Take screenshot of surface view is not working in android

Question

In my android app i have surface view on which i have canvas and user can draw on canvas.Now i want to capture canvas image and store it to sd card. Below is my code -

 Bitmap bitmap = Bitmap.createBitmap(maxX, maxY, Bitmap.Config.RGB_565);
 canvas.setBitmap(bitmap);
 String mFile = path+"/drawing.png";
        Bitmap bitmap = drawBitmap();
        File file = new File(mFile);
        FileOutputStream fos = new FileOutputStream(file);
        bitmap.compress(CompressFormat.PNG, 100, fos);
        fos.flush();
        fos.close();

code is run but when i open sd card on image path file with name is created but when open image it is black. How to capture image from canvas in android.

Duplicate of http://stackoverflow.com/questions/25086263/take-screenshot-of-surfaceview/ ? — fadden, Dec 09 '14 at 17:33
Possible duplicate of [Android Take Screenshot of Surface View Shows Black Screen](https://stackoverflow.com/questions/27817577/android-take-screenshot-of-surface-view-shows-black-screen) — Anjani Mittal, Nov 22 '18 at 11:29

Zeeshan Ahmed · Answer 1 · 2014-12-09T12:11:31.197

-1

Just pass the your surface view object and file path where you want to store your snapshot. It is working perfectly.

public static void takeScreenshot(View view, String filePath) {
            Bitmap bitmap = getBitmapScreenshot(view);

            File imageFile = new File(filePath);
            imageFile.getParentFile().mkdirs();
            try {
                OutputStream fout = new FileOutputStream(imageFile);
                bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
                fout.flush();
                fout.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

public static Bitmap getBitmapScreenshot(View view) {
        view.measure(MeasureSpec.makeMeasureSpec(view.getWidth(), MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(view.getHeight(), MeasureSpec.EXACTLY));
        view.layout((int)view.getX(), (int)view.getY(), (int)view.getX() + view.getMeasuredWidth(), (int)view.getY() + view.getMeasuredHeight());

        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache(true);
        Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
        view.setDrawingCacheEnabled(false);

        return bitmap;
    }

edited Dec 09 '14 at 12:11

answered Dec 09 '14 at 10:21

Zeeshan Ahmed

1,179
2
13
30

what thus getBitmapScreenshot(view); ? – Ravi Bhandari Dec 09 '14 at 11:47
Sorry, I Post in hurry, that's why forget to add the second function. Check this now. hope it will solve your problem. – Zeeshan Ahmed Dec 09 '14 at 12:12
takeScreenshot(View view, String filePath) require parameter a view so how can i pass a surfaceview to it. – Ravi Bhandari Dec 09 '14 at 12:27
SurfaceViews have two parts, the Surface and the View. This captures the View, which is usually just a transparent hole used for layout. – fadden Dec 09 '14 at 17:35
can you please explain how to do this call. – Ravi Bhandari Dec 10 '14 at 06:22
This is a wrong answer, `SurfaceView` is not like any other normal `View`, like what @fadden said. This doesn't work. – Wesley Mar 20 '15 at 03:17

Take screenshot of surface view is not working in android

1 Answers1