android - 以完整长度截取 RecyclerView 的屏幕截图.. 每个项目都有一个列表

Question

我正在使用具有动态大小列表的 recyclerView ......当我使用此方法截取每个 recyclerView 项目的屏幕截图时......它截取屏幕截图但每个项目仅包含一个列表项目......即使列表项目 大小 > 1。

public static Bitmap getRecyclerViewScreenshot(RecyclerView view) {
    int size = view.getAdapter().getItemCount();
    RecyclerView.ViewHolder holder = view.getAdapter().createViewHolder(view, 0);
    view.getAdapter().onBindViewHolder(holder, 0);
    ArrayList<Bitmap> bitmaps=new ArrayList<>();
    holder.itemView.measure(View.MeasureSpec.makeMeasureSpec(view.getWidth(),
            View.MeasureSpec.EXACTLY),
            View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
    holder.itemView.layout(0, 0, holder.itemView.getMeasuredWidth(), holder.itemView.getMeasuredHeight());
    Bitmap bigBitmap = Bitmap.createBitmap(view.getMeasuredWidth(), holder.itemView.getMeasuredHeight() * size,
            Bitmap.Config.ARGB_8888);
    Canvas bigCanvas = new Canvas(bigBitmap);
    bigCanvas.drawColor(Color.WHITE);
    Paint paint = new Paint();
    int iHeight = 0;
    holder.itemView.setDrawingCacheEnabled(true);
    holder.itemView.buildDrawingCache();
    bigCanvas.drawBitmap(holder.itemView.getDrawingCache(), 0f, iHeight, paint);
    holder.itemView.setDrawingCacheEnabled(false);
    holder.itemView.destroyDrawingCache();
    iHeight += holder.itemView.getMeasuredHeight();
    for (int i = 1; i < size; i++) {
        view.getAdapter().onBindViewHolder(holder, i);
        holder.itemView.setDrawingCacheEnabled(true);
        holder.itemView.buildDrawingCache();
        bitmaps.add(holder.itemView.getDrawingCache());
        bigCanvas.drawBitmap(holder.itemView.getDrawingCache(), 0f, iHeight, paint);
        iHeight += holder.itemView.getMeasuredHeight();
        holder.itemView.setDrawingCacheEnabled(false);
        holder.itemView.destroyDrawingCache();
    }
    return bigBitmap;
}



  Here is my screenshot attached (`of each item of recyclerView`)!! It should show `two items` but uniformly its showing `1 item` each ` I am facing problem with the `inner listView` 

Original 是:-

截图 是:-

对于每个 recycler item 截图都是这样，只显示 1 项目。

Answer 1

遇到同样的问题并使用这段代码解决了这个问题。

首先，要求您的 View 计算它的测量值，然后要求 View 提供 MeasuredHeight 并完成所有操作。

recyclerView.measure(
        View.MeasureSpec.makeMeasureSpec(recyclerView.getWidth(), View.MeasureSpec.EXACTLY),
        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));

Bitmap bm = Bitmap.createBitmap(recyclerView.getWidth(), recyclerView.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
recyclerView.draw(new Canvas(bm));

saveImage(bm);
ImageView im
          = new ImageView(getActivity());
im.setImageBitmap(bm);
 new AlertDialog.Builder(getActivity()).setView(im).show();