What you want to do is to paint to a Canvas that's linked to a Bitmap, and save the bitmap. Here's a few bits of code that you should be able to string together to make it work. Note that you'll have to still add the paining to the canvas, in the getBitmap()
function.
private Bitmap getBitmap() {
Bitmap bitmap = Bitmap.createBitmap(mPieToss.getWidth(),
mPieToss.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
// Draw things to your canvas. They will be included as your BitMap, which is saved later on
return bitmap;
}
public void save() {
Bitmap bitmap = getBitmap();
File path = Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
String timestamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(new Date());
String filename = "Imagen_" + timestamp + ".jpg";
File file = new File(path, filename);
FileOutputStream stream;
// This can fail if the external storage is mounted via USB
try {
stream = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, stream);
stream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mUri = Uri.fromFile(file);
bitmap.recycle();
}