Take a screenshot of RecyclerView in FULL length

Question

I want to get a \"full page\" screenshot of the activity. The view contains a RecyclerView with many items.

I can take a screenshot of the current view with this fun

Answer 1

The best solution I found is

1. create a new NestedScrollView

2. add it to recyclerview's parent

3. remove recyclerview from its parent "it's important to add it to a new parent"

4. add recyclerview to nestedscrollview

5. take screenshot of nestedscrollview

6. add recyclerview to its main parent.

    nestedScreenShot = new NestedScrollView(getContext());
   
    constraintLayout.removeView(recyclerView);
   
    ConstraintLayout.LayoutParams params =new 
   
    Constraints.LayoutParams(viewGroup.LayoutParams.MATCH_PARENT,
   
    ViewGroup.LayoutParams.MATCH_PARENT);
   
    nestedScreenShot.setLayoutParams(params);
   
   Drawable scrollBackground = scrollView.getBackground();
   if (scrollBackground != null) {
       tempNestedScreenShot.setBackground(scrollBackground);
   }
   tempNestedScreenShot.setPadding(scrollView.getLeft(), 
   scrollView.getTop(), scrollView.getRight(), scrollView.getBottom());
   
    constraintLayout.addView(nestedScreenShot);
   
    nestedScreenShot.addView(recyclerView, params);
   
    new Handler().postDelayed(new Runnable() {
           @Override
           public void run() {
   
               nestedScreenShot.removeView(recyclerView);
               constraintLayout.removeView(nestedScreenShot);
               nestedScreenShot = null;
               constraintLayout.addView(recyclerView, params);
   
   
           }
           }, 8000);
     takescreenshotOfNested(nestedScreenShot);
   

This method will return screenshot of nestedscrollview

       private Bitmap takescreenshotOfNested(View u) {
        
        NestedScrollView viewNested = null;
            
        ScrollView viewScroll = null;
              
        if (u instanceof NestedScrollView) {
                 
       
        viewNested = (NestedScrollView) u;
             
     
       } else if (u instanceof ScrollView) {
              
      
         viewScroll = (ScrollView) u;
            
       }
            
                Bitmap bitmap;
                if (viewNested != null) {
                    viewNested.setDrawingCacheEnabled(false);
                    viewNested.invalidate();
                    viewNested.getChildAt(0).setDrawingCacheEnabled(false);
                    viewNested.getChildAt(0).invalidate();
            
                    bitmap = Bitmap.createBitmap(viewNested.getChildAt(0).getWidth(),
                            viewNested.getChildAt(0).getHeight() + 8, Bitmap.Config.ARGB_8888);
                    Canvas canvas = new Canvas(bitmap);
                    canvas.drawColor(activity.getResources().getColor(R.color.layout_background));
                    viewNested.draw(canvas);
                } else {
            
                    try {
            
                        viewScroll.setDrawingCacheEnabled(false);
                        viewScroll.invalidate();
                    } catch (Exception ignored) {
                    }
                    viewScroll.getChildAt(0).setDrawingCacheEnabled(false);
                    viewScroll.getChildAt(0).invalidate();
            
                    bitmap = Bitmap.createBitmap(viewScroll.getChildAt(0).getWidth(),
                            viewScroll.getChildAt(0).getHeight() + 8, Bitmap.Config.ARGB_8888);
                    Canvas canvas = new Canvas(bitmap);
                    canvas.drawColor(activity.getResources().getColor(R.color.layout_background));
                    viewScroll.draw(canvas);
            
                }
                return bitmap;
            
            }

don't forget to recycle the bitmap after using it