android - why when save image in storage is black? -

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i use code set bitmap imageview , image form imageview , save in storage when save it, image black! please solve problem!

bitmap bitmap = ink.getbitmap();           img_signature.setimagebitmap(bitmap);           bytearrayoutputstream stream = new bytearrayoutputstream();           bitmap.compress(bitmap.compressformat.jpeg, 50, stream);           byte[] bytearray = stream.tobytearray();           encodedstring = base64.encodetostring(bytearray, 0);           createdirectoryandsavefile(bitmap,"signature.jpg");

and method save image :

private void createdirectoryandsavefile(bitmap imagetosave, string filename) {  file direct = new file(environment.getexternalstoragedirectory().getabsolutepath() + "/delivery/");  if (!direct.exists()) {   direct.mkdirs(); }  file file = new file(direct, filename); if (file.exists())   file.delete(); try {   fileoutputstream out = new fileoutputstream(file);   imagetosave.compress(bitmap.compressformat.jpeg, 100, out);   out.flush();   out.close();  } catch (exception e) {   e.printstacktrace(); }

}





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