Android RecyclerView ItemDecoration-如何为每个viewHolder绘制不同的宽度分隔符？

当前，我的分隔符仅绘制一个宽度：

如何为我的recyclerview中的每个增量位置添加额外的分隔符

这是我的装饰课：

public SimpleDivider(Context mContext, ArrayList<Integer> mDepth) {
    mDivider = ContextCompat.getDrawable(mContext, R.drawable.recycler_view_divider);
    this.mContext = mContext;
    this.mDepth = mDepth;
    dividerMargin = 15;

}

@Override
public void onDraw(@NonNull Canvas c, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {


    int top = 0;
    int bottom = parent.getHeight();

    int childCount = parent.getChildCount();
    for(int i = 0; i < childCount; ++i) {
        int right = dividerMargin;
        int left = 0;
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }

}

publicsimplevider（Context-mContext，ArrayList-mDepth）{
mDivider=ContextCompat.getDrawable（mContext，R.drawable.recycler\u view\u divider）；
this.mContext=mContext；
this.mDepth=mDepth；
dividerMargin=15；
}
@凌驾
public void onDraw（@NonNull Canvas c，@NonNull RecyclerView parent，@NonNull RecyclerView.State）{
int-top=0；
int bottom=parent.getHeight（）；
int childCount=parent.getChildCount（）；
对于（int i=0；i

Edit1:这是适配器。我认为不需要它，因为所有的逻辑都写在ItemDecoration类中

private ArrayList<String> mList;

public class ViewHolder extends RecyclerView.ViewHolder{

    TextView singleMessageComment;
    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        singleMessageComment = itemView.findViewById(R.id.item_child_comment);
    }
}

public AdapterTest(ArrayList<String> mList) {
    this.mList = mList;
}

@NonNull
@Override
public AdapterTest.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recycler_view_single_layout, viewGroup, false);

    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(@NonNull AdapterTest.ViewHolder viewHolder, int i) {
    viewHolder.singleMessageComment.setText(mList.get(i));


}

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

私有数组列表mList；
公共类ViewHolder扩展了RecyclerView.ViewHolder{
TextView单条消息评论；
公共视图持有者（@NonNull View itemView）{
超级（项目视图）；
singleMessageComment=itemView.findViewById（R.id.item\u child\u comment）；
}
}
公共适配器测试（ArrayList mList）{
this.mList=mList；
}
@非空
@凌驾
public AdapterTest.ViewHolder onCreateViewHolder（@NonNull ViewGroup ViewGroup，int i）{
View View=LayoutInflater.from（viewGroup.getContext（））.flate（R.layout.recycler\u View\u single\u layout，viewGroup，false）；
返回新的ViewHolder（视图）；
}
@凌驾
BindViewHolder上的公共无效（@NonNull AdapterTest.ViewHolder ViewHolder，int i）{
viewHolder.singleMessageComment.setText（mList.get（i））；
}
@凌驾
public int getItemCount（）{
返回mList.size（）；
}

添加装饰：

recyclerView.addItemDecoration(new DividerItemDecoration(this, LinearLayout.VERTICAL));
recyclerView.addItemDecoration(new LeftDividerItemDecorator(this));

左分隔符项装饰符的声明：

public class LeftDividerItemDecorator extends RecyclerView.ItemDecoration {
    private final Drawable mDivider;
    private final Rect mBounds = new Rect();
    private final Context mContext;

    LeftDividerItemDecorator(Context context) {
        mContext = context;
        mDivider = context.getResources().getDrawable(R.drawable.divider);
    }

    public void onDraw(@NonNull Canvas c, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
        if (parent.getLayoutManager() != null && mDivider != null) {
            drawLeftDivider(c, parent);
        }
    }

    private void drawLeftDivider(Canvas canvas, RecyclerView parent) {
        canvas.save();

        int childCount = parent.getChildCount();

        for (int i = 0; i < childCount; ++i) {
            View child = parent.getChildAt(i);
            parent.getDecoratedBoundsWithMargins(child, mBounds);

            int childAdapterPosition = parent.getChildAdapterPosition(child);

            int left = parent.getPaddingLeft();

            // Solid size according to divider.xml width
            //int right = left + (mDivider.getIntrinsicWidth());

            // Dynamic size according to divider.xml width multiplied by child number
            int right = left + (mDivider.getIntrinsicWidth() * (childAdapterPosition + 1));

            int top = child.getTop();
            int bottom = child.getBottom();

            // Draw left vertical divider
            mDivider.setBounds(
                    left,
                    top,
                    right,
                    bottom
            );

            mDivider.draw(canvas);
        }

        canvas.restore();
    }

    // Handles dividers width - move current views to right
    public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
        if (mDivider == null) {
            outRect.set(0, 0, 0, 0);
        } else {
            int childAdapterPosition = parent.getChildAdapterPosition(view);
            outRect.set(mDivider.getIntrinsicWidth() * childAdapterPosition, 0, 0, 0);
        }
    }

}

公共类LeftDividerItemDecorator扩展了RecyclerView.ItemDecoration{
专用最终可抽出式mDivider；
private final Rect mBounds=新Rect（）；
私有最终上下文mContext；
LeftDividerItemDecorator（上下文）{
mContext=上下文；
mDivider=context.getResources（）.getDrawable（R.drawable.divider）；
}
public void onDraw（@NonNull Canvas c，@NonNull RecyclerView parent，@NonNull RecyclerView.State）{
if（parent.getLayoutManager（）！=null&&mDivider！=null）{
drawLeftDivider（c，父级）；
}
}
私有void drawLeftDivider（画布、RecyclerView父对象）{
canvas.save（）；
int childCount=parent.getChildCount（）；
对于（int i=0；i

分割器的xml：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <size
        android:width="4dp"
        android:height="4dp" />
    <solid android:color="@color/colorAccent" />
</shape>

预览：

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你能连接recyleView适配器吗？你是什么意思？我的意思是连接你的recyclerview代码。也是适配器类。@kAvEh好的，添加了适配器。我以为所有的分隔符逻辑都会在ItemDecoration类中处理？你不能只添加分隔符视图而不是添加项目装饰符吗？真是太棒了。我已经做了两天了，不知道怎么做。非常感谢你，随时打电话给@。