Bitmap bm = BitmapFactory.decodeResource(getResources(),R.drawable.image); ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object final String encodedImage = Base64.encodeToString(baos.toByteArray(), Base64.DEFAULT); This is my code. It uploads the image onto the server. However, All I can see is a box. Where am I going wrong?
Make sure you convert back to bitmap at the End, ie Server side
1, convert your imageview to bitmap.
imageView.buildDrawingCache(); Bitmap bmap = imageView.getDrawingCache(); 2, convert bitmap to base64 String and pass to server
public String getEncoded64ImageStringFromBitmap(Bitmap bitmap) { ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(CompressFormat.JPEG, 70, stream); byte[] byteFormat = stream.toByteArray(); // get the base 64 string String imgString = Base64.encodeToString(byteFormat, Base64.NO_WRAP); return imgString; } 3, At server side convert base64 to bitmap. (this is java code, do it in your server side language)
byte[] decodedString = Base64.decode(Base64String.getBytes(), Base64.DEFAULT); Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length); set this bitmap to display image
convert your image to bitmap.
File imagefile = new File(Environment.getExternalStorageDirectory(),"/image/test.jpg" ); FileInputStream fis = null; try { fis = new FileInputStream(imagefile); } catch (FileNotFoundException e) { logger.error(Log.getStackTraceString(e)); e.printStackTrace(); } Bitmap bm = BitmapFactory.decodeStream(fis); Bitmap to Byte[]
ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 10 , baos); byte[] img = baos.toByteArray(); Byte[] to String:
String s= Base64.encodeToString(img , Base64.DEFAULT)