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 contents of a SPECIFIC layout, i.e. a `ScrollView` nested in a `LinearLayout`. (2) - As the `ScrollView` has content that spills out of the screen (hence scrolling made possible), how can I ensure that the screenshot includes the elements that are not visible on the screen? This is the current block of code I use. It does the job of taking a screenshot but only for the entire screen. This is even though `R.id.boss` is the ID of the `ScrollView` and not the main `LinearLayout`. ``` View view = findViewById(R.id.boss); View v = view.getRootView();// this does not seem to make a difference v.setDrawingCacheEnabled(true); v.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight()); v.buildDrawingCache(true); Bitm…

Accepted Answer

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();
            }
```

Taking a "screenshot" of a specific layout in Android

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