Taking a “screenshot” of a specific layout in Android

Question

I have two main issues which are closely linked. I am looking at these problems from a programmatic point of view.

(1) - I wish to take a screenshot of the

Answer 1

Thanks to you guys, I've finally found out what was wrong.

View v = view.getRootView(); should not be used because it will call the root view which I do not want. I mistakenly thought this did not make a difference because I had entered the wrong resource ID.

MeasureSpec somehow did not give a good account of the width and height. So I ended up using another method:

...
ScrollView z = (ScrollView) findViewById(R.id.scroll);
int totalHeight = z.getChildAt(0).getHeight();
int totalWidth = z.getChildAt(0).getWidth();
u.layout(0, 0, totalWidth, totalHeight);
...

As ScrollView's total height can be determined by the single child element that it has.

After making these changes, I am now able to take a screenshot of a nested ScrollView and all its contents, visible or not. For anyone interested, here is the block of code including the saving of the bitmap:

            View u = findViewById(R.id.scroll);
            u.setDrawingCacheEnabled(true);                                                
            ScrollView z = (ScrollView) findViewById(R.id.scroll);
            int totalHeight = z.getChildAt(0).getHeight();
            int totalWidth = z.getChildAt(0).getWidth();
            u.layout(0, 0, totalWidth, totalHeight);    
            u.buildDrawingCache(true);
            Bitmap b = Bitmap.createBitmap(u.getDrawingCache());             
            u.setDrawingCacheEnabled(false);

            //Save bitmap
            String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
            String fileName = new SimpleDateFormat("yyyyMMddhhmm'_report.jpg'").format(new Date());
            File myPath = new File(extr, fileName);
            FileOutputStream fos = null;
            try {
                fos = new FileOutputStream(myPath);
                b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
                fos.flush();
                fos.close();
                MediaStore.Images.Media.insertImage(getContentResolver(), b, "Screen", "screen");
            }catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }