessiqi]

遇到同样的问题

[Anayuta]

@Jessiqi 你看看你加载完成后数据添加，我的是因为loadMoreComplete后才设置enabled，把代码位置改了下就没那问题了。
mSwipeRefreshLayout.setEnabled(true);
mBaseRefreshAdapter.addData(data);
mBaseRefreshAdapter.loadMoreComplete();

[Jessiqi]

@Anayuta 谢谢，解决了我的bug,我上午纠结了好久，非常感谢

[cjcj125125]

看完了你们的解决方案，我这里还是一样呀，第一次进入是没问题的，但是下拉一次，Decoration分割线中间的宽度会变大，再下拉刷新一次又变大，我是recyclerview嵌套recyclerview，求教大佬们指点，谢谢

[ericwangjp]

同样遇到recyclerview嵌套recyclerview刷新内层分割线变大的问题，目前无解