Android App - How to save a bitmap drawing on canvas as image? Check code?

Question

I tried to use the following codes to

1. Draw on canvas
2. Save the canvas on Image

Problem - When I try to save the image, it shows a null

Answer 1

There is a little add on in the above code. The above code is saving the pic in the storage. But the Image is not showing in the gallery. To show the image in gallery just need to setup a MediaScannerConnection for the bitmap we are saving

Sample Function

public void scanPhoto(final String imageFileName) {
    MediaScannerConnection msConn = new MediaScannerConnection(PaintPic.this,
            new MediaScannerConnectionClient() {
                public void onMediaScannerConnected() {
                    msConn.scanFile(imageFileName, null);
                    Log.i("msClient obj  in Photo Utility",
                            "connection established");
                }

                public void onScanCompleted(String path, Uri uri) {
                    msConn.disconnect();
                    Log.i("msClient obj in Photo Utility", "scan completed");
                }
            });
    msConn.connect();
}

and call this function just after this line

save.compress(Bitmap.CompressFormat.PNG, 100, ostream);

Now the saved bitmap is also visible in the Gallery